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The effort required by the user to make such an assessment can, however, depend on the user\u2019s familiarity with the presented items and directly impact on the reported user satisfaction. In this paper, we report the results of a preliminary recommender systems user study using Mechanical Turk, which indicates that item familiarity is strongly correlated with overall satisfaction.<\/jats:p>","DOI":"10.1515\/icom-2015-0018","type":"journal-article","created":{"date-parts":[[2015,6,10]],"date-time":"2015-06-10T20:47:12Z","timestamp":1433969232000},"page":"29-39","source":"Crossref","is-referenced-by-count":5,"title":["Item Familiarity as a Possible Confounding Factor in User-Centric Recommender Systems Evaluation"],"prefix":"10.1515","volume":"14","author":[{"given":"Dietmar","family":"Jannach","sequence":"first","affiliation":[{"name":"TU Dortmund, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lukas","family":"Lerche","sequence":"additional","affiliation":[{"name":"TU Dortmund, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael","family":"Jugovac","sequence":"additional","affiliation":[{"name":"TU Dortmund, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"374","published-online":{"date-parts":[[2015,4,1]]},"reference":[{"key":"2025120518125066331_j_icom-2015-0018_ref_001","doi-asserted-by":"crossref","unstructured":"Jannach, D., Zanker, M., Felfernig, A., Friedrich, G.: Recommender Systems - An introduction, Cambridge University Press, 2010.","DOI":"10.1017\/CBO9780511763113"},{"key":"2025120518125066331_j_icom-2015-0018_ref_002","doi-asserted-by":"crossref","unstructured":"Pu, P., Chen, L., Hu, R.: A user-centric evaluation framework for recommender systems, Proceedings of the Fifth ACM Conference on Recommender Systems (RecSys \u201811), pp. 157\u2013164, 2011","DOI":"10.1145\/2043932.2043962"},{"key":"2025120518125066331_j_icom-2015-0018_ref_003","doi-asserted-by":"crossref","unstructured":"Knijnenburg, B. 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