Generic Interoperability Framework
Sergey Melnik, Digital
Libraries Project, Database Group,
The new release of GINF is under preparation, stay tuned!
New features include:
Find out more about the upcoming features in the technical report (Dec 01).
- Updated RDF parser (SiRPAC) capable of reading data from stream
(can handle very large data sets like the Open Directory) prerelease available for download!
- GINF has been coupled with the SiLRI interence
engine (thanks to Stefan Decker)
- SQL database interface for storing and accessing RDF models (see the discussion on Storing RDF in relational databases)
- Declarative mediation environment: support for a set of
declarative languages for data conversion and protocol translation
will be included in the next distribution.
Note that the information below is somewhat outdated.
The Generic Interoperability Framework (GINF) has been developed to facilitate
integration of heterogeneous components. One of the main principles it
employs is the generic representation of protocols, languages, data and
interface descriptions. The current implementation of the framework is
based on RDF. The implementation of GINF provides semantic-oriented middleware
for application development and integration. GINF middleware allows creating
open and highly extensible client/server applications. It is available
Overview (very abstract)
GINF middleware (description of the current
implementation, under construction)
RDF schema implementation in GINF
Application to Digital Libraries. Examples
of XML serialization of RDF models in the "Application" document.
The Resource Description Framework (RDF) homepage
- A set-theoretical model for RDF
GINF middleware is highly experimental, interfaces are subject to evolution.
It is still not stable enough for broad usage, therefore the documentation
provided is sketchy. Look at the sources for more information.
Currently, its usability is being evaluated using the following Stanford
Digital Library testbed applications:
WebBase Streamer: Stanford WebBase
stores a significant part of the WWW in fulltext. Making this data available
for data miners is a topic of active research. We're designing and testing
GINF-based interfaces for streaming and multicasting the collected Web
Digital Library search: we consider how the concepts and interactions of
protocol can be modeled within GINF.
Protocol / interface specifications using finite state automata (FSM):
we design a vocabulary for machine-readable generalized FSM specifications
that can be used to automatically generate components conformant to the
protocol/interface. We also consider automatic protocol translations.
The Java library includes following features:
Please keep in mind that the interfaces and the HTTP mapping are still
very experimental and are subject to changes.
RDF parser: a modified version of SiRPAC
using XML parser AElfred
RDF model interface
RDF schema validation
HTTP protocol mapping [TCP/IP temporarily unavailable]
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by the
Free Software Foundation.
The javadoc-generated documentation
and installation instructions are available
online, but are is also included in the distribution. More comprehensive
documentation is in preparation (check out GINF
This release (July 13, 1999) contains a number of bugfixes and a new
demo application (search server and client from the demo
(307K) or ginf-1.1a.tar.gz (190K)
Have a look at current issues.
Please send comments, bug reports and suggestions to firstname.lastname@example.org
Schemas / ontologies:
(Please not that the schemas below are still under construction. HTML descriptions
of some of the schemas are still not available)
Live wire to a search server implementation.
The data on which the server operates.
Example of a client interface to the server. This is
a signed applet so you have to import a certificate
to run it. Runs with Netscape Communicator only.
Example of a canonical wrapper interface for
a real-time wind condition service
in the Bay Area (temporarily offline)
Last change: Dec 02, 1999