CINXE.COM
Base Class - AutoKeras
<!doctype html> <html lang="en" class="no-js"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width,initial-scale=1"> <meta name="description" content="Documentation for AutoKeras."> <link rel="canonical" href="http://autokeras.com/base/"> <link rel="prev" href="../auto_model/"> <link rel="next" href="../node/"> <link rel="icon" href="/img/favicon.png"> <meta name="generator" content="mkdocs-1.5.3, mkdocs-material-9.5.14"> <title>Base Class - AutoKeras</title> <link rel="stylesheet" href="../assets/stylesheets/main.10ba22f1.min.css"> <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin> <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,300i,400,400i,700,700i%7CRoboto+Mono:400,400i,700,700i&display=fallback"> <style>:root{--md-text-font:"Roboto";--md-code-font:"Roboto Mono"}</style> <link rel="stylesheet" href="../stylesheets/extra.css"> <script>__md_scope=new URL("..",location),__md_hash=e=>[...e].reduce((e,_)=>(e<<5)-e+_.charCodeAt(0),0),__md_get=(e,_=localStorage,t=__md_scope)=>JSON.parse(_.getItem(t.pathname+"."+e)),__md_set=(e,_,t=localStorage,a=__md_scope)=>{try{t.setItem(a.pathname+"."+e,JSON.stringify(_))}catch(e){}}</script> <script id="__analytics">function __md_analytics(){function n(){dataLayer.push(arguments)}window.dataLayer=window.dataLayer||[],n("js",new Date),n("config","G-GTF9QP8DFD"),document.addEventListener("DOMContentLoaded",function(){document.forms.search&&document.forms.search.query.addEventListener("blur",function(){this.value&&n("event","search",{search_term:this.value})}),document$.subscribe(function(){var a=document.forms.feedback;if(void 0!==a)for(var e of a.querySelectorAll("[type=submit]"))e.addEventListener("click",function(e){e.preventDefault();var t=document.location.pathname,e=this.getAttribute("data-md-value");n("event","feedback",{page:t,data:e}),a.firstElementChild.disabled=!0;e=a.querySelector(".md-feedback__note [data-md-value='"+e+"']");e&&(e.hidden=!1)}),a.hidden=!1}),location$.subscribe(function(e){n("config","G-GTF9QP8DFD",{page_path:e.pathname})})});var e=document.createElement("script");e.async=!0,e.src="https://www.googletagmanager.com/gtag/js?id=G-GTF9QP8DFD",document.getElementById("__analytics").insertAdjacentElement("afterEnd",e)}</script> <script>"undefined"!=typeof __md_analytics&&__md_analytics()</script> </head> <body dir="ltr"> <input class="md-toggle" data-md-toggle="drawer" type="checkbox" id="__drawer" autocomplete="off"> <input class="md-toggle" data-md-toggle="search" type="checkbox" id="__search" autocomplete="off"> <label class="md-overlay" for="__drawer"></label> <div data-md-component="skip"> <a href="#node" class="md-skip"> Skip to content </a> </div> <div data-md-component="announce"> </div> <header class="md-header md-header--shadow" data-md-component="header"> <nav class="md-header__inner md-grid" aria-label="Header"> <a href=".." title="AutoKeras" class="md-header__button md-logo" aria-label="AutoKeras" data-md-component="logo"> <img src="/img/logo_white.svg" alt="logo"> </a> <label class="md-header__button md-icon" for="__drawer"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M3 6h18v2H3V6m0 5h18v2H3v-2m0 5h18v2H3v-2Z"/></svg> </label> <div class="md-header__title" data-md-component="header-title"> <div class="md-header__ellipsis"> <div class="md-header__topic"> <span class="md-ellipsis"> AutoKeras </span> </div> <div class="md-header__topic" data-md-component="header-topic"> <span class="md-ellipsis"> Base Class </span> </div> </div> </div> <script>var media,input,key,value,palette=__md_get("__palette");if(palette&&palette.color){"(prefers-color-scheme)"===palette.color.media&&(media=matchMedia("(prefers-color-scheme: light)"),input=document.querySelector(media.matches?"