Searching structured documents with the enhanced retrieval functionality of free WAIS-sf and SFgate
Proceedings of the Third International World-Wide Web conference on Technology, tools and applications
The complexity of query evaluation in indefinite temporal constraint databases
Selected papers from the international workshop on Uncertainty in databases and deductive systems
Proximal nodes: a model to query document databases by content and structure
ACM Transactions on Information Systems (TOIS)
Predicate rewriting for translating Boolean queries in a heterogeneous information system
ACM Transactions on Information Systems (TOIS)
Achieving scalability and expressiveness in an Internet-scale event notification service
Proceedings of the nineteenth annual ACM symposium on Principles of distributed computing
Expressive retrieval from XML documents
Proceedings of the 24th annual international ACM SIGIR conference on Research and development in information retrieval
Modern Information Retrieval
Looking up data in P2P systems
Communications of the ACM
Boolean Query Mapping Across Heterogeneous Information Sources
IEEE Transactions on Knowledge and Data Engineering
Selected papers from the Third International Workshop WebDB 2000 on The World Wide Web and Databases
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
Data Models and Languages for Agent-Based Textual Information Dissemination
CIA '02 Proceedings of the 6th International Workshop on Cooperative Information Agents VI
Constraint Processing
Definable relations and first-order query languages over strings
Journal of the ACM (JACM)
XIRQL: An XML query language based on information retrieval concepts
ACM Transactions on Information Systems (TOIS)
Texquery: a full-text search extension to xquery
Proceedings of the 13th international conference on World Wide Web
Filtering algorithms for information retrieval models with named attributes and proximity operators
Proceedings of the 27th annual international ACM SIGIR conference on Research and development in information retrieval
Publish/subscribe functionality in IR environments using structured overlay networks
Proceedings of the 28th annual international ACM SIGIR conference on Research and development in information retrieval
LibraRing: an architecture for distributed digital libraries based on DHTs
ECDL'05 Proceedings of the 9th European conference on Research and Advanced Technology for Digital Libraries
EDBT'04 Proceedings of the 2004 international conference on Current Trends in Database Technology
Information filtering and query indexing for an information retrieval model
ACM Transactions on Information Systems (TOIS)
On the use of negation in Boolean IR queries
Information Processing and Management: an International Journal
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We study the complexity of query satisfiability and entailment for the Boolean Information Retrieval models {\cal WP} and {\cal AWP} using techniques from propositional logic and computational complexity. {\cal WP} and {\cal AWP} can be used to represent and query textual information under the Boolean model using the concept of attribute with values of type text, the concept of word, and word proximity constraints. Variations of {\cal WP} and {\cal AWP} are in use in most deployed digital libraries using the Boolean model, text extenders for relational database systems (e.g., Oracle 10g), search engines, and P2P systems for information retrieval and filtering.