A tractable hybrid DDN-POMDP approach to affective dialogue modeling for probabilistic frame-based dialogue systems

Add to your list(s) Download to your calendar using vCal

• Trung Bui (Twente)
• Monday 20 October 2008, 13:00-14:00
• LR5, Engineering Department, Baker Building.

If you have a question about this talk, please contact Dr Marcus Tomalin.

Partially Observable Markov Decision Processes (POMDPs) have been empirically demonstrated as a sound model for spoken dialogue management design. This talk will show that the model is also potentially appropriate for designing affective dialogue problems.

In the first part of my talk, I will present an affective dialogue model using factored POMD Ps and a performance evaluation for this model. Then, I will address several practical issues related to the development of POMDP -based dialogue managers for real-world dialogue systems. In accordance with researchers in the field, one of the major problems remains tractability.

To solve this problem, in the second part, I will present a hybrid DDN -POMDP method to developing a tractable affective dialogue model for probabilistic frame-based dialogue systems. The proposed method has two new features: (1) being able to deal with a large number of slots & slot values in real-time and (2) being able to take into account some aspects of the user’s affective state in deriving the adaptive dialogue strategies.

We conducted various experiments to evaluate our method and to compare it with approximate POMDP techniques and handcrafted policies. The results of these experiments will be discussed in detail.

This talk is part of the Machine Intelligence Laboratory Speech Seminars series.

This talk is included in these lists:

• CUED Speech Group Seminars
• Cambridge Forum of Science and Humanities
• Cambridge Language Sciences
• Cambridge talks
• Chris Davis' list
• Guy Emerson's list
• Information Engineering Division seminar list
• LR5, Engineering Department, Baker Building
• Machine Intelligence Laboratory Speech Seminars
• PhD related
• Trust & Technology Initiative - interesting events

Note that ex-directory lists are not shown.