[data-md-color-media='(prefers-color-scheme: light)']":"[data-md-color-media='(prefers-color-scheme: dark)']"),palette.color.media=input.getAttribute("data-md-color-media"),palette.color.scheme=input.getAttribute("data-md-color-scheme"),palette.color.primary=input.getAttribute("data-md-color-primary"),palette.color.accent=input.getAttribute("data-md-color-accent"));for([key,value]of Object.entries(palette.color))document.body.setAttribute("data-md-color-"+key,value)}</script> <label class="md-header__button md-icon" for="__search"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5Z"/></svg> </label> <div class="md-search" data-md-component="search" role="dialog"> <label class="md-search__overlay" for="__search"></label> <div class="md-search__inner" role="search"> <form class="md-search__form" name="search"> <input type="text" class="md-search__input" name="query" aria-label="Search" placeholder="Search" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false" data-md-component="search-query" required> <label class="md-search__icon md-icon" for="__search"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5Z"/></svg> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12Z"/></svg> </label> <nav class="md-search__options" aria-label="Search"> <button type="reset" class="md-search__icon md-icon" title="Clear" aria-label="Clear" tabindex="-1"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M19 6.41 17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12 19 6.41Z"/></svg> </button> </nav> </form> <div class="md-search__output"> <div class="md-search__scrollwrap" data-md-scrollfix> <div class="md-search-result" data-md-component="search-result"> <div class="md-search-result__meta"> Initializing search </div> <ol class="md-search-result__list" role="presentation"></ol> </div> </div> </div> </div> </div> <div class="md-header__source"> <a href="https://github.com/keras-team/autokeras" title="Go to repository" class="md-source" data-md-component="source"> <div class="md-source__icon md-icon"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><!--! Font Awesome Free 6.5.1 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2023 Fonticons, Inc.--><path d="M439.55 236.05 244 40.45a28.87 28.87 0 0 0-40.81 0l-40.66 40.63 51.52 51.52c27.06-9.14 52.68 16.77 43.39 43.68l49.66 49.66c34.23-11.8 61.18 31 35.47 56.69-26.49 26.49-70.21-2.87-56-37.34L240.22 199v121.85c25.3 12.54 22.26 41.85 9.08 55a34.34 34.34 0 0 1-48.55 0c-17.57-17.6-11.07-46.91 11.25-56v-123c-20.8-8.51-24.6-30.74-18.64-45L142.57 101 8.45 235.14a28.86 28.86 0 0 0 0 40.81l195.61 195.6a28.86 28.86 0 0 0 40.8 0l194.69-194.69a28.86 28.86 0 0 0 0-40.81z"/></svg> </div> <div class="md-source__repository"> GitHub </div> </a> </div> </nav> </header> <div class="md-container" data-md-component="container"> <main class="md-main" data-md-component="main"> <div class="md-main__inner md-grid"> <div class="md-sidebar md-sidebar--primary" data-md-component="sidebar" data-md-type="navigation" > <div class="md-sidebar__scrollwrap"> <div class="md-sidebar__inner"> <nav class="md-nav md-nav--primary" aria-label="Navigation" data-md-level="0"> <label class="md-nav__title" for="__drawer"> <a href=".." title="AutoKeras" class="md-nav__button md-logo" aria-label="AutoKeras" data-md-component="logo"> <img src="/img/logo_white.svg" alt="logo"> </a> AutoKeras </label> <div class="md-nav__source"> <a href="https://github.com/keras-team/autokeras" title="Go to repository" class="md-source" data-md-component="source"> <div class="md-source__icon md-icon"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><!--! Font Awesome Free 6.5.1 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2023 Fonticons, Inc.