document: Towards the self-annotating web The success of the Semantic Web depends on the availability of ontologies as well as on the proliferation of web pages annotated with metadata conforming to these ontologies . Thus , a crucial question is where to acquire these metadata from . In this paper wepropose PANKOW ( Pattern-based Annotation through Knowledge on theWeb ) , a method which employs an unsupervised , pattern-based approach to categorize instances with regard to an ontology . The approach is evaluated against the manual annotations of two human subjects . The approach is implemented in OntoMat , an annotation tool for the Semantic Web and shows very promising results .
doc_bio_tags: O O O O O O O O B I O O O O O O O O O O O O O O O O O B O O O O O O O O O O O O O O O B O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I O O O O O O