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href="/w/index.php?title=Special:RecentChanges&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="auth.wikimedia.org"> </head> <body class="skin-vector-legacy mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-1728 ns-subject page-Event_Data_Reuse_Days_2025 rootpage-Event_Data_Reuse_Days_2025 skin-vector action-view"><div id="mw-page-base" class="noprint"></div> <div id="mw-head-base" class="noprint"></div> <div id="content" class="mw-body" role="main"> <a id="top"></a> <div id="siteNotice"></div> <div class="mw-indicators"> </div> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-namespace">Event</span><span class="mw-page-title-separator">:</span><span class="mw-page-title-main">Data Reuse Days 2025</span></h1> <div id="bodyContent" class="vector-body"> <div id="siteSub" class="noprint">From Wikidata</div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="contentSub2"></div> <div id="jump-to-nav"></div> <a class="mw-jump-link" href="#mw-head">Jump to navigation</a> <a class="mw-jump-link" href="#searchInput">Jump to search</a> <div id="mw-content-text" class="mw-body-content"><div dir='ltr' lang='en' class='ext-campaignevents-eventpage-header oo-ui-layout oo-ui-panelLayout oo-ui-panelLayout-padded oo-ui-panelLayout-framed'><div class='ext-campaignevents-eventpage-header-eventinfo'><div class='oo-ui-widget oo-ui-widget-enabled oo-ui-iconElement ext-campaignevents-textwithicon-widget'><span title='Location' class='oo-ui-iconElement-icon oo-ui-icon-mapPin ext-campaignevents-eventpage-icon'></span><span class='oo-ui-labelElement-label oo-ui-labelElement-invisible'>Location</span><span class='ext-campaignevents-textwithicon-widget-content'>Online event</span></div><div class='ext-campaignevents-eventpage-header-time oo-ui-widget oo-ui-widget-enabled oo-ui-iconElement ext-campaignevents-textwithicon-widget'><span title='Start and end time' class='oo-ui-iconElement-icon oo-ui-icon-clock ext-campaignevents-eventpage-icon'></span><span class='oo-ui-labelElement-label oo-ui-labelElement-invisible'>Start and end time</span><span class='ext-campaignevents-textwithicon-widget-content'><span data-mw-start='2025-02-18T17:00:00Z' data-mw-end='2025-02-27T19:00:00Z' class='ext-campaignevents-time-range'>17:00, 18 February 2025 – 19:00, 27 February 2025</span><div><strong>Timezone:</strong> <span class="ext-campaignevents-timezone">+00:00</span></div></span></div><div class='oo-ui-widget oo-ui-widget-enabled oo-ui-iconElement ext-campaignevents-textwithicon-widget'><span title='Number of participants' class='oo-ui-iconElement-icon oo-ui-icon-userGroup ext-campaignevents-eventpage-icon'></span><span class='oo-ui-labelElement-label oo-ui-labelElement-invisible'>Number of participants</span><span class='ext-campaignevents-textwithicon-widget-content'>267 participants</span></div><div class='ext-campaignevents-eventpage-header-buttons'><span class='ext-campaignevents-eventpage-details-btn oo-ui-widget oo-ui-widget-enabled oo-ui-buttonElement oo-ui-buttonElement-frameless oo-ui-labelElement oo-ui-flaggedElement-progressive oo-ui-buttonWidget'><a role='button' tabindex='0' href='/wiki/Special:EventDetails/1050' rel='nofollow' class='oo-ui-buttonElement-button'><span class='oo-ui-iconElement-icon oo-ui-iconElement-noIcon oo-ui-image-progressive'></span><span class='oo-ui-labelElement-label'>More details</span><span class='oo-ui-indicatorElement-indicator oo-ui-indicatorElement-noIndicator oo-ui-image-progressive'></span></a></span><span aria-disabled='true' class='ext-campaignevents-eventpage-action-element oo-ui-widget oo-ui-widget-disabled oo-ui-buttonElement oo-ui-buttonElement-framed oo-ui-labelElement oo-ui-buttonWidget'><a role='button' tabindex='-1' aria-disabled='true' rel='nofollow' class='oo-ui-buttonElement-button'><span class='oo-ui-iconElement-icon oo-ui-iconElement-noIcon oo-ui-image-invert'></span><span class='oo-ui-labelElement-label'>Event ended</span><span class='oo-ui-indicatorElement-indicator oo-ui-indicatorElement-noIndicator oo-ui-image-invert'></span></a></span></div></div></div><div id="ext-campaignevents-eventpage-details-dialog-content"><h2 class="ext-campaignevents-detailsdialog-header">Data Reuse Days 2025</h2><div class="ext-campaignevents-detailsdialog-organizers">Organized by: <a href="/wiki/User:Lea_Lacroix_(WMDE)" class="mw-userlink" title="User:Lea Lacroix (WMDE)"><bdi>Lea Lacroix (WMDE)</bdi></a></div><div class="ext-campaignevents-detailsdialog-body-container"><div class="ext-campaignevents-detailsdialog-eventinfo-container"><div><h3 class='ext-campaignevents-eventpage-detailsdialog-section-header'><span class='ext-campaignevents-eventpage-detailsdialog-section-icon oo-ui-widget oo-ui-widget-enabled oo-ui-iconElement-icon oo-ui-icon-clock oo-ui-iconElement oo-ui-labelElement-invisible oo-ui-iconWidget'></span><span>Start and end time</span></h3><div class='ext-campaignevents-eventpage-detailsdialog-section-content ext-campaignevents-eventpage-detailsdialog-time'><span data-mw-start='2025-02-18T17:00:00Z' data-mw-end='2025-02-27T19:00:00Z' class='ext-campaignevents-time-range'>17:00, 18 February 2025 to 19:00, 27 February 2025</span><div><strong>Timezone:</strong> <span class="ext-campaignevents-timezone">+00:00</span></div></div></div><div><h3 class='ext-campaignevents-eventpage-detailsdialog-section-header'><span class='ext-campaignevents-eventpage-detailsdialog-section-icon oo-ui-widget oo-ui-widget-enabled oo-ui-iconElement-icon oo-ui-icon-mapPin oo-ui-iconElement oo-ui-labelElement-invisible oo-ui-iconWidget'></span><span>Location</span></h3><div class='ext-campaignevents-eventpage-detailsdialog-section-content'><h4 class='ext-campaignevents-eventpage-detailsdialog-location-header'>Online event</h4><p></p></div></div></div><div><h3 class='ext-campaignevents-eventpage-detailsdialog-section-header'><span class='ext-campaignevents-eventpage-detailsdialog-section-icon oo-ui-widget oo-ui-widget-enabled oo-ui-iconElement-icon oo-ui-icon-userGroup oo-ui-iconElement oo-ui-labelElement-invisible oo-ui-iconWidget'></span><span>267 participants</span></h3><div class='ext-campaignevents-eventpage-detailsdialog-section-content'><ul class='ext-campaignevents-detailsdialog-participants-list'><li><a href="/wiki/User:Lea_Lacroix_(WMDE)" class="mw-userlink" title="User:Lea Lacroix (WMDE)"><bdi>Lea Lacroix (WMDE)</bdi></a></li><li><a href="/wiki/User:Lydia_Pintscher_(WMDE)" class="mw-userlink" title="User:Lydia Pintscher (WMDE)"><bdi>Lydia Pintscher (WMDE)</bdi></a></li><li><a href="/wiki/User:ItamarWMDE" class="mw-userlink" title="User:ItamarWMDE"><bdi>ItamarWMDE</bdi></a></li><li><a