tailieunhanh - Báo cáo khoa học: "Intensional Summaries as Cooperative Responses in Dialogue: Automation and Evaluation"

Despite its long history, and a great deal of research producing many useful algorithms and observations, research in cooperative response generation has had little impact on the recent commercialization of dialogue technologies, particularly within the spoken dialogue community. We hypothesize that a particular type of cooperative response, intensional summaries, are effective for when users are unfamiliar with the domain. | Intensional Summaries as Cooperative Responses in Dialogue Automation and Evaluation Joseph Polifroni Nokia Research Center 3 Cambridge Center Cambridge MA 02142 USA Marilyn Walker Department of Computer Science University of Sheffield Sheffield S1 4DP United Kingdom Abstract Despite its long history and a great deal of research producing many useful algorithms and observations research in cooperative response generation has had little impact on the recent commercialization of dialogue technologies particularly within the spoken dialogue community. We hypothesize that a particular type of cooperative response intensional summaries are effective for when users are unfamiliar with the domain. We evaluate this hypothesis with two experiments with CRUISER a DS for in-car or mobile users to access restaurant information. First we compare CRUISER with a baseline system-initiative DS and show that users prefer CRUISER. Then we experiment with four algorithms for constructing intensional summaries in CRUISER and show that two summary types are equally effective summaries that maximize domain coverage and summaries that maximize utility with respect to a user model. U1 Tell me about restaurants in London. SI1 What kind of cuisine are you interested in C1 I know of 596 restaurants in London. I know of 3 inexpensive vegetarian restaurants and 14 inexpensive Chinese restaurants. I also know of 4 inexpensive Greek restaurants. U2 Chinese. SI2 Do you have a price range in mind C2 1 know of 27 restaurants in London that serve Chinese food. There are 8 inexpensive Chinese restaurants in Chinatown and 2 inexpensive Chinese restaurants in Hamp-stead Kilburn. I also know of 1 inexpensive Chinese restaurant in Soho. U3 How about a cheap one SIS What neighborhood would you like C3 I know of 1 inexpensive Chinese restaurant in Hampstead Kilburn with very good food quality and 1 in Bayswater with good food quality. I also know of 2 in