On Topic Difficulty in IR Evaluation: The Effect of Systems, Corpora, and System Components

Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval, pp. 909-912, 2019.

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Abstract:

In a test collection setting, topic difficulty can be defined as the average effectiveness of a set of systems for a topic. In this paper we study the effects on the topic difficulty of: (i) the set of retrieval systems; (ii) the underlying document corpus; and (iii) the system components. By generalizing methods recently proposed to stud...More

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