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Observation - Schema.org Type
<!DOCTYPE html> <html lang="en"> <!-- Generated from TermPageEx.j2 --> <head> <title>Observation - Schema.org Type</title> <meta charset="utf-8" > <meta name="viewport" content="width=device-width, initial-scale=1"> <meta name="description" content="Schema.org Type: Observation - Instances of the class <a class="localLink" href="/Observation">Observation</a> are used to specify observations about an entity at a particular time. The principal properties of an <a class="localLink" href="/Observation">Observation</a> are <a class="localLink" href="/observationAbout">observationAbout</a>, <a class="localLink" href="/measuredProperty">measuredProperty</a>, <a class="localLink" href="/statType">statType</a>, [[value] and <a class="localLink" href="/observationDate">observationDate</a> and <a class="localLink" href="/measuredProperty">measuredProperty</a>. Some but not all Observations represent a <a class="localLink" href="/QuantitativeValue">QuantitativeValue</a>. Quantitative observations can be about a <a class="localLink" href="/StatisticalVariable">StatisticalVariable</a>, which is an abstract specification about which we can make observations that are grounded at a particular location and time.<br/><br/> Observations can also encode a subset of simple RDF-like statements (its observationAbout, a StatisticalVariable, defining the measuredPoperty; its observationAbout property indicating the entity the statement is about, and <a class="localLink" href="/value">value</a> )<br/><br/> In the context of a quantitative knowledge graph, typical properties could include <a class="localLink" href="/measuredProperty">measuredProperty</a>, <a class="localLink" href="/observationAbout">observationAbout</a>, <a class="localLink" href="/observationDate">observationDate</a>, <a class="localLink" href="/value">value</a>, <a class="localLink" href="/unitCode">unitCode</a>, <a class="localLink" href="/unitText">unitText</a>, <a class="localLink" href="/measurementMethod">measurementMethod</a>." /> <link rel="shortcut icon" type="image/png" href="/docs/favicon.ico"/> <link rel="stylesheet" type="text/css" href="/docs/schemaorg.css" /> <link rel="stylesheet" type="text/css" href="/docs/devnote.css" /> <link rel="stylesheet" type="text/css" href="/docs/prettify.css" /> <script src="/docs/prettify.js"></script> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script src="/docs/schemaorg.js"></script> <!-- <script src="/docs/debugwindow/viewconsole.js"></script> --> <script src="/docs/sdotermpage.js"></script> <link rel="stylesheet" type="text/css" href="/docs/sdotermpage.css" /> <script src="/docs/pretty-markup/schemarama-parsing.bundle.min.js"></script> <script src="/docs/pretty-markup/layout.js"></script> <link rel="stylesheet" type="text/css" href="/docs/pretty-markup/style.css" /> <script src="/docs/clipboard/clipboard.min.js"></script> <link rel="canonical" href="https://schema.org/Observation" /> </head> <body> <!-- Header start from PageHeader.j2 --> <!-- Static Doc Insert PageHead --> <div class="devnote"><b>Note</b>: You are viewing the development version of <a href="https://schema.org">Schema.org</a>. See <a href="/docs/howwework.html">how we work</a> for more details. </div> <div id="container"> <div id="headerwrap"> <div id="pagehead1" class="mobnav"> <div class="header-block" id="pagehead-left"> <div id="sitename2"> <a href="/">Schema.org</a> </div> </div> <div class="header-block header-block-right mobnav" id="pagehead-mid"> <div id="selectionbar2"> <ul> <li> <a href="/docs/documents.html">Docs</a> </li> <li> <a href="/docs/schemas.html">Schemas</a> </li> <li> <a href="https://validator.schema.org">Validate</a> </li> <li> <a href="/docs/about.html">About</a> </li> </ul> </div> <!-- selectionbar --> </div> <div class="header-block header-block-right mobnav" id="pagehead-right"> <div id="cse-search-form2" class="live-only"> <div class="gcse-searchbox-only" data-resultsUrl="/docs/search_results.html"></div> </div> </div> <div class="header-block mobnav" id="navicon2"> <a href="javascript:void(0);" class="icon" onclick="navFunction()"> <svg id="open" width="24px" height="24px" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <g clip-path="url(#clip0_3560_173)"> <path d="M3 18V16H21V18H3ZM3 13V11H21V13H3ZM3 8V6H21V8H3Z" fill="#444746"/> </g> <defs> <clipPath id="clip0_3560_173"> <rect width="24" height="24" fill="white"/> </clipPath> </defs> </svg> <svg id="close" width="24px" height="24px" viewBox="0 -960 960 960" fill="#444746" xmlns="http://www.w3.org/2000/svg"> <path d="m256-200-56-56 224-224-224-224 56-56 224 224 224-224 56 56-224 224 224 224-56 56-224-224-224 224Z"/> </svg> </a> </div> </div> </div> <div class="header-bottom"></div> </div> <!-- Header end from PageHeader.j2 --> <div id="mainContent"> <div id="infoblock" class="jumptarget" title="Details"> <!-- Label / termType / canonical URI --> <div id="infohead"> <h1>Observation</h1> <div class="infotype">A Schema.org Type</div> <!-- Pending/retired/term in section --> <br/><em>This term is in the "new" area - implementation feedback and adoption from applications and websites can help improve our definitions.</em> </div> <!-- Breadcrumb display of term inheritance --> <div class="superPaths" itemscope itemtype="https://schema.org/BreadcrumbList"> <span itemscope itemprop="itemListElement" itemtype="https://schema.org/ListItem"> <meta itemprop="name" content="Thing" /> <meta itemprop="position" content="1" /> <a href="/Thing" itemprop="item" class="core" title="Thing">Thing</a> </span> > <span itemscope itemprop="itemListElement" itemtype="https://schema.org/ListItem"> <meta itemprop="name" content="Intangible" /> <meta itemprop="position" content="2" /> <a href="/Intangible" itemprop="item" class="core" title="Intangible">Intangible</a> </span> > <span itemscope itemprop="itemListElement" itemtype="https://schema.org/ListItem"> <meta itemprop="name" content="Observation" /> <meta itemprop="position" content="3" /> <a href="/Observation" itemprop="item" class="core" title="Observation">Observation</a> </span> <br/> <span itemscope itemprop="itemListElement" itemtype="https://schema.org/ListItem"> <meta itemprop="name" content="Thing" /> <meta itemprop="position" content="1" /> <a href="/Thing" itemprop="item" class="core" title="Thing">Thing</a> </span> > <span itemscope itemprop="itemListElement" itemtype="https://schema.org/ListItem"> <meta itemprop="name" content="Intangible" /> <meta itemprop="position" content="2" /> <a href="/Intangible" itemprop="item" class="core" title="Intangible">Intangible</a> </span> > <span itemscope itemprop="itemListElement" itemtype="https://schema.org/ListItem"> <meta itemprop="name" content="StructuredValue" /> <meta itemprop="position" content="3" /> <a href="/StructuredValue" itemprop="item" class="core" title="StructuredValue">StructuredValue</a> </span> > <span itemscope itemprop="itemListElement" itemtype="https://schema.org/ListItem"> <meta itemprop="name" content="QuantitativeValue" /> <meta itemprop="position" content="4" /> <a href="/QuantitativeValue" itemprop="item" class="core" title="QuantitativeValue">QuantitativeValue</a> </span> > <span itemscope itemprop="itemListElement" itemtype="https://schema.org/ListItem"> <meta itemprop="name" content="Observation" /> <meta itemprop="position" content="5" /> <a href="/Observation" itemprop="item" class="core" title="Observation">Observation</a> </span> <br/> </div> <!