Integrating Keywords and Semantics on Document Annotation and Search

摘要

This paper describes GoNTogle, a framework for document annota-tion and retrieval, built on top of Semantic Web and IR technologies. GoN-Togle supports ontology-based annotation for documents of several formats, in a fully collaborative environment. It provides both manual and automatic anno-tation mechanisms. Automatic annotation is based on a learning method that exploits user annotation history and textual information to automatically sug-gest annotations for new documents. GoNTogle also provides search facilities beyond the traditional keyword-based search. A flexible combination of key-word-based and semantic-based search over documents is proposed in conjunc-tion with advanced ontology-based search operations. The proposed methods are implemented in a fully functional tool and their effectiveness is experimen-tally validated.