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This page lists tools for implementers of OLAC repositories.
OLAC Metadata in XML
The latest dump of all OLAC metadata records is available in XML
format, compressed using gzip:
ListRecords.xml.gz
OLAC Metadata Schema Version 1.0
olac.xsd - OLAC Metadata Schema 1.0
olac.xml - Example OLAC document
olac.dtd - OLAC DTD
Free-standing OLAC Metadata
- check validity and display a single OLAC record
OLAC Metadata - Human readable
format definition
Recommended Metadata Extensions
- Vocabularies for language resource description
METADATA
- Discussion list for OLAC Metadata
OLAC metadata can be stored in a relational database.
Here is the schema used by all OLAC services:
olac_schema.sql.
Data Providers
How to Become an OLAC Data Provider
Validate/Register an OLAC Data Provider
OAI Tools
OLAC Static Repositories:
OLAC repositories can be stored in a single XML file.
OLACA, the OLAC Aggregator, maps this to OAI_DC for OAI harvesters.
Static Repository Gateway
Example static repositories
OLAC Service Providers
Anyone can set up a service provider which harvests OLAC archives and
provides some useful service, such as cross-archive searching. Service
providers may give added value for a particular subdomain, e.g. just
harvesting lexicons, or just harvesting Asian language resources.
The OLAC harvester is open source code which harvests all OLAC archives
and stores the records in a MySQL database. Add a useful web interface
to create a new OLAC service provider. If you don't want to bother
harvesting dozens of archives, you can harvest a single OLAC archive,
the OLAC Aggregator, which contains the union of all other OLAC
archives.
Software
for harvester and aggregator
Browse
the Subversion repository
OLAC Aggregator (OLACA)
Register an OLAC Service Provider
View registered OLAC Service Providers
Simple Service provider on OLAC site
Repository Explorer
The repository explorer
is a very convenient way to test out your data provider.
There is also a service to
test
the conformance of a repository.
NB. Xerces validation of metadata records involving the dcterms
namespace currently fails. Use the XSV validator in the
repository explorer instead.
Web Crawler Gateway
OLAC provides a set of static pages containing up-to-date records from
all OLAC archives. Web crawlers can index these pages, allowing end-users
to discover OLAC records using conventional web search. This software is
adapted from the OAI web crawler gateway.
OLAC web crawler gateway
OAI web crawler gateway
Kepler
Kepler is a system for individuals to self-archive their resources.
Kepler includes support for OLAC metadata.
Kepler system
Kepler OLAC support
BibTeX to OLAC Converter
BibTeX2OLAC is a conversion library which creates an OLAC Static Repository from
a BibTeX data source.
Download BibTeX2OLAC
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Simple search for OLAC records
Enter a single search term, to be matched against any OLAC field:
Look up an OLAC item
Enter the OAI identifier for a record in any OLAC archive:
List records from an OLAC archive
Enter the OAI identifier for any OLAC archive (submit a blank query to
see a list of archives).
Metadata usage survey
Look at the way OLAC repositories use any of the OLAC and DC metadata
elements.
usage survey
OLAC-Implementers Mailing List
OLAC-Implementers is an unmoderated list for technical discussions
concerning the implementation of OLAC repositories
(LIST ARCHIVES).
OAI and DCMI Documents
OLAC is based on the
Open Archives Initiative
and the Dublin Core Metadata Initiative.
Several OAI and DCMI documents are relevant to OLAC:
Exposing
and Harvesting Metadata Using the
OAI Metadata Harvesting Protocol: A Tutorial
OAI
Protocol for Metadata Harvesting
The
OAI: Building a low-barrier interoperability framework
Dublin Core Element Set
More
OAI documents...
Help Develop OLAC Tools
OLAC is a community-based project and we would like to hear from
any tool developers who have skills to donate. Here are some
project ideas:
New services: download the OLAC suite, harvest OLAC metadata,
and provide a new service to the language resources community.
To learn more, please contact:
olac-admin@language-archives.org
Useful Resources
OLAC Logo
Please make use of the OLAC Logo on your
site, and link it to www.language-archives.org.
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