--><path d="M439.55 236.05 244 40.45a28.87 28.87 0 0 0-40.81 0l-40.66 40.63 51.52 51.52c27.06-9.14 52.68 16.77 43.39 43.68l49.66 49.66c34.23-11.8 61.18 31 35.47 56.69-26.49 26.49-70.21-2.87-56-37.34L240.22 199v121.85c25.3 12.54 22.26 41.85 9.08 55a34.34 34.34 0 0 1-48.55 0c-17.57-17.6-11.07-46.91 11.25-56v-123c-20.8-8.51-24.6-30.74-18.64-45L142.57 101 8.45 235.14a28.86 28.86 0 0 0 0 40.81l195.61 195.6a28.86 28.86 0 0 0 40.8 0l194.69-194.69a28.86 28.86 0 0 0 0-40.81z"/></svg> </div> <div class="md-source__repository"> GitHub </div> </a> </div> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href=".." class="md-nav__link"> <span class="md-ellipsis"> Home </span> </a> </li> <li class="md-nav__item"> <a href="../install/" class="md-nav__link"> <span class="md-ellipsis"> Installation </span> </a> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_3" > <label class="md-nav__link" for="__nav_3" id="__nav_3_label" tabindex="0"> <span class="md-ellipsis"> Tutorials </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="1" aria-labelledby="__nav_3_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_3"> <span class="md-nav__icon md-icon"></span> Tutorials </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../tutorial/overview/" class="md-nav__link"> <span class="md-ellipsis"> Overview </span> </a> </li> <li class="md-nav__item"> <a href="../tutorial/image_classification/" class="md-nav__link"> <span class="md-ellipsis"> Image Classification </span> </a> </li> <li class="md-nav__item"> <a href="../tutorial/image_regression/" class="md-nav__link"> <span class="md-ellipsis"> Image Regression </span> </a> </li> <li class="md-nav__item"> <a href="../tutorial/text_classification/" class="md-nav__link"> <span class="md-ellipsis"> Text Classification </span> </a> </li> <li class="md-nav__item"> <a href="../tutorial/text_regression/" class="md-nav__link"> <span class="md-ellipsis"> Text Regression </span> </a> </li> <li class="md-nav__item"> <a href="../tutorial/multi/" class="md-nav__link"> <span class="md-ellipsis"> Multi-Modal and Multi-Task </span> </a> </li> <li class="md-nav__item"> <a href="../tutorial/customized/" class="md-nav__link"> <span class="md-ellipsis"> Customized Model </span> </a> </li> <li class="md-nav__item"> <a href="../tutorial/export/" class="md-nav__link"> <span class="md-ellipsis"> Export Model </span> </a> </li> <li class="md-nav__item"> <a href="../tutorial/load/" class="md-nav__link"> <span class="md-ellipsis"> Load Data from Disk </span> </a> </li> <li class="md-nav__item"> <a href="../tutorial/faq/" class="md-nav__link"> <span class="md-ellipsis"> FAQ </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_4" > <label class="md-nav__link" for="__nav_4" id="__nav_4_label" tabindex="0"> <span class="md-ellipsis"> Extensions </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="1" aria-labelledby="__nav_4_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_4"> <span class="md-nav__icon md-icon"></span> Extensions </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../extensions/tf_cloud/" class="md-nav__link"> <span class="md-ellipsis"> TensorFlow Cloud </span> </a> </li> <li class="md-nav__item"> <a href="../extensions/trains/" class="md-nav__link"> <span class="md-ellipsis"> TRAINS </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item"> <a href="../docker/" class="md-nav__link"> <span class="md-ellipsis"> Docker </span> </a> </li> <li class="md-nav__item"> <a href="../contributing/" class="md-nav__link"> <span class="md-ellipsis"> Contributing Guide </span> </a> </li> <li class="md-nav__item md-nav__item--active md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_7" checked> <label class="md-nav__link" for="__nav_7" id="__nav_7_label" tabindex="0"> <span class="md-ellipsis"> Documentation </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="1" aria-labelledby="__nav_7_label" aria-expanded="true"> <label class="md-nav__title" for="__nav_7"> <span