OpenCalais 在 .NET 中解析 RDF

Question

有没有办法在.NET 中解析 OpenCalais RDF，因为我正在使用 dotnetRDF，但它一直给我错误。生成的 Rdf 示例可以在 http://viewer.opencalais.com/ 中找到，我'老实说，我真的很失落，非常感谢任何帮助！如果您使用任何其他 api 或知道如何使其与 dotnetRDF 一起使用，请提供帮助，因为我真的真的迷失了

Erika

<!--Use of the Calais Web Service is governed by the Terms of Service located at http://www.opencalais.com. By using this service or the results of the service you agree to these terms of service.--><!--Relations: PersonEmailAddress

EmailAddress: [email protected], [email protected]
Person: Jack Bauer, Rose Goodings--><rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:c="http://s.opencalais.com/1/pred/"><rdf:Description c:allowDistribution="true" c:allowSearch="true" c:calaisRequestID="5e2f7759-55cb-ac2f-1281-b19ee8118cd9" c:externalID="calaisbridge" c:id="http://id.opencalais.com/KQGwCnWZBLPTHadX7uDMfA" rdf:about="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902"><rdf:type rdf:resource="http://s.opencalais.com/1/type/sys/DocInfo"/><c:document><![CDATA[Jack Bauer <[email protected]>
Rose Goodings <[email protected]>]]></c:document><c:docTitle/><c:docDate>2010-04-20 07:03:23.998</c:docDate><c:externalMetadata c:caller="calaisbridge"/><c:submitter>calaisbridge</c:submitter></rdf:Description><rdf:Description c:contentType="text/raw" c:emVer="7.1.1103.5" c:langIdVer="DefaultLangId" c:language="InputTextTooShort" c:processingVer="CalaisJob01" c:submissionDate="2010-04-20 07:03:23.905" rdf:about="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902/meta"><rdf:type rdf:resource="http://s.opencalais.com/1/type/sys/DocInfoMeta"/><c:docId rdf:resource="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902"/><c:submitterCode>416dcd8a-766f-0aa3-d94c-e5034b6ffc98</c:submitterCode><c:signature>digestalg-1|Kjq/y7thehi10hbBQ5v42YxE8n0=|a2DMjGG4mKEGTlIvvCvOg+BG1sCDrMZFSfRBjOBXMHwGtfLknC1nAQ==</c:signature></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902/lid/DefaultLangId"><rdf:type rdf:resource="http://s.opencalais.com/1/type/lid/DefaultLangId"/><c:docId rdf:resource="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902"/><c:lang rdf:resource="http://d.opencalais.com/lid/DefaultLangId/InputTextTooShort"/></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/pershash-1/a3100b92-7d3d-3f63-afcb-265678c15dcc"><rdf:type rdf:resource="http://s.opencalais.com/1/type/em/e/Person"/><c:name>Jack Bauer</c:name><c:persontype>N/A</c:persontype><c:nationality>N/A</c:nationality><c:commonname>Jack Bauer</c:commonname></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902/Instance/1"><rdf:type rdf:resource="http://s.opencalais.com/1/type/sys/InstanceInfo"/><c:docId rdf:resource="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902"/><c:subject rdf:resource="http://d.opencalais.com/pershash-1/a3100b92-7d3d-3f63-afcb-265678c15dcc"/><!--Person: Jack Bauer; --><c:detection>[]Jack Bauer[ &lt;[email protected]&gt;
Rose Goodings]</c:detection><c:prefix/><c:exact>Jack Bauer</c:exact><c:suffix> &lt;[email protected]&gt;
Rose Goodings</c:suffix><c:offset>0</c:offset><c:length>10</c:length></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902/Relevance/1"><rdf:type rdf:resource="http://s.opencalais.com/1/type/sys/RelevanceInfo"/><c:docId rdf:resource="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902"/><c:subject rdf:resource="http://d.opencalais.com/pershash-1/a3100b92-7d3d-3f63-afcb-265678c15dcc"/><c:relevance>0.643</c:relevance></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/genericHasher-1/b323806b-4832-375a-aec8-56343d47e2d2"><rdf:type rdf:resource="http://s.opencalais.com/1/type/em/e/EmailAddress"/><c:name>[email protected]</c:name></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902/Instance/2"><rdf:type rdf:resource="http://s.opencalais.com/1/type/sys/InstanceInfo"/><c:docId rdf:resource="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902"/><c:subject rdf:resource="http://d.opencalais.com/genericHasher-1/b323806b-4832-375a-aec8-56343d47e2d2"/><!--EmailAddress: [email protected]; --><c:detection>[Bauer &lt;[email protected]&gt;
Rose Goodings &lt;][email protected][&gt;]</c:detection><c:prefix>Bauer &lt;[email protected]&gt;
