Heterogeneous Information Management

10/27/1999


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Table of Contents

Heterogeneous Information Management

Abstract

Section 1

Focus on Information Systems

Industry Needs Information

Data and Knowledge

Knowledge Manifestations

Information Leverage

Current State raises Issues

Digital Earth [Vice President Gore, 1998]

Information overload Data starvation

Components of GI Science

Support for Decision-Making

Issue: Link from resources to consumer?

Transforming Data to Information

Change in Supply vs Demand

Definition*

Section 2

Functional Layer

Function of Mediation

Making data relevant

Functions inside Mediation

Dealing With Heterogeneity

Mediation on the WWW

Wrappers

Selection for Quality

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Caching in Mediators

Articulation: Intersection

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Result modes for ranking

Ranking

Summarize to Reduce Load

Delivery to Customer

Flow in mediation

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Section 3

Evolution of mediation

Central Solutions do not Scale

Partition mediation by domain

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Allocation Flexibility

Interfaces

Current Technologies

Middleware

KQML KNOWLEDGE QUERY & MANIPULATION LANGUAGE

Section 4

Maintenance is good for you

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Systems with Mediators

Growth through Reuse

Linear O(n) Cost of Growth-- now O(n2)

A mediator is not just static software: Knowledge ages

Roles

Assigning maintenance responsibility

Section 5

Mediator Design Principle

I3 Vision [Dave Gunning, ARPA]

Section 6

Opportunities in Engineering

EON application [Mark Musen, SMI]

Dynamic Categorization [Wanda Pratt, SMI]

DynaCat: System Architecture

Output of DynaCat

Categorizer

Control Valve Sizing, Future

CommerceNet

F-22 IWSDB Phase 6

Projects at Stanford DB group

The TSIMMIS Project Ramana Yerneni, Yannis Papakonstantinou, ...

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E-Commerce in the Digital Library

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Environmental Restoration at INEL Undoing 50 years of messes .

Mediation to Implement Feedback in Training David Maluf, Priya Panchapagesan, Ted Linden

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MIFT . Result .

Digital Libraries

Simulation services

SimQL: Simulation Access Service

Section (7) 8

Status of Mediation Technology

TSIMMIS Status

Coverage of Current DARPA I3 Efforts

E-money

Section 9

Research Topics

Getting there: Available Technology/Science

Fat versus thin mediators

IFIP note

Establishing Ontologies .

Large Ontologies?

Domains and Consistency .

An Ontology Algebra

Sample Operation: INTERSECTION

INTERSECTION support

Sample Intersections

Other Basic Operations

Features of an algebra

New Information Systems to support Decision Making

The Time is NOW

Section 10

Domain Specialization

New Role for Consultants

Industrial Needs Served

Vision for Large Information Systems

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The end

Author: Gio Wiederhold

Email: Gio@db.stanford.edu

Home Page: www-db.stanford.edu/people/gio.html

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