class="md-nav__icon md-icon"></span> Documentation </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../image_classifier/" class="md-nav__link"> <span class="md-ellipsis"> ImageClassifier </span> </a> </li> <li class="md-nav__item"> <a href="../image_regressor/" class="md-nav__link"> <span class="md-ellipsis"> ImageRegressor </span> </a> </li> <li class="md-nav__item"> <a href="../text_classifier/" class="md-nav__link"> <span class="md-ellipsis"> TextClassifier </span> </a> </li> <li class="md-nav__item"> <a href="../text_regressor/" class="md-nav__link"> <span class="md-ellipsis"> TextRegressor </span> </a> </li> <li class="md-nav__item"> <a href="../auto_model/" class="md-nav__link"> <span class="md-ellipsis"> AutoModel </span> </a> </li> <li class="md-nav__item md-nav__item--active"> <input class="md-nav__toggle md-toggle" type="checkbox" id="__toc"> <label class="md-nav__link md-nav__link--active" for="__toc"> <span class="md-ellipsis"> Base Class </span> <span class="md-nav__icon md-icon"></span> </label> <a href="./" class="md-nav__link md-nav__link--active"> <span class="md-ellipsis"> Base Class </span> </a> <nav class="md-nav md-nav--secondary" aria-label="Table of contents"> <label class="md-nav__title" for="__toc"> <span class="md-nav__icon md-icon"></span> Table of contents </label> <ul class="md-nav__list" data-md-component="toc" data-md-scrollfix> <li class="md-nav__item"> <a href="#node" class="md-nav__link"> <span class="md-ellipsis"> Node </span> </a> </li> <li class="md-nav__item"> <a href="#block" class="md-nav__link"> <span class="md-ellipsis"> Block </span> </a> </li> <li class="md-nav__item"> <a href="#build" class="md-nav__link"> <span class="md-ellipsis"> build </span> </a> </li> <li class="md-nav__item"> <a href="#head" class="md-nav__link"> <span class="md-ellipsis"> Head </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item"> <a href="../node/" class="md-nav__link"> <span class="md-ellipsis"> Node </span> </a> </li> <li class="md-nav__item"> <a href="../block/" class="md-nav__link"> <span class="md-ellipsis"> Block </span> </a> </li> <li class="md-nav__item"> <a href="../utils/" class="md-nav__link"> <span class="md-ellipsis"> Utils </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item"> <a href="../benchmarks/" class="md-nav__link"> <span class="md-ellipsis"> Benchmarks </span> </a> </li> <li class="md-nav__item"> <a href="../about/" class="md-nav__link"> <span class="md-ellipsis"> About </span> </a> </li> </ul> </nav> </div> </div> </div> <div class="md-sidebar md-sidebar--secondary" data-md-component="sidebar" data-md-type="toc" > <div class="md-sidebar__scrollwrap"> <div class="md-sidebar__inner"> <nav class="md-nav md-nav--secondary" aria-label="Table of contents"> <label class="md-nav__title" for="__toc"> <span class="md-nav__icon md-icon"></span> Table of contents </label> <ul class="md-nav__list" data-md-component="toc" data-md-scrollfix> <li class="md-nav__item"> <a href="#node" class="md-nav__link"> <span class="md-ellipsis"> Node </span> </a> </li> <li class="md-nav__item"> <a href="#block" class="md-nav__link"> <span class="md-ellipsis"> Block </span> </a> </li> <li class="md-nav__item"> <a href="#build" class="md-nav__link"> <span class="md-ellipsis"> build </span> </a> </li> <li class="md-nav__item"> <a href="#head" class="md-nav__link"> <span class="md-ellipsis"> Head </span> </a> </li> </ul> </nav> </div> </div> </div> <div class="md-content" data-md-component="content"> <article class="md-content__inner md-typeset"> <h1>Base Class</h1> <p><span style="float:right;"><a href="https://github.com/keras-team/autokeras/blob/master/autokeras/engine/node.py#L16">[source]</a></span></p> <h3 id="node">Node</h3> <div class="highlight"><pre><span></span><code><span class="n">autokeras</span><span class="o">.