Transparent information systems through gateways, front ends, intermediaries, and interfaces
Journal of the American Society for Information Science
Principles of database and knowledge-base systems, Vol. I
Principles of database and knowledge-base systems, Vol. I
Automatic text processing
Information retrieval: data structures and algorithms
Information retrieval: data structures and algorithms
Common Command Language for Online Interactive Information Retrieval, Z39.58-1992
Common Command Language for Online Interactive Information Retrieval, Z39.58-1992
Predicate Rewriting for Translating Boolean Queries in a Heterogeneous Information System
Predicate Rewriting for Translating Boolean Queries in a Heterogeneous Information System
Boolean Query Mapping Across Heterogeneous Information Sources (Extended Version)
Boolean Query Mapping Across Heterogeneous Information Sources (Extended Version)
A note about the proximity operators in information retrieval
SIGPLAN '73 Proceedings of the 1973 meeting on Programming languages and information retrieval
Object-oriented and database concepts for the design of networked information retrieval systems
CIKM '96 Proceedings of the fifth international conference on Information and knowledge management
STARTS: Stanford proposal for Internet meta-searching
SIGMOD '97 Proceedings of the 1997 ACM SIGMOD international conference on Management of data
Proceedings of the ACM SIGCHI Conference on Human factors in computing systems
Metadata for digital libraries: architecture and design rationale
DL '97 Proceedings of the second ACM international conference on Digital libraries
Evaluating the cost of Boolean query mapping
DL '97 Proceedings of the second ACM international conference on Digital libraries
The digital library integrated task environment (DLITE)
DL '97 Proceedings of the second ACM international conference on Digital libraries
Conjunctive constraint mapping for data translation
Proceedings of the third ACM conference on Digital libraries
Predicate rewriting for translating Boolean queries in a heterogeneous information system
ACM Transactions on Information Systems (TOIS)
Mind your vocabulary: query mapping across heterogeneous information sources
SIGMOD '99 Proceedings of the 1999 ACM SIGMOD international conference on Management of data
Semantic caching via query matching for web sources
Proceedings of the eighth international conference on Information and knowledge management
GlOSS: text-source discovery over the Internet
ACM Transactions on Database Systems (TODS)
Producing Interoperable Queries for Relational and Object-OrientedDatabases
Journal of Intelligent Information Systems
Towards Intelligent Semantic Caching for Web Sources
Journal of Intelligent Information Systems
Ordering and Path Constraints over Semistructured Data
Journal of Intelligent Information Systems
Filtering with Approximate Predicates
VLDB '98 Proceedings of the 24rd International Conference on Very Large Data Bases
Precision in Processing Data from Heterogeneous Resources (Invited Paper)
BNCOD 17 Proceedings of the 17th British National Conferenc on Databases: Advances in Databases
Signature File Methods for Semantic Query Caching
ECDL '98 Proceedings of the Second European Conference on Research and Advanced Technology for Digital Libraries
Information Alert in Distributed Digital Libraries: The Models, Languages, and Architecture of DIAS
ECDL '02 Proceedings of the 6th European Conference on Research and Advanced Technology for Digital Libraries
Approximate Information Filtering on the Semantic Web
KI '02 Proceedings of the 25th Annual German Conference on AI: Advances in Artificial Intelligence
Data Models and Languages for Agent-Based Textual Information Dissemination
CIA '02 Proceedings of the 6th International Workshop on Cooperative Information Agents VI
Exploiting Partially Shared Ontologies for Multi-agent Communication
CIA '02 Proceedings of the 6th International Workshop on Cooperative Information Agents VI
DEXA '99 Proceedings of the 10th International Conference on Database and Expert Systems Applications
Semantic caching of Web queries
The VLDB Journal — The International Journal on Very Large Data Bases
Caching across heterogeneous information sources: an object-based approach
Information processing and technology
Automated discovery of search interfaces on the web
ADC '03 Proceedings of the 14th Australasian database conference - Volume 17
Learning query languages of Web interfaces
Proceedings of the 2004 ACM symposium on Applied computing
Light-weight domain-based form assistant: querying web databases on the fly
VLDB '05 Proceedings of the 31st international conference on Very large data bases
Keyphrase extraction-based query expansion in digital libraries
Proceedings of the 6th ACM/IEEE-CS joint conference on Digital libraries
Logic and Computational Complexity for Boolean Information Retrieval
IEEE Transactions on Knowledge and Data Engineering
Constraint-Based Approach to Semistructured Data
Fundamenta Informaticae - Intelligent Systems
Information filtering and query indexing for an information retrieval model
ACM Transactions on Information Systems (TOIS)
Fuzzy sets in the fight against digital obesity
Fuzzy Sets and Systems
PAKDD'05 Proceedings of the 9th Pacific-Asia conference on Advances in Knowledge Discovery and Data Mining
Improving access to multimedia using multi-source hierarchical meta-data
AMR'05 Proceedings of the Third international conference on Adaptive Multimedia Retrieval: user, context, and feedback
Constraint-Based Approach to Semistructured Data
Fundamenta Informaticae - Intelligent Systems
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Searching over heterogeneous information sources is difficult because of the nonuniform query languages. Our approach is to allow a user to compose Boolean queries in one rich front-end language. For each user query and target source, we transform the user query into a subsuming query that can be supported by the source but that may return extra documents. The results are then processed by a filter query to yield the correct final result. In this paper we introduce the architecture and associated algorithms for generating the supported subsuming queries and filters. We show that generated subsuming queries return a minimal number of documents; we also discuss how minimal cost filters can be obtained. We have implemented prototype versions of these algorithms and demonstrated them on heterogeneous Boolean systems.