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Integrating standard test collections in interactive IR instruction
"... Information retrieval experiments usually measure the average effectiveness of the IR methods developed. Direct use of an operational retrieval system has the shortcoming that the user is not given feedback about the effectiveness of queries. The Query Performance Analyser (QPA) for information retr ..."
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Information retrieval experiments usually measure the average effectiveness of the IR methods developed. Direct use of an operational retrieval system has the shortcoming that the user is not given feedback about the effectiveness of queries. The Query Performance Analyser (QPA) for information retrieval systems is an interactive tool for the performance analysis of individual queries. On top of a standard test collection, it gives an instant visualisation of the performance achieved in a given search topic by any user-generated query. In addition to experimental IR research, the QPA can be used in user training to demonstrate the characteristics of and compare differences between IR systems and searching strategies. The experiences of using the tool in IR instruction are reported. The need to link instruction and research is underlined. Information retrieval, learning environments, test collections, visualisation. 1.
Physicists’ information tasks: structure, length and retrieval performance
- In Proceedings of the third symposium on Information interaction in context, IIiX ’10
, 2010
"... In this poster, we describe central aspects of 65 natural information tasks from 23 senior researchers, PhDs, and experienced MSc students from three different university departments of physics. We analyze 1) the main purpose of the information task, 2) which and how many search facets were used to ..."
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In this poster, we describe central aspects of 65 natural information tasks from 23 senior researchers, PhDs, and experienced MSc students from three different university departments of physics. We analyze 1) the main purpose of the information task, 2) which and how many search facets were used to describe the tasks, 3) what semantic categories were used to express the search facets, and 4) retrieval performance. Results show variety in structure and length across task descriptions and task purposes. The results indicate effect of length and, in particular, of task purpose on retrieval performance of different document description levels that should be examined further.
Physicists ’ Information Tasks: Structure, Length and Retrieval Performance
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"... Physicists' information tasks: structure, length and retrieval performance ABSTRACT In this poster, we describe central aspects of 65 natural information tasks from 23 senior researchers, PhDs, and experienced MSc students from three different university departments of physics. We analyze 1) ..."
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Physicists' information tasks: structure, length and retrieval performance ABSTRACT In this poster, we describe central aspects of 65 natural information tasks from 23 senior researchers, PhDs, and experienced MSc students from three different university departments of physics. We analyze 1) the main purpose of the information task, 2) which and how many search facets were used to describe the tasks, 3) what semantic categories were used to express the search facets, and 4) retrieval performance. Result show variety in structure and length across tasks and task purposes. The results indicate effect of length and, in particular, task purpose on retrieval performance of different document description levels that should be examined further.
