blocks|key|2089090|text|您链接到的演示程序中的错误消息实际上描述了确切的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2089091|错误验证http://www.epri.com/studies/3002011786studyVariable为{“类型”：“NodeConstraint”，“数据类型”：“http://www.epri.com/studies/3002011786studyVariable”}：不匹配的数据类型：http://www.epri.com/studies/3002011786studyVariable不是带有数据类型http://www.epri.com/studies/3002011786studyVariable的文字|blockquote|offset|length|2089092|您使用的是数据类型约束，这不是您想要的。|2089093|您需要使用a+[+st:studyVariable+]，因为您希望指定一个值集|style|CODE|2089094|epri:VariableShape+{
++a+[+st:studyVariable+];
++st:subject+[tax:~]+;
++st:signal+xsd:decimal
}|code-block|syntax|javascript|2089095|entityMap|0|LINK|mutability|MUTABLE|url|http://www.epri.com/studies/3002011786studyVariable|1|2|3|4|http://shexspec.github.io/primer/#vocab-literal-datatype|5|http://shexspec.github.io/primer/#value-sets^0|0|4|1F|0|2F|1F|1|46|1F|2|5T|1F|3|0|5|6|4|0|5|M|11|2|5|0|0^^$0|@$1|2|3|4|5|6|7|16|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|17|8|@]|9|@$E|18|F|19|1|1A]|$E|1B|F|1C|1|1D]|$E|1E|F|1F|1|1G]|$E|1H|F|1I|1|1J]]|A|$]]|$1|G|3|H|5|6|7|1K|8|@]|9|@$E|1L|F|1M|1|1N]]|A|$]]|$1|I|3|J|5|6|7|1O|8|@$E|1P|F|1Q|K|L]]|9|@$E|1R|F|1S|1|1T]]|A|$]]|$1|M|3|N|5|O|7|1U|8|@]|9|@]|A|$P|Q]]|$1|R|3|-4|5|6|7|1V|8|@]|9|@]|A|$]]]|S|$T|$5|U|V|W|A|$X|Y]]|Z|$5|U|V|W|A|$X|Y]]|10|$5|U|V|W|A|$X|Y]]|11|$5|U|V|W|A|$X|Y]]|12|$5|U|V|W|A|$X|13]]|14|$5|U|V|W|A|$X|15]]]]

The error message from the demo that you linked to actually describes the exact problem.

<blockquote>
 Error validating <a href="http://www.epri.com/studies/3002011786studyVariable" rel="noreferrer">http://www.epri.com/studies/3002011786studyVariable</a> as {"type":"NodeConstraint","datatype":"<a href="http://www.epri.com/studies/3002011786studyVariable" rel="noreferrer">http://www.epri.com/studies/3002011786studyVariable</a>"}: mismatched datatype: <a href="http://www.epri.com/studies/3002011786studyVariable" rel="noreferrer">http://www.epri.com/studies/3002011786studyVariable</a> is not a literal with datatype <a href="http://www.epri.com/studies/3002011786studyVariable" rel="noreferrer">http://www.epri.com/studies/3002011786studyVariable</a>
</blockquote>

You're using a <a href="http://shexspec.github.io/primer/#vocab-literal-datatype" rel="noreferrer">datatype constraint</a>, which isn't what you want. 

You need to use <code>a [ st:studyVariable ]</code>, instead, since you want to specify a <a href="http://shexspec.github.io/primer/#value-sets" rel="noreferrer">value set</a>:

<pre><code>epri:VariableShape {
 a [ st:studyVariable ];
 st:subject [tax:~] ;
 st:signal xsd:decimal
}
</code></pre>

