Sunday, Half-Day Afternoon Tutorials

James A. Larson,
Intel Architecture Lab

Benefits
You will learn how to specify mixed initiative web-based voice applications using VoiceXML; how to specify common commands that are always available across multiple dialogs; and how to use each of the W3C Speech User Interface Framework Markup. You will be able to access the voice markup languages required to implement your application.

Origins
This tutorial is new for CHI 2001.

Features

• The "root dialog" for switching among voice applications
• Using "barge in" to enable fast navigation by experienced users
• How to deal with multiple values within a single utterance
• Using guard variables for mixed initiative dialogs
• The W3C Speech User Interface Framework and its relationship to VoiceXML 1.0
• The Grammar Markup Language for representing spoken user input
• The Text-to-Speech Markup Language for presenting voiced text to the user
• The Natural Language Semantics markup language for representing the content of user utterances
• Reusable dialogs to promote consistency among voice applications
• Integration of VoiceXML with WAP

Audience
This advanced tutorial is targeted for web designers, who anticipate developing web-based voice sites and voice portals, and human factors practitioners who develop and apply voice dialog guidelines. A general understanding of VoiceXML is recommended.

Presentation
Mini lectures with live demos and small group exercises.

Instructor
Jim Larson is the chair of the W3C Voice Browser Working Group, which recently adopted VoiceXML as the basis for its W3C Speech User Interface Framework. Dr. Larson prototypes speech applications at the Intel Architecture Lab.

Krishna Bharat,
Google, Inc.

Bay-Wei Chang,
Google, Inc.

Benefits
You will learn about the issues in designing interfaces for web search by understanding the technology underlying search engines. You will understand the opportunities and limitations of the web as a medium for information retrieval. You will learn how to design interfaces to give users access to the capabilties of search algorithms.

Origins
This tutorial is new for CHI 2001.

Features

• An introduction to the architecture, algorithms, and processes of modern search engines
• Structure and properties of the world wide web, in particular, attributes that affect the performance and quality of web search
• Search interface design, including client-side tools

Audience
HCI practitioners who are interested in web search technologies and interfaces.

Presentation
Lectures and demonstrations of existing interfaces.

Instructor
Krishna Bharat and Bay-Wei Chang are Senior Research Scientists at Google, Inc. Krishna was previously at DEC/Compaq SRC, where he worked on interfaces and algorithms for web information retrieval. Bay-Wei was previously at Xerox PARC, where his research revolved around user interface issues in web editing, portable document readers, and hyptertext annotations.