Michels, CarolinAgarwal, SudhirFähnrich, Klaus-PeterFranczyk, Bogdan2019-01-112019-01-112010978-3-88579-270-3https://dl.gi.de/handle/20.500.12116/19353Preference elicitation is often used in e-services to create product recommendations for their customers. We present an approach for applying preference elicitation techniques for a semi-automatic query generation system for Web service compositions. These techniques are used for identifying the user's demands on the desired Web service composition and furthermore the trade-offs between interdependent or conflicting preferences. In our iterative process the query is automatically (re-)formulated to present results to the user, so that he can detect undesired characteristics and revise his specifications until he is presented a satisfiable result.enText/Conference Paper1617-5468