document: Towards extracting flickr tag semantics We address the problem of extracting semantics of tags -- short , unstructured text-labels assigned to resources on the Web -- based on each tag 's metadata patterns . In particular , we describe an approach for extracting place and event semantics for tags that are assigned to photos on Flickr , a popular photo sharing website supporting time and location ( latitude\/longitude ) metadata . The approach can be generalized to other domains where text terms can be extracted and associated with metadata patterns , such as geo-annotated web pages .
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