href="/wiki/User:Kuldeepburjbhalaike" class="mw-userlink" title="User:Kuldeepburjbhalaike"><bdi>Kuldeepburjbhalaike</bdi></a></li><li><a href="/wiki/User:Masssly" class="mw-userlink" title="User:Masssly"><bdi>Masssly</bdi></a></li><li><a href="/wiki/User:MSwierenga" class="mw-userlink" title="User:MSwierenga"><bdi>MSwierenga</bdi></a></li><li><a href="/wiki/User:Macocobovi" class="mw-userlink" title="User:Macocobovi"><bdi>Macocobovi</bdi></a></li><li><a href="/wiki/User:Kosboot" class="mw-userlink" title="User:Kosboot"><bdi>Kosboot</bdi></a></li><li><a href="/wiki/User:Sridhar_G" class="mw-userlink" title="User:Sridhar G"><bdi>Sridhar G</bdi></a></li><li><a href="/wiki/User:Hanlin_Li" class="mw-userlink" title="User:Hanlin Li"><bdi>Hanlin Li</bdi></a></li></ul><span class='oo-ui-widget oo-ui-widget-enabled oo-ui-buttonElement oo-ui-buttonElement-frameless oo-ui-labelElement oo-ui-flaggedElement-progressive oo-ui-buttonWidget'><a role='button' tabindex='0' href='/w/index.php?title=Special:EventDetails/1050&tab=ParticipantsPanel' rel='nofollow' class='oo-ui-buttonElement-button'><span class='oo-ui-iconElement-icon oo-ui-iconElement-noIcon oo-ui-image-progressive'></span><span class='oo-ui-labelElement-label'>View all</span><span class='oo-ui-indicatorElement-indicator oo-ui-indicatorElement-noIndicator oo-ui-image-progressive'></span></a></span></div><div class='ext-campaignevents-detailsdialog-private-participants-footer'><span class='oo-ui-widget oo-ui-widget-enabled oo-ui-iconElement-icon oo-ui-icon-lock oo-ui-iconElement oo-ui-labelElement-invisible oo-ui-iconWidget'></span><span class='ext-campaignevents-detailsdialog-private-participants-footer-text'>22 participants registered privately</span></div></div></div></div><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/File:Banner_Data_Reuse_Days_2025_01.png" class="mw-file-description"><img alt="Data Reuse Days, 18-27 February 2025" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Banner_Data_Reuse_Days_2025_01.png/800px-Banner_Data_Reuse_Days_2025_01.png" decoding="async" width="800" height="267" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Banner_Data_Reuse_Days_2025_01.png/1200px-Banner_Data_Reuse_Days_2025_01.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Banner_Data_Reuse_Days_2025_01.png/1600px-Banner_Data_Reuse_Days_2025_01.png 2x" data-file-width="3000" data-file-height="1000" /></a><figcaption></figcaption></figure> <div style="width:100%; font-size:1.2em; min-width:99%; margin:auto; padding-top:20px;"> <div style="float:left; min-width:18%; border-bottom: 8px solid #3c4e78; text-align:center; margin-right:1%;"><a class="mw-selflink selflink">Overview</a></div> <div style="float:left; min-width:18%; border-bottom: 8px solid #cd6753; text-align:center; margin-left:1%; margin-right:10px;"><a class="mw-selflink-fragment" href="#Sessions">Program</a></div> <div style="float:left; min-width:18%; border-bottom: 8px solid #6097c6; text-align:center; margin-left:1%; margin-right:10px;"><a href="/wiki/Special:RegisterForEvent/1050" title="Special:RegisterForEvent/1050">Register</a></div> <div style="float:left; min-width:18%; border-bottom: 8px solid #9cbfdb; text-align:center; margin-left:1%; margin-right:10px;"><a href="/wiki/Special:EventDetails/1050" title="Special:EventDetails/1050">Participants</a></div> <div style="float:left; min-width:18%; border-bottom: 8px solid #e4c0b9; text-align:center; margin-left:1%; margin-right:10px;"><a href="/wiki/Event_talk:Data_Reuse_Days_2025" title="Event talk:Data Reuse Days 2025">Discussions</a></div> </div> <div style="clear: both;"></div> <p><br /> </p> <div class="tocright"><style data-mw-deduplicate="TemplateStyles:r1355920205">.mw-parser-output .tocright{float:right;clear:right;margin-bottom:.5em;padding:.5em 0 .8em 1.4em;background:none}</style><div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"><input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none" /><div class="toctitle" lang="en" dir="ltr"><h2 id="mw-toc-heading">Contents</h2><span class="toctogglespan"><label class="toctogglelabel" for="toctogglecheckbox"></label></span></div> <ul> <li class="toclevel-1 tocsection-1"><a href="#Sessions"><span class="tocnumber">1</span> <span class="toctext">Sessions</span></a> <ul> <li class="toclevel-2 tocsection-2"><a href="#Tuesday,_February_18th"><span class="tocnumber">1.1</span> <span class="toctext">Tuesday, February 18th</span></a></li> <li class="toclevel-2 tocsection-3"><a href="#Wednesday,_February_19th"><span class="tocnumber">1.2</span> <span class="toctext">Wednesday, February 19th</span></a></li> <li class="toclevel-2 tocsection-4"><a href="#Thursday,_February_20th"><span class="tocnumber">1.3</span> <span class="toctext">Thursday, February 20th</span></a></li> <li class="toclevel-2 tocsection-5"><a href="#Friday,_February_21st"><span class="tocnumber">1.4</span> <span class="toctext">Friday, February 21st</span></a></li> <li class="toclevel-2 tocsection-6"><a href="#Saturday,_February_22nd"><span class="tocnumber">1.5</span> <span class="toctext">Saturday, February 22nd</span></a></li> <li class="toclevel-2 tocsection-7"><a href="#Monday,_February_24th"><span class="tocnumber">1.6</span> <span class="toctext">Monday, February 24th</span></a></li> <li class="toclevel-2 tocsection-8"><a href="#Tuesday,_February_25th"><span class="tocnumber">1.7</span> <span class="toctext">Tuesday, February 25th</span></a></li> <li class="toclevel-2 tocsection-9"><a href="#Wednesday,_February_26th"><span class="tocnumber">1.8</span> <span class="toctext">Wednesday, February 26th</span></a></li> <li class="toclevel-2 tocsection-10"><a href="#Thursday,_February_27th"><span class="tocnumber">1.9</span> <span class="toctext">Thursday, February 27th</span></a></li> <li class="toclevel-2 tocsection-11"><a href="#Friday,_February_28th"><span class="tocnumber">1.10</span> <span class="toctext">Friday, February 28th</span></a></li> </ul> </li> <li class="toclevel-1 tocsection-12"><a href="#See_also"><span class="tocnumber">2</span> <span class="toctext">See also</span></a></li> </ul> </div> </div> <dl><dt>Welcome!</dt> <dd>The <b>Data Reuse Days 2025</b> is an online event focusing on how <b>people and organizations use Wikidata's data to build interesting applications and tools</b>. It aims to bring together data reusers and editors to learn from each other and discover cool Wikidata-powered applications. We will also cover technical aspects of Wikidata and share research and ideas for the future of reusing Wikidata’s data.