Chat and goal-oriented dialog together: a unified example-based architecture for multi-domain dialog management

This paper discusses development of a multi-domain conversational dialog system for simultaneously managing chats and goal-oriented dialogs. In this paper, we present a UMDM (unified multi-domain dialog manager) using a novel example-based dialog management technique. We have developed an effective utterance classifier with linguistic, semantic, and keyword features for domain switching and an example-based dialog modeling technique for domain-portable dialog models. Our experiments show that our approach is very useful and effective in multi-domain dialog system.

1. Introduction

Recent dialog systems have been applied for use in various applications for natural and conversational interfaces in mobile and ubiquitous environments. Such dialog systems are now able to provide services for telematics, home networking, or intelligent robots. These systems gradually have been capable of supporting multiple domains and accessing information from a broad variety of sources and services to operate on not only one but across several restricted domains.