Rose Goodings &lt;</c:prefix><c:exact>[email protected]</c:exact><c:suffix>&gt;</c:suffix><c:offset>41</c:offset><c:length>19</c:length></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902/Relevance/2"><rdf:type rdf:resource="http://s.opencalais.com/1/type/sys/RelevanceInfo"/><c:docId rdf:resource="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902"/><c:subject rdf:resource="http://d.opencalais.com/genericHasher-1/b323806b-4832-375a-aec8-56343d47e2d2"/><c:relevance>0.643</c:relevance></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/genericHasher-1/addbee66-556c-3a3a-b2d4-4c4c1e668261"><rdf:type rdf:resource="http://s.opencalais.com/1/type/em/r/PersonEmailAddress"/><!--Rose Goodings--><c:person rdf:resource="http://d.opencalais.com/pershash-1/9f7b3610-9b76-34d4-8eea-3c2c0acbb31b"/><[email protected]><c:emailaddress rdf:resource="http://d.opencalais.com/genericHasher-1/b323806b-4832-375a-aec8-56343d47e2d2"/></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902/Instance/3"><rdf:type rdf:resource="http://s.opencalais.com/1/type/sys/InstanceInfo"/><c:docId rdf:resource="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902"/><c:subject rdf:resource="http://d.opencalais.com/genericHasher-1/addbee66-556c-3a3a-b2d4-4c4c1e668261"/><!--PersonEmailAddress: person: Rose Goodings; emailaddress: [email protected]; --><c:detection>[Bauer &lt;[email protected]&gt;
]Rose Goodings &lt;[email protected][&gt;]</c:detection><c:prefix>Bauer &lt;[email protected]&gt;
</c:prefix><c:exact>Rose Goodings &lt;[email protected]</c:exact><c:suffix>&gt;</c:suffix><c:offset>26</c:offset><c:length>34</c:length></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/pershash-1/9f7b3610-9b76-34d4-8eea-3c2c0acbb31b"><rdf:type rdf:resource="http://s.opencalais.com/1/type/em/e/Person"/><c:name>Rose Goodings</c:name><c:persontype>N/A</c:persontype><c:nationality>N/A</c:nationality><c:commonname>Rose Goodings</c:commonname></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902/Instance/4"><rdf:type rdf:resource="http://s.opencalais.com/1/type/sys/InstanceInfo"/><c:docId rdf:resource="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902"/><c:subject rdf:resource="http://d.opencalais.com/pershash-1/9f7b3610-9b76-34d4-8eea-3c2c0acbb31b"/><!--Person: Rose Goodings; --><c:detection>[Bauer &lt;[email protected]&gt;
]Rose Goodings[ &lt;[email protected]&gt;]</c:detection><c:prefix>Bauer &lt;[email protected]&gt;
</c:prefix><c:exact>Rose Goodings</c:exact><c:suffix> &lt;[email protected]&gt;</c:suffix><c:offset>26</c:offset><c:length>13</c:length></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902/Relevance/3"><rdf:type rdf:resource="http://s.opencalais.com/1/type/sys/RelevanceInfo"/><c:docId rdf:resource="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902"/><c:subject rdf:resource="http://d.opencalais.com/pershash-1/9f7b3610-9b76-34d4-8eea-3c2c0acbb31b"/><c:relevance>0.643</c:relevance></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/genericHasher-1/8c80538c-84d5-3394-a452-81a59a5eb11a"><rdf:type rdf:resource="http://s.opencalais.com/1/type/em/e/EmailAddress"/><c:name>[email protected]</c:name></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902/Instance/5"><rdf:type rdf:resource="http://s.opencalais.com/1/type/sys/InstanceInfo"/><c:docId rdf:resource="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902"/><c:subject rdf:resource="http://d.opencalais.com/genericHasher-1/8c80538c-84d5-3394-a452-81a59a5eb11a"/><!--EmailAddress: [email protected]; --><c:detection>[Jack Bauer &lt;][email protected][&gt;
Rose Goodings &lt;[email protected]&gt;]</c:detection><c:prefix>Jack Bauer &lt;</c:prefix><c:exact>[email protected]</c:exact><c:suffix>&gt;
Rose Goodings &lt;[email protected]&gt;</c:suffix><c:offset>12</c:offset><c:length>12</c:length></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902/Relevance/4"><rdf:type rdf:resource="http://s.opencalais.com/1/type/sys/RelevanceInfo"/><c:docId rdf:resource="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902"/><c:subject rdf:resource="http://d.opencalais.com/genericHasher-1/8c80538c-84d5-3394-a452-81a59a5eb11a"/><c:relevance>0.643</c:relevance></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/genericHasher-1/a7bd9537-999f-3821-8858-c57f10ecd18d"><rdf:type rdf:resource="http://s.opencalais.com/1/type/em/r/PersonEmailAddress"/><!--Jack Bauer--><c:person rdf:resource="http://d.opencalais.com/pershash-1/a3100b92-7d3d-3f63-afcb-265678c15dcc"/><[email protected]><c:emailaddress rdf:resource="http://d.opencalais.com/genericHasher-1/8c80538c-84d5-3394-a452-81a59a5eb11a"/></rdf:Description><rdf:Description rdf:about="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902/Instance/6"><rdf:type rdf:resource="http://s.opencalais.com/1/type/sys/InstanceInfo"/><c:docId rdf:resource="http://d.opencalais.com/dochash-1/e7b46664-fa0c-3da1-88f9-cb79fe0d6902"/><c:subject rdf:resource="http://d.opencalais.com/genericHasher-1/a7bd9537-999f-3821-8858-c57f10ecd18d"/><!--PersonEmailAddress: person: Jack Bauer; emailaddress: [email protected]; --><c:detection>[]Jack Bauer &lt;[email protected][&gt;
Rose Goodings &lt;[email protected]&gt;]</c:detection><c:prefix/><c:exact>Jack Bauer &lt;[email protected]</c:exact><c:suffix>&gt;
Rose Goodings &lt;[email protected]&gt;</c:suffix><c:offset>0</c:offset><c:length>24</c:length></rdf:Description></rdf:RDF>