</dd></dl> <dl><dt>How does it work?</dt> <dd>The event is taking place <b>online</b>, we will have sessions taking place during periods of 2 hours through 8 days: <b>from February 18 to 27, 2025</b>. Find the <a href="#Sessions">schedule</a> below on this page. The sessions take place in English, and are open to everyone interested in the topic of data reuse. You have 3 options to watch the sessions:</dd></dl> <ul><li>Attend <b>live in the Jitsi room</b>: you'll be able to interact with the speakers and other participants. Once you have <a href="/wiki/Special:RegisterForEvent/1050" title="Special:RegisterForEvent/1050">registered for the event</a> you can find the unique Jitsi link on the <b><a href="/wiki/Special:EventDetails/1050" title="Special:EventDetails/1050">Event details</a></b> page. Note: if you join the Jitsi room, please be aware that we will be recording the call and broadcasting it live on Youtube.</li> <li>Watch the <b>livestream of the sessions on Youtube</b>: great option if your connection or device doesn't allow Jitsi, or if you don't want to appear on the videos. You can find the links for each day on the schedule tables below.</li> <li>Watch the <b>replay videos</b> later on Youtube or Wikimedia Commons: to catch up in case you missed the live transmission, you can find the links for each day on the schedule tables below.</li></ul> <dl><dt>Register to the event</dt> <dd>We encourage you to <b>sign up to the event</b> on this page to receive updates and access links. In order to register, you need to be logged in with your Wikimedia account, and click on the <b>"register for event" button</b> at the top of this page.</dd></dl> <dl><dt>Code of conduct</dt> <dd>Please note that the entire initiative, including the presentations and discussions on various channels, is covered by the <a href="https://www.mediawiki.org/wiki/Special:MyLanguage/Code_of_Conduct" class="extiw" title="mw:Special:MyLanguage/Code of Conduct">Code of Conduct for technical spaces</a>. Please contribute in making the discussion spaces safe and welcoming for everyone.</dd></dl> <dl><dt>Discussions and help</dt> <dd>If you have questions or suggestions about the event, feel free to use the talk page. Announcements about the event are talking place on the same talk page, and on the <a rel="nofollow" class="external text" href="https://t.me/joinchat/SPlRqI5xcw7ugXlE">Wikidata Telegram group</a>. If you want to reach out to the organizers directly, feel free to contact <a href="/wiki/User:Lea_Lacroix_(WMDE)" title="User:Lea Lacroix (WMDE)">Lea Lacroix (WMDE)</a> (lea.lacroix_ext<span class="skin-invert" typeof="mw:File"><span title="@"><img alt="@" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/88/At_sign.svg/15px-At_sign.svg.png" decoding="async" width="15" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/88/At_sign.svg/23px-At_sign.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/88/At_sign.svg/30px-At_sign.svg.png 2x" data-file-width="145" data-file-height="145" /></span></span>wikimedia.de or @Auregann on Telegram).</dd></dl> <div class="mw-heading mw-heading2"><h2 id="Sessions">Sessions</h2></div> <div style="background:#d0e6f4; color:#3c4e78; padding:1%; font-size:1.2em;"> The event is now over, but you can rewatch the sessions at anytime. You'll find the links in the program tables below.</div> <div class="mw-heading mw-heading3"><h3 id="Tuesday,_February_18th"><span id="Tuesday.2C_February_18th"></span>Tuesday, February 18th</h3></div> <table class="wikitable"> <caption> </caption> <tbody><tr> <th>Session details </th> <th>Title, description and speakers </th></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1739898000" class="extiw" title="toolforge:zonestamp/1739898000"><time datetime="2025-02-18T17:00:00+00:00" class="zonestamp">17:00 UTC</time></a></b> <p>50min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=tSnEFCyKJsU">Youtube</a> (starting at 0:26) </p> </td> <td><b>Opening session</b> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Data_Reuse_Days_2025_-_Opening.pdf" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e5/Data_Reuse_Days_2025_-_Opening.pdf/page1-220px-Data_Reuse_Days_2025_-_Opening.pdf.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e5/Data_Reuse_Days_2025_-_Opening.pdf/page1-330px-Data_Reuse_Days_2025_-_Opening.pdf.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e5/Data_Reuse_Days_2025_-_Opening.pdf/page1-440px-Data_Reuse_Days_2025_-_Opening.pdf.jpg 2x" data-file-width="1500" data-file-height="843" /></a><figcaption>opening slides</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Data_Reuse_Days_2025_-_Data_access_methods_research_results.pdf" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c1/Data_Reuse_Days_2025_-_Data_access_methods_research_results.pdf/page1-220px-Data_Reuse_Days_2025_-_Data_access_methods_research_results.pdf.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c1/Data_Reuse_Days_2025_-_Data_access_methods_research_results.pdf/page1-330px-Data_Reuse_Days_2025_-_Data_access_methods_research_results.pdf.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c1/Data_Reuse_Days_2025_-_Data_access_methods_research_results.pdf/page1-440px-Data_Reuse_Days_2025_-_Data_access_methods_research_results.pdf.jpg 2x" data-file-width="1500" data-file-height="843" /></a><figcaption>research results slides</figcaption></figure> <p>In this session, we'll present the Data Reuse Days 2025 and how the event will work. In the second part of the session we will give you insight from research Wikimedia Deutschland is conducting about how to improve the various data access methods, and share with you what's coming up for Wikidata reusers. </p><p><i>Speakers</i>: <a href="/wiki/User:Lea_Lacroix_(WMDE)" title="User:Lea Lacroix (WMDE)"><span title="user page of Lea Lacroix (WMDE)">Lea Lacroix (WMDE)</span></a>, <a href="/wiki/User:Lydia_Pintscher_(WMDE)" title="User:Lydia Pintscher (WMDE)"><span title="user page of Lydia Pintscher (WMDE)">Lydia Pintscher (WMDE)</span></a>, <a href="/wiki/User:Ifrahkhanyaree_WMDE" title="User:Ifrahkhanyaree WMDE"><span title="user page of Ifrahkhanyaree WMDE">Ifrahkhanyaree WMDE</span></a> </p> </td></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1739901600" class="extiw" title="toolforge:zonestamp/1739901600"><time datetime="2025-02-18T18:00:00+00:00" class="zonestamp">18:00 UTC</time></a></b> <p>60min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=tSnEFCyKJsU">Youtube</a> (starting at 45:17) </p> </td> <td><b>Using Wikidata's data: Come and ask your questions!