-- More Block --> <div> <div id='infobox' style='text-align: right; padding-right: 5px;' role="checkbox" aria-checked="false"> <label for="morecheck"><b><span style="cursor: pointer;">[more...]</span></b></label> </div> <input type='checkbox' checked="checked" style='display: none' id=morecheck><div id='infomsg' style='background-color: #EEEEEE; text-align: left; padding: 0.5em;'> <ul><li> <span class="canonicalUrl">Canonical URL: https://schema.org/Observation</span> </li> <!--<li><a href='https://docs.google.com/a/google.com/forms/d/1krxHlWJAO3JgvHRZV9Rugkr9VYnMdrI10xbGsWt733c/viewform?entry.1174568178&entry.41124795=https://schema.org/Observation&entry.882602760=Type'>Leave public feedback on this term 💬</a></li>--> <li><a href='https://github.com/schemaorg/schemaorg/issues?q=is%3Aissue+is%3Aopen+Observation'>Check for open issues.</a></li> </ul> </div> </div> <!-- Description of term --> <div class="description">Instances of the class <a class="localLink" href="/Observation">Observation</a> are used to specify observations about an entity at a particular time. The principal properties of an <a class="localLink" href="/Observation">Observation</a> are <a class="localLink" href="/observationAbout">observationAbout</a>, <a class="localLink" href="/measuredProperty">measuredProperty</a>, <a class="localLink" href="/statType">statType</a>, [[value] and <a class="localLink" href="/observationDate">observationDate</a> and <a class="localLink" href="/measuredProperty">measuredProperty</a>. Some but not all Observations represent a <a class="localLink" href="/QuantitativeValue">QuantitativeValue</a>. Quantitative observations can be about a <a class="localLink" href="/StatisticalVariable">StatisticalVariable</a>, which is an abstract specification about which we can make observations that are grounded at a particular location and time.<br/><br/> Observations can also encode a subset of simple RDF-like statements (its observationAbout, a StatisticalVariable, defining the measuredPoperty; its observationAbout property indicating the entity the statement is about, and <a class="localLink" href="/value">value</a> )<br/><br/> In the context of a quantitative knowledge graph, typical properties could include <a class="localLink" href="/measuredProperty">measuredProperty</a>, <a class="localLink" href="/observationAbout">observationAbout</a>, <a class="localLink" href="/observationDate">observationDate</a>, <a class="localLink" href="/value">value</a>, <a class="localLink" href="/unitCode">unitCode</a>, <a class="localLink" href="/unitText">unitText</a>, <a class="localLink" href="/measurementMethod">measurementMethod</a>.</div> </div> <!-- infoblock --> <!-- Show properties (if any) associated with term and its supertypes --> <!-- Properties block for term: Observation--> <!-- Identify if this term or one of its supertypes has any associated properties --> <table class="definition-table"> <thead> <tr><th>Property</th><th>Expected Type</th><th>Description</th></tr> </thead> <!-- Properties for Term: Observation--> <tr class="supertype"><th class="supertype-name" colspan="3">Properties from <a href="/Observation" class="ext ext-pending" title="Observation">Observation</a></th></tr> <tr><th class="prop-nam"><code> <a href="/marginOfError" class="ext ext-pending" title="marginOfError">marginOfError</a></code></th> <td class="prop-ect"> <a href="/QuantitativeValue" class="core" title="QuantitativeValue">QuantitativeValue</a></td> <td class="prop-desc">A <a class="localLink" href="/marginOfError">marginOfError</a> for an <a class="localLink" href="/Observation">Observation</a>. </td> </tr> <tr><th class="prop-nam"><code> <a href="/measuredProperty" class="ext ext-pending" title="measuredProperty">measuredProperty</a></code></th> <td class="prop-ect"> <a href="/Property" class="core" title="Property">Property</a></td> <td class="prop-desc">The measuredProperty of an <a class="localLink" href="/Observation">Observation</a>, typically via its <a class="localLink" href="/StatisticalVariable">StatisticalVariable</a>. There are various kinds of applicable <a class="localLink" href="/Property">Property</a>: a schema.org property, a property from other RDF-compatible systems, e.g. W3C RDF Data Cube, Data Commons, Wikidata, or schema.org extensions such as <a href="https://www.gs1.org/voc/?show=properties">GS1's</a>. </td> </tr> <tr><th class="prop-nam"><code> <a href="/measurementDenominator" class="ext ext-pending" title="measurementDenominator">measurementDenominator</a></code></th> <td class="prop-ect"> <a href="/StatisticalVariable" class="core" title="StatisticalVariable">StatisticalVariable</a></td> <td class="prop-desc">Identifies the denominator variable when an observation represents a ratio or percentage. </td> </tr> <tr><th class="prop-nam"><code> <a href="/measurementMethod" class="ext ext-pending" title="measurementMethod">measurementMethod</a></code></th> <td class="prop-ect"> <a href="/DefinedTerm" class="core" title="DefinedTerm">DefinedTerm</a> or <br/> <a href="/MeasurementMethodEnum" class="core" title="MeasurementMethodEnum">MeasurementMethodEnum</a> or <br/> <a href="/Text" class="core" title="Text">Text</a> or <br/> <a href="/URL" class="core" title="URL">URL</a></td> <td class="prop-desc">A subproperty of <a class="localLink" href="/measurementTechnique">measurementTechnique</a> that can be used for specifying specific methods, in particular via <a class="localLink" href="/MeasurementMethodEnum">MeasurementMethodEnum</a>. </td> </tr> <tr><th class="prop-nam"><code> <a href="/measurementQualifier" class="ext ext-pending" title="measurementQualifier">measurementQualifier</a></code></th> <td class="prop-ect"> <a href="/Enumeration" class="core" title="Enumeration">Enumeration</a></td> <td class="prop-desc">Provides additional qualification to an observation. For example, a GDP observation measures the Nominal value. </td> </tr> <tr><th class="prop-nam"><code> <a href="/measurementTechnique" class="ext ext-pending" title="measurementTechnique">measurementTechnique</a></code></th> <td class="prop-ect"> <a href="/DefinedTerm" class="core" title="DefinedTerm">DefinedTerm</a> or <br/> <a href="/MeasurementMethodEnum" class="core" title="MeasurementMethodEnum">MeasurementMethodEnum</a> or <br/> <a