</span><span class="n">Node</span><span class="p">(</span><span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> </code></pre></div> <p>The nodes in a network connecting the blocks.</p> <hr /> <p><span style="float:right;"><a href="https://github.com/keras-team/autokeras/blob/master/autokeras/engine/block.py#L21">[source]</a></span></p> <h3 id="block">Block</h3> <div class="highlight"><pre><span></span><code><span class="n">autokeras</span><span class="o">.</span><span class="n">Block</span><span class="p">(</span><span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> </code></pre></div> <p>The base class for different Block.</p> <p>The Block can be connected together to build the search space for an AutoModel. Notably, many args in the <strong>init</strong> function are defaults to be a tunable variable when not specified by the user.</p> <hr /> <p><span style="float:right;"><a href="https://github.com/keras-team/autokeras/blob/master/autokeras/engine/block.py#L67">[source]</a></span></p> <h3 id="build">build</h3> <div class="highlight"><pre><span></span><code><span class="n">Block</span><span class="o">.</span><span class="n">build</span><span class="p">(</span><span class="n">hp</span><span class="p">,</span> <span class="n">inputs</span><span class="o">=</span><span class="kc">None</span><span class="p">)</span> </code></pre></div> <p>Build the Block into a real Keras Model.</p> <p>The subclasses should override this function and return the output node.</p> <p><strong>Arguments</strong></p> <ul> <li><strong>hp</strong>: HyperParameters. The hyperparameters for building the model.</li> <li><strong>inputs</strong>: A list of input node(s).</li> </ul> <hr /> <p><span style="float:right;"><a href="https://github.com/keras-team/autokeras/blob/master/autokeras/engine/head.py#L54">[source]</a></span></p> <h3 id="head">Head</h3> <div class="highlight"><pre><span></span><code><span class="n">autokeras</span><span class="o">.</span><span class="n">Head</span><span class="p">(</span><span class="n">loss</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">metrics</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> </code></pre></div> <p>Base class for the heads, e.g. classification, regression.</p> <p><strong>Arguments</strong></p> <ul> <li><strong>loss</strong> <code>str | Callable | tensorflow.keras.losses.Loss | None</code>: A Keras loss function. Defaults to None. If None, the loss will be inferred from the AutoModel.</li> <li><strong>metrics</strong> <code>List[str | Callable | tensorflow.keras.metrics.Metric] | List[List[str | Callable | tensorflow.keras.metrics.Metric]] | Dict[str, str | Callable | tensorflow.keras.metrics.Metric] | None</code>: A list of Keras metrics. Defaults to None. If None, the metrics will be inferred from the AutoModel.</li> </ul> <hr /> </article> </div> <script>var target=document.getElementById(location.hash.slice(1));target&&target.name&&(target.checked=target.name.startsWith("__tabbed_"))</script> </div> </main> <footer class="md-footer"> <div class="md-footer-meta md-typeset"> <div class="md-footer-meta__inner md-grid"> <div class="md-copyright"> Made with <a href="https://squidfunk.github.io/mkdocs-material/" target="_blank" rel="noopener"> Material for MkDocs </a> </div> </div> </div> </footer> </div> <div class="md-dialog" data-md-component="dialog"> <div class="md-dialog__inner md-typeset"></div> </div> <script id="__config" type="application/json">{"base": "..", "features": [], "search": "../assets/javascripts/workers/search.b8dbb3d2.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}}</script> <script src="../assets/javascripts/bundle.bd41221c.min.js"></script> <script src="https://unpkg.com/mermaid@8.4.4/dist/mermaid.min.js"></script> </body> </html>