</b> <p>Have you been building an application using data from Wikidata and encountered some issues? Struggling to use the dumps or the APIs? Are you thinking of reusing Wikidata's data but you don't know where to start? This session is perfect for you! You will have the ability to ask for help and input (there's no stupid question). The development team, other reusers or editors will answer and unblock you. </p><p><i>Facilitation</i>: <a href="/wiki/User:Lydia_Pintscher_(WMDE)" title="User:Lydia Pintscher (WMDE)"><span title="user page of Lydia Pintscher (WMDE)">Lydia Pintscher (WMDE)</span></a>, <a href="/wiki/User:Ifrahkhanyaree_WMDE" title="User:Ifrahkhanyaree WMDE"><span title="user page of Ifrahkhanyaree WMDE">Ifrahkhanyaree WMDE</span></a> </p> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Wednesday,_February_19th"><span id="Wednesday.2C_February_19th"></span>Wednesday, February 19th</h3></div> <table class="wikitable"> <tbody><tr> <th>Session details </th> <th>Title, description and speakers </th></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1739984400" class="extiw" title="toolforge:zonestamp/1739984400"><time datetime="2025-02-19T17:00:00+00:00" class="zonestamp">17:00 UTC</time></a></b> <p>50min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=MnpoGfwd8b0">Youtube</a> (starting at 0:15) </p> </td> <td><b>How to use Wikidata's data: an introduction</b> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Data_Reuse_Days_2025_-_How_to_use_Wikidata%27s_data.pdf" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Data_Reuse_Days_2025_-_How_to_use_Wikidata%27s_data.pdf/page1-220px-Data_Reuse_Days_2025_-_How_to_use_Wikidata%27s_data.pdf.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Data_Reuse_Days_2025_-_How_to_use_Wikidata%27s_data.pdf/page1-330px-Data_Reuse_Days_2025_-_How_to_use_Wikidata%27s_data.pdf.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Data_Reuse_Days_2025_-_How_to_use_Wikidata%27s_data.pdf/page1-440px-Data_Reuse_Days_2025_-_How_to_use_Wikidata%27s_data.pdf.jpg 2x" data-file-width="1500" data-file-height="843" /></a><figcaption>slides</figcaption></figure> <p>There are several ways to get to Wikidata's data and integrate it in your application. We will give an overview of existing ways to retrieve and use data from Wikidata for developers. We will dive into when to use which as well as good practices and tips. We're here to help you get the data you need for your application in the best way possible. </p><p><i>Speakers</i>: <a href="/wiki/User:Lydia_Pintscher_(WMDE)" title="User:Lydia Pintscher (WMDE)"><span title="user page of Lydia Pintscher (WMDE)">Lydia Pintscher (WMDE)</span></a>, <a href="/wiki/User:Ifrahkhanyaree_WMDE" title="User:Ifrahkhanyaree WMDE"><span title="user page of Ifrahkhanyaree WMDE">Ifrahkhanyaree WMDE</span></a> </p> </td></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1739988000" class="extiw" title="toolforge:zonestamp/1739988000"><time datetime="2025-02-19T18:00:00+00:00" class="zonestamp">18:00 UTC</time></a></b> <p>60min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=MnpoGfwd8b0">Youtube</a> (starting at 52:56) </p> </td> <td><b>Snowman + Wikidata: Website from scratch</b> <p>In this one hour live coding session we will create a small website showcasing glacier data in Wikidata. At the end of the session our website will have individual glacier pages with images, an interactive map, and a few different pages listing glaciers by their attributes. We will be using <a rel="nofollow" class="external text" href="https://github.com/glaciers-in-archives/snowman">Snowman</a>, a static site generator for SPARQL services. After the session you will be ready to learn advanced Snowman topics like multilinguality, search, CD/CI integrations, and much more so that you can make your Wikidata projects a reality quicker than ever! </p><p><i>Speaker</i>: <a href="/wiki/User:Abbe98" title="User:Abbe98"><span title="user page of Abbe98">Abbe98</span></a> </p> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Thursday,_February_20th"><span id="Thursday.2C_February_20th"></span>Thursday, February 20th</h3></div> <table class="wikitable"> <tbody><tr> <th>Session details </th> <th>Title, description and speakers </th></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740070800" class="extiw" title="toolforge:zonestamp/1740070800"><time datetime="2025-02-20T17:00:00+00:00" class="zonestamp">17:00 UTC</time></a></b> <p>30min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=BXcMmtE8rEA">Youtube</a> (starting at 0:15) </p> </td> <td><b>Introduction to the Wikibase REST API</b> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Data_Reuse_Days_2025_-_Wikibase_REST_API_overview.pdf" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/81/Data_Reuse_Days_2025_-_Wikibase_REST_API_overview.pdf/page1-220px-Data_Reuse_Days_2025_-_Wikibase_REST_API_overview.pdf.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/81/Data_Reuse_Days_2025_-_Wikibase_REST_API_overview.pdf/page1-330px-Data_Reuse_Days_2025_-_Wikibase_REST_API_overview.pdf.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/81/Data_Reuse_Days_2025_-_Wikibase_REST_API_overview.pdf/page1-440px-Data_Reuse_Days_2025_-_Wikibase_REST_API_overview.pdf.jpg 2x" data-file-width="1500" data-file-height="843" /></a><figcaption>slides</figcaption></figure> <p>Wikidata's newest API is the REST API. In this session we will give you an intro to the REST API, how it works and where it's going. </p><p><i>Speakers</i>: <a href="/wiki/User:Ifrahkhanyaree_WMDE" title="User:Ifrahkhanyaree WMDE"><span title="user page of Ifrahkhanyaree WMDE">Ifrahkhanyaree WMDE</span></a>, <a href="/wiki/User:Jakob_Warkotsch_(WMDE)" title="User:Jakob Warkotsch (WMDE)"><span title="user page of Jakob Warkotsch (WMDE)">Jakob Warkotsch (WMDE)</span></a> </p> </td></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740072600" class="extiw" title="toolforge:zonestamp/1740072600"><time datetime="2025-02-20T17:30:00+00:00" class="zonestamp">17:30 UTC</time></a></b> <p>60min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=BXcMmtE8rEA">Youtube</a> (starting at 21:46) </p> </td> <td><b>Build a simple app in REST API</b> <p>We will walk through the entire user journey of building a simple web application using the new REST API. Starting with discovering and navigating the documentation, we will explore how to select the appropriate endpoints for retrieving and editing Item data and integrate them into our app. </p><p><i>Speakers</i>: <a href="/wiki/User:Ifrahkhanyaree_WMDE" title="User:Ifrahkhanyaree WMDE"><span title="user page of Ifrahkhanyaree