4,305 research outputs found
Easy on that trigger dad: a study of long term family photo retrieval
We examine the effects of new technologies for digital photography on people's longer term storage and access to collections of personal photos. We report an empirical study of parents' ability to retrieve photos related to salient family events from more than a year ago. Performance was relatively poor with people failing to find almost 40% of pictures. We analyze participants' organizational and access strategies to identify reasons for this poor performance. Possible reasons for retrieval failure include: storing too many pictures, rudimentary organization, use of multiple storage systems, failure to maintain collections and participants' false beliefs about their ability to access photos. We conclude by exploring the technical and theoretical implications of these findings
Assessing the effectiveness of pen-based input queries
In this poster, we describe an experiment exploring the effectiveness of a pen based text input device for use in query construction. Standard TREC queries were written, recognised, and subsequently retrieved upon. Comparisons between retrieval effectiveness based on the recognised writing and a typed text baseline were made. On average, effectiveness was 75% of the baseline. Other statistics on the quality and nature of recognition are also reported
The Relationship between IR Effectiveness Measures and User Satisfaction
This paper presents an experimental study of users assessing the quality of Google web search results. In particular we look at how users' satisfaction correlates with the effectiveness of Google as quantified by IR measures such as precision and the suite of Cumulative Gain measures (CG, DCG, NDCG). Results indicate strong correlation between users' satisfaction, CG and precision, moderate correlation with DCG, with perhaps surprisingly negligible correlation with NDCG. The reasons for the low correlation with NDCG are examined
Users' effectiveness and satisfaction for image retrieval
This paper presents results from an initial user
study exploring the relationship between system
effectiveness as quantified by traditional
measures such as precision and recall, and users’
effectiveness and satisfaction of the results. The
tasks involve finding images for recall-based
tasks. It was concluded that no direct relationship
between system effectiveness and users’
performance could be proven (as shown by
previous research). People learn to adapt to a
system regardless of its effectiveness. This study
recommends that a combination of attributes
(e.g. system effectiveness, user performance and
satisfaction) is a more effective way to evaluate
interactive retrieval systems. Results of this
study also reveal that users are more concerned
with accuracy than coverage of the search
results
Relevance Judgments between TREC and Non-TREC Assessors
This paper investigates the agreement of relevance assessments between official TREC judgments and those generated from an interactive IR experiment. Results show that 63% of documents judged relevant by our users matched official TREC judgments. Several factors contributed to differences in the agreements: the number of retrieved relevant documents; the number of relevant documents judged; system effectiveness per topic and the ranking of relevant documents
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