blocks|key|2089130|text|约书亚·泰勒的回答是很重要的，但是，由于这是ShEx中最常见的错误，我想我应该用一些ascii艺术来阐述。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2089131|ShEx数据类型表示为裸虹膜，而值集则用[]s表示。你有一个rdf:type+of+st:studyVariable|style|CODE|2089132|epri:VariableShape+{
++a+st:studyVariable+;+++#+<--+datatype
++st:subject+[tax:~]+;+++#+<--+value+set
++st:signal+xsd:decimal++#+<--+datatype
}|code-block|syntax|javascript|2089133|当您想要一个(小的)+st:studyVariable值集时|2089134|epri:VariableShape+{
++a+[st:studyVariable]+;+#+<--+value+set
++st:subject+[tax:~]+;+++#+<--+value+set
++st:signal+xsd:decimal++#+<--+datatype
}|2089135|(演示)|2089136|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/46879443/8740436|1|http://rawgit.com/shexSpec/shex.js/master/doc/shex-simple.html?schema=PREFIX%2520epri%253A%2520%253Chttp%253A%252F%252Fwww.epri.com%252F%253E%250APREFIX%2520st%253A%2520%253Chttp%253A%252F%252Fwww.epri.com%252Fstudies%252F3002011786%253E%250APREFIX%2520xsd%253A%2520%253Chttp%253A%252F%252Fwww.w3.org%252F2001%252FXMLSchema%2523%253E%250APREFIX%2520tax%253A%2520%253Chttp%253A%252F%252Finfo.identifiers.org%252Ftaxonomy%252F%253E%250A%250Aepri%253AVariableShape%2520%257B%250A%2520%2520a%2520%255Bst%253AstudyVariable%255D%2520%253B%250A%2520%2520st%253Asubject%2520%255Btax%253A~%255D%2520%253B%250A%2520%2520st%253Asignal%2520xsd%253Adecimal%250A%257D&data=PREFIX%2520epri%253A%2520%253Chttp%253A%252F%252Fwww.epri.com%252F%253E%250APREFIX%2520tax%253A%2520%253Chttp%253A%252F%252Finfo.identifiers.org%252Ftaxonomy%252F%253E%250APREFIX%2520st%253A%2520%253Chttp%253A%252F%252Fwww.epri.com%252Fstudies%252F3002011786%253E%250A%250Ast%253AenvFactorEMF%2520a%2520st%253AstudyVariable%2520%253B%250A%2520%2520st%253Asubject%2520tax%253A1758%2520%253B%250A%2520%2520st%253Asignal%2520-.00043%2520.&shape-map=%253Chttp%253A%252F%252Fwww.epri.com%252Fstudies%252F3002011786envFactorEMF%253E%2540epri%253AVariableShape&interface=human%25C2%25AEexpEngine=threaded-val-nerr^0|0|9|0|0|K|3|U|8|16|G|0|0|B|G|0|0|1|2|1|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|D|3|E|5|6|7|16|8|@$A|17|B|18|F|G]|$A|19|B|1A|F|G]|$A|1B|B|1C|F|G]]|9|@]|C|$]]|$1|H|3|I|5|J|7|1D|8|@]|9|@]|C|$K|L]]|$1|M|3|N|5|6|7|1E|8|@$A|1F|B|1G|F|G]]|9|@]|C|$]]|$1|O|3|P|5|J|7|1H|8|@]|9|@]|C|$K|L]]|$1|Q|3|R|5|6|7|1I|8|@]|9|@$A|1J|B|1K|1|1L]]|C|$]]|$1|S|3|-4|5|6|7|1M|8|@]|9|@]|C|$]]]|T|$U|$5|V|W|X|C|$Y|Z]]|10|$5|V|W|X|C|$Y|11]]]]

<a href="https://stackoverflow.com/a/46879443/8740436">Joshua Taylor's answer</a> is spot on but, since this is the most common mistake in ShEx, I thought I'd elaborate with a little ascii art.

ShEx datatypes are expressed as bare IRIs while value sets are expressed in <code>[]s</code>. You had an <code>rdf:type</code> of <code>st:studyVariable</code>:

<pre><code>epri:VariableShape {
 a st:studyVariable ; # &lt;-- datatype
 st:subject [tax:~] ; # &lt;-- value set
 st:signal xsd:decimal # &lt;-- datatype
}
</code></pre>

when you wanted a (small) value set of <code>st:studyVariable</code>:

<pre><code>epri:VariableShape {
 a [st:studyVariable] ; # &lt;-- value set
 st:subject [tax:~] ; # &lt;-- value set
 st:signal xsd:decimal # &lt;-- datatype
}
</code></pre>