WMDE">Ifrahkhanyaree WMDE</span></a>, <a href="/wiki/User:Jakob_Warkotsch_(WMDE)" title="User:Jakob Warkotsch (WMDE)"><span title="user page of Jakob Warkotsch (WMDE)">Jakob Warkotsch (WMDE)</span></a> </p> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Friday,_February_21st"><span id="Friday.2C_February_21st"></span>Friday, February 21st</h3></div> <table class="wikitable"> <tbody><tr> <th>Session details </th> <th>Title, description and speakers </th></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740157200" class="extiw" title="toolforge:zonestamp/1740157200"><time datetime="2025-02-21T17:00:00+00:00" class="zonestamp">17:00 UTC</time></a></b> <p>80min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=DKWl1ICsyeQ">Youtube</a> (starting at 0:00) </p> </td> <td><b>Application showcase #1</b> <p>Discover tools and applications that use Wikidata's data from their creators, learn more about the technical setup they use and the challenges they may face. Each presentation will be a 10min lightning talk, and at the end of all presentations we'll have a common Q&A and discussion. </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Govdirectory_Data_Reuse_Days_2025.pdf" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Govdirectory_Data_Reuse_Days_2025.pdf/page1-220px-Govdirectory_Data_Reuse_Days_2025.pdf.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Govdirectory_Data_Reuse_Days_2025.pdf/page1-330px-Govdirectory_Data_Reuse_Days_2025.pdf.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Govdirectory_Data_Reuse_Days_2025.pdf/page1-440px-Govdirectory_Data_Reuse_Days_2025.pdf.jpg 2x" data-file-width="1500" data-file-height="843" /></a><figcaption>slides</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Mlscores_-_John_Samuel_-_Data_Reuse_Days_2025.pdf" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Mlscores_-_John_Samuel_-_Data_Reuse_Days_2025.pdf/page1-220px-Mlscores_-_John_Samuel_-_Data_Reuse_Days_2025.pdf.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Mlscores_-_John_Samuel_-_Data_Reuse_Days_2025.pdf/page1-330px-Mlscores_-_John_Samuel_-_Data_Reuse_Days_2025.pdf.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Mlscores_-_John_Samuel_-_Data_Reuse_Days_2025.pdf/page1-440px-Mlscores_-_John_Samuel_-_Data_Reuse_Days_2025.pdf.jpg 2x" data-file-width="1500" data-file-height="843" /></a><figcaption>slides</figcaption></figure> <ol><li><a rel="nofollow" class="external text" href="https://www.glam-europe.de/">GLAMorous Europe</a> - Dating the GLAMs of your neighbours (Anne Mühlich, Gerd Müller)</li> <li><a rel="nofollow" class="external text" href="https://www.govdirectory.org/">Govdirectory</a>: How we monitor data quality and changes (<a href="/wiki/User:Ainali" title="User:Ainali"><span title="user page of Ainali">Ainali</span></a>, <a href="/wiki/User:Abbe98" title="User:Abbe98"><span title="user page of Abbe98">Abbe98</span></a>)</li> <li><a rel="nofollow" class="external text" href="https://github.com/johnsamuelwrites/mlscores">mlscore</a> - Multilinguality score of Wikidata items and properties (<a href="/wiki/User:Jsamwrites" title="User:Jsamwrites"><span title="user page of Jsamwrites">Jsamwrites</span></a>)</li> <li><a rel="nofollow" class="external text" href="https://www.expeditia.info">Expeditia</a>, visualise Research Expeditions itineraries (Joaquim Santos)</li> <li><a href="https://umap.openstreetmap.fr/en/map/community-public-libraries-in-uganda-ugandan-libra_1147102#8.2F0.648.2F29.453" class="extiw" title="umap:en/map/community-public-libraries-in-uganda-ugandan-libra 1147102">Mapping Libraries in Uganda</a> (<a href="/wiki/User:Micheal_Kaluba" title="User:Micheal Kaluba"><span title="user page of Micheal Kaluba">Micheal Kaluba</span></a>, <a href="/wiki/User:Catherine_Amia" title="User:Catherine Amia"><span title="user page of Catherine Amia">Catherine Amia</span></a>, <a href="/wiki/User:AKibombo" title="User:AKibombo"><span title="user page of AKibombo">AKibombo</span></a>)</li></ol> </td></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740162600" class="extiw" title="toolforge:zonestamp/1740162600"><time datetime="2025-02-21T18:30:00+00:00" class="zonestamp">18:30 UTC</time></a></b> <p>25min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=DKWl1ICsyeQ">Youtube</a> ( starting at 1:16:18) </p> </td> <td><b>Discussion about Action API</b> <p>Have you been a long term user of the Action API? Or always wanted to try it out but ran into challenges? Never had a chance to praise or criticize it? Want to share your opinion or what we could do to improve it? Then come talk to us in this session! </p><p><i>Facilitation</i>: <a href="/wiki/User:Ifrahkhanyaree_WMDE" title="User:Ifrahkhanyaree WMDE"><span title="user page of Ifrahkhanyaree WMDE">Ifrahkhanyaree WMDE</span></a> </p> </td></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740164400" class="extiw" title="toolforge:zonestamp/1740164400"><time datetime="2025-02-21T19:00:00+00:00" class="zonestamp">19:00 UTC</time></a></b> <p>60min </p><p>👥 Not recorded </p> </td> <td><b>Let's play Wikidata games together!</b> <p>During this informal session, we will play some Wikidata-based games and chat. </p><p><i>Facilitation</i>: <a href="/wiki/User:Lydia_Pintscher_(WMDE)" title="User:Lydia Pintscher (WMDE)"><span title="user page of Lydia Pintscher (WMDE)">Lydia Pintscher (WMDE)</span></a> </p> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Saturday,_February_22nd"><span id="Saturday.2C_February_22nd"></span>Saturday, February 22nd</h3></div> <table class="wikitable"> <tbody><tr> <th>Session details </th> <th>Title, description and speakers </th></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740250800" class="extiw" title="toolforge:zonestamp/1740250800"><time datetime="2025-02-22T19:00:00+00:00" class="zonestamp">19:00 UTC</time></a></b> <p>50min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=WmHhcBIFQAM">YouTube</a> </p> </td> <td><b>Wikidata live editing – Reusing Wikidata: Playing it Safe </b> <p><a href="/wiki/User:Ainali" title="User:Ainali"><span title="user page of Ainali">Ainali</span></a> and <a href="/wiki/User:Abbe98" title="User:Abbe98"><span title="user page of Abbe98">Abbe98</span></a> do some live editing, and discuss the thought process of what we are doing and why we do it. This time, we will show how we reuse data from Wikidata in practice. From identifying data, preparing SPARQL queries and then reusing it externally with quality checks. We'll also explore how to future-proof queries and improve Wikidata items so that they can be used as quality providers. </p> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Monday,_February_24th"><span id="Monday.2C_February_24th"></span>Monday, February 24th</h3></div> <table class="wikitable"> <tbody><tr> <th>Session details </th> <th>Title, description and speakers </th></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740416400" class="extiw" title="toolforge:zonestamp/1740416400"><time datetime="2025-02-24T17:00:00+00:00" class="zonestamp">17:00 UTC</time></a></b> <p>50min </p><p>▶️ Replay <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=ACUzCKU2eJM">Youtube</a> (starts at 0:04) </p> </td> <td><b>Helping AI learn from Wikidata</b> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Data_Reuse_Days_2025_-_Wikidata_Embedding_Project.pdf" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/81/Data_Reuse_Days_2025_-_Wikidata_Embedding_Project.pdf/page1-220px-Data_Reuse_Days_2025_-_Wikidata_Embedding_Project.pdf.