@article {17475,
	title = {Users can change their web search tactics: Design guidelines for categorized overviews},
	journal = {Information Processing \& Management},
	volume = {44},
	year = {2008},
	month = {2008/03//},
	pages = {463 - 484},
	abstract = {Categorized overviews of web search results are a promising way to support user exploration, understanding, and discovery. These search interfaces combine a metadata-based overview with the list of search results to enable a rich form of interaction. A study of 24 sophisticated users carrying out complex tasks suggests how searchers may adapt their search tactics when using categorized overviews. This mixed methods study evaluated categorized overviews of web search results organized into thematic, geographic, and government categories. Participants conducted four exploratory searches during a 2-hour session to generate ideas for newspaper articles about specified topics such as {\textquotedblleft}human smuggling.{\textquotedblright} Results showed that subjects explored deeper while feeling more organized, and that the categorized overview helped subjects better assess their results, although no significant differences were detected in the quality of the article ideas. A qualitative analysis of searcher comments identified seven tactics that participants reported adopting when using categorized overviews. This paper concludes by proposing a set of guidelines for the design of exploratory search interfaces. An understanding of the impact of categorized overviews on search tactics will be useful to web search researchers, search interface designers, information architects and web developers.},
	keywords = {categorization, Categorized overviews, Categorized search results, Exploratory search, Human-computer interaction, information seeking, Search result visualization, Search user interfaces, Web search},
	isbn = {0306-4573},
	doi = {10.1016/j.ipm.2007.07.014},
	url = {http://www.sciencedirect.com/science/article/pii/S0306457307001574},
	author = {Kules,Bill and Shneiderman, Ben}
}
@article {15281,
	title = {An exploration of the principles underlying redundancy-based factoid question answering},
	journal = {ACM Transactions on Information Systems},
	volume = {25},
	year = {2007},
	month = {2007/04//},
	abstract = {The so-called {\textquotedblleft}redundancy-based{\textquotedblright} approach to question answering represents a successful strategy for mining answers to factoid questions such as {\textquotedblleft}Who shot Abraham Lincoln?{\textquotedblright} from the World Wide Web. Through contrastive and ablation experiments with Aranea, a system that has performed well in several TREC QA evaluations, this work examines the underlying assumptions and principles behind redundancy-based techniques. Specifically, we develop two theses: that stable characteristics of data redundancy allow factoid systems to rely on external {\textquotedblleft}black box{\textquotedblright} components, and that despite embodying a data-driven approach, redundancy-based methods encode a substantial amount of knowledge in the form of heuristics. Overall, this work attempts to address the broader question of {\textquotedblleft}what really matters{\textquotedblright} and to provide guidance for future researchers.},
	keywords = {Data redundancy, Web search},
	isbn = {1046-8188},
	doi = {10.1145/1229179.1229180},
	url = {http://doi.acm.org/10.1145/1229179.1229180},
	author = {Jimmy Lin}
}
