Analyzing image search behaviour of radiologists: : semantics and prediction of query results

De-Arteaga, Maria (Carnegie Mellon University) ; Eggel, Ivan (University of Applied Sciences and Arts Western Switzerland (HES-SO Valais-Wallis)) ; Kahn, Charles (University of Pennsylvania) ; Müller, Henning (University of Applied Sciences and Arts Western Switzerland (HES-SO Valais-Wallis))

Log files of information retrieval systems that record user behavior have been used to improve the outcomes of retrieval systems, understand user behavior, and predict events. In this article, a log file of the ARRS GoldMiner search engine containing 222,005 consecutive queries is analyzed. Time stamps are available for each query, as well as masked IP addresses, which enables to identify queries from the same person. This article describes the ways in which physicians (or Internet searchers interested in medical images) search and proposes potential improvements by suggesting query modifications. For example, many queries contain only few terms and therefore are not specific; others contain spelling mistakes or non-medical terms that likely lead to poor or empty results. One of the goals of this report is to predict the number of results a query will have since such a model allows search engines to automatically propose query modifications in order to avoid result lists that are empty or too large. This prediction is made based on characteristics of the query terms themselves. Prediction of empty results has an accuracy above 88 %, and thus can be used to automatically modify the query to avoid empty result sets for a user. The semantic analysis and data of reformulations done by users in the past can aid the development of better search systems, particularly to improve results for novice users. Therefore, this paper gives important ideas to better understand how people search and how to use this knowledge to improve the performance of specialized medical search engines.

Type d'article:
Economie et Services
HEG VS HES-SO Valais-Wallis - Haute Ecole de Gestion & Tourisme
Institut Informatique de gestion
Titre du document hôte:
Journal of digital imaging
Numérotation (vol. no.):
October 2015, vol. 28, Issue 5, pp. 537-546
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Note  Le statut de ce document est: non diffusé

Note: The status of this file is: restricted

 Notice créée le 2015-11-19, modifiée le 2018-02-15

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