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/81/Data_Reuse_Days_2025_-_Wikidata_Embedding_Project.pdf/page1-330px-Data_Reuse_Days_2025_-_Wikidata_Embedding_Project.pdf.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/81/Data_Reuse_Days_2025_-_Wikidata_Embedding_Project.pdf/page1-440px-Data_Reuse_Days_2025_-_Wikidata_Embedding_Project.pdf.jpg 2x" data-file-width="1500" data-file-height="843" /></a><figcaption>slides</figcaption></figure> <p>Join us to discover how the <a href="/wiki/Wikidata:Embedding_Project" title="Wikidata:Embedding Project">Wikidata Embedding Project</a> is making it easier to explore Wikidata with AI. With an open-source Vector Database built on top of Wikidata, you can search for entities using natural language and develop new tools and applications in fun, creative ways. </p><p><i>Speaker</i>: <a href="/wiki/User:Philippe_Saade_(WMDE)" title="User:Philippe Saade (WMDE)"><span title="user page of Philippe Saade (WMDE)">Philippe Saade (WMDE)</span></a> </p> </td></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740420000" class="extiw" title="toolforge:zonestamp/1740420000"><time datetime="2025-02-24T18:00:00+00:00" class="zonestamp">18:00 UTC</time></a></b> <p>25min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=ACUzCKU2eJM">Youtube</a> (starts at 43:00) </p> </td> <td><b>Model Context Protocol for Wikidata</b> <p>How can casual users access information from Wikidata via LLMs? We present a tool that can help with this. Prerequisite knowledge: Basic knowledge of Wikidata and use of LLMs like ChatGPT. </p><p><i>Speaker</i>: <a href="/wiki/User:DErenrich-WMF" title="User:DErenrich-WMF"><span title="user page of DErenrich-WMF">DErenrich-WMF</span></a> </p> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Tuesday,_February_25th"><span id="Tuesday.2C_February_25th"></span>Tuesday, February 25th</h3></div> <table class="wikitable"> <tbody><tr> <th>Session details </th> <th>Title, description and speakers </th></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740502800" class="extiw" title="toolforge:zonestamp/1740502800"><time datetime="2025-02-25T17:00:00+00:00" class="zonestamp">17:00 UTC</time></a></b> <p>50min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=WFqQlkWRN-Q">Youtube</a> (starts at 0:03) </p> </td> <td><b>Wikidata Query Service: Where are we? Where is it going?</b> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Data_Reuse_Days_2025_-_Wikidata_Query_Service_update.pdf" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Data_Reuse_Days_2025_-_Wikidata_Query_Service_update.pdf/page1-220px-Data_Reuse_Days_2025_-_Wikidata_Query_Service_update.pdf.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Data_Reuse_Days_2025_-_Wikidata_Query_Service_update.pdf/page1-330px-Data_Reuse_Days_2025_-_Wikidata_Query_Service_update.pdf.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Data_Reuse_Days_2025_-_Wikidata_Query_Service_update.pdf/page1-440px-Data_Reuse_Days_2025_-_Wikidata_Query_Service_update.pdf.jpg 2x" data-file-width="1500" data-file-height="843" /></a><figcaption>slides</figcaption></figure> <p>Wikidata Query Service is Wikidata's SPARQL endpoint that allows you to query all of Wikidata's data. Over the past years it has been struggling. In this session we will give an update on what we have done to stabilize the service and what is coming next. </p><p><i>Speakers</i>: <a href="/wiki/User:GLederrey_(WMF)" title="User:GLederrey (WMF)"><span title="user page of GLederrey (WMF)">GLederrey (WMF)</span></a>, <a href="/wiki/User:DCausse_(WMF)" title="User:DCausse (WMF)"><span title="user page of DCausse (WMF)">DCausse (WMF)</span></a>, <a href="/wiki/User:Lydia_Pintscher_(WMDE)" title="User:Lydia Pintscher (WMDE)"><span title="user page of Lydia Pintscher (WMDE)">Lydia Pintscher (WMDE)</span></a> </p> </td></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740506400" class="extiw" title="toolforge:zonestamp/1740506400"><time datetime="2025-02-25T18:00:00+00:00" class="zonestamp">18:00 UTC</time></a></b> <p>25min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=WFqQlkWRN-Q">Youtube</a> (starting at 40:32) </p> </td> <td><b>Using Wikidata to provide background information to application users</b> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Wikidata_as_Background_Information.pdf" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Wikidata_as_Background_Information.pdf/page1-220px-Wikidata_as_Background_Information.pdf.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Wikidata_as_Background_Information.pdf/page1-330px-Wikidata_as_Background_Information.pdf.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Wikidata_as_Background_Information.pdf/page1-440px-Wikidata_as_Background_Information.pdf.jpg 2x" data-file-width="1500" data-file-height="843" /></a><figcaption>Combining using Wikipedia and Wikidata for NER, entity linking and background info</figcaption></figure> <p>Wikidata provides valuable information to aid in named entity recognition and for application users to better understand an entity reference in a news or blog article. This presentation overviews how the Wikipedia and Wikidata REST APIs, as well as WDQS, provide this data for the <a rel="nofollow" class="external text" href="https://github.com/ontoinsights/deep_narrative_analysis">Deep Narrative Analysis</a> application. </p><p><i>Speaker</i>: <a href="/wiki/User:AWesterinen" title="User:AWesterinen"><span title="user page of AWesterinen">AWesterinen</span></a> </p> </td></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740508200" class="extiw" title="toolforge:zonestamp/1740508200"><time datetime="2025-02-25T18:30:00+00:00" class="zonestamp">18:30 