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Topic modeling for mediated access to very large document collections

Gheorghe Muresan, David J. Harper
2004 Journal of the American Society for Information Science and Technology  
We propose system-mediated information access as a solution for users' well-documented inability to formulate good queries.  ...  Based on the user's selection of relevant "exemplary" documents and clusters from this source collection, the system builds a language model of her information need.  ...  The Interaction Model Overview of the Model System-based mediated information access refers to the system assisting the user in investigating a domain of interest, in exploring and refining an information  ... 
doi:10.1002/asi.20034 fatcat:uhumm5m6jzeevae5x34trjwuqy

Access-control language for multidomain environments

J.B.D. Joshi
2004 IEEE Internet Computing  
In addition to allowing specification of RBAC policies and facilitating specification of timing constraints on roles and access requirements, X-RBAC provides a framework for specifying mediation policies  ...  X-RBAC is based on an extension of the widely accepted US National Institute of Standards and Technology role-based access-control (RBAC) model.  ...  A user with access privileges to a cluster also has access to all schemas and instance documents belonging to the cluster. Similar semantics apply to schema and their elements and instances.  ... 
doi:10.1109/mic.2004.53 fatcat:7pnrh5teunadhfe4m3b56mbpru

Query processing in multistore systems: an overview

Carlyna Bondiombouy, Patrick Valduriez
2016 International Journal of Cloud Computing  
Then, we describe and analyse some representative multistore systems, based on their architecture, data model, query languages and query processing techniques.  ...  Finally, in Section 4, we analyze the three kinds of multistore systems, based on their architecture, data model, query languages and query processing techniques.  ...  Tightly-coupled systems trade autonomy for performance, typically in a shared-nothing cluster, so that data stores can only be accessed through the multistore system, directly through their local language  ... 
doi:10.1504/ijcc.2016.080903 fatcat:etteedwysbcyfidbaeh7x2lrne

Query processing in multistore systems: an overview

Carlyna Bondiombouy, Patrick Valduriez
2016 International Journal of Cloud Computing  
Then, we describe and analyse some representative multistore systems, based on their architecture, data model, query languages and query processing techniques.  ...  Finally, in Section 4, we analyze the three kinds of multistore systems, based on their architecture, data model, query languages and query processing techniques.  ...  Tightly-coupled systems trade autonomy for performance, typically in a shared-nothing cluster, so that data stores can only be accessed through the multistore system, directly through their local language  ... 
doi:10.1504/ijcc.2016.10001884 fatcat:jpuixv6mxzhmdkuqrmqbgbbl24

Collaborative repositories: An organisational and technological response to current challenges in specialised knowledge communication?

Morten Pilegaard
2009 Revue Française de Linguistique Appliquée  
sectors which technologically have been fused into one collective 'knowledge cluster' and it discusses the opportunities for research and business that spring from fusion of language and health technologies  ...  /2020 12:31 -© Pub. linguistiques Rev. franç. de linguistique appliquée, 2009, XIV-2 (57-71) Abstract: This paper presents concepts and systems for multilingual terminological and textual knowledge codification  ...  Morten Pilegaard facilitate specialised knowledge communication in general and may raise translation productivity and quality in particular.  ... 
doi:10.3917/rfla.142.0057 fatcat:mcvoer3fxvgg7mlfwknp4isoby

XML-based Components for Federating Multiple Heterogeneous Data Sources [chapter]

Georges Gardarin, Fei Sha, Tram Dang Ngoc
1999 Lecture Notes in Computer Science  
This paper gives an overview of the XMLMedia system, a federated database system mediator using XML as federating model, built in the Esprit Project MIRO-Web.  ...  The system is composed of four main components: a wrapper generator using rule-based scripting to produce XML data from various source formats, a mediator querying and integrating relational and XML sources  ...  Acknowledgments We would like to thank Peter Fankhauser, Dana Florescu, Henri Laude and Patrick Valduriez for helpful discussions, particularly in the context of the MIRO-Web project.  ... 
doi:10.1007/3-540-47866-3_34 fatcat:jalsfvarnzaxfj2atkxeewuvnu

A Reference Architecture for Sensor Networks Integration and Management [chapter]

Valentina Casola, Andrea Gaglione, Antonino Mazzeo
2009 Lecture Notes in Computer Science  
We propose the architectural and data model of the SeNsIM framework and provide a method to describe sensor systems using XML as modeling language in order to facilitate sharing of structured data across  ...  Distributed applications require to collect information from a lot of different sensor systems, retrieved data are usually heterogeneous from many points of view and they need to be integrated to cooperate  ...  It provides a mechanism to describe and model sensor systems using ESPml, an XML-based language, by which information regarding the sensor deployment can be specified.  ... 
doi:10.1007/978-3-642-02903-5_16 fatcat:nyyphitp7rh3tghyy3f36x635m

The Drug Ontology Project for Elsevier - An RDF Architecture Enabling Thesaurus-Driven Data Integration

Jeen Broekstra, Christiaan Fluit, Arjohn Kampman, Frank van Harmelen, Heiner Stuckenschmidt, Ravinder Bhogal, A. Scerri, Anita de Waard, Erik M. van Mulligen
2004 The Web Conference  
The DOPE project (Drug Ontology Project for Elsevier) is driven by the need to access multiple information sources through a single interface.  ...  In this paper, we describe how DOPE allows thesaurus-driven access to heterogeneous and distributed data, based on the RDF data model.  ...  Acknowledgements We thank Jan van Buel and Ian Crowlesmith for helping us understand the intricacies of EMTREE. This work was funded by the Elsevier Advanced Technology Group.  ... 
dblp:conf/www/BroekstraFKHSBSWM04 fatcat:sosopwubbvfyvknciszwmqhzta