我也有以下内容（其中文件包含上述文本）：

        System.IO.StreamReader tr = new System.IO.StreamReader("C:/test.txt");
        string s = tr.ReadToEnd();

        Graph g = new Graph();
        FileLoader.Load(g, "C:/test.txt");

并且我收到以下异常 RDFParseException

StringParser failed为了正确解析 RDF 字符串，StringParser 自动检测猜测“NTriples”，但这无法解析。 RDF 字符串可能格式错误或者 StringParser 可能猜错了

我真的迷路了，请帮忙

Answer 1

正确的是，该错误与 RDF/XML 解析器在某些情况下无法正确处理 CDATA 元素有关，现在应该修复此问题，并且我已将包含此错误修复的库的新版本上传到 dotnetrdf.org 和 SourceForge

如果您再次下载它并在 OpenCalais 的 RDF 上尝试它，它现在应该可以正常工作（我希望）

我尝试尽快修复错误可能并支持我的用户，因此如果您有任何其他问题，请在邮件列表上告诉我，以便我尽快查看并解决您的问题：

[电子邮件受保护]
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编辑

对于您的示例应用程序StringParser 无法正确检测数据格式，因为没有 RDF/XML 所期望的 声明

请尝试以下方法来显式设置要使用的解析器：

FileLoader.Load(g, "C:\test.txt", new RdfXmlParser());

或者将文件重命名为 test.rdf 在这种情况下，将从文件扩展名中猜测数据格式为 RDF/XML，而不必通过读取文件并执行一些操作来猜测原始字符串上的简单正则表达式