www.kennisnet.nl www.ictopschool.net

20 april 2023

Edurep Middle-man in the Dutch educational content chain

Bas Jonkers

Dutch Educational Content Chain

Educational Content Broker

Interoperability between suppliers and users

Suppliers

• Cultural Heritage Institutes–Dutch institute for Sound and Vision

–National Archive

–Musea

• Publishers–Traditional

–Internet-based

• Private collections–Content creation portals

–Electronic Learning Environments

–Educational Repositories

Implementors

• Content Creation Portals–Content Corner–Webmaker

• E-Learning environments–Teletop, –Moodle, –StudieWeb, –Sharepoint, –(N@tschool, It’s Learning)

• Education related mashups–Davindi, –Samen Zoeken, –Onderwijs Media Platform,–Digischool, …

Current partners

sharing 190,000+ metadata records

Making interoperability work

Both technically and semantically

Technical Interoperability

Interfaces

In: OAI PMHOut: SRU/SRW, SRU Drilldown, RSSQuery language: CQL

Fundamental choices

- Open, widely accepted Standards only - Harvesting, no federated Search- No implementor specific features- No supplier specific exclusion rules- Implementors may target specific sets in Edurep

Semantic Interoperability

• Content Zoekprofiel (CZP)Dutch IEEE-LOM application profile agreed upon

by the joint educational partners.

• A growing set of standardized vocabularies (vdex’s)

Educational levels, disciplines, …

Fundamental choices–Suppliers are obliged to conform to CZP

–Implementors can anticipate CZP metadatastructure in

their query building and UI design

Recent enhancements (2007)

• Metadatastructure X to CZP Transformation facility (XSLT)

• Static collection ingest facility (xml-upload) as an alternative to harvesting (initial fase only!)

Architecture

Search Engine

Metadata Transformer

OAI PMH

OAI PMH

SRU/SRW, RSS

Portals e-Learning Env. other Edu-Mashups

Edurep

Content Creation Tools

Repositories

Static sets

CZP

Implementation Support - Edurep Wiki

Implementation Support - Edurep Demonstrator

Edurep User Group

Members

• Suppliers• Implementers• Kennisnet

Main responsibilities

• Evaluation• Roadmap decisions• Pollution control• Enforcing CZP compliance among members

Roadmap 2008 (1)

Support for Outbound OAI PMH

–Allowing implementors to do their domain specific things

–Enabling connection to international networks, such as Learning Resource Exhange (LRE), Ariadne, GLOBE

Roadmap 2008 (2)

Social Metadata Brokering (experimental)

–Collecting and distributing:

•Tags•Ratings•Peer reviews

In relation to more formal metadata

Roadmap 2008 (3)

Automatic Metadata Extraction (experimental)

object + context > CZP

Objecttypes:

–Text–Video

Open source software components

• Search Engine + harvester:

–Meresco (www.meresco.org)

• Metadata storage + oai provider:

–Fedora (www.fedora.info)–Proai (proai.sourceforge.org)

• Metadata transformer

–Future Kennisnet OS-component (workflow requires more fine-tuning)