href="/Text" class="core" title="Text">Text</a> or <br/> <a href="/URL" class="core" title="URL">URL</a></td> <td class="prop-desc">A technique, method or technology used in an <a class="localLink" href="/Observation">Observation</a>, <a class="localLink" href="/StatisticalVariable">StatisticalVariable</a> or <a class="localLink" href="/Dataset">Dataset</a> (or <a class="localLink" href="/DataDownload">DataDownload</a>, <a class="localLink" href="/DataCatalog">DataCatalog</a>), corresponding to the method used for measuring the corresponding variable(s) (for datasets, described using <a class="localLink" href="/variableMeasured">variableMeasured</a>; for <a class="localLink" href="/Observation">Observation</a>, a <a class="localLink" href="/StatisticalVariable">StatisticalVariable</a>). Often but not necessarily each <a class="localLink" href="/variableMeasured">variableMeasured</a> will have an explicit representation as (or mapping to) an property such as those defined in Schema.org, or other RDF vocabularies and "knowledge graphs". In that case the subproperty of <a class="localLink" href="/variableMeasured">variableMeasured</a> called <a class="localLink" href="/measuredProperty">measuredProperty</a> is applicable.<br/><br/> The <a class="localLink" href="/measurementTechnique">measurementTechnique</a> property helps when extra clarification is needed about how a <a class="localLink" href="/measuredProperty">measuredProperty</a> was measured. This is oriented towards scientific and scholarly dataset publication but may have broader applicability; it is not intended as a full representation of measurement, but can often serve as a high level summary for dataset discovery. <br/><br/> For example, if <a class="localLink" href="/variableMeasured">variableMeasured</a> is: molecule concentration, <a class="localLink" href="/measurementTechnique">measurementTechnique</a> could be: "mass spectrometry" or "nmr spectroscopy" or "colorimetry" or "immunofluorescence". If the <a class="localLink" href="/variableMeasured">variableMeasured</a> is "depression rating", the <a class="localLink" href="/measurementTechnique">measurementTechnique</a> could be "Zung Scale" or "HAM-D" or "Beck Depression Inventory". <br/><br/> If there are several <a class="localLink" href="/variableMeasured">variableMeasured</a> properties recorded for some given data object, use a <a class="localLink" href="/PropertyValue">PropertyValue</a> for each <a class="localLink" href="/variableMeasured">variableMeasured</a> and attach the corresponding <a class="localLink" href="/measurementTechnique">measurementTechnique</a>. The value can also be from an enumeration, organized as a <a class="localLink" href="/MeasurementMetholdEnumeration">MeasurementMetholdEnumeration</a>. </td> </tr> <tr><th class="prop-nam"><code> <a href="/observationAbout" class="ext ext-pending" title="observationAbout">observationAbout</a></code></th> <td class="prop-ect"> <a href="/Place" class="core" title="Place">Place</a> or <br/> <a href="/Thing" class="core" title="Thing">Thing</a></td> <td class="prop-desc">The <a class="localLink" href="/observationAbout">observationAbout</a> property identifies an entity, often a <a class="localLink" href="/Place">Place</a>, associated with an <a class="localLink" href="/Observation">Observation</a>. </td> </tr> <tr><th class="prop-nam"><code> <a href="/observationDate" class="ext ext-pending" title="observationDate">observationDate</a></code></th> <td class="prop-ect"> <a href="/DateTime" class="core" title="DateTime">DateTime</a></td> <td class="prop-desc">The observationDate of an <a class="localLink" href="/Observation">Observation</a>. </td> </tr> <tr><th class="prop-nam"><code> <a href="/observationPeriod" class="ext ext-pending" title="observationPeriod">observationPeriod</a></code></th> <td class="prop-ect"> <a href="/Text" class="core" title="Text">Text</a></td> <td class="prop-desc">The length of time an Observation took place over. The format follows <code>P[0-9]*[Y|M|D|h|m|s]</code>. For example, P1Y is Period 1 Year, P3M is Period 3 Months, P3h is Period 3 hours. </td> </tr> <tr><th class="prop-nam"><code> <a href="/variableMeasured" class="ext ext-pending" title="variableMeasured">variableMeasured</a></code></th> <td class="prop-ect"> <a href="/Property" class="core" title="Property">Property</a> or <br/> <a href="/PropertyValue" class="core" title="PropertyValue">PropertyValue</a> or <br/> <a href="/StatisticalVariable" class="core" title="StatisticalVariable">StatisticalVariable</a> or <br/> <a href="/Text" class="core" title="Text">Text</a></td> <td class="prop-desc">The variableMeasured property can indicate (repeated as necessary) the variables that are measured in some dataset, either described as text or as pairs of identifier and description using PropertyValue, or more explicitly as a <a class="localLink" href="/StatisticalVariable">StatisticalVariable</a>. </td> </tr> <!-- Properties for Term: QuantitativeValue--> <tr class="supertype"><th class="supertype-name" colspan="3">Properties from <a href="/QuantitativeValue" class="core" title="QuantitativeValue">QuantitativeValue</a></th></tr> <tr><th class="prop-nam"><code> <a href="/additionalProperty" class="core" title="additionalProperty">additionalProperty</a></code></th> <td class="prop-ect"> <a href="/PropertyValue" class="core" title="PropertyValue">PropertyValue</a></td> <td class="prop-desc">A property-value pair representing an additional characteristic of the entity, e.g. a product feature or another characteristic for which there is no matching property in schema.org.<br/><br/> Note: Publishers should be aware that applications designed to use specific schema.org properties (e.g. https://schema.org/width, https://schema.org/color, https://schema.org/gtin13, ...) will typically expect such data to be provided using those properties, rather than using the generic property/value mechanism. </td> </tr> <tr><th class="prop-nam"><code> <a href="/maxValue" class="core" title="maxValue">maxValue</a></code></th> <td class="prop-ect"> <a href="/Number" class="core" title="Number">Number</a></td> <td class="prop-desc">The upper value of some characteristic or property. </td> </tr> <tr><th class="prop-nam"><code> <a href="/minValue" class="core" title="minValue">minValue</a></code></th> <td class="prop-ect"> <a href="/Number" class="core" title="Number">Number</a></td> <td class="prop-desc">The lower value of some characteristic or property. </td> </tr> <tr><th class="prop-nam"><code> <a href="/unitCode" class="core" title="unitCode">unitCode</a></code></th> <td class="prop-ect"> <a href="/Text" class="core" title="Text">Text</a> or <br/> <a href="/URL" class="core" title="URL">URL</a></td> <td class="prop-desc">The unit of measurement given using the UN/CEFACT Common Code (3 characters) or a URL. Other codes than the UN/CEFACT Common Code may be used with a prefix followed by a colon. </td> </tr> <tr><th class="prop-nam"><code> <a href="/unitText" class="core" title="unitText">unitText</a></code></th> <td class="prop-ect"> <a href="/Text" class="core" title="Text">Text</a></td> <td class="prop-desc">A string or text indicating the unit of measurement. Useful if you cannot provide a standard unit code for <a href='unitCode'>unitCode</a>. </td> </tr> <tr><th class="prop-nam"><code> <a href="/value" class="core" title="value">value</a></code></th> <td class="prop-ect"> <a href="/Boolean" class="core" title="Boolean">Boolean</a> or <br/> <a href="/Number" class="core" title="Number">Number</a> or <br/> <a href="/StructuredValue" class="core" title="StructuredValue">StructuredValue</a> or <br/> <a href="/Text" class="core" title="Text">Text</a></td> <td class="prop-desc">The value of a <a class="localLink" href="/QuantitativeValue">QuantitativeValue</a> (including <a class="localLink" href="/Observation">Observation</a>) or property value node.