Transcript Building Content and Service Oriented Network

Building Content and Service
Oriented Networks
Overview of the TERENA Technical Programme
Yuri Demchenko
Project Development Officer, TERENA
<[email protected]>
http://www.terena.nl/
Building Content and Service Oriented Networks
Presentation Outlines
• TERENA Technical Programme
– Main areas of interests
• Middleware Coordination Activity for Europe
• Content Delivery Networks
• TERENA Portal
– Concept
– Goals
– Development
• Portal Components
– REIS – REsearch Index Service for Europe
– Multimedia Information in Research and Education
• Research Agenda for the TERENA Portal Initiative
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Building Content and Service Oriented Networks
The TERENA Technical Programme
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TERENA - The Trans-European Research and
Education Networking Association
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Association of National Research and Education Networks
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Technical Programme priority areas
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+ Industry associated members
Lower Layers Technologies (IPv6, MPLS, VPNs etc.)
Service Oriented Networks (QoS, DiffServ, Policy based networks)
Videoconferencing and streaming
Content delivery, indexing and searching
Middleware
[Mobility]
Organised through task forces, projects, workshops and an annual
conference
– Task Forces – TF-Stream, TF-LSD, TF-CSIRT, TF-TANT
– Major projects, minor projects, external projects
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Building Content and Service Oriented Networks
Lower Layer Technologies and Service
Oriented Networks
• TF-TANT - Testing and evaluation of lower-layer technologies
– Jointly organised by TERENA and DANTE (QTP)
• November 1998 - October 2000
• Follow-on activity is being discussed
• http://www.terena.nl/task-forces/tf-tant/
– Test programme includes:
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Differentiated Services
Multicast
Traffic and Route Monitoring
MPLS (Multi-Protocol Label Switching)
IPv6
Policy Control
Quality of Service (QoS) and DiffServ
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Building Content and Service Oriented Networks
Content Delivery Networks
• Caching, replication, network storage
• TF-CACHE - http://www.terena.nl/task-forces/tf-cache/
– Recently concluded
• Projects, already finished:
– Extended Cache Statistics
– FTP Mirror Tracker
• Project currently under discussion
– Far Network CDN by Alexei Novikov
• Combining caching, mirror tracking and other technologies
• Collaboration with I2-DSI - http://dsi.internet2.edu/
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Building Content and Service Oriented Networks
Videoconferencing and Streaming
• TF-Stream (Real-Time Multimedia Applications)
http://www.terena.nl/task-forces/tf-stream/
– Audio-video conferencing for European research community, promoting
sources of content, coordinating initiatives, assisting pilot project
• TF Stream Deliverables
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glossary of terms
policy for publishing audio/video in public domain
Web repository of audio/video material
Clearinghouse for multicast monitoring tools
Metadata for audio/video content
Building Content and Service Oriented Networks
Middleware Coordination for Europe
http://www.terena.nl/middleware/
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IETF Middleware Workshop – December 1998
– RFC 2768 - http://www.ietf.org/rfc/rfc2768.txt
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Early Harvest – Internet2 Middleware Workshop – September 1999
– http://middleware.internet2.edu/earlyharvest/
– Draft Best Practices - http://middleware.internet2.edu/best-practices.html
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European Middleware Wokshop - 19-20 June 2000, Leiden
– Organised by the Telematics Institute and TERENA in collaboration with the
Internet2 Middleware Initiative and SURFnet
http://www.terena.nl/middleware/
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Focusing on the middleware components and services for content and service
oriented networks
Building Content and Service Oriented Networks
Middleware Services (according to Internet2 MI)
http://middleware.internet2.edu/overview/
• Core Middleware services
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Identifiers
Authentication
Directories
Authorisation
Certificates and PKI
• Lower middleware - networking-oriented middleware
– Secure multicast
– Bandwidth brokering
• Upper middleware
– Services for ubiquitous computing/persistent presence
– Support for research computing/computer grids
– Support for administrative computing/transactions and messaging
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Building Content and Service Oriented Networks
Middleware concept – Generic services
• Upper layer routing services for
– query routing
– resource/services and policy (description)
– routing of active components
• Resolution services for
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network (and security) policy
resource description/discovery and metadata
service access (AAAArch)
assurance infrastructure (trust relations management/resolution)
• Resource/services management
– access
– services
– resources
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Building Content and Service Oriented Networks
TF-LSD (LDAP Service Deployment)
Directory is an important component of modern concept of service and
content oriented networks
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Started from the LDAP BoF on 12 May 2000 in Amsterdam
Follow-on of the DIRECT project on DIrectory REplication CoordinaTion
TF-LSD main goals and deliverables
– Directory indexing implementations based on the Common Indexing Protocol (CIP)
– Definition of a European wide White Pages index service
– Referencing between X.521 and DC-naming for distribution of knowledge information
between LDAP servers
– Pilot service for publishing, distributing, and validating certificates
• LDAP based storing, distributing and validating certificates
– New evolving directory related standards (DSML, DEN, etc.)
