HCIL-2009-27

Golbeck, J., Hu, C.
October 2009
HCIL-2009-27
There are many search and browsing tasks online where relevance scores are not particularly important to the user, but other scores like popularity or average rating can be very informative. If and how these scores are shown varies widely between systems. In this paper, we investigate di erent methods for visualizing these scores and how they a ect user behavior. We conducted a con- trolled study with 21 subjects who each completed tasks with six di erent visualization methods. We found that there was no signi cant di erence between the meth- ods with respect to their impact on the user interaction with search results, but that there was a strong prefer- ence for having some sort of visualization. We discuss the experiment, results, and design implications that follow from this work.
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