<br/><br/> <ul> <li>For <a class="localLink" href="/QuantitativeValue">QuantitativeValue</a> and <a class="localLink" href="/MonetaryAmount">MonetaryAmount</a>, the recommended type for values is 'Number'.</li> <li>For <a class="localLink" href="/PropertyValue">PropertyValue</a>, it can be 'Text', 'Number', 'Boolean', or 'StructuredValue'.</li> <li>Use values from 0123456789 (Unicode 'DIGIT ZERO' (U+0030) to 'DIGIT NINE' (U+0039)) rather than superficially similar Unicode symbols.</li> <li>Use '.' (Unicode 'FULL STOP' (U+002E)) rather than ',' to indicate a decimal point. Avoid using these symbols as a readability separator.</li> </ul> </td> </tr> <tr><th class="prop-nam"><code> <a href="/valueReference" class="core" title="valueReference">valueReference</a></code></th> <td class="prop-ect"> <a href="/DefinedTerm" class="core" title="DefinedTerm">DefinedTerm</a> or <br/> <a href="/Enumeration" class="core" title="Enumeration">Enumeration</a> or <br/> <a href="/MeasurementTypeEnumeration" class="core" title="MeasurementTypeEnumeration">MeasurementTypeEnumeration</a> or <br/> <a href="/PropertyValue" class="core" title="PropertyValue">PropertyValue</a> or <br/> <a href="/QualitativeValue" class="core" title="QualitativeValue">QualitativeValue</a> or <br/> <a href="/QuantitativeValue" class="core" title="QuantitativeValue">QuantitativeValue</a> or <br/> <a href="/StructuredValue" class="core" title="StructuredValue">StructuredValue</a> or <br/> <a href="/Text" class="core" title="Text">Text</a></td> <td class="prop-desc">A secondary value that provides additional information on the original value, e.g. a reference temperature or a type of measurement. </td> </tr> <!-- Properties for Term: StructuredValue--> <!-- Properties for Term: Intangible--> <!-- Properties for Term: Thing--> <tr class="supertype"><th class="supertype-name" colspan="3">Properties from <a href="/Thing" class="core" title="Thing">Thing</a></th></tr> <tr><th class="prop-nam"><code> <a href="/additionalType" class="core" title="additionalType">additionalType</a></code></th> <td class="prop-ect"> <a href="/Text" class="core" title="Text">Text</a> or <br/> <a href="/URL" class="core" title="URL">URL</a></td> <td class="prop-desc">An additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax. This is a relationship between something and a class that the thing is in. Typically the value is a URI-identified RDF class, and in this case corresponds to the use of rdf:type in RDF. Text values can be used sparingly, for cases where useful information can be added without their being an appropriate schema to reference. In the case of text values, the class label should follow the schema.org <a href="https://schema.org/docs/styleguide.html">style guide</a>. </td> </tr> <tr><th class="prop-nam"><code> <a href="/alternateName" class="core" title="alternateName">alternateName</a></code></th> <td class="prop-ect"> <a href="/Text" class="core" title="Text">Text</a></td> <td class="prop-desc">An alias for the item. </td> </tr> <tr><th class="prop-nam"><code> <a href="/description" class="core" title="description">description</a></code></th> <td class="prop-ect"> <a href="/Text" class="core" title="Text">Text</a> or <br/> <a href="/TextObject" class="core" title="TextObject">TextObject</a></td> <td class="prop-desc">A description of the item. </td> </tr> <tr><th class="prop-nam"><code> <a href="/disambiguatingDescription" class="core" title="disambiguatingDescription">disambiguatingDescription</a></code></th> <td class="prop-ect"> <a href="/Text" class="core" title="Text">Text</a></td> <td class="prop-desc">A sub property of description. A short description of the item used to disambiguate from other, similar items. Information from other properties (in particular, name) may be necessary for the description to be useful for disambiguation. </td> </tr> <tr><th class="prop-nam"><code> <a href="/identifier" class="core" title="identifier">identifier</a></code></th> <td class="prop-ect"> <a href="/PropertyValue" class="core" title="PropertyValue">PropertyValue</a> or <br/> <a href="/Text" class="core" title="Text">Text</a> or <br/> <a href="/URL" class="core" title="URL">URL</a></td> <td class="prop-desc">The identifier property represents any kind of identifier for any kind of <a class="localLink" href="/Thing">Thing</a>, such as ISBNs, GTIN codes, UUIDs etc. Schema.org provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links. See <a href="/docs/datamodel.html#identifierBg">background notes</a> for more details. </td> </tr> <tr><th class="prop-nam"><code> <a href="/image" class="core" title="image">image</a></code></th> <td class="prop-ect"> <a href="/ImageObject" class="core" title="ImageObject">ImageObject</a> or <br/> <a href="/URL" class="core" title="URL">URL</a></td> <td class="prop-desc">An image of the item. This can be a <a class="localLink" href="/URL">URL</a> or a fully described <a class="localLink" href="/ImageObject">ImageObject</a>. </td> </tr> <tr><th class="prop-nam"><code> <a href="/mainEntityOfPage" class="core" title="mainEntityOfPage">mainEntityOfPage</a></code></th> <td class="prop-ect"> <a href="/CreativeWork" class="core" title="CreativeWork">CreativeWork</a> or <br/> <a href="/URL" class="core" title="URL">URL</a></td> <td class="prop-desc">Indicates a page (or other CreativeWork) for which this thing is the main entity being described. See <a href="/docs/datamodel.html#mainEntityBackground">background notes</a> for details. <br/>Inverse property: <a href="/mainEntity" class="core" title="mainEntity">mainEntity</a> </td> </tr> <tr><th class="prop-nam"><code> <a href="/name" class="core" title="name">name</a></code></th> <td class="prop-ect"> <a href="/Text" class="core" title="Text">Text</a></td> <td class="prop-desc">The name of the item. </td> </tr> <tr><th class="prop-nam"><code> <a href="/potentialAction" class="core" title="potentialAction">potentialAction</a></code></th> <td