Supporting the learning process through Knowledge Based Systems

• Petros Belsis (Aegean Univ., TEI of Athens ) pbelsis@aegean.gr

• Dr. Ioannis Chalaris (TEI of Athens) ixalaris@teiath.gr • Apostolos Malatras (Univ. of Surrey, London)• Ioannis Dracopoulos (Athens Univ. of Economics &

Business, Ilyda Corp. )

Introduction

• Aims• Problem statement

– Knowledge reusability– Explicit knowledge reuse (ex. Docs)– Tacit knowledge exploitation (ex. Experienced

people’s opinions)

• What is knowledge?Data InformationKnowledge

• Questions to be answered– Where is knowledge located?– How can it be better exploited through

technology means?

• Benefits from Knowledge Based Systems (Skyrme at el., 1997)

• Quick responding to changes• Innovation • Effectiveness

Knowledge Transformation Process (Nonaka, 1994)

Socialization Externalization

Internalization Combination

Tacit Knowledge Explicit Knowledge

Tacit Knowledge

Explicit Knowledge

From

To

Combination Externalization

Internalization

Socialization

Explicitknowledge

Tacitknowledge

Epistemologicaldimension

Individual Group Organization Inter-organization

Ontologicaldimension

Knowledge level

Knowledge Diffusion - Spiral model (Nonaka, 1994)

• Famous case studies (Davenport et al., 2001)– Ernst & Young

– Microsoft

– HP

• Activities concerning knowledge reuse– Personalization: Knowledge sharing through person to

person communication

– Codification: Knowledge capture and storage in repositories

– Discovery: Knowledge extraction from databases or the Internet

A prototype architecture

Workstation

KM Tool

VC++ basedRepository

Management tool

Java BasedAsynchronous

CommunicationTool

JMF BasedSynchronous

Communicationtool

Repository Administration utility

Asynchronous communication application (1)

Asynchronous communication application (2)

A brief overview of JMF

JMF Based Synchronous communication tool (1)

JMF Based Synchronous communication tool (2)

Current – (Recent) Future work

• Enhancing repository administration with advanced search capabilities

• Integrating video streaming to the synchronous capability through distributed video servers