1. Exploiting clustering and phrases for context-based information retrieval;Anick,1997
2. Multi-engine search tool with clustering;Chang,1997
3. Relevance feedback revisited;Harman,1992
4. Reexamining the cluster hypothesis: scatter/gather on retrieval results;Hearst,1996
5. Relevance weighting of search terms;Robertson;Journal of the American Society for Information Science,1995