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2018-04-19T06:29:34.329088

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2018-09-28T10:58:14.983086

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VirtuosoLODSampleTutorial

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%META:TOPICPARENT{name="VirtFacetBrowserInstallConfig"}% ---+ Faceted Browsing Tutorial, using LOD Cloud Cache data space The following tutorial demonstrates a simple scenario of tracking Kingsley Idehen's conversations across the Web, using the [[http://lod.openlinksw.com/fct][Virtuoso Faceted Browser on the LOD Cloud Cache instance]]. 1 Go to <code>[[http://lod.openlinksw.com/fct/][http://lod.openlinksw.com/fct/]]</code>. %BR%%BR%<img src="%ATTACHURLPATH%/fb2.png" style="wikiautogen"/>%BR%%BR% 1. Enter a free text search pattern (for example, "<code>Kingsley Idehen</code>"), and click Search: %BR%%BR%<img src="%ATTACHURLPATH%/f1.png" style="wikiautogen"/>%BR%%BR% 1 The initial query results page will display a list of literal value snippets from property values associated with the query text pattern: %BR%%BR%<img src="%ATTACHURLPATH%/f2.png" style="wikiautogen"/>%BR%%BR% 1. Using the Navigation section on the right, click on "<b>Types</b>", which alters the contents of the query results area to present [[http://www.w3.org/TR/curie/][CURIE based hyperlinks]] for each of the Entity Types associated with Property values that contains the query text pattern: %BR%%BR%<img src="%ATTACHURLPATH%/f3.png" style="wikiautogen"/>%BR%%BR% 1 You can click the <b>Describe</b> link in the <b>Type</b> column <b>Describe</b> to get a list of Attributes and Values and an automatically generated QRCode image for any listed type. For example, after clicking on <b>atom:Entry</b>, the <b>DESCRIBE type</b> page would show &mdash; %BR%%BR%<img src="%ATTACHURLPATH%/f4.png" style="wikiautogen"/>%BR%%BR% 1 Click the <b>Facets</b> tab to return to the <b>Types</b> content page from the previous step. 1 Click on the <b>Person</b> link to narrow the result set down to <b>Entities</b> of this <b>Type</b> (i.e., <code>rdf:type foaf:Person</code>): %BR%%BR%<img src="%ATTACHURLPATH%/f7.png" style="wikiautogen"/>%BR%%BR% * Note: To Negate (filter out) based on this Entity Type, you can un-tick the check-box shown beside the link. %BR%%BR%<img src="%ATTACHURLPATH%/f5.png" style="wikiautogen"/>%BR%%BR% %BR%%BR%<img src="%ATTACHURLPATH%/f6.png" style="wikiautogen"/>%BR%%BR% * You can filter further by switching (pivoting) to the a <b>Property</b>-based view, by returning to the <b>Navigation</b> section and then clicking on <b>Attributes</b> or <b>Referencing Attributes</b> link. In either case, you can filter further based on a combination of <b>Properties</b> and <b>Entities</b> where <b>Entities</b> in the result-set contain values matching the query text pattern: %BR%%BR%<img src="%ATTACHURLPATH%/f8.png" style="wikiautogen"/>%BR%%BR% 1 From <b>Entity Relations Navigation</b>, click <b>Attributes</b>. %BR%%BR%<img src="%ATTACHURLPATH%/f9.png" style="wikiautogen"/>%BR%%BR% 1 You can navigate among the search result pages by using the <b>Prev</b> and <b>Next</b> buttons. For example, click <b>Next</b>: %BR%%BR%<img src="%ATTACHURLPATH%/f10.png" style="wikiautogen"/>%BR%%BR% 1. From the list of <b>Attribute Types</b>, click on the <b><code>foaf:interest</code></b> link to filter further, based on the values of this property: %BR%%BR%<img src="%ATTACHURLPATH%/f11.png" style="wikiautogen"/>%BR%%BR% 1. From the list of <b><code>foaf:interest</code></b> <b>Values</b>, click on <b><>About:Linked Data</b> link, which filters the result-set further to reveal <b>Entity Identifier Links</b> (Generic HTTP URIs) and <b>Labels</b> for each <b><code>foaf:Person</code></b> associated with the property <b><code>foaf:interest</code></b>, in the LOD data space: %BR%%BR%<img src="%ATTACHURLPATH%/f12.png" style="wikiautogen"/>%BR%%BR% 1. Click on one of the HTTP URIs in the filtered result set to obtain a detailed structured description of a given <b>Entity</b>, e.g., about the person <b>Kingsley Uyi Idehen</b>. Each listed <b>Property</b> is a <b>Link</b> to other structured <b>Entity</b> descriptions. Additionally, a QRCode image will be produced automatically for each entity: %BR%%BR%<img src="%ATTACHURLPATH%/f13.png" style="wikiautogen"/> %BR%<img src="%ATTACHURLPATH%/f14.png" style="wikiautogen"/> %BR%<img src="%ATTACHURLPATH%/f15.png" style="wikiautogen"/> %BR%<img src="%ATTACHURLPATH%/f16.png" style="wikiautogen"/>%BR%%BR% 1 You