Tag trails: navigation with context and history
CHI '09 Extended Abstracts on Human Factors in Computing Systems
Of kings, traffic signs and flowers: exploring navigation of tagged documents
Proceedings of the 21st ACM conference on Hypertext and hypermedia
Metadata visualization of scholarly search results: supporting exploration and discovery
Proceedings of the 12th International Conference on Knowledge Management and Knowledge Technologies
A user interface guide for web search systems
Proceedings of the 24th Australian Computer-Human Interaction Conference
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Although information retrieval techniques used by Web search engines have improved substantially over the years, the results of Web searches have continued to be represented in simple list-based formats. Although the list-based representation makes it easy to evaluate a single document for relevance, it does not support the users in the broader tasks of manipulating or exploring the search results as they attempt to find a collection of relevant documents. HotMap is a meta-search system that provides a compact visual representation of Web search results at two levels of detail, and it supports interactive exploration via nested sorting of Web search results based on query term frequencies. An evaluation of the search results for a set of vague queries has shown that the re-sorted search results can provide a higher portion of relevant documents among the top search results. User studies show an increase in speed and effectiveness and a reduction in missed documents when comparing HotMap to the list-based representation used by Google. Subjective measures were positive, and users showed a preference for the HotMap interface. These results provide evidence for the utility of next-generation Web search results interfaces that promote interactive search results exploration. © 2009 Wiley Periodicals, Inc.