Implementing imprecision in information systems
Information Sciences: an International Journal - Special issue on expert systems
Optimal aggregation algorithms for middleware
PODS '01 Proceedings of the twentieth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
The complexity of relational query languages (Extended Abstract)
STOC '82 Proceedings of the fourteenth annual ACM symposium on Theory of computing
Scalable querying services over fuzzy ontologies
Proceedings of the 17th international conference on World Wide Web
A survey of top-k query processing techniques in relational database systems
ACM Computing Surveys (CSUR)
Vague Knowledge Bases for Matchmaking in P2P E-Marketplaces
ESWC '07 Proceedings of the 4th European conference on The Semantic Web: Research and Applications
Towards Vague Query Answering in Logic Programming for Logic-Based Information Retrieval
IFSA '07 Proceedings of the 12th international Fuzzy Systems Association world congress on Foundations of Fuzzy Logic and Soft Computing
Top-k Retrieval in Description Logic Programs Under Vagueness for the Semantic Web
SUM '07 Proceedings of the 1st international conference on Scalable Uncertainty Management
Fuzzy Bilateral Matchmaking in e-Marketplaces
KES '08 Proceedings of the 12th international conference on Knowledge-Based Intelligent Information and Engineering Systems, Part III
Fuzzy matchmaking in e-marketplaces of peer entities using Datalog
Fuzzy Sets and Systems
Data Integration through ${\textit{DL-Lite}_{\mathcal A}}$ Ontologies
Semantics in Data and Knowledge Bases
Semantic-Based Top-k Retrieval for Competence Management
ISMIS '09 Proceedings of the 18th International Symposium on Foundations of Intelligent Systems
DL-Lite: tractable description logics for ontologies
AAAI'05 Proceedings of the 20th national conference on Artificial intelligence - Volume 2
Query rewriting and answering under constraints in data integration systems
IJCAI'03 Proceedings of the 18th international joint conference on Artificial intelligence
IJCAI'05 Proceedings of the 19th international joint conference on Artificial intelligence
Data complexity of reasoning in very expressive description logics
IJCAI'05 Proceedings of the 19th international joint conference on Artificial intelligence
Journal on data semantics X
An Ontology Mediated Multimedia Information Retrieval System
ISMVL '10 Proceedings of the 2010 40th IEEE International Symposium on Multiple-Valued Logic
Towards top-k query answering in description logics: the case of DL-Lite
JELIA'06 Proceedings of the 10th European conference on Logics in Artificial Intelligence
Query answering in normal logic programs under uncertainty
ECSQARU'05 Proceedings of the 8th European conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty
Uncertainty management in logic programming: simple and effective top-down query answering
KES'05 Proceedings of the 9th international conference on Knowledge-Based Intelligent Information and Engineering Systems - Volume Part II
SQLf: a relational database language for fuzzy querying
IEEE Transactions on Fuzzy Systems
TJJE: An efficient algorithm for top-k join on massive data
Information Sciences: an International Journal
Ontology-based access to probabilistic data with OWL QL
ISWC'12 Proceedings of the 11th international conference on The Semantic Web - Volume Part I
Efficient execution of top-k SPARQL queries
ISWC'12 Proceedings of the 11th international conference on The Semantic Web - Volume Part I
Reliability assessment and failure analysis of lithium iron phosphate batteries
Information Sciences: an International Journal
A Logic-based Computational Method for the Automated Induction of Fuzzy Ontology Axioms
Fundamenta Informaticae - Special Issue on the Italian Conference on Computational Logic: CILC 2011
| Hi-index | 0.07 |
We address the problem of evaluating ranked top-k queries in the context of ontology mediated access over relational databases. An ontology layer is used to define the relevant abstract concepts and relations of the application domain, while facts with associated score are stored into a relational database. Queries are conjunctive queries with ranking aggregates and scoring functions. The results of a query may be ranked according to the score and the problem is to find efficiently the top-k ranked query answers.