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Building Content and Service Oriented Networks
TERENA Portal Project/Initiative
• Answer to vital needs of R&A community in specific Information
service
• Platform for developing and piloting services for the European
research and academia community
– Showcase for new technology
– Platform for NRN research activities combined with industry
– Combines expertise of TERENA community in indexing/searching,
caching/storage, streaming
• Started with REIS Initiative in June 1999
• Currently being discussed with potential partners from industry
– Opportunity with IBM Internet2 Centre in Zoetermeer / NL
• Work on common research objectives
• Facilities with excellent connectivity (155Mbps to SURFnet)
– Inktomi
– AltaVista
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Building Content and Service Oriented Networks
Portal components
• Research Indexing service
– Indexing/Searching tools/engine
– Cross-Searching Automatic Indexes and human-made Subject Gateways
• Directory services and Metadata
– Automatic Classification
– Metadata Registry
• Video-on-Demand and Streaming (plus hosting)
• Content Replication
• Portal as an access point to all what’s behind the Portal
– All what community uses, develops and needs
– Multilsite and multihome for services
• Collaborative vs Distributed vs Centralised
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Building Content and Service Oriented Networks
The TERENA Portal Concept
•Discovering Authoritative Source of Information
Commercial
Portals
Single
Service Access
Point
Video
Archives
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Subject
Information
Gateways
Institutional
Web Pages
Building Content and Service Oriented Networks
REsearch Indexing Service for Europe (REIS)
• REIS Initiative - started from BoF at TNNC’99
http://www.terena.nl/projects/reis/
– Main goal - to build pilot service for Research and Education community in
Europe
• Specific REIS features
– Comprehensive coverage of Research-on-the-web
– Both searchable and browsable by subject
– Interactive search refinement
• Finding Authoritative Resources - ”Topic Distillation”
– Adaptive crawling and automatic (pre-)classification of gathered data
– Attribute (metadata) searching
• Dublin Core metadata search capability
– Multilinguality and cross-language searching
• Multilingual support in interface
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Building Content and Service Oriented Networks
TERENA Portal goals
• Community oriented Portal
– Binding and assisting specific community
– Virtual community with its Knowledge accumulation and domain specific
resources
– Instant communication and IA / VPP
• Research diversification and knowledge accumulation
• Services/tools to assist Researchers and Educators
– building authorities in new domains
– discovering knowledge/resources in European/worldwide Internet
– R&E Multimedia information
• Cooperation with industry
– to help research community
– to provide feedback and input from research community
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Building Content and Service Oriented Networks
What do people need from Research oriented Portal?
Discussed on the Panel at WebIndexing Workshop in Delft May 2000
• Information in specific research area
– new and diverse areas not covered by existing classification and Subject
Gateways
• (Virtual) Community interaction
– Possibility to talk to expert (become bound into community)
– to communicate with people
– to find colleagues
• Video/audio materials
– personalised experience
• Build personal profiles and exchange of experience and findings
– Shared bookmark - to accumulate highly professional experience
• Access to Open Research area
– Information discovery and expert tools
– Automatic classification and knowledge mining
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Building Content and Service Oriented Networks
TERENA Portal as Community Oriented Portal
• To build successful Portal you need to find/build proper community
– Community membership creates willingness to cooperate in resources and
services creation and development
• Bottom-up vs Top-down approach
• Possibility to communicate between people (community members)
– create cooperative environment
– virtual (point of) presence
• Finding relevant resources in diverse areas
• Starting with specific area and specific services in general concept
• Ask and propose to users
– user needs driven approach
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Building Content and Service Oriented Networks
TERENA Portal Value-Added Services
• Combined with communication between researchers
– to explore common findings
– building virtual community/presence
• Knowledge Accumulation and Dissemination
• Quality Information Resources enabled by “web-of-trust”
• Advertisement from and linkage to the Scientific publishers
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Building Content and Service Oriented Networks
Research oriented vs Commercial Portals Conceptual
• Old Portal receipt
– LSD – Logo-Search-Directory
• New flavors
– myportal service and personal Mail address
– Image search
– Link to e-commerce
• TERENA Portal differences from commercial
– Professional and Educational information
• Community oriented service
• Information consistency
– Limited (professional) communities of trust
• Strong Authentication and Confidence
• Secure real-time communication – video and audio
– Video and Audio
• Lectures, Seminars and Conferences
– Intelligent Agent – like ancient “Librarian”
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Building Content and Service Oriented Networks
Multimedia/Visual Information in Education
and Research
• Conferences video archives vs Conference Proceedings
– Q&A – Parallel sessions – (Parallel conferences)
• Dedicated lectures/seminars – Ad Hoc topics
– Lectures by expert specialists
– Exchange with both teacher and auditorium
• Distance Education and Training
– Courses on demand
– Hands-on and practical lessons (e.g., surgery, fiber cabling, etc.)
