Auflistung nach Autor:in "Felfernig, Alexander"
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- KonferenzbeitragIntelligent debugging of utility constraints in configuration knowledge bases(INFORMATIK 2010. Service Science – Neue Perspektiven für die Informatik. Band 1, 2010) Felfernig, Alexander; Mandl, Monika; Schubert, MonikaKnowledge-based configurators support customers in preference construction processes related to complex products and services. In this context utility constraints (scoring rules) play an important role. They determine the order in which configurations are presented to customers. In many cases utility constraints are faulty, i.e., calculate configuration rankings which are not expected and accepted by marketing and sales experts. The repair of these constraints is extremely time-consuming and often an error-prone task. In this paper we present an approach which effectively supports automated debugging and repair of faulty utility constraint sets. This approach allows us to automatically take into account intended rankings of configurations specified by marketing and sales experts.
- KonferenzbeitragOn the Importance of Subtext in Recommender Systems(i-com: Vol. 14, No. 1, 2015) Grasch, Peter; Felfernig, AlexanderConversational recommender systems have been shown capable of allowing users to navigate even complex and unknown application domains effectively. However, optimizing preference elicitation remains a largely unsolved problem. In this paper we introduce SPEECHREC, a speech-enabled, knowledge-based recommender system, that engages the user in a natural-language dialog, identifying not only purely factual constraints from the users’ input, but also integrating nuanced lexical qualifiers and paralinguistic information into the recommendation strategy. In order to assess the viability of this concept, we present the results of an empirical study where we compare SPEECHREC to a traditional knowledge-based recommender system and show how incorporating more granular user preferences in the recommendation strategy can increase recommendation quality, while reducing median session length by 46 %.
- KonferenzbeitragSocio-Technical Design and Value Orientation(INFORMATIK 2019: 50 Jahre Gesellschaft für Informatik – Informatik für Gesellschaft, 2019) Maalej, Walid; Felfernig, Alexander