WWW2009 EPrints

A Flexible Dialogue System for Enhancing Web Usability

This item is a Poster.

Published Version

PDF (552Kb)


In this paper, we study how the performance and usability of web dialogue systems could be enhanced by using an appropriate representation of the different types of knowledge involved in communication: general dialogue mechanisms, specific domainrestricted linguistic and conceptual knowledge and information on how well the communication process is doing. We describe the experiments carried out to analyze how to improve this knowledge representation in the web dialogue system we developed. the system to the user’s expertise and application complexity we have distinguished two types of messages: directed and open. Directed system's messages are explicit about the information the system needs from the user at each state of the communication. Open system's messages suggest the user to introduce the information needed, but not as strongly. Although different types of messages could be used, the initiative (or control) of the dialogue is always mixed because the user can decide to select a new task at any state of the communication and the system will always guide the user to introduce the needed information. In order to improve the adaptability of the DS several systems ([1],[3]) dynamically adapt the dialogue strategy. In our DS we have incorporated an independent module that uses data on how well the communication is doing to determine the type of message and the confirmation policy. Following the methodology proposed in [1] we analyzed a corpus of dialogues to obtain the data that gives information about the most appropiate system stategy and the amount of evidence each data gives. The dialogue cues used by the adaptive module to determine the system’s respond are related to the system’s errors as well as to the content of the user’s intervention (asking for help, giving new relevant data and giving not expected data).

Export Record As...

About this site

This website has been set up for WWW2009 by Christopher Gutteridge of the University of Southampton, using our EPrints software.


We (Southampton EPrints Project) intend to preserve the files and HTML pages of this site for many years, however we will turn it into flat files for long term preservation. This means that at some point in the months after the conference the search, metadata-export, JSON interface, OAI etc. will be disabled as we "fossilize" the site. Please plan accordingly. Feel free to ask nicely for us to keep the dynamic site online longer if there's a rally good (or cool) use for it... [this has now happened, this site is now static]