class="prop-ect"> <a href="/Action" class="core" title="Action">Action</a></td> <td class="prop-desc">Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role. </td> </tr> <tr><th class="prop-nam"><code> <a href="/sameAs" class="core" title="sameAs">sameAs</a></code></th> <td class="prop-ect"> <a href="/URL" class="core" title="URL">URL</a></td> <td class="prop-desc">URL of a reference Web page that unambiguously indicates the item's identity. E.g. the URL of the item's Wikipedia page, Wikidata entry, or official website. </td> </tr> <tr><th class="prop-nam"><code> <a href="/subjectOf" class="core" title="subjectOf">subjectOf</a></code></th> <td class="prop-ect"> <a href="/CreativeWork" class="core" title="CreativeWork">CreativeWork</a> or <br/> <a href="/Event" class="core" title="Event">Event</a></td> <td class="prop-desc">A CreativeWork or Event about this Thing. <br/>Inverse property: <a href="/about" class="core" title="about">about</a> </td> </tr> <tr><th class="prop-nam"><code> <a href="/url" class="core" title="url">url</a></code></th> <td class="prop-ect"> <a href="/URL" class="core" title="URL">URL</a></td> <td class="prop-desc">URL of the item. </td> </tr> </table> <!-- List properties that have this term as an Expected type --> <br/><div id="incoming">Instances of <a href="/Observation" class="core" title="Observation">Observation</a> may appear as a value for the following properties</div> <table class="definition-table"> <thead><tr><th>Property</th><th>On Types</th><th>Description</th></tr></thead> <tr><th class="prop-nam"> <a href="/diseaseSpreadStatistics" class="core" title="diseaseSpreadStatistics">diseaseSpreadStatistics</a></th> <td class="prop-ect"> <a href="/SpecialAnnouncement" class="ext ext-pending" title="SpecialAnnouncement">SpecialAnnouncement</a></td> <td class="prop-desc">Statistical information about the spread of a disease, either as <a class="localLink" href="/WebContent">WebContent</a>, or described directly as a <a class="localLink" href="/Dataset">Dataset</a>, or the specific <a class="localLink" href="/Observation">Observation</a>s in the dataset. When a <a class="localLink" href="/WebContent">WebContent</a> URL is provided, the page indicated might also contain more such markup. </tr> </table> <!-- List subtypes/subproperties --> <!-- List subs (Subtypes/subproperties/enumeration members/etc.) for Term --> <!-- list supersedes and superseded references --> <!-- list source references and acknowledgements --> <h4 id="source" class="jumptarget" title="Source">Source</h4> <p><a href="https://github.com/schemaorg/schemaorg/issues/2291">https://github.com/schemaorg/schemaorg/issues/2291</a></p> <br/> <!-- list examples --> <!-- Examples block for term: Observation--> <div id="examplespannel" class="jumptarget" title="Examples"> <h3>Examples</h3> <div class="example-head"> <button class="clip clipbutton eg-0480" data-clipboard-target=".ds-tab.selected.eg-0480 .clipsource" title="Copy example to clipboard"> <img src="/docs/clipboard/clippy.svg" width="18" alt="Copy to clipboard" /> </button> <a id="eg-0480" title="Link: #eg-0480" href="#eg-0480" class="clickableAnchor" >Example 1</a> <div class="tooltip"> <span class="tooltiptext eg-0480">Copied</span> </div> </div> <div class='ds-selector-tabs ds-selector'> <div class='selectors'> <a data-selects='original_html' class='selected'>No Markup</a> <a data-selects='jsonld' class=''>JSON-LD</a> <a data-selects='structure' class='extabs'>Structure</a> </div> <div class="ds-tab eg-0480 original_html selected"> <div class="ds-tab-note" >Example notes or example HTML without markup.</div> <pre class="ds-tab-content prettyprint lang-html linenums clipsource "> As an example, the statement "According to the US Census ACS 5 Year Estimates, the median age of women in San Antonio, Texas in 2014 was 34.4 years." can be represented in JSON-LD. </pre> </div> <div class="ds-tab eg-0480 jsonld "> <div class="ds-tab-note" >Example encoded as <a class="ds-tab-note" href="https://en.wikipedia.org/wiki/JSON-LD">JSON-LD</a> in a HTML script tag.</div> <pre class="ds-tab-content prettyprint lang-html linenums clipsource "> <script type="application/ld+json"> [ { "@context": "https://schema.org/", "@type": "StatisticalVariable", "@id": "Median_Height_Person_Female", "name": "Median height of women", "populationType": {"@id": "Person"}, "measuredProperty": {"@id": "height"}, "statType": {"@id": "median"}, "gender": {"@id": "Female"}, "numConstraints": 1, "constrainingProperty": {"@id": "gender"} }, { "@context": "https://schema.org/", "@id": "Observation_Median_Age_Person_Female_SanAntonio_TX_2014", "@type": "Observation", "name": "Median height of women in San Antonio, Texas in 2014", "description": "An Observation of the StatisticalVariable Median_Height_Person_Female in location: San Antonio, Texas, for time period: 2014", "variableMeasured": { "@id": "Median_Height_Person_Female" }, "observationAbout": { "@id": "https://www.wikidata.org/entity/Q975" }, "observationDate": 2014, "value": 160, "unitCode": "CMT" } ] </script> </pre> </div> <div class="ds-tab eg-0480 structure extabs" data-ex="eg-0480"> <div class="ds-tab-note" >Structured representation of the JSON-LD example.</div> <div class="ds-tab-content structureout extabs eg-0480" style="margin-left: 5px;"> </div> <div class="structuretext clipsource extabs eg-0480"></div> </div> <div class="payload eg-0480" style="display: none;">[ { "@context": "https://schema.org/", "@type": "StatisticalVariable", "@id": "Median_Height_Person_Female", "name": "Median height of women", "populationType": {"@id": "Person"}, "measuredProperty": {"@id": "height"}, "statType": {"@id": "median"}, "gender": {"@id": "Female"}, "numConstraints": 1, "constrainingProperty": {"@id": "gender"} }, { "@context": "https://schema.org/", "@id": "Observation_Median_Age_Person_Female_SanAntonio_TX_2014", "@type": "Observation", "name": "Median height of women in San Antonio, Texas in 2014", "description": "An Observation of the StatisticalVariable Median_Height_Person_Female in location: San Antonio, Texas, for time period: 2014", "variableMeasured": { "@id": "Median_Height_Person_Female" }, "observationAbout": { "@id": "https://www.wikidata.org/entity/Q975" }, "observationDate": 2014, "value": 160, "unitCode": "CMT" } ]</div> </div> </div> </div> <!-- mainContent --> <!-- Footer start from PageFooter.j2 --> <div id="footer"> <p><a href="/docs/terms.html">Terms and conditions</a></p> <div id="versioninfo"> <span class="sep">•</span> Schema.org <span class="sep">•</span> V28.1 <span class="sep">|</span> 2024-11-22 </div> </div> <script> (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) })(window,document,'script','//www.google-analytics.com/analytics.js','ga'); ga('create', 'UA-52672119-1', 'auto'); ga('send', 'pageview'); </script> <!