Integrating multimedia archives: the architecture and the content layer

M. Wallace, T. Athanasiadis, Y. Avrithis, A.N. Delopoulos, S. Kollias
2006 IEEE transactions on systems, man and cybernetics. Part A. Systems and humans  
This paper describes a mediator system that achieves architectural integration through an extended three-tier architecture and content integration through semantic modeling.  ...  Still, the development of single points of access, providing common and uniform access to their data, despite the efforts and accomplishments of standardization organizations, has remained an open issue  ...  Akrivas as part of his work in the FAETHON project and his Ph.D. at the Image, Video and Multimedia Systems Laboratory of the National Technical University Of Athens (NTUA) under the supervision of Prof  ... 
doi:10.1109/tsmca.2005.859184 fatcat:yargdnddtbasflikqk2ftpctpy

Exploring large document repositories with RDF technology: the DOPE project

H. Stuckenschmidt, F. van Harmelen, A. de Waard, T. Scerri, R. Bhogal, J. van Buel, I. Crowlesmith, C. Fluit, A. Kampman, J. Broekstra, E. van Mulligen
2004 IEEE Intelligent Systems  
Also, mental models and keywords for accessing data generally diverge between subject areas and communities; hence, many different ontologies have emerged.  ...  Thesaurus-based information access Thesauri have proven to be essential for effective information access.  ...  Aduna developed the system under its previous name, Aidministrator BV.  ... 
doi:10.1109/mis.2004.9 fatcat:jgkngzjyjbhjllkancmsdmwpbu

INCOME/STAR: Facing the Challenges for Cooperative Information System Development Environments [chapter]

Andreas Oberweis, Wolffried Stucky, Gabriele Zimmermann
1996 Distributed Information Systems in Business  
Then, ProMISE -an evolutionary process model for information system development -is surveyed.  ...  Further new concepts have been developed for entity and relationship clustering to support a stepwise top-down approach for entity/relationship based object modeling.  ...  of existing computer-mediated communication systems.  ... 
doi:10.1007/978-3-642-80216-4_2 fatcat:drff4d2a7bfell5j2yefa7dv7u

Web User Profile Using XUL and Information Retrieval Techniques

Dan MUNTEANU
2008 Analele Universităţii "Dunărea de Jos" Galaţi: Fascicula III, Electrotehnică, Electronică, Automatică, Informatică  
This paper presents the importance of user profile in information retrieval, information filtering and recommender systems using explicit and implicit feedback.  ...  Also an algorithm for creating and updating the user profile and keeping track of a fixed number k of subjects of interest is presented.  ...  The components of the Information Retrieval System are: -user, with goals, problem; -information resource, with information objects selected, organized and represented; -mediator, who helps to support  ... 
doaj:240e3c5d11b24a14a14e72696f24072e fatcat:4t62nokzdbabtllfbk276n22ya

Bio-Broker: a tool for integration of biological data sources and data analysis tools

J. F. Aldana, M. Roldán-Castro, I. Navas, M. M. Roldán-García, M. Hidalgo-Conde, O. Trelles
2006 Software, Practice & Experience  
XML [30] is itself a standard format for the representation, interchange and validation of data and, together with the XQuery query language [31] and the XML Schema [32], forms a complete data model for  ...  In this work we present an architecture for XML-based mediator systems and a framework for helping systems developers in the construction of mediator-services for the integration of heterogeneous data  ...  We thank the reviewers for their comments and help towards the improvement of the paper.  ... 
doi:10.1002/spe.733 fatcat:timjit5npnbxxovsv6qhh2w6wm

Integrating knowledge on the Web

A. Tiwana, R. Balasubramaniam
2001 IEEE Internet Computing  
The Web provides a ubiquitous medium for seamlessly integrating distributed applications, formats, and content, making it well suited for enterprise knowledge management.  ...  Office of Naval Research, and the Department of Defense DAU EARP project.  ...  A middleware layer allows efficient query processing and data access. In contrast, the Hermes 4 project develops a general, declarative language for defining a mediator.  ... 
doi:10.1109/4236.935173 fatcat:wibwu3uuz5hhvgxt3pfc4riloy

An XML-Based Interorganizational Knowledge Mediation Scheme to Support B2B Solutions [chapter]

S. Castano, V. De Antonellis, S. De Capitani di Vimercati
2003 IFIP Advances in Information and Communication Technology  
The proposed IKMS is a set of mediated descriptions of exchange information at the global level, defined as global X-classes, and relies on a set of techniques for building such global X-classes.  ...  We propose an Interorganizational Knowledge Mediation Scheme (IKMS) acting as an information infrastructure for B2B solutions for aggregating exchange information supplied by the companies participating  ...  The IKMS provides a single point of access to information within and among companies and allows broad access to both structured and unstructured information underlying the global X-classes (e.g., databases  ... 
doi:10.1007/978-0-387-35658-7_8 fatcat:74l5gl2ijrdqhjezy4imkpbtou
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