Status of PhysNet and SINN

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Status of PhysNet and SINN
SINN01 - First International Technical
Workshop of the project SINN - Search-Engine-Netwo
rk in the International Naturalscience Network

• Michael Hohlfeld
• Thomas Severiens

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Overview

• PhysNet services
• Some statistics
• The PhysNet-Team
• Mirrors of PhysNet
• distributed systems
• techniques, initiatives and requirements
• Project SINN

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PhysDep

• lists of links to physics departments,
  institutions and societies world wide
• Harvest based search engine
• 2350 links in 90 countries

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PhysDoc

• lists of links to documents sources of
  distributed physics institutions
• 1400 links in 41 countries
• complemented by a special search engine
• Quick-Search without ranking (40.000 documents)
• Search across PhysDoc and MPRESS (with ranking)
  
• (together nearly 100.000 documents)
• Search in parts of PhysDoc, arXiv and IoPP
• (together 140.000 documents - 1.000 from
  PhysDoc)

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Other Services of PhysNet

• Journals
• lists of links to related refereed journals which
  are freely available on the web (53 Links)
• list of link to EPS Recognized Journals (60
  Links)
• Conferences
• collection of related web servers (no own
  calendar)
• PhysJobs
• list of links to various related job sites (60
  Links)
• Harvest based search engine

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Other Services of PhysNet

• Education
• online educational resources for physics (177
  links)
• Links to other resources
• further sources of physics information
• information services of other learned fields
• nearly 50 links
• Services
• tools concerning metadata (e.g. MyMetaMaker to
  enrich documents with Dublin-Core MetaData)

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Usage of PhysNet

• approx. 800 requests per day

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The PhysNet-Team

• PhysNet is under the auspices of the European
  Physical Society (EPS) and several national
  societies
• The Australian Institute of Physics (AIP)
• Deutsche Physikalische Gesellschaft (DPG)
• National Committee for Physics of the Royal Irish
  Academy
• Irish branch of the Institute of Physics
• Société Française de Physique

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The PhysNet-Team

• Regional Subsystems maintained under their own
  responsibility
• India Sutapa Ranjan (Institute for Plasma
  Research, Gujarat, India)
• Hungary Kati Szalay (KFKI, Hungary)
• Poland Zygmunt Ajduk (Faculty of Physics,
  University of Warsaw)
• Ireland Sara McMurry (Trinity College Dublin,
  Department of Physics)
• Denmark Ole H. Nielsen (Center for atomic-scale
  materials physics)
• Australia, New-Zealand and Oceania Pal Fekete
  (Australia)
• France Ahmed Mahboub (EDP Sciences)

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The PhysNet-Charter

• EPS has set up a Charter to open PhysNet
• for national and international physical societies
  and organisations
• for physics institutions and departments
• for individual scientists
• service providers
• Principles, organization and structure of PhysNet

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Signed the PhysNet-Charter

• Institute for Plasma Research, India
• Research Institute for Particle and Nuclear
  Research (KFKI), Hungary
• Trinity College Dublin, Department of Physics,
  Ireland
• Swedish Institute of Space Physics
• United Physical Society of the Russian Federation
• Ukrainian Physical Society
• Belarussian Physical Society
• Polish Physical Society
• Institute of Physics, UK
• Croatian Physical Society
• Physics Scientific Section, Union of Czech
  Mathematicians and Physicists

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Mirrors of PhysNet

• nine mirrors of the PhysNet-sites
• European Physical Society (EPS), Lausanne, Swiss
• Physics Department of Virginia Tech, USA
• Physics Department of the University of Bayreuth,
  Germany
• eprints.org, UK
• Russian Academy of Science, Chernogolovka
• CCSD-CNRS, Lyon, France
• Institute for Plasma Research, Gujarat, India
• NIKHEF, Amsterdam, The Netherlands
• and of course at ISN Oldenburg, Germany

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PhysNet Distributed Services

• Collection of distributed content
• Content-Providers keep all their (copy)rights
• are responsible for maintaining the content
• Separation of Content and Layout
• Oldenburg runs the machinery
• well documented
• system independent programming
• Mirroring of whole layout, content, machinery

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Distributed System
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Distributed System

• Distributed Content
• Distributed Programming
• Distributed Workforce

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SINN Distributed Search-Engines

• Techniques
• Content Routing
• Query Routing
• ???

• Initiatives
• W3C XML Query
• IETF DASL/DAV
• OAi OAPMH

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IETF DASL (webdav)

• WWW Distributed Authoring and Versioning
• extension of HTTP to enable remote collaborative
  authoring of resources
• RFC 2518 (first results)
• Ordered collection (non commutative)
• Referential Binding (containment)

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W3C XML Query (often XQuery)

• WG started 1998 with workshop
• 98 participants with 66 positions
• Requirements published Jan 2000
• Currently
• 60 members in WG
• Drafts every 3 months
• Usage Scenarios
• Revised Requirements Jul 2000
• Work on Details...

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Requirements (in selection)

• Definition independent of any protocol
• open to updates
• must support real and virtual documents
• must support collection of documents
• must support XML NS
• must support datatypes from XML Schema
• must support internationalization
• must be able to provide access to information
  derived from query environment

many thanks to Mark Needleman
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Usage Scenarios (in selection)

• XML Document search and management
• XML processing from DBMS
• Integration of Multiple XML Sources
• Filtering Streams
• Collection - Collection Communication
• ...

many thanks to Mark Needleman
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Usage Cases (in selection)

• Access to Relational Databases
• Text Retrieval
• Usage of XML NS
• Use of References and IDREF
• Preservation of Hierarchy and Sequence
• Queries based on Document Structure
• Distributed Databases

many thanks to Mark Needleman
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Liaisons

• DOM
• XPointer
• IETF DASL XQ easily incorporated into DASL
• Z39.50 Decision made not to do this! - TOOOOO
  Conservative Protocol - should be restructured
  on basis of XQ

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SINN

• Supported by DFN e.V.
• Development and implementation of techniques for
  Network of Search-Engines
• Close view (work!) on international activities
• PhysNet Harvest as testbed