Document (#42286)

Author
Rajagopal, P.
Ravana, S.D.
Koh, Y.S.
Balakrishnan, V.
Title
Evaluating the effectiveness of information retrieval systems using effort-based relevance judgment
Source
Aslib journal of information management. 71(2019) no.1, S.2-17
Year
2019
Abstract
Purpose The effort in addition to relevance is a major factor for satisfaction and utility of the document to the actual user. The purpose of this paper is to propose a method in generating relevance judgments that incorporate effort without human judges' involvement. Then the study determines the variation in system rankings due to low effort relevance judgment in evaluating retrieval systems at different depth of evaluation. Design/methodology/approach Effort-based relevance judgments are generated using a proposed boxplot approach for simple document features, HTML features and readability features. The boxplot approach is a simple yet repeatable approach in classifying documents' effort while ensuring outlier scores do not skew the grading of the entire set of documents. Findings The retrieval systems evaluation using low effort relevance judgments has a stronger influence on shallow depth of evaluation compared to deeper depth. It is proved that difference in the system rankings is due to low effort documents and not the number of relevant documents. Originality/value Hence, it is crucial to evaluate retrieval systems at shallow depth using low effort relevance judgments.
Content
Vgl.: https://doi.org/10.1108/AJIM-04-2018-0086.
Theme
Retrievalstudien

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