{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,6,18]],"date-time":"2025-06-18T04:10:57Z","timestamp":1750219857220,"version":"3.41.0"},"reference-count":5,"publisher":"Association for Computing Machinery (ACM)","issue":"1","license":[{"start":{"date-parts":[[2022,6,1]],"date-time":"2022-06-01T00:00:00Z","timestamp":1654041600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["SIGIR Forum"],"published-print":{"date-parts":[[2022,6]]},"abstract":"Although searching is often seen as a solitary activity, searching in collaboration with others is deemed useful or necessary in many complex situations such as: travel planning; online shopping; looking for health related information; planning birthday parties; working on a group project; or finding a house to buy. Researchers have found that complex search tasks can be executed more effectively and efficiently, achieve higher material coverage, and enable higher knowledge gains in an explicit collaborative setting than if conducted in isolation. However, even though researchers have carefully designed several Collaborative Search user studies, there is still conflicting evidence or a lack of evidence on the effectiveness of collaborative search systems. Thus, in this thesis, we focus on examining the effectiveness of collaborative search systems in two parts.<\/jats:p>\n \n In the first part, we shed light on the effectiveness of collaborative search systems to support two group configurations, namely\n group sizes<\/jats:italic>\n and\n users' roles.<\/jats:italic>\n <\/jats:p>\n In the second part of this thesis, we make our group configurations constant, particularly, group sizes are set to up to three people, and group members receive the same role. We then turn to a different perspective and focus on examining the effectiveness in two contexts: Search as Learning and collaborative online shopping.<\/jats:p>\n \n Awarded by:<\/jats:bold>\n Delft University of Technology, Delft, The Netherlands on 24 February 2022.\n <\/jats:p>\n \n Supervised by:<\/jats:bold>\n Claudia Hauff.\n <\/jats:p>\n \n Available at:<\/jats:bold>\n https:\/\/doi.org\/10.4233\/uuid:9f8f9ffc-c3d9-4583-8903-25889233a95b.\n <\/jats:p>","DOI":"10.1145\/3582524.3582543","type":"journal-article","created":{"date-parts":[[2023,1,27]],"date-time":"2023-01-27T17:06:33Z","timestamp":1674839193000},"page":"1-2","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Examining the Effectiveness of Collaborative Search Engines"],"prefix":"10.1145","volume":"56","author":[{"given":"Felipe","family":"Moraes","sequence":"first","affiliation":[{"name":"Booking.com, Amsterdam, The Netherlands"}]}],"member":"320","published-online":{"date-parts":[[2023,1,27]]},"reference":[{"key":"e_1_2_1_1_1","first-page":"241","volume-title":"European Conference on Information Retrieval","author":"Moraes Felipe","year":"2019","unstructured":"Felipe Moraes and Claudia Hauff . node-indri : Moving the indri toolkit to the modern web stack . In European Conference on Information Retrieval , pages 241 -- 245 . Springer , 2019 . Felipe Moraes and Claudia Hauff. node-indri: Moving the indri toolkit to the modern web stack. In European Conference on Information Retrieval, pages 241--245. Springer, 2019."},{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1145\/3269206.3271676"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10791-018-09350-9"},{"key":"e_1_2_1_4_1","volume-title":"Proceedings of the SIGIR Workshop on eCommerce","author":"Moraes Felipe","year":"2021","unstructured":"Felipe Moraes , David Maxwell , and Claudia Hauff . Exploring collaborative navigation support in collaborative product search . In Proceedings of the SIGIR Workshop on eCommerce , 2021 . Felipe Moraes, David Maxwell, and Claudia Hauff. Exploring collaborative navigation support in collaborative product search. In Proceedings of the SIGIR Workshop on eCommerce, 2021."},{"key":"e_1_2_1_5_1","first-page":"76","volume-title":"Design of Experimental Search & Information REtrieval Systems","author":"Putra Sindunuraga Rikarno","year":"2018","unstructured":"Sindunuraga Rikarno Putra , Kilian Grashoff , Felipe Moraes , and Claudia Hauff . On the development of a collaborative search system . In Design of Experimental Search & Information REtrieval Systems , pages 76 - 78 -2, 2018 . Sindunuraga Rikarno Putra, Kilian Grashoff, Felipe Moraes, and Claudia Hauff. On the development of a collaborative search system. In Design of Experimental Search & Information REtrieval Systems, pages 76-8-2, 2018."}],"container-title":["ACM SIGIR Forum"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/3582524.3582543","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/dl.acm.org\/doi\/pdf\/10.1145\/3582524.3582543","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,6,17]],"date-time":"2025-06-17T16:47:16Z","timestamp":1750178836000},"score":1,"resource":{"primary":{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/3582524.3582543"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,6]]},"references-count":5,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2022,6]]}},"alternative-id":["10.1145\/3582524.3582543"],"URL":"https:\/\/doi.org\/10.1145\/3582524.3582543","relation":{},"ISSN":["0163-5840"],"issn-type":[{"type":"print","value":"0163-5840"}],"subject":[],"published":{"date-parts":[[2022,6]]},"assertion":[{"value":"2023-01-27","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}