Title: WMA
1WMA A Marking-Based Synchronized
Multimedia Tutoring System for English
Composition Studies By Herng-Yow Chen and Kuo-Yu
Liu Presented by Brett Lilley
2Evolution of the Web
- Hypertext
- Document with hyperlinks to other documents
- Content-based
- Hypermedia
- Hypertext with graphics, audio, video
- Time-based
3Problem Statement
- Creation of hypermedia presentations for
- educational use.
- Focus on correcting English Composition
4Creating Hypermedia
- Authoring
- Media Correlation
- Publishing
- Integration
5Better Educational Solution Presentation
Recording
- eClass
- Authoring on the Fly
6Web-Based Multimedia Annotation (WMA) System
- Enable students to submit writing via the Web
- Capture speech instructions
- Capture the navigation events
- Hot Keys
- Mouse Operations
- Ensure synchronized presentation with automatic
navigation features - Enable random access throughout the hypermedia
document
7Inter-Media Relationships
8System Architecture
9(No Transcript)
10Temporal Correlation
- Discrete Media
- Navigation Events
- Continuous Media
- Speech
- Random Access Between the Two
11Spatial Correlation
12Spatial Correlation Free-Form Handwriting
13Spatial Correlation Free-Form Handwriting Problem
14Adaptable Handwriting Presentation
15Spatial Correlation Tele-Pointer
- Discussion Clues
- Capturing/Storing Issues
16Tele-Pointer Movement Interpolation
- Interpolation Smoothing Algorithm
- Number of Interpolated Pointers
- Distance Interval
- Timestamp and Positions
- Time Interval - Crucial
17Content Correlation Undo And Random Access
18Speech-Event Binding
19Undo Facilitation
- Timestamps of events do not match speech stream
timestamps - Recording is contiguous cannot delete
on-the-fly - Delete during speech-event binding
20Experimental ResultsClustering Speech Turns
21Experimental Results Random Visual Event Access
22Experimental ResultsUndo Functionality
- Compare Against Manually-Created Speech Segments
- 71 Match Lower than Random Access
23Experimental ResultsTele-Pointer Interpolation
- Interviewed 20 Students
- gt80 ms Decreased Fluidity and Sickness
- 50 ms Used in WMA
24Experimental Results User Study
- When Spring 2006
- Where Computer Science and Information
Engineering at Chi Nan University - Who 2 instructors, 27 Ph.D. students, 25
graduate students
25Survey Results
- Favorable reactions to perceived usefulness of
WMA - Integration of emerging technologies for learning
is attractive to students - Favorable reaction to design and features.
26Pre- and Post-Test Results
27Conclusion
- Overall system evaluation is good for practical
applications - Learners get what they put in
- Improvements can be made by customizing the
Speech-Event Binding process
28Questions???