-- Footer end from PageFooter.j2 --> <script type="application/ld+json"> { "@context": { "brick": "https://brickschema.org/schema/Brick#", "csvw": "http://www.w3.org/ns/csvw#", "dc": "http://purl.org/dc/elements/1.1/", "dcam": "http://purl.org/dc/dcam/", "dcat": "http://www.w3.org/ns/dcat#", "dcmitype": "http://purl.org/dc/dcmitype/", "dcterms": "http://purl.org/dc/terms/", "doap": "http://usefulinc.com/ns/doap#", "foaf": "http://xmlns.com/foaf/0.1/", "odrl": "http://www.w3.org/ns/odrl/2/", "org": "http://www.w3.org/ns/org#", "owl": "http://www.w3.org/2002/07/owl#", "prof": "http://www.w3.org/ns/dx/prof/", "prov": "http://www.w3.org/ns/prov#", "qb": "http://purl.org/linked-data/cube#", "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#", "rdfs": "http://www.w3.org/2000/01/rdf-schema#", "schema": "https://schema.org/", "sh": "http://www.w3.org/ns/shacl#", "skos": "http://www.w3.org/2004/02/skos/core#", "sosa": "http://www.w3.org/ns/sosa/", "ssn": "http://www.w3.org/ns/ssn/", "time": "http://www.w3.org/2006/time#", "vann": "http://purl.org/vocab/vann/", "void": "http://rdfs.org/ns/void#", "xsd": "http://www.w3.org/2001/XMLSchema#" }, "@graph": [ { "@id": "schema:measurementQualifier", "@type": "rdf:Property", "rdfs:comment": "Provides additional qualification to an observation. For example, a GDP observation measures the Nominal value.", "rdfs:label": "measurementQualifier", "schema:domainIncludes": [ { "@id": "schema:Observation" }, { "@id": "schema:StatisticalVariable" } ], "schema:isPartOf": { "@id": "https://pending.schema.org" }, "schema:rangeIncludes": { "@id": "schema:Enumeration" }, "schema:source": { "@id": "https://github.com/schemaorg/schemaorg/issues/2564" } }, { "@id": "schema:observationAbout", "@type": "rdf:Property", "rdfs:comment": "The [[observationAbout]] property identifies an entity, often a [[Place]], associated with an [[Observation]].", "rdfs:label": "observationAbout", "schema:domainIncludes": { "@id": "schema:Observation" }, "schema:isPartOf": { "@id": "https://pending.schema.org" }, "schema:rangeIncludes": [ { "@id": "schema:Thing" }, { "@id": "schema:Place" } ], "schema:source": { "@id": "https://github.com/schemaorg/schemaorg/issues/2291" } }, { "@id": "schema:minValue", "@type": "rdf:Property", "rdfs:comment": "The lower value of some characteristic or property.", "rdfs:label": "minValue", "schema:contributor": { "@id": "https://schema.org/docs/collab/GoodRelationsTerms" }, "schema:domainIncludes": [ { "@id": "schema:MonetaryAmount" }, { "@id": "schema:PropertyValue" }, { "@id": "schema:QuantitativeValue" }, { "@id": "schema:PropertyValueSpecification" } ], "schema:rangeIncludes": { "@id": "schema:Number" } }, { "@id": "schema:potentialAction", "@type": "rdf:Property", "rdfs:comment": "Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.", "rdfs:label": "potentialAction", "schema:domainIncludes": { "@id": "schema:Thing" }, "schema:rangeIncludes": { "@id": "schema:Action" } }, { "@id": "schema:observationDate", "@type": "rdf:Property", "rdfs:comment": "The observationDate of an [[Observation]].", "rdfs:label": "observationDate", "schema:domainIncludes": { "@id": "schema:Observation" }, "schema:isPartOf": { "@id": "https://pending.schema.org" }, "schema:rangeIncludes": { "@id": "schema:DateTime" }, "schema:source": { "@id": "https://github.com/schemaorg/schemaorg/issues/2291" } }, { "@id": "schema:measuredProperty", "@type": "rdf:Property", "rdfs:comment": "The measuredProperty of an [[Observation]], typically via its [[StatisticalVariable]]. There are various kinds of applicable [[Property]]: a schema.org property, a property from other RDF-compatible systems, e.g. W3C RDF Data Cube, Data Commons, Wikidata, or schema.org extensions such as [GS1's](https://www.gs1.org/voc/?show=properties).", "rdfs:label": "measuredProperty", "schema:domainIncludes": [ { "@id": "schema:Observation" }, { "@id": "schema:StatisticalVariable" } ], "schema:isPartOf": { "@id": "https://pending.schema.org" }, "schema:rangeIncludes": { "@id": "schema:Property" }, "schema:source": { "@id": "https://github.com/schemaorg/schemaorg/issues/2291" } }, { "@id": "schema:mainEntityOfPage", "@type": "rdf:Property", "rdfs:comment": "Indicates a page (or other CreativeWork) for which this thing is the main entity being described. See [background notes](/docs/datamodel.html#mainEntityBackground) for details.", "rdfs:label": "mainEntityOfPage", "schema:domainIncludes": { "@id": "schema:Thing" }, "schema:inverseOf": { "@id": "schema:mainEntity" }, "schema:rangeIncludes": [ { "@id": "schema:CreativeWork" }, { "@id": "schema:URL" } ] }, { "@id": "schema:value", "@type": "rdf:Property", "rdfs:comment": "The value of a [[QuantitativeValue]] (including [[Observation]]) or property value node.\\n\\n* For [[QuantitativeValue]] and [[MonetaryAmount]], the recommended type for values is 'Number'.\\n* For [[PropertyValue]], it can be 'Text', 'Number', 'Boolean', or 'StructuredValue'.\\n* Use values from 0123456789 (Unicode 'DIGIT ZERO' (U+0030) to 'DIGIT NINE' (U+0039)) rather than superficially similar Unicode symbols.\\n* Use '.' (Unicode 'FULL STOP' (U+002E)) rather than ',' to indicate a decimal point. Avoid using these symbols as a readability separator.", "rdfs:label": "value", "schema:contributor": { "@id": "https://schema.org/docs/collab/GoodRelationsTerms" }, "schema:domainIncludes": [ { "@id": "schema:MonetaryAmount" }, { "@id": "schema:PropertyValue" }, { "@id": "schema:QuantitativeValue" } ], "schema:rangeIncludes": [ { "@id": "schema:Number" }, { "@id": "schema:Text" }, { "@id": "schema:Boolean" }, { "@id": "schema:StructuredValue" } ] }, { "@id": "schema:image", "@type": "rdf:Property", "rdfs:comment": "An image of the item. This can be a [[URL]] or a fully described [[ImageObject]].", "rdfs:label": "image", "schema:domainIncludes": { "@id": "schema:Thing" }, "schema:rangeIncludes": [ { "@id": "schema:ImageObject" }, { "@id": "schema:URL" } ] }, { "@id": "schema:Intangible", "@type": "rdfs:Class", "rdfs:comment": "A utility class that serves as the umbrella for a number of 'intangible' things such as quantities, structured values, etc.", "rdfs:label": "Intangible", "rdfs:subClassOf": { "@id": "schema:Thing" } }, { "@id": "schema:measurementDenominator", "@type": "rdf:Property", "rdfs:comment": "Identifies the denominator variable when an observation represents a ratio or percentage.", "rdfs:label": "measurementDenominator", "schema:domainIncludes": [ { "@id": "schema:StatisticalVariable" }, { "@id": "schema:Observation" } ], "schema:isPartOf": { "@id": "https://pending.schema.org" }, "schema:rangeIncludes": { "@id": "schema:StatisticalVariable" }, "schema:source": { "@id": "https://github.com/schemaorg/schemaorg/issues/2564" } }, { "@id": "schema:disambiguatingDescription", "@type": "rdf:Property", "rdfs:comment": "A sub property of description. A short description of the item used to disambiguate from other, similar items. Information from other properties (in