Multimodal Analysis of Video Collections: Visual Exploration of Presentation Techniques in TED Talks

MPhil Thesis Defence


Title: "Multimodal Analysis of Video Collections: Visual Exploration of 
Presentation Techniques in TED Talks"

By

Mr. Aoyu WU


Abstract

While much research in the educational field has revealed many 
presentation techniques, they often overlap and are even occasionally 
contradictory. Exploring presentation techniques used in TED Talks could 
provide evidence for a practical guideline. This study aims to explore the 
verbal and non-verbal presentation techniques from a collection of TED 
Talks. However, such analysis is challenging due to the difficulties of 
analyzing multimodal video collections consisted of frame images, text, 
and metadata. In this thesis, we propose a visual analytic system to 
analyze multimodal content in video collections. The system features three 
views at different levels: the Projection view with novel glyphs to 
facilitate cluster analysis regarding presentation styles; the Comparison 
View to present temporal distribution and concurrences of presentation 
techniques and support intra-cluster analysis; and the Video View to 
enable contextualized exploration of a video. We conduct a case study with 
language education experts and university students to provide anecdotal 
evidence about the effectiveness of our approach, and report new findings 
about presentation techniques in TED Talks. Quantitative feedback from a 
user study confirms the usefulness of our visual system for multimodal 
analysis of video collections.


Date:			Monday, 8 July 2019

Time:			4:30pm - 6:30pm

Venue:			Room 3494
 			Lifts 25/26

Committee Members:	Prof. Huamin Qu (Supervisor)
 			Dr. Raymond Wong (Chairperson)
 			Dr. Pedro Sander


**** ALL are Welcome ****