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ICONS CERIA Contribution Outline

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Distribution of ICONS Processes and Structures. Contribution to Access Algorithms and ... idem. Plan Less to be More Likely to Deliver. not the other way around ... – PowerPoint PPT presentation

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Title: ICONS CERIA Contribution Outline


1
ICONS CERIA ContributionOutline
  • U. Paris 9 Dauphine
  • Witold Litwin

2
Project Goals
  • Main (in terms of man power)
  • WP5 Distributed Content Repository
  • Distribution of ICONS Processes and Structures
  • Contribution to Access Algorithms and Data
    Structures (ICS is the leader)
  • Design of System Architecture for Integration of
    Pre-existing Heterogeneous Information Sources
  • Contributions to WP1-WP8

3
Project Deliverables
  • Input to other teams in charge of WPi
  • Milestone Technical Reports
  • Etc (see the contract)

4
Project Stuff
  • 1 Senior Researchers
  • 2 Researchers (Prof. Ph. D. student)
  • unlisted participants
  • junior students

5
Technical basis of our input
  • Scalable Distributed Data Structures (SDDSs)
  • technology now also vaguely called NOW, P2P, Grid
    Computing
  • Theory
  • Various algorithms for scalable data partitioning
  • hash LH schemes
  • range RP schemes
  • k-d kRP
  • high-availability LHrs
  • SDDS-2000 prototype

more at ceria.dauphine.fr
6
Research Directions to be investigated for ICONS
  • Theoretical identification of schemes suitable
    for project goal
  • Study of SDDS-2000 as storage and distributed
    processing service for ICONSs upper levels
  • including on the Web
  • Globus services ?
  • RAM oriented
  • including RAM DBMS servers/mediators (AMOS-2,
    Timesten)

more at ceria.dauphine.fr
7
Technical basis of our input
  • Multidatabase System Design
  • Multidatabase Architecture
  • Multidatabase Language
  • MSQL
  • OSQL
  • object oriented (with Chomicki)

more at ceria.dauphine.fr
8
Research Directions to be investigated for ICONS
  • Multidatabase Architecture for Knowledge
    Management
  • general, Mariposa, OO
  • Application of Multidatabase Language Features to
    XML
  • known MSQL functions
  • elementary queries
  • multiple queries (higher-order predicate
    calculus)
  • MDB bibliographic systems now use such functions
    widely
  • meta-search engines also
  • New functions ?
  • Implementation Issues
  • multi-relational algebra (with Grant, Sellis and
    Roussopoulos)
  • Objectlog (with T. Risch)
  • OSQL
  • OO-specific MDB mappings

more at ceria.dauphine.fr
9
Concurrent Analysis (why these technics ?)
  • New technology
  • mature at research level
  • made in Europe
  • although patents are US (HPL IBM)
  • Established practical interest
  • Buzz around concepts of scalability, P2P, mdb
    access, high-availability, distributed RAM
    processing
  • Buzz around Trouble Ahead (Risk factors)
  • Research may succeed or (partly) fail

10
ICONS Specific Needs
  • No known work on Scalable Distributed Knowledge
    Management
  • Interactions with other teams
  • Research teams
  • Development folks
  • ICONS application of SDDS-2000
  • Freely available at CERIA site
  • had dozens of downloads without major complaints
  • except for known limitations
  • no duplicates, record size lt 8K
  • Can be autonomously applied by partners

11
Our Rules of Thumb
  • Simple Things are Complex
  • especially to realize
  • Complex Things are Unfeasible
  • idem
  • Plan Less to be More Likely to Deliver
  • not the other way around
  • You Plan Only What You Know About
  • Your Time Gets Unpredictably Eaten by what you do
    not know while planning
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