Results are clustered by tool which returned link. Duplicates are not removed. Provides contemplative quotes while waiting for results. Phrase and multiple-concept queries yielded higher precision. Clusters results by domain and removes duplicates.
Clusters results by which search engine returned the link.
Phrase and multiple-concept queries yielded higher precision than keyword queries. Phrase and multiple-concept yielded higher precision. Displays results by relevance ranking. Users can integrate results and limit by type of material and domain. Did not remove duplicates.