UTC</time></a></b> <p>25min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=WFqQlkWRN-Q">Youtube</a> (starting at 1:10:45) </p> </td> <td><b>WikiFlix, the free video streaming portal</b> <p><a class="external text" href="https://wikiflix.toolforge.org/">WikiFlix</a> is a video streaming site that uses Wikidata to find freely available movies, mostly older public domain classics and some Creative Commons-licensed ones. The videos are hosted on Wikimedia Commons, YouTube, or the Internet Archive. Currently, over 3600 movies are available on WikiFlix. </p><p><i>Speaker</i>: <a href="/wiki/User:Magnus_Manske" title="User:Magnus Manske"><span title="user page of Magnus Manske">Magnus Manske</span></a> </p> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Wednesday,_February_26th"><span id="Wednesday.2C_February_26th"></span>Wednesday, February 26th</h3></div> <table class="wikitable"> <tbody><tr> <th>Session details </th> <th>Title, description and speakers </th></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1772125200" class="extiw" title="toolforge:zonestamp/1772125200"><time datetime="2026-02-26T17:00:00+00:00" class="zonestamp">17:00 UTC</time></a></b> <p>50min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=XnVzzz-94o0">Youtube</a> </p> </td> <td><b>Application showcase #2</b> <p>Discover tools and applications that use Wikidata's data from their creators, learn more about the technical setup they use and the challenges they may face. Each presentation will be a 10min lightning talk, and at the end of all presentations we'll have a common Q&A and discussion. </p> <ol><li><a rel="nofollow" class="external text" href="https://aletheiaFact.org">AletheiaFact.org</a>: Creating an open fact-checking ecosystem in Brazil (Mateus Santos (<a href="/w/index.php?title=User:TheSocialDev&action=edit&redlink=1" class="new" title="User:TheSocialDev (page does not exist)">User:TheSocialDev</a>) and Tamiris T. Volcean)</li> <li>Wikidata use in <a rel="nofollow" class="external text" href="https://apps.kde.org/itinerary">KDE Itinerary</a> (<a href="/wiki/User:Volker.krause" title="User:Volker.krause"><span title="user page of Volker.krause">Volker.krause</span></a>)</li> <li><a rel="nofollow" class="external text" href="https://vglist.co/">vglist</a>, the cross-platform video games catalog (<a href="/wiki/User:Nicereddy" title="User:Nicereddy"><span title="user page of Nicereddy">Nicereddy</span></a>)</li> <li><a class="external text" href="https://paulina.toolforge.org/">Paulina</a> - Data for the public domain (Jorge Gemetto (<a href="/wiki/User:Pepe_piton" title="User:Pepe piton">User:Pepe piton</a>))</li></ol> </td></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740592800" class="extiw" title="toolforge:zonestamp/1740592800"><time datetime="2025-02-26T18:00:00+00:00" class="zonestamp">18:00 UTC</time></a></b> <p>25min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=XnVzzz-94o0">Youtube</a> (starting at 59:27) </p> </td> <td><b>Scribe: Wikidata Language Learning Keyboards and Lexeme Extraction</b> <p>Scribe applications use Wikidata lexemes to help language learners and enthusiasts. This session will present: 1) The iOS application <a rel="nofollow" class="external text" href="https://github.com/scribe-org/Scribe-iOS">Scribe - Language Keyboards</a>; 2) The current state of <a rel="nofollow" class="external text" href="https://github.com/scribe-org/Scribe-Android">Scribe-Android</a> that we plan to release in mid 2025; 3) The Python command line interface <a rel="nofollow" class="external text" href="https://github.com/scribe-org/Scribe-Data">Scribe-Data</a>, which is what the Scribe community uses to get and process language packs (German nouns, French verbs, etc) of Wikidata data. After the demos we'd be happy to discuss future plans for the Scribe community! (<a rel="nofollow" class="external text" href="https://docs.google.com/presentation/d/1-heb22Vsso-t17zPuERpg49LTY2Y96-PWHS0I2A9wRA/edit?usp=sharing">slides</a>) </p><p><i>Speakers</i>: <a href="/wiki/User:AndrewTavis" title="User:AndrewTavis"><span title="user page of AndrewTavis">AndrewTavis</span></a>, <a href="/wiki/User:Gauthammohanraj" title="User:Gauthammohanraj"><span title="user page of Gauthammohanraj">Gauthammohanraj</span></a>, <a href="/wiki/User:Afi570" title="User:Afi570"><span title="user page of Afi570">Afi570</span></a> </p> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Thursday,_February_27th"><span id="Thursday.2C_February_27th"></span>Thursday, February 27th</h3></div> <table class="wikitable"> <tbody><tr> <th>Session details </th> <th>Title, description and speakers </th></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740675600" class="extiw" title="toolforge:zonestamp/1740675600"><time datetime="2025-02-27T17:00:00+00:00" class="zonestamp">17:00 UTC</time></a></b> <p>25min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=6ukYfRvVXf0">Youtube</a> </p> </td> <td><b>169k Reasons to Care: Wikidata’s Role in Open Library Author Pages</b> <p>In 2024 OpenLibrary.org started populating 169k author pages with information from Wikidata including: language-aware Wikipedia links, description, and links to Google Scholar. I’ll share how and why we made this integration. It would be great to hear ideas from people about how we could expand this integration! </p><p><i>Speaker</i>: <a href="/wiki/User:RayScript" title="User:RayScript"><span title="user page of RayScript">RayScript</span></a> </p> </td></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740677400" class="extiw" title="toolforge:zonestamp/1740677400"><time datetime="2025-02-27T17:30:00+00:00" class="zonestamp">17:30 UTC</time></a></b> <p>25min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=6ukYfRvVXf0">Youtube</a> </p> </td> <td><b>Data round-tripping with authority files</b> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Data_round-tripping_with_authority_files_(Data_Reuse_Days_2025).pdf" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/14/Data_round-tripping_with_authority_files_%28Data_Reuse_Days_2025%29.pdf/page1-220px-Data_round-tripping_with_authority_files_%28Data_Reuse_Days_2025%29.pdf.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/14/Data_round-tripping_with_authority_files_%28Data_Reuse_Days_2025%29.pdf/page1-330px-Data_round-tripping_with_authority_files_%28Data_Reuse_Days_2025%29.pdf.