A Bayesian Approach for User Modeling in Dialogue Systems
نویسندگان
چکیده
User modeling is an iml>ortant COlnponents of dialog systems. Most previous approaches are rule-based methods, hi this paper, we proimse to represent user models th rough Bayesian networks. Some advantages of the Bayesian approach over the rule-based approach are as follows. First, rules for upda t ing user models are not necessary because upility theory; this provides us a more formal way of dealing with uncertainties. Second, the Bayesian network pro: r ides more detailed information of users' knowledge, because the degree of belief on each concept is provided in terms of prol~ability. We prove these advantages through a prelinfinary experiment.
منابع مشابه
A Bayesian Networks Approach to Reliability Analysis of a Launch Vehicle Liquid Propellant Engine
This paper presents an extension of Bayesian networks (BN) applied to reliability analysis of an open gas generator cycle Liquid propellant engine (OGLE) of launch vehicles. There are several methods for system reliability analysis such as RBD, FTA, FMEA, Markov Chains, and etc. But for complex systems such as LV, they are not all efficiently applicable due to failure dependencies between compo...
متن کاملUncertainty Modeling of a Group Tourism Recommendation System Based on Pearson Similarity Criteria, Bayesian Network and Self-Organizing Map Clustering Algorithm
Group tourism is one of the most important tasks in tourist recommender systems. These systems, despite of the potential contradictions among the group's tastes, seek to provide joint suggestions to all members of the group, and propose recommendations that would allow the satisfaction of a group of users rather than individual user satisfaction. Another issue that has received less attention i...
متن کاملTraining a BN-based user model for dialogue simulation with missing data
The design of a Spoken Dialogue System (SDS) is a long, iterative and costly process. Especially, it requires test phases on actual users either for assessment of performance or optimization. The number of test phases should be minimized, yet without degrading the final performance of the system. For these reasons, there has been an increasing interest for dialogue simulation during the last de...
متن کاملModeling Lateral Communication in Holonic Multi Agent Systems
Agents, in a multi agent system, communicate with each other through the process of exchanging messages which is called dialogue. Multi agent organization is generally used to optimize agents’ communications. Holonic organization demonstrates a self-similar recursive and hierarchical structure in which each holon may include some other holons. In a holonic system, lateral communication occurs b...
متن کاملInverse Problems in Imaging Systems and the General Bayesian Inversion Frawework
In this paper, first a great number of inverse problems which arise in instrumentation, in computer imaging systems and in computer vision are presented. Then a common general forward modeling for them is given and the corresponding inversion problem is presented. Then, after showing the inadequacy of the classical analytical and least square methods for these ill posed inverse problems, a Baye...
متن کامل