Web Extraction Method Based on DOM Tree and Domain Ontology

To solve the problem of automatic extraction from different DeepWeb result page structures,this paper proposes a method which combines the Web structure and the content of Web pages.This method uses the characteristics of data content and the DOM tree nodes which are marked by the domain ontology library positioning data area.An improved simple tree matching algorithm is used to identify data records.Experimental results show that the F-measure value of this method is 2.93%~6.67% higher than that of traditional methods.