particular, name) may be necessary for the description to be useful for disambiguation.", "rdfs:label": "disambiguatingDescription", "rdfs:subPropertyOf": { "@id": "schema:description" }, "schema:domainIncludes": { "@id": "schema:Thing" }, "schema:rangeIncludes": { "@id": "schema:Text" } }, { "@id": "schema:url", "@type": "rdf:Property", "rdfs:comment": "URL of the item.", "rdfs:label": "url", "schema:domainIncludes": { "@id": "schema:Thing" }, "schema:rangeIncludes": { "@id": "schema:URL" } }, { "@id": "schema:Thing", "@type": "rdfs:Class", "rdfs:comment": "The most generic type of item.", "rdfs:label": "Thing" }, { "@id": "schema:additionalType", "@type": "rdf:Property", "rdfs:comment": "An additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax. This is a relationship between something and a class that the thing is in. Typically the value is a URI-identified RDF class, and in this case corresponds to the\n use of rdf:type in RDF. Text values can be used sparingly, for cases where useful information can be added without their being an appropriate schema to reference. In the case of text values, the class label should follow the schema.org <a href=\"https://schema.org/docs/styleguide.html\">style guide</a>.", "rdfs:label": "additionalType", "rdfs:subPropertyOf": { "@id": "rdf:type" }, "schema:domainIncludes": { "@id": "schema:Thing" }, "schema:rangeIncludes": [ { "@id": "schema:Text" }, { "@id": "schema:URL" } ] }, { "@id": "schema:marginOfError", "@type": "rdf:Property", "rdfs:comment": "A [[marginOfError]] for an [[Observation]].", "rdfs:label": "marginOfError", "schema:domainIncludes": { "@id": "schema:Observation" }, "schema:isPartOf": { "@id": "https://pending.schema.org" }, "schema:rangeIncludes": { "@id": "schema:QuantitativeValue" }, "schema:source": { "@id": "https://github.com/schemaorg/schemaorg/issues/2291" } }, { "@id": "schema:additionalProperty", "@type": "rdf:Property", "rdfs:comment": "A property-value pair representing an additional characteristic of the entity, e.g. a product feature or another characteristic for which there is no matching property in schema.org.\\n\\nNote: Publishers should be aware that applications designed to use specific schema.org properties (e.g. https://schema.org/width, https://schema.org/color, https://schema.org/gtin13, ...) will typically expect such data to be provided using those properties, rather than using the generic property/value mechanism.\n", "rdfs:label": "additionalProperty", "schema:domainIncludes": [ { "@id": "schema:QuantitativeValue" }, { "@id": "schema:Place" }, { "@id": "schema:MerchantReturnPolicy" }, { "@id": "schema:QualitativeValue" }, { "@id": "schema:Offer" }, { "@id": "schema:Product" } ], "schema:rangeIncludes": { "@id": "schema:PropertyValue" } }, { "@id": "schema:maxValue", "@type": "rdf:Property", "rdfs:comment": "The upper value of some characteristic or property.", "rdfs:label": "maxValue", "schema:contributor": { "@id": "https://schema.org/docs/collab/GoodRelationsTerms" }, "schema:domainIncludes": [ { "@id": "schema:MonetaryAmount" }, { "@id": "schema:PropertyValue" }, { "@id": "schema:QuantitativeValue" }, { "@id": "schema:PropertyValueSpecification" } ], "schema:rangeIncludes": { "@id": "schema:Number" } }, { "@id": "schema:sameAs", "@type": "rdf:Property", "rdfs:comment": "URL of a reference Web page that unambiguously indicates the item's identity. E.g. the URL of the item's Wikipedia page, Wikidata entry, or official website.", "rdfs:label": "sameAs", "schema:domainIncludes": { "@id": "schema:Thing" }, "schema:rangeIncludes": { "@id": "schema:URL" } }, { "@id": "schema:variableMeasured", "@type": "rdf:Property", "rdfs:comment": "The variableMeasured property can indicate (repeated as necessary) the variables that are measured in some dataset, either described as text or as pairs of identifier and description using PropertyValue, or more explicitly as a [[StatisticalVariable]].", "rdfs:label": "variableMeasured", "schema:domainIncludes": [ { "@id": "schema:Observation" }, { "@id": "schema:Dataset" } ], "schema:isPartOf": { "@id": "https://pending.schema.org" }, "schema:rangeIncludes": [ { "@id": "schema:Property" }, { "@id": "schema:Text" }, { "@id": "schema:StatisticalVariable" }, { "@id": "schema:PropertyValue" } ], "schema:source": { "@id": "https://github.com/schemaorg/schemaorg/issues/1083" } }, { "@id": "schema:alternateName", "@type": "rdf:Property", "rdfs:comment": "An alias for the item.", "rdfs:label": "alternateName", "schema:domainIncludes": { "@id": "schema:Thing" }, "schema:rangeIncludes": { "@id": "schema:Text" } }, { "@id": "schema:measurementMethod", "@type": "rdf:Property", "rdfs:comment": "A subproperty of [[measurementTechnique]] that can be used for specifying specific methods, in particular via [[MeasurementMethodEnum]].", "rdfs:label": "measurementMethod", "rdfs:subPropertyOf": { "@id": "schema:measurementTechnique" }, "schema:domainIncludes": [ { "@id": "schema:PropertyValue" }, { "@id": "schema:Observation" }, { "@id": "schema:DataCatalog" }, { "@id": "schema:StatisticalVariable" }, { "@id": "schema:Dataset" }, { "@id": "schema:DataDownload" } ], "schema:isPartOf": { "@id": "https://pending.schema.org" }, "schema:rangeIncludes": [ { "@id": "schema:MeasurementMethodEnum" }, { "@id": "schema:Text" }, { "@id": "schema:URL" }, { "@id": "schema:DefinedTerm" } ], "schema:source": { "@id": "https://github.com/schemaorg/schemaorg/issues/1425" } }, { "@id": "schema:Observation", "@type": "rdfs:Class", "rdfs:comment": "Instances of the class [[Observation]] are used to specify observations about an entity at a particular time. The principal properties of an [[Observation]] are [[observationAbout]], [[measuredProperty]], [[statType]], [[value] and [[observationDate]] and [[measuredProperty]]. Some but not all Observations represent a [[QuantitativeValue]]. Quantitative observations can be about a [[StatisticalVariable]], which is an abstract specification about which we can make observations that are grounded at a particular location and time.\n\nObservations can also encode a subset of simple RDF-like statements (its observationAbout, a StatisticalVariable, defining the measuredPoperty; its observationAbout property indicating the entity the statement is about, and [[value]] )\n\nIn the context of a quantitative knowledge graph, typical properties could include [[measuredProperty]], [[observationAbout]], [[observationDate]], [[value]], [[unitCode]], [[unitText]], [[measurementMethod]].