sTEAM- Towards the next generation of cooperation

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(No Transcript)
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Overview

• What are Topic Maps?
• Graphical Visualizations for Topic Maps
• Establishing Asossiations by graphical means
• XML Tools in Pike

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Topic Map Basics (terms)

• Topics
• Names
• Base
• Sort
• display
• Occurence
• Associations
• Scopes

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Associations

• Each Association has a ltassociation typegt
• Each topic that participates in an association
  plays a role ltassociation role type)
• (both ltassociation typegt, as well as ltassociation
  role typegt are topics themselves)

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The Power of Associations

• Make the Web machine usable
• Allow for better human understanding

"The Semantic Web is an extension of the current
web in which information is given well-defined
meaning, better enabling computers and people to
work in cooperation." -- Tim Berners-Lee, James
Hendler, Ora Lassila
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Comparison Web/Semantic Web
current web recources are interconnected with
(meaningless) links
semantic web typed recources interconnected with
associations
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Synchrone Clients
Clients
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Associations

• A is a B
• A was written by B
• Note Associations are not limited to 11
  relations

B
A
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Non binary associations
Yes
No

• Accordingly special diagram types could be
  supported with templates.

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The Meta Data Problem

• gains
• Better search capabilities
• Support for intelligent agents
• Explicit
• problems
• Authors have to support it
• Even w3c assumes the semantic web will be limited
  to some isles in the (non)semantic web.
• Our approach build an application where the
  metadata is gathered explicitely but without
  additional effort

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graphical visualisation for association types
Topic

• Associations allow to enforce that each topic
  participating in a association have to play
  certain roles ltassociation type rolegt
• The ltAssociation typegt allows the application to
  bind a visual representation to this type.
• color, bordercolor, marker, shape
• arrow type and color

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How to draw a Semantic Map

• Three steps
• Create Topics
• Classify Topics
• Associate Topics
• Because you explicitely state which roles and
  associations are valid in your map, you provide
  the machine-readable data while simply drawing
  your map.

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Current Implementation in Java

• Elaborated API for dealing with Topic Maps (TM4J)
• API for graphical user interfaces
• Shared data toolkit
• RMI

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sTeam 2002
Web Server
LDAP- Server
Annotea
Roxen/ Apache
WebDAV
COAL
pike
sTeam server
sTeam Clients
NNTP
POP3
IRC
communication and document-management-server
COAL
LDAP
Object-repository
sTeam Kernel
Database Interface
libXSL
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sTeam with external Topic Map Server
Web Server
LDAP- Server
Java- RMI
TM4J
Annotea
Roxen/ Apache
WebDAV
COAL
pike
sTeam server
sTeam Clients
NNTP
POP3
IRC
communication and document-management-server
COAL
LDAP
Object-repository
sTeam Kernel
Database Interface
libXSL
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Pike XML Tools

• indices(Parser.XML)
• Result 1 ( / 5 elements /
• "Validating",
• "DOM",
• "NSTree",
• "Simple",
• "Tree"
• )
• Manuals FIXME Document this function

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Alternative Solutions

• Creating a full featured Topic Map API
• Based on XML.Tree ?
• What about DAML, OWL?
• Using the pike-java bridge?
• How?
• Will this allow to use the existing TM4J

Java TM4J
Pike
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• http//www.open-steam.org