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OWL Ontology Optimization using Constrained Multi-objective Genetic Algorithm for Reducing Load of Inference Enabled SPARQL Query Execution

Naoki Yamada, Naoki Fukuta
2018 Joint International Conference of Semantic Technology  
In optimizing an OWL ontology for executing SPARQL queries on an LOD endpoint with inference engine, there are a number of SPARQL queries that we would probably take into account and many of these factors  ...  In this paper, for reducing query execution time on an inference-enabled LOD endpoint, we propose an idea and its implementation to employ a constrained multi-objective evolutionary approach to make modification  ...  Therefore, finding the optimal solution of an ontology modification method in a small population size and a small number of generations is important for reducing the time cost of GA.  ... 
dblp:conf/jist/YamadaF18 fatcat:56bclm76kbhxlnyiybiiw6zixi

ODB-Tools: A description logics based tool for schema validation and semantic query optimization in object oriented databases [chapter]

Sonia Bergamaschi, Claudio Sartori, Domenico Beneventano, Maurizio Vincini
1997 Lecture Notes in Computer Science  
ODB-Tools is a integrated environment for the object oriented database (OODB) validation, preserving taxonomy coherence and performing taxonomic inferences, and semantic query optimization.  ...  Semantic query optimization uses problem-speci c knowledge (e.g. integrity constraints) for transforming a query into an equivalent one (i.e. with the same answer set) that may be answered more e ciently  ...  ODB-Tools is a integrated environment for the object oriented database (OODB) validation, preserving taxonomy coherence and performing taxonomic inferences, and semantic query optimization.  ... 
doi:10.1007/3-540-63576-9_130 fatcat:brelyhs7ffdljgww6ob6ntf33i

Semantic query optimization for methods in object-oriented database systems

K. Aberer, G. Fischer
Proceedings of the Eleventh International Conference on Data Engineering  
In this paper we concentrate on the question of how semantic knowledge about methods can be considered in query optimization.  ...  We rely on the algebraic and rulebased approach for query optimization and present a framework that allows to integrate schema-specific knowledge by tailoring the query optimizer according to the particular  ...  We claim that methods lead to a new quality for semantic query optimization in OODBMSs, due to the much richer semantics they provide as compared to attributes.  ... 
doi:10.1109/icde.1995.380406 dblp:conf/icde/AbererF95 fatcat:fvng4dlcerfghafjar2tceonqq

Semantic query processing in object-oriented databases using deductive approach

S. C. Yoon, I. Y. Song, E. K. Park
1995 Proceedings of the fourth international conference on Information and knowledge management - CIKM '95  
The unique contribution of this paper is that we extend semantic query optimization techniques developed for deductive databases to apply to object-oriented databases.  ...  To our knowledge, there is no significant research that has been done about semantic query optimization in object-oriented databases using deductive approach.  ...  The unique contribution of this paper is that we have applied and extended the semantic query optimization methods developed for dedcutive databases to object-oriented databases.  ... 
doi:10.1145/221270.221365 dblp:conf/cikm/YoonSP95 fatcat:f5qeo36g5jgbhfblumggqbiycy

SQOPI: Semantic Query Optimization Framework

Mohamed MounirHassan, Ahmed Mohammed Sultan
2014 International Journal of Computer Applications  
Semantic query optimization uses semantic knowledge in databases to rewrite queries and logic programs for the purpose of more efficient query evaluation.  ...  There has been a large body of work in the area of semantic query optimization.  ...  It's worthy to mention that semantic query optimization subcomponent of the framework is not exposed to the application developer and has no corresponding API objects for working with it.  ... 
doi:10.5120/16800-6516 fatcat:gis5ke73prdivnkb6cqnjoowxi


2007 Advances in Scalable Web Information Integration and Service  
In this paper we outline optimizations that are based on semantics of the data being queried, and introduce efficient algorithms for content and keyword searches in XML databases.  ...  If the semantics are known we can further optimize the query processing, but if the semantics are unknown we revert to the traditional query processing approaches.  ...  Using Semantics in Query Processing Here we outline how the semantics captured by ORA-SS schema can be used to optimize twig pattern query evaluation with three twig pattern queries.  ... 
doi:10.1142/9789812770240_0001 fatcat:yfdf7hutenhxzjrguld65f25rq

TwigTable: Using Semantics in XML Twig Pattern Query Processing [chapter]

Huayu Wu, Tok Wang Ling, Bo Chen, Liang Xu
2011 Lecture Notes in Computer Science  
If more semantics of object classes are known in an XML document, we can process queries more efficiently with these semantic optimizations.  ...  Motivated on solving these problems, we propose a semantic approach for XML twig pattern query processing.  ...  Optimization: A simple idea is to merge the object/property tables in Optimization 1 for each object class.  ... 
doi:10.1007/978-3-642-22630-4_4 fatcat:exq2hxqrovghfpyqqxrbq2r3ca

Logic-based query optimization for object databases

J. Grant, J. Gryz, J. Minker, L. Raschid
2000 IEEE Transactions on Knowledge and Data Engineering  
In this paper, we present one optimization technique for semantic query optimization (SQO) based on the residue technique of [6], [7], [8] .  ...  AbstractÐWe present a technique for transferring query optimization techniques, developed for relational databases, into object databases.  ...  ACKNOWLEDGMENTS We would like to thank the referees for the many constructive comments that they have made.  ... 
doi:10.1109/69.868906 fatcat:3bdgg4rolvg2pcmpj43s3fr4am

Using semantics in XML query processing

Zhifeng Bao, Huayu Wu, Bo Chen, Tok Wang Ling
2008 Proceedings of the 2nd international conference on Ubiquitous information management and communication - ICUIMC '08  
We discuss how semantics can be used for optimizing twig pattern queries.  ...  However, majority of existing approaches for XML query processing do not exploit semantic information in the underlying database.  ...  Second, if XML document's semantic information is not available, we achieve optimization by exploiting the semantics of the query.  ... 
doi:10.1145/1352793.1352826 dblp:conf/icuimc/BaoWCL08 fatcat:dm7cq2q26bbphbfdgs7rhbzjm4

Development of object-oriented database management system: OOIM

Kyuho Kim, Kyoungin Kwon, Songchun Moon
1994 Microprocessing and Microprogramming  
The basic principles for optimization are to build a framework on a formal algebraic basis and to operate directly with graph-based query specifications.  ...  This paper describes two focal issues: visual query optimization and concurrency control in designing OOIM, which is an object-oriented database management system being developed at KAIST.  ...  with rich semantics into an algebraic expression, which is the basis of Visual Query Processor (VQP), the query processor for OOIM.  ... 
doi:10.1016/0165-6074(94)90028-0 fatcat:kynua4kkq5d6zfhcmkax7bycf4

Querying streaming point clusters as regions

Chengyang Zhang, Yan Huang
2010 Proceedings of the ACM SIGSPATIAL International Workshop on GeoStreaming - GIS '10  
We propose two query optimization strategies, namely semanticsbased optimization and incremental optimization for answering queries involving both point geo-streams and static data set.  ...  Querying streaming point clusters as regions directly in a geo-stream database has many benefits, but is also very challenging.  ...  In this subsection, we will propose the semantics-based query optimization method for the join query illustrated in query Q1.  ... 
doi:10.1145/1878500.1878510 dblp:conf/gis/ZhangH10 fatcat:c3gy4fda4jd2foqe3sl3zeu2fe

Timestamp Embedding Query Stream Processing Engine

M. Ananthi, M. R. Sumalatha
2015 Indian Journal of