\n ", "rdfs:label": "Observation", "rdfs:subClassOf": [ { "@id": "schema:Intangible" }, { "@id": "schema:QuantitativeValue" } ], "schema:isPartOf": { "@id": "https://pending.schema.org" }, "schema:source": { "@id": "https://github.com/schemaorg/schemaorg/issues/2291" } }, { "@id": "schema:observationPeriod", "@type": "rdf:Property", "rdfs:comment": "The length of time an Observation took place over. The format follows `P[0-9]*[Y|M|D|h|m|s]`. For example, P1Y is Period 1 Year, P3M is Period 3 Months, P3h is Period 3 hours.", "rdfs:label": "observationPeriod", "schema:domainIncludes": { "@id": "schema:Observation" }, "schema:isPartOf": { "@id": "https://pending.schema.org" }, "schema:rangeIncludes": { "@id": "schema:Text" }, "schema:source": { "@id": "https://github.com/schemaorg/schemaorg/issues/2564" } }, { "@id": "schema:StructuredValue", "@type": "rdfs:Class", "rdfs:comment": "Structured values are used when the value of a property has a more complex structure than simply being a textual value or a reference to another thing.", "rdfs:label": "StructuredValue", "rdfs:subClassOf": { "@id": "schema:Intangible" } }, { "@id": "schema:measurementTechnique", "@type": "rdf:Property", "rdfs:comment": "A technique, method or technology used in an [[Observation]], [[StatisticalVariable]] or [[Dataset]] (or [[DataDownload]], [[DataCatalog]]), corresponding to the method used for measuring the corresponding variable(s) (for datasets, described using [[variableMeasured]]; for [[Observation]], a [[StatisticalVariable]]). Often but not necessarily each [[variableMeasured]] will have an explicit representation as (or mapping to) an property such as those defined in Schema.org, or other RDF vocabularies and \"knowledge graphs\". In that case the subproperty of [[variableMeasured]] called [[measuredProperty]] is applicable.\n \nThe [[measurementTechnique]] property helps when extra clarification is needed about how a [[measuredProperty]] was measured. This is oriented towards scientific and scholarly dataset publication but may have broader applicability; it is not intended as a full representation of measurement, but can often serve as a high level summary for dataset discovery. \n\nFor example, if [[variableMeasured]] is: molecule concentration, [[measurementTechnique]] could be: \"mass spectrometry\" or \"nmr spectroscopy\" or \"colorimetry\" or \"immunofluorescence\". If the [[variableMeasured]] is \"depression rating\", the [[measurementTechnique]] could be \"Zung Scale\" or \"HAM-D\" or \"Beck Depression Inventory\". \n\nIf there are several [[variableMeasured]] properties recorded for some given data object, use a [[PropertyValue]] for each [[variableMeasured]] and attach the corresponding [[measurementTechnique]]. The value can also be from an enumeration, organized as a [[MeasurementMetholdEnumeration]].", "rdfs:label": "measurementTechnique", "schema:domainIncludes": [ { "@id": "schema:PropertyValue" }, { "@id": "schema:Dataset" }, { "@id": "schema:Observation" }, { "@id": "schema:DataCatalog" }, { "@id": "schema:StatisticalVariable" }, { "@id": "schema:DataDownload" } ], "schema:isPartOf": { "@id": "https://pending.schema.org" }, "schema:rangeIncludes": [ { "@id": "schema:URL" }, { "@id": "schema:DefinedTerm" }, { "@id": "schema:Text" }, { "@id": "schema:MeasurementMethodEnum" } ], "schema:source": { "@id": "https://github.com/schemaorg/schemaorg/issues/1425" } }, { "@id": "schema:unitCode", "@type": "rdf:Property", "rdfs:comment": "The unit of measurement given using the UN/CEFACT Common Code (3 characters) or a URL. Other codes than the UN/CEFACT Common Code may be used with a prefix followed by a colon.", "rdfs:label": "unitCode", "schema:contributor": { "@id": "https://schema.org/docs/collab/GoodRelationsTerms" }, "schema:domainIncludes": [ { "@id": "schema:UnitPriceSpecification" }, { "@id": "schema:PropertyValue" }, { "@id": "schema:QuantitativeValue" }, { "@id": "schema:TypeAndQuantityNode" } ], "schema:rangeIncludes": [ { "@id": "schema:Text" }, { "@id": "schema:URL" } ] }, { "@id": "schema:valueReference", "@type": "rdf:Property", "rdfs:comment": "A secondary value that provides additional information on the original value, e.g. a reference temperature or a type of measurement.", "rdfs:label": "valueReference", "schema:contributor": { "@id": "https://schema.org/docs/collab/GoodRelationsTerms" }, "schema:domainIncludes": [ { "@id": "schema:PropertyValue" }, { "@id": "schema:QuantitativeValue" }, { "@id": "schema:QualitativeValue" } ], "schema:rangeIncludes": [ { "@id": "schema:PropertyValue" }, { "@id": "schema:QualitativeValue" }, { "@id": "schema:StructuredValue" }, { "@id": "schema:Enumeration" }, { "@id": "schema:QuantitativeValue" }, { "@id": "schema:MeasurementTypeEnumeration" }, { "@id": "schema:DefinedTerm" }, { "@id": "schema:Text" } ] }, { "@id": "schema:identifier", "@type": "rdf:Property", "owl:equivalentProperty": { "@id": "dcterms:identifier" }, "rdfs:comment": "The identifier property represents any kind of identifier for any kind of [[Thing]], such as ISBNs, GTIN codes, UUIDs etc. Schema.org provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links. See [background notes](/docs/datamodel.html#identifierBg) for more details.\n ", "rdfs:label": "identifier", "schema:domainIncludes": { "@id": "schema:Thing" }, "schema:rangeIncludes": [ { "@id": "schema:URL" }, { "@id": "schema:Text" }, { "@id": "schema:PropertyValue" } ] }, { "@id": "schema:name", "@type": "rdf:Property", "owl:equivalentProperty": { "@id": "dcterms:title" }, "rdfs:comment": "The name of the item.", "rdfs:label": "name", "rdfs:subPropertyOf": { "@id": "rdfs:label" }, "schema:domainIncludes": { "@id": "schema:Thing" }, "schema:rangeIncludes": { "@id": "schema:Text" } }, { "@id": "schema:subjectOf", "@type": "rdf:Property", "rdfs:comment": "A CreativeWork or Event about this Thing.", "rdfs:label": "subjectOf", "schema:domainIncludes": { "@id": "schema:Thing" }, "schema:inverseOf": { "@id": "schema:about" }, "schema:rangeIncludes": [ { "@id": "schema:CreativeWork" }, { "@id": "schema:Event" } ], "schema:source": { "@id": "https://github.com/schemaorg/schemaorg/issues/1670" } }, { "@id": "schema:unitText", "@type": "rdf:Property", "rdfs:comment": "A string or text indicating the unit of measurement. Useful if you cannot provide a standard unit code for\n<a href='unitCode'>unitCode</a>.", "rdfs:label": "unitText", "schema:domainIncludes": [ { "@id": "schema:UnitPriceSpecification" }, { "@id": "schema:PropertyValue" }, { "@id": "schema:QuantitativeValue" }, { "@id": "schema:TypeAndQuantityNode" } ], "schema:rangeIncludes": { "@id": "schema:Text" } }, { "@id": "schema:description", "@type": "rdf:Property", "owl:equivalentProperty": { "@id": "dcterms:description" }, "rdfs:comment": "A description of the item.", "rdfs:label": "description", "schema:domainIncludes": { "@id": "schema:Thing" }, "schema:rangeIncludes": [ { "@id": "schema:Text" }, { "@id": "schema:TextObject" } ] }, { "@id": "schema:QuantitativeValue", "@type": "rdfs:Class", "rdfs:comment": " A point value or interval for product characteristics and other purposes.", "rdfs:label": "QuantitativeValue", "rdfs:subClassOf": { "@id": "schema:StructuredValue" }, "schema:contributor": { "@id": "https://schema.org/docs/collab/GoodRelationsClass" } } ] } </script> </body> </html>