(<a href="http://rawgit.com/shexSpec/shex.js/master/doc/shex-simple.html?schema=PREFIX%20epri%3A%20%3Chttp%3A%2F%2Fwww.epri.com%2F%3E%0APREFIX%20st%3A%20%3Chttp%3A%2F%2Fwww.epri.com%2Fstudies%2F3002011786%3E%0APREFIX%20xsd%3A%20%3Chttp%3A%2F%2Fwww.w3.org%2F2001%2FXMLSchema%23%3E%0APREFIX%20tax%3A%20%3Chttp%3A%2F%2Finfo.identifiers.org%2Ftaxonomy%2F%3E%0A%0Aepri%3AVariableShape%20%7B%0A%20%20a%20%5Bst%3AstudyVariable%5D%20%3B%0A%20%20st%3Asubject%20%5Btax%3A~%5D%20%3B%0A%20%20st%3Asignal%20xsd%3Adecimal%0A%7D&amp;data=PREFIX%20epri%3A%20%3Chttp%3A%2F%2Fwww.epri.com%2F%3E%0APREFIX%20tax%3A%20%3Chttp%3A%2F%2Finfo.identifiers.org%2Ftaxonomy%2F%3E%0APREFIX%20st%3A%20%3Chttp%3A%2F%2Fwww.epri.com%2Fstudies%2F3002011786%3E%0A%0Ast%3AenvFactorEMF%20a%20st%3AstudyVariable%20%3B%0A%20%20st%3Asubject%20tax%3A1758%20%3B%0A%20%20st%3Asignal%20-.00043%20.&amp;shape-map=%3Chttp%3A%2F%2Fwww.epri.com%2Fstudies%2F3002011786envFactorEMF%3E%40epri%3AVariableShape&amp;interface=human&amp;regexpEngine=threaded-val-nerr" rel="nofollow noreferrer">demo</a>)

I have a ShEx schema expecting a specific type:

<pre><code>epri:VariableShape {
 a st:studyVariable ;
 st:subject [tax:~] ;
 st:signal xsd:decimal
}
</code></pre>

which rejects data with that type

<pre><code>st:envFactorEMF a st:studyVariable ; # &lt;&lt; this isn't recognized
 st:subject tax:1758 ;
 st:signal -.00043 .
</code></pre>

(<a href="http://rawgit.com/shexSpec/shex.js/master/doc/shex-simple.html?schema=PREFIX%20epri%3A%20%3Chttp%3A%2F%2Fwww.epri.com%2F%3E%0APREFIX%20st%3A%20%3Chttp%3A%2F%2Fwww.epri.com%2Fstudies%2F3002011786%3E%0APREFIX%20xsd%3A%20%3Chttp%3A%2F%2Fwww.w3.org%2F2001%2FXMLSchema%23%3E%0APREFIX%20tax%3A%20%3Chttp%3A%2F%2Finfo.identifiers.org%2Ftaxonomy%2F%3E%0A%0Aepri%3AVariableShape%20%7B%0A%20%20a%20st%3AstudyVariable%20%3B%0A%20%20st%3Asubject%20%5Btax%3A~%5D%20%3B%0A%20%20st%3Asignal%20xsd%3Adecimal%0A%7D&amp;data=PREFIX%20epri%3A%20%3Chttp%3A%2F%2Fwww.epri.com%2F%3E%0APREFIX%20tax%3A%20%3Chttp%3A%2F%2Finfo.identifiers.org%2Ftaxonomy%2F%3E%0APREFIX%20st%3A%20%3Chttp%3A%2F%2Fwww.epri.com%2Fstudies%2F3002011786%3E%0A%0Ast%3AenvFactorEMF%20a%20st%3AstudyVariable%20%3B%0A%20%20st%3Asubject%20tax%3A1758%20%3B%0A%20%20st%3Asignal%20-.00043%20.&amp;shape-map=%3Chttp%3A%2F%2Fwww.epri.com%2Fstudies%2F3002011786envFactorEMF%3E%40epri%3AVariableShape&amp;interface=human&amp;regexpEngine=threaded-val-nerr" rel="nofollow noreferrer">demo</a>) Why would that be?

Why isn't a ShEx constant matching the same term in the data?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个期望特定类型的ShEx模式：epri:VariableShape { a st:studyVariable ; st:subject [tax:~] ; st:signal xsd:decimal}它拒绝使用该类型的数据。st:envFactorEMF a st:studyVariable ; # << this isn't recognized st:subject tax:17

问为什么ShEx常量与数据中的相同项不匹配？
EN

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问为什么ShEx常量与数据中的相同项不匹配？EN

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问为什么ShEx常量与数据中的相同项不匹配？
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