Esta página contiene algunos enlaces a páginas de proyectos interesantes para el curso de Interoperabilidad.
Información complementaria puede encontrarse en http://meta2.stanford.edu/people/duschka/projects.html
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HERMES: A Heterogeneous Reasoning and Mediator System |
HERMES is a system for semantically
integrating different and possibly heterogeneous information sources and
reasoning systems. This is accomplished by executing programs, called mediators,
written in the HERMES system. Mediators, first proposed by Wiederhold,
are guidelines of how information
from different sources will be combined and integrated. HERMES system is
based on the theory of Hybrid Knowledge Bases, due to Lu, Nerode and Subrahmanian.
In this framework, external information sources are abstracted as
domains which execute certain
functions with pre-specified input and output type. These domains are accessed
in mediators using a logic-based declarative language. This language is
based on Annotated Logics, due to Kifer and Subrahmanian, and it provides
a
powerfull and extensible programming
environment. The system also provides a uniform
environment for the easy addition
of new external sources to existing mediators. The system currently runs
on Sun Sparc stations (under Unix), as well as on the IBM-PC platform under
DOS/Windows 3.1. A graphical user interface has been built on both platforms.
Publicación recomendada>
http://www.cs.umd.edu//projects/hermes/publications/postscripts/tois.ps
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The SIMS Group of Projects at ISI |
The SIMS Group consists of several related research projects in ISI's Intelligent Systems Division that are investigating different aspects of the problem of retrieving and integrating data distributed over multiple heterogeneous information sources. The group began by working with well-structured databases, and has expanded over the years to deal also with more loosely structured text sources and Web pages.
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TSIMMIS |
As an acronym, TSIMMIS stands for
"The Stanford-IBM Manager of Multiple Information Sources." In addition,
TSIMMIS is a Yiddish word for
a stew with "heterogeneous" fruits and vegetables integrated into a surprisingly
tasty whole.
J. Hammer, M. Breunig, H. Garcia-Molina, S. Nestorov, V. Vassalos, R. Yerneni.
"Template-Based Wrappers in the TSIMMIS System". In Proceedings
of the Twenty-Sixth SIGMOD International Conference on
Management of Data, Tucson, Arizona, May 12-15, 1997.
Chen Li, Ramana Yerneni, Vasilis Vassalos, Hector Garcia-Molina, Yannis
Papakonstantinou, Jeffrey Ullman,Murty Valiveti. "Capability Based Mediation
in TSIMMIS". SIGMOD 98 Demo, Seattle, June 1998.
On
Answering Queries in the Presence of Limited Access Patterns
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Stanford Digital Library Technologies |
The Stanford Digital Library Technologies Project was initiated in July as part ofthe Federally funded Digital Library Initiative Phase 2. The goal of this Project is to design and implement the infrastructure and services needed for collaborativelycreating, disseminating, sharing and managing information in a digital library context.
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The Garlic Project |
The goal of Garlic is to enable large-scale multimedia information systems: large scale in that they involve lots of data with multimedia taken as broadly as possible to mean data of many types. We are particularly concerned about situations in which there is enough data of sufficiently specialized types that users have already made decisions about how to manage it, and have stored it in separate repositories that are specifically adapted to data of that type.
VLDB '99: Cost Models DO Matter: Providing Cost Information for Diverse Data Sources in a Federated System (postscript ~284k)
(Encuentran las publicaciones en
la página del proyecto)
The project aims at developing tools for the management of data coming from the World Wide Web. The proposed techniques are based on database technology: Web sites are described using a formal data model; based on the model, we have developed tools and methodologies for wrapping, querying, integrating, designing and implementing Web sites.
S. Grumbach, G. Mecca
In Search of the Lost Schema - In Proceedings
of Intern.
Conference on Database Theory (ICDT'99), 1999(Tema: WRAPPER GENERATION)
Daniela Florescu, Olga Kapitskaia,
Hubert Naacke, Patrick Valduriez, Loiqua Raschid, Antony Tomasic
DISCO is a I³-compliant information
integration system written in Java. It allows the integration of object-oriented
and relational databases. Sources are described using SQL3. Its approach
is similar to multidatabase systems: schema transformations between sources
and the global scheme are stored in multidatabase catalogs.
One highlight of DISCO is that
is tries to handle source failures. If a source is not available at the
time of query execution, a modified query is generated that tries to return
a preliminary result to the user from the results of other sources. So-called
Metawrappers are responsible for providing information about alternative
concepts across source-boundaries.
"A
Data Model and Query Processing Techniques for Scaling Access to Distributed
Heterogeneous Databases in Disco." Tomasic, Anthony and Raschid, Louiqa
and Valduriez, Patrick. Invited paper in the IEEE Transactions
on Computers, special issue on Distributed Computing Systems, 1997.
en http://www.umiacs.umd.edu/labs/CLIP/im.html
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The Miro-Web Project (sucesor de los proyectos IRO-DB y DISCO) |
The MIROWeb Esprit project has developed a unique technology to integrate multiple data sources through an object-relational model with semistructured data types. It addresses the problem of integrating irregular Web sources and regular relational databases through a mediated architecture based on a hybrid model, supporting relational, object and semistructured features.
descripcion del proyecto en http://www.prism.uvsq.fr/~duc/MiroWeb.htm
y en
http://www.darmstadt.gmd.de/oasys/projects/miro/mirowe.html
Knowledge
Based Access to Information on the World Wide Web
Thomas Kirk
Information Manifold Overview (transparencias)
Nota> Sería muy interesante que quien estudiara esta herramienta diseñara una pequeña aplicación para evaluar realmente su desempeño.
ARTíCULOS
SchemasSQL - A language for Interoperation in Relational Multidatabase
Systems
VLDB Conf. 1996 VLDB Conf.
1996
Semantic Integration in Heterogeneous Databases Using Neural Networks.
Wen-Syan Li, Chris Clifton VLDB 1994: 1-12
An Approach to Integration of Web Information Source Search and
Web Information Retrieval
Y. Iizuk, M. Tsunakawa,S.Seo,T.Ikeda
In SAC2000 Como, Italy
nD-SQL: A Multidimensional Language for Interoperability and OLAP
F. Gingras and L.V.S. Lakshmanan
VLDB 98 pp 134- 145.
Cost Models DO Matter: Providing Cost Information for Diverse
Data Sources in a Federated System
Mary Tork Roth, Fatma Özcan
and Laura M. Haas
VLDB99
CHAOS: An Active Security Mediation System (este es sobre seguridad)
David Liu, Kincho
Law and Gio Wiederhold
(14pp)
CAISE 2000,
Junio, Estocolmo.