CGL Meeting Agenda

Wednesday, September 20, 1995


Location:
DC 1304
Time:
1:30 PM
Chair:
Glenn Paulley

1. Adoption of the Agenda - additions or deletions

2. Coffee Hour

Coffee hour this week:
Thomas Pflaum
Coffee hour next week:
???

3. Next week's meeting

Date:
September 27, 1995
Location:
DC 1304
Time:
1:30 PM
Chair:
Andrew Park
Technical presentation:
Michael McCool

4. Forthcoming

Chairs:
  1. Thomas Pflaum
  2. Randall Reid
  3. Navid Sadikali
  4. Greg Veres
Tech Presenters:
  1. Andrew Park
  2. Thomas Pflaum
  3. Randall Reid
  4. Navid Sadikali

5. Technical Presentation

Presenter:
Steve Mann
Title:
How to Give a Talk on Computer-Aided Violin Design
Abstract:

I will be present some guidelines on giving talks, giving "Do's" as well as "Don'ts". I will illustrate my points by giving two (very!) short versions of a talk on Computer-Aided Violin Design. The points I cover in my talk are discussed in this WWW page.

6. General Discussion Items

7. Action List

8. Director's Meeting

9. Seminars

Exploratory Database Research at Almaden Research Center: An Overview

Dr. Guy M. Lohman, IBM Almaden Research Center
Date: Friday, September 22, 1995
Time: 3:00 p.m.
Place: Davis Centre Room 1331, University of Waterloo

Abstract:

Will database research in the late 1990s stagnate into small incremental advances on existing technology, or are bold new advances possible? Now that relational databases represent the status quo, how does IBM Almaden Research Center plan to retain its leadership and vigor in this important systems technology?

This talk provides an overview of database research in the Exploratory Database Systems Department at the Almaden Research Center. We are developing database systems with features that will dramatically improve the functionality and performance of tomorrow's DBMSs in a number of ways. Sophisticated type systems (inspired by object-oriented programming languages) and better semantic models for data will incorporate more meaning into the database without sacrificing the advantages of relational technology. DBMSs won't just store large data objects, such as images and voice, but will also model their semantics and relate their contents. Techniques for integrating heterogeneous data will allow DBMSs to become powerful "information brokers" that organize the wealth of machine-readable data that bombards us daily. Triggers and stored procedures will consolidate within the database system more behavior, control, and reasoning capabilities. Applications such as work-flow management, data mining, and data warehousing will exploit these features and require further extensions to DBMS access paths, transaction models, etc. Many of these exciting enhancements have already been incorporated into IBM products such as DB2, or are being prototyped; others are still in the early stages of design.


The Use of a Combined Text/Relational Database System to Support Document Management

Presenter: Kar-Yan Ng, MMath candidate, Department of Computer Science


Date: 22 September 1995
Time: 1:30 p.m.
Place: Davis Centre Room 1304

Abstract:

Currently, documents are typically represented in one of two forms :

  1. a relational data model, where all text contents in a document are represented in relations, each with several attributes, or
  2. a text data model, where documents are represented in plain text form, typically interspersed with tags to capture their various logical, semantic, and presentational features and relationships.

In our research, we studied how to exploit a hybrid text and relational model to support document management. We describe database design trade-offs involving the partitioning of information between the text and relational database components. With an appropriate design, the advantages of both models can be exploited, while the shortcomings of using them individually is diminished.

By investigating the various design trade-offs, we propose a set of guidelines for partitioning data, based on their contents, structure, and anticipated usage. Some of these partitioning criteria have been verified in our prototyping work.


DEPARTMENT OF COMPUTER SCIENCE
UNIVERSITY OF WATERLOO
SEMINAR ACTIVITIES

ARTIFICIAL INTELLIGENCE SEMINAR

                    -Wednesday, September 20, 1995

Eduard  Hovy,  Information  Sciences  Institute  of the
University  of  Southern California, will speak on "The
Multiplexity of Discourse".

TIME:                2:00-3:00 p.m.

ROOM:                DC 1302 *NOTE ROOM CHANGE*

ABSTRACT

Two-year-olds  learn  to  make sentences automatically,
and  master  complex constructions even before they are
six.    But   producing   well-written   and   coherent
multiparagraph  texts  is  something  we  have to learn
consciously,  and  something  that many people have not
mastered even by adulthood.

One reason is that discourse is a multiplex phenomenon:
we  communicate  at  several  levels simultaneously. We
have  to learn how the levels work, how to decide which
level  to  address  at  any  time, how to signal to the
audience  the  articulation of the discourse structure,
and  so  on.   However,  despite  the ubiquitousness of
discourse, we know surprisingly little about its actual
structure  or  the processes of planning and generating
it.

This  talk  briefly  outlines  some  recent work in the
study  of  discourse  structure and then focuses on two
questions:  What  levels  of discourse does one need to
represent?   How  does  one  signal  each  level to the
audience?   The  talk  explores  how  the  semantic and
interpersonal  information give rise to such notions as
Theme,   Topic,   Focus,   Given,  and  New  from  Text
Linguistics    and   Rhetorical   Relation,   Discourse
Intention,  and Rhetorical Structure from Computational
Linguistics.


The Grand Valley Section of the Canadian Information 
Processing Society is pleased to present its first dinner 
meeting of the 1994-95 programme:

Topic: Toxic Waste in your Backyard: can Computer 
       Simulation Help?
Speaker: Dr. P. A. Forsyth, Professor, Department of 
         Computer Science, UW and Director, Institute 
         for Computer Research
Date: Wednesday, 20 September 1995
Time: 4:30 registration and light lunch
      5:30 presentation
Place: Davis Center 1301 and 1302, University of Waterloo
Cost: CIPS members: free
      non-members: $5.00

In the US it is estimated that the cost of cleaning up toxic
waste dumps is between 300 billion and one trillion dollars. 
More locally, Kitchener-Waterloo is the largest municipal 
region in Canada which depends on groundwater. There have been 
several examples in recent years of industrial contamination of 
our water supply.

Computer simulation can be used to design processes to remediate
hazardous waste sites in a safe and cost-effective way. This 
talk will explain the basic principles used to simulate toxic 
waste site remediation, and describe how engineers and scientists
use simulation to help clean up groundwater contamination 
problems. Since simulations typically produce hundreds of megabytes
of data, visualization is a powerful tool used to extract useful 
information from all this data.

An animated visualization of a simulation will be presented, and 
the limitations of current visualization technology will be 
discussed.

If possible, please confirm attendance with John Porr, 
Nichols-Radtke Limited, by voice mail at (519)740-7479 x363, 
by Fax at (519)621-8437, or by email at JohnP@nrl.com as soon 
as possible.

10. Lab Cleanup (until 2:30 or 5 minutes)