This article compares search effectiveness when using query-based Internet search (via the Google search engine), directory-based search (via Yahoo) and phrasebased query reformul...
Most casual users of IR systems type short queries. Recent research has shown that adding new words to these queries via adhoc feedback improves the retrieval e ectiveness of such ...
In this paper, we focus on the ontological concept extraction and evaluation process from HTML documents. In order to improve this process, we propose an unsupervised hierarchical...
During the last decades eGovernment has been a vivid, dynamic research and development area. As services are being transformed, electronic documents and web services appear every d...
Recently, the credibility of information on the Web has become an important issue. In addition to telling about content of source documents, indicating how to interpret the conten...