Method for Ontology Extraction Based on Unknown Structure Web
Yunfa Hu · 2009
To the user,the structure of the data in HTML tables on the Web is usually unknown,thus,the data of in-terest can't be queried directly.We presented a solution to this problem.The solution entails the understand of table element,data integration and wrapper creation.Table unstanding is to find interest table,recognize attribute and value in the table,pair attributes with values and form records.Data integration is to match source records with a target schema.Ontology specified wrappers is to extract the data from source records into a target schema.Results show that the data with unknown structure can be directly queried through a known target schema.