![]() ![]() Specifically, the whole research was divided into three parts: lane segmentation, lane discrimination, and mapping. Consequently, we proposed a fast and robust lane detection method by combining a semantic segmentation network and an optical flow estimation network. However, the performance of fast and slim methods is not satisfactory in sophisticated scenarios and some robust methods are not fast enough. In recent years, a number of lane detection methods have been proposed. It will then be possible to switch off anything that is considered inappropriate on some site.Lane detection is a significant technology for autonomous driving. Instead of having one mechanism which allows you to substitute any internal URI by an external URI, we support some language features explicitly (domain and range might be further candidates). Our general idea is to allow wiki hosters to enable or disable certain expressive features selectively. Also, it will be ignored on pages that are not exported as owl properties. But it is not considered during RDF export yet. there already is a relation "is subrelation of" which is recognized as a special property (in English wikis). We have a mechanism of adding special relations/attributes with internationalized names, and we will support more language features of owl and other specs in the future. on the page of "Relation:Is capital of" one could state "]") The function is intended to provide a way of mapping imported ontologies to their original URIs, not for substituting internal relations for external URIs in the export. This feature is not yet intended for large public wikis, since it allows people to mess up the RDF export with very local edits (e.g. For classes, you get owl:equivalentclass and for properties owl:equivalentproperty. The idea is that you can say "]" to get owl:sameas in the RDF export. We do not really want literal owl-statements in the wiki (especially since we have to provide internationalized versions anyway). In e-mail to semediawiki-user on, Markus Krötzsch commented Note that you cannot add additional semantic properties to it by putting rdfs and owl relations into Relation: pages these are turned into SMW properties in RDF Export. The RDF Export from SMW uses some rdfs and owl properties to represent the relations and attribute values in SMW. To distinguish the article from the subject of the article, the latter has an underscore prefixed to the article title, e.g.įutures Specifying additional semantic information The RDF export has to re-encode MediaWiki URL's to make them URI's that are valid in RDF. This links to a special page that does the export. The infobox in each page has an Export as RDF hyperlink. But the page does have a last author, etc. The San Diego page does not have a population, the subject of the page has a population. Note that you need to distinguish between statements about the page from statements about the page's subject. The destination of the relation link, or the value of the attribute, is the value. The type of relation or attribute name is the property. The relations to other pages and attribute values pertain to the current page, so the article is the subject. The semantic information that SMW adds to MediaWiki is well represented as RDF triples. property 4: category, linking regular pages to categories.property 1: has Type, linking Attribute pages to a datatype.Smw_specialprops stores certain special properties of pages, including: If the code for the datatype is able to convert units, then the value stored is in the standard unit for the datatype, regardless of the units entered by the page author. In SMW 0.3, all values are stored as strings. It stores the subject page's namespace + nameattribute, the datatype (e.g. "is capital of"), and object page's namespace + name. It stores the subject page's namespace + name, relation (e.g. Smw_relation stores relations between articles. The SQL code that creates the SMW tables is in function SMW_CreateSemanticTables() in the file includes/SMW_Storage.php file, you can view its source in CVS. ![]() To see the tables created by SMW, you can browse the wikidb database on a running implementation and inspect the smw_ tables. This poses integration problems with MediaWiki servers, so SMW stores the information in conventional SQL tables while providing import and export via RDF. The blueprint called for storing relations and attributes in an RDF triplestore. ![]()
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