can navigate among the search result pages by using the <b>First</b>, <b>Prev</b>, <b>Next</b>, and <b>Last</b> buttons. For example, click <b>Last</b>: %BR%%BR%<img src="%ATTACHURLPATH%/f17.png" style="wikiautogen"/> %BR%<img src="%ATTACHURLPATH%/f18.png" style="wikiautogen"/>%BR%%BR% 1. Click on the <b>Metadata</b> link to get a summary view of this <b>Entity</b> within this <b>Linked Data Space</b>. The <b>Source</b> tab shows ingested graphs which describe the specific <b>Entity</b>; the <b>Reference</b> tab shows ingested graphs which mention the specific <b>Entity</b>. %BR%%BR%<img src="%ATTACHURLPATH%/f19.png" style="wikiautogen"/>%BR%%BR% %BR%%BR%<img src="%ATTACHURLPATH%/f20.png" style="wikiautogen"/>%BR%%BR% 1 <b>Direct</b> and <b>Indirect</b> coreferences show other references (Identifiers) that are associated with the entity identified by the current identifier (similar to <i>other names (aliases) used by this person</i> or <i>unofficial or informal names (nicknames) others use for this entity</i>): %BR%%BR%<img src="%ATTACHURLPATH%/f21.png" style="wikiautogen"/>%BR%%BR% %BR%%BR%<img src="%ATTACHURLPATH%/f22.png" style="wikiautogen"/>%BR%%BR% 1. Click on <b>Settings</b> and tick the box for <b><code>owl:sameAs</code></b> to set a context mode for the session (meaning: a set of rules to take effect): %BR%%BR%<img src="%ATTACHURLPATH%/f23.png" style="wikiautogen"/>%BR%%BR% 1 Go back to the <b>Direct Coreference</b> tab: %BR%%BR%<img src="%ATTACHURLPATH%/f24.png" style="wikiautogen"/>%BR%%BR% 1 As a result, each link will unveil a <code>UNION</code> (combination) of all the the data associated with all of Kingsley Idehen's other <b>Identifiers</g> (other Names in other places), i.e., they all show the same data. 1. Go to <b>Facets</b>, <b>Entity Relations Navigation</b>", and click <b>New Search</b>. 1 Enter a new free-text search pattern (for example, <b><code>Camcorder</code></b>), and click <b>Search</b>: %BR%%BR%<img src="%ATTACHURLPATH%/fb19.png" style="wikiautogen"/>%BR%%BR% 1 The query result page will now display a list of literal value snippets where each URI will be displayed with a label: %BR%%BR%<img src="%ATTACHURLPATH%/fb20.png" style="wikiautogen"/>%BR%%BR% 1 For example, click on the URL link of the first row result. 1 The product description page will be shown, and a list of <b>Attributes</b> and <b>Values</b> will be presented. An label for the URI of the product also will be shown, e.g., <b>CG-800</b>: %BR%%BR%<img src="%ATTACHURLPATH%/fb21.png" style="wikiautogen"/> %BR%<img src="%ATTACHURLPATH%/fb22.png" style="wikiautogen"/> %BR%<img src="%ATTACHURLPATH%/fb23.png" style="wikiautogen"/>%BR%%BR% ---++ Related * Facets Web Service * [[VirtuosoFacetsWebService][Virtuoso Facets Web Service]] * Linked Data * [[VirtuosoFacetsViewsLinkedData][Faceted Views over Large-Scale Linked Data]] * Facet Browser Installation and configuration * [[VirtFacetBrowserInstallConfig][Virtuoso Facet Browser Installation and configuration]] * Facet APIs * [[VirtFacetBrowserAPIs][Virtuoso APIs for FCT REST services]] * [[VirtFacetBrowserAPIsFCTEXEC][<code><nowiki>fct_exec</nowiki></code> API Example]] * Pivot Viewer and CXML * [[http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtSparqlCxmlFacetPivotBridge#AncSparqlCxmlFacetPivotBridge][Facet Pivot Bridge - A bridge to PivotViewer from Virtuoso's Faceted query service for RDF]] * [[http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtSparqlCxml#AncFacetTypeAutoDetection][Auto-Detection of Facet Type]] * Tutorials * [[VirtuosoFacetsWebServiceSOAPExample][SOAP Facets Example]] * [[VirtFacetBrowserInstallConfigQueried][Querying The Facet Browser Web Service endpoint]] * [[VirtFCTFeatureQueries][Virtuoso Facet Browser Featured Queries]] * [[http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtVisualizeWithPivotViewer#GenFCT][Visualizing Your Data With PivotViewer Using The Facet Browser]] * [[VirtTipsAndTricksCustomControlLabelsURI][Custom Controlling Virtuoso Labels for URI functionality Example]] * [[VirtuosoFacetsWebServiceCustmExamples][Facets Web Service: Examples for customizing different types]] * [[VirtuosoFacetsWebServiceChoiceExample][Facets Web Service: Choice of Labels Example]] * Downloads * [[http://shop.openlinksw.com/license_generator/virtuoso-download/][Latest Virtuoso]] * [[https://virtuoso.openlinksw.com/download/][Virtuoso Facet Browser VAD package]]

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VirtuosoLODSampleTutorial

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