– Virtual classroom
• Distinctive features
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Live video/speech
Information humanisation/impersonalisation
Still paper-like information vs train-of-thought
Virtual presence
Building Content and Service Oriented Networks
Visual materials
Cataloguing/Browsing/Searching/Indexing
• Textual description
• Content/background/etc. Indexing/Searching
– Image patterns
• Image layers/Image decomposition
– Video snapshots
• Embedded/linked description?
– Metadata
– MPEG7
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Building Content and Service Oriented Networks
Research and Deployment Problems in TP
• REIS – size of the problem
– 30-50 Mln documents in designated communities for Europe
– Frequent update
• Metadata
– Metadata consistency and trust
– Metadata registry and access
– LDAP Schema for DC
• Multilinguality
– Cross-Language Searching
• Network Access problems
– Different speed of access among TERENA members
– Distributed vs Centralised vs Cooperative Service
– WAP-profile
• Binding community
– Instant communication and Persistent presence
– Authentication and web-of-trust
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Building Content and Service Oriented Networks
Needs and topics for cooperation with industry
• Current situation
– Commercial Search and Indexing services is extending
• Site search service from AltaVista, Google
• Research Index – Lease or Buy
• SE Industry needs trial of new services
• Metadata for R&A trial deployment
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Building Content and Service Oriented Networks
TERENA previous experience in the area
• DESIRE II
– Web Indexing, Directories, Metadata
• Streaming and Video-on-Demand in the frame of TF-STREAM
• LDAP Services Deployment
– LDAP based PKI piloting
• GNRT – Information Resource for the TERENA community
• Caching and Network Storage in the framework of TF-CACHE
• Multilingual Mail Agents Testing – Pilot Project
– Multilingual Applications in WWW/Internet - http://www.terena.nl/multiling/
• CHIC-Pilot on cooperative Indexing
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Building Content and Service Oriented Networks
Where are we going today?
• TERENA organises Workshop on Research oriented Portal for Europe in
early February 2001 – place TBD
– Establish TF-level activity
• Initiate discussion among NRENs on cooperation/coordination issues in
building national R&A Portal services
• Promote use of Video and Streaming services/archives
– Among universities and research institutions and in in knowledge
rich/generating areas
– Maintain Directory of available resources
• First try - http://www.terena.nl/projects/reis/mmis/
– Develop cataloguing/indexing tools for visual/audio information
• Extend searching for cooperative contacts with industry
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Building Content and Service Oriented Networks
Additional Information
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Building Content and Service Oriented Networks
TERENA
the Trans-European Research and Education Networking Association
TERENA membership 2000
• 35 national members
(the
NRENs of 35 countries in and around
Europe)
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3 international members
(CERN, ECMWF, ESA)
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7 associate members
(including industries)
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1 observer
(the European Commission)
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Building Content and Service Oriented Networks
GNRT
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‘2000 Edition’ published in October 1999
New version has been reviewed
To be published on the Web towards the end
of the year
http://www.terena.nl/libr/gnrt/
Translated into
– Croatian
– Slovenian
– Turkish
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Building Content and Service Oriented Networks
Educational Video and Streaming Resources
on the Internet - Europe
• European archive
– FUNET-TV - http://tv.funet.fi/index-en.html
– SURFnet
• Video and Streaming hosting - http://stream.surfnet.nl/
– Live Video broadcast at BELNET - http://sunsite.belnet.be/events/
– University of Namur Educational materials http://www.info.fundp.ac.be/~infonet/coursenligne/
– Israel - http://www.internet-2.org.il/vod.html
• University of Haifa - Weizmann Institute of Science - Ben Gurion University
– More – to be discovered!
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Building Content and Service Oriented Networks
Educational Video and Streaming resources on
the Internet - USA
• Internet2 Video Development Initiative - http://www.vide.net/
• ResearchChannel - http://www.researchchannel.com/
– Collaboration to experiment with high bandwidth modes of delivery and
exchange in educational and research-oriented information
• Multi-University Research Laboratory Seminar Series http://murl.microsoft.com/
• MREN/CIC Digital Video Streaming http://videocharger.mcs.anl.gov/demo.html
• University of Washington - ResearchTV http://www.washington.edu/researchtv/
• EE380 Colloquium at Stanford University Computer Systems Laboratory
- http://www.stanford.edu/class/ee380/
• Berkley Multimedia Research Center http://bmrc.berkeley.edu/index.html
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Building Content and Service Oriented Networks