SubeventWriter: Iterative Sub-event Sequence Generation with Coherence Controller

The Hong Kong University of Science and Technology
Department of Computer Science and Engineering


MPhil Thesis Defence


Title: "SubeventWriter: Iterative Sub-event Sequence Generation with Coherence
Controller"

By

Mr. Zhaowei WANG


Abstract:

Computational and cognitive studies suggest that coherence among events is
necessary for understanding events. Most event-understanding tasks ignore
coherence among events and, thus, hinder models from understanding events. In
this thesis, we propose a new task of sub-event generation for an unseen
process to evaluate the understanding of the coherence of sub-event actions and
objects. To solve the problem, we design SubeventWriter, a sub-event sequence
generation framework with a coherence controller. Given an unseen process, the
framework can iteratively construct the sub-event sequence by generating one
sub-event at each iteration. We also design a very effective coherence
controller to decode more coherent sub-events. As our extensive experiments and
analysis indicate, SubeventWriter can generate more reliable and meaningful
sub-event sequences for unseen processes.


Date:                   Thursday, 27 July 2023

Time:                   10:00am - 12:00noon

Venue:                  Room 5501
                        lifts 25/26

Committee Members:      Dr. Yangqiu Song (Supervisor)
                        Prof. Raymond Wong (Chairperson)
                        Dr. Long Chen


**** ALL are Welcome ****