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/14/Data_round-tripping_with_authority_files_%28Data_Reuse_Days_2025%29.pdf/page1-440px-Data_round-tripping_with_authority_files_%28Data_Reuse_Days_2025%29.pdf.jpg 2x" data-file-width="1500" data-file-height="843" /></a><figcaption>slides</figcaption></figure> <p>An overview of the importance of effective <a href="/wiki/Wikidata:Data_round-tripping" title="Wikidata:Data round-tripping">data round-tripping</a> with authority files (AFs), at least the national ones; focus on the procedure to find mistakes in AFs through Wikidata and on how presently we interact with the main AFs. </p><p><i>Speaker</i>: <a href="/wiki/User:Ep%C3%ACdosis" title="User:Epìdosis"><span title="user page of Epìdosis">Epìdosis</span></a> </p> </td></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740074400" class="extiw" title="toolforge:zonestamp/1740074400"><time datetime="2025-02-20T18:00:00+00:00" class="zonestamp">18:00 UTC</time></a></b> <p>10min </p><p>▶️ Replay on <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=6ukYfRvVXf0">Youtube</a> </p> </td> <td><b>Closing session</b> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Data_Reuse_Days_2025_-_Closing.pdf" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Data_Reuse_Days_2025_-_Closing.pdf/page1-220px-Data_Reuse_Days_2025_-_Closing.pdf.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Data_Reuse_Days_2025_-_Closing.pdf/page1-330px-Data_Reuse_Days_2025_-_Closing.pdf.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Data_Reuse_Days_2025_-_Closing.pdf/page1-440px-Data_Reuse_Days_2025_-_Closing.pdf.jpg 2x" data-file-width="1500" data-file-height="843" /></a><figcaption>slides</figcaption></figure> <p>Conclusion of the event and sharing the participants survey. </p><p><i>Speakers</i>: <a href="/wiki/User:Lea_Lacroix_(WMDE)" title="User:Lea Lacroix (WMDE)"><span title="user page of Lea Lacroix (WMDE)">Lea Lacroix (WMDE)</span></a>, <a href="/wiki/User:Lydia_Pintscher_(WMDE)" title="User:Lydia Pintscher (WMDE)"><span title="user page of Lydia Pintscher (WMDE)">Lydia Pintscher (WMDE)</span></a>, <a href="/wiki/User:Ifrahkhanyaree_WMDE" title="User:Ifrahkhanyaree WMDE"><span title="user page of Ifrahkhanyaree WMDE">Ifrahkhanyaree WMDE</span></a> </p> </td></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740679800" class="extiw" title="toolforge:zonestamp/1740679800"><time datetime="2025-02-27T18:10:00+00:00" class="zonestamp">18:10 UTC</time></a></b> <p>60min </p><p>👥 Not recorded </p> </td> <td><b>Let's play Wikidata games together!</b> <p>During this informal session, we will play some Wikidata-based games and chat. </p><p><i>Facilitation</i>: <a href="/wiki/User:Lydia_Pintscher_(WMDE)" title="User:Lydia Pintscher (WMDE)"><span title="user page of Lydia Pintscher (WMDE)">Lydia Pintscher (WMDE)</span></a> </p> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Friday,_February_28th"><span id="Friday.2C_February_28th"></span>Friday, February 28th</h3></div> <table class="wikitable"> <tbody><tr> <th>Session details </th> <th>Title, description and speakers </th></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740733200" class="extiw" title="toolforge:zonestamp/1740733200"><time datetime="2025-02-28T09:00:00+00:00" class="zonestamp">09:00 UTC</time></a></b> <p>👥 Live on <a href="/wiki/Special:EventDetails/1050" title="Special:EventDetails/1050">Jitsi</a>, not recorded </p> </td> <td><b>Open replay session</b> <p>In autonomy, participants can enter the Jitsi room to watch some of the replay videos of the event, and discuss. </p> </td></tr> <tr> <td><b><a href="https://iw.toolforge.org/zonestamp/1740762000" class="extiw" title="toolforge:zonestamp/1740762000"><time datetime="2025-02-28T17:00:00+00:00" class="zonestamp">17:00 UTC</time></a></b> <p>👥 Live on <a href="/wiki/Special:EventDetails/1050" title="Special:EventDetails/1050">Jitsi</a>, not recorded </p> </td> <td><b>Open replay session</b> <p>In autonomy, participants can enter the Jitsi room to watch some of the replay videos of the event, and discuss. </p> </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2></div> <p><i>Feel free to add more links here!</i> </p> <div class="column-count column-count-2" style="-moz-column-count: 2; -webkit-column-count: 2; column-count: 2;"> <p>🪷 <b>Event useful links</b> </p> <ul><li><a rel="nofollow" class="external text" href="https://docs.google.com/presentation/d/1fyk91JlwZ00ox9S5b0Zd5rxEsz8s03EETaeZY4Au8t8/edit?usp=sharing">Slide template</a></li> <li>Main Commons category: <a href="https://commons.wikimedia.org/wiki/Category:Data_Reuse_Days_2025" class="extiw" title="c:Category:Data Reuse Days 2025">Data Reuse Days 2025</a></li> <li><a href="https://commons.wikimedia.org/wiki/Category:Data_Reuse_Days_2025_presentations" class="extiw" title="c:Category:Data Reuse Days 2025 presentations">Sessions slides and materials</a></li> <li><a href="https://commons.wikimedia.org/wiki/Category:Data_Reuse_Days_2025_videos" class="extiw" title="c:Category:Data Reuse Days 2025 videos">Videos</a></li> <li><a rel="nofollow" class="external text" href="https://www.youtube.com/playlist?list=PLduaHBu_3ejMPb2P_3XWnLH4K14f7wGRd">Youtube playlist</a></li></ul> <p>🖋️ Related <b>documentation pages</b> </p> <ul><li><a href="/wiki/Wikidata:For_developers" title="Wikidata:For developers">Wikidata:For developers</a></li> <li><a href="/wiki/Wikidata:Data_access" title="Wikidata:Data access">Wikidata:Data access</a></li> <li><a href="/wiki/Wikidata:SPARQL_query_service/Wikidata_Query_Help" title="Wikidata:SPARQL query service/Wikidata Query Help">Wikidata:SPARQL query service/Wikidata Query Help</a></li> <li><a href="/wiki/Wikidata:Tools/For_programmers" title="Wikidata:Tools/For programmers">Wikidata:Tools/For programmers</a></li> <li><a href="https://commons.wikimedia.org/wiki/Category:Data_Reuse_Days_2022_presentations" class="extiw" title="c:Category:Data Reuse Days 2022 presentations">Slides</a> and <a rel="nofollow" class="external text" href="https://www.youtube.com/playlist?list=PLduaHBu_3ejNaZk15ybdHNWY8z-FyunRm">videos</a> of the <a href="/wiki/Wikidata:Events/Data_Reuse_Days_2022" title="Wikidata:Events/Data Reuse Days 2022">Data Reuse Days 2022</a> event</li></ul> <p>💬 <b>Telegram</b> and other social media </p> <ul><li><a rel="nofollow" class="external text" href="https://t.me/joinchat/SPlRqI5xcw7ugXlE">Wikidata general Telegram group</a></li> <li>On Mastodon & co: <b>#DataReuseDays2025</b></li></ul> <p>▶️ <b>Selection of sessions</b> from previous events </p> <ul><li>TBD</li></ul> </div>    </div><noscript><img src="https://auth.wikimedia.org/loginwiki/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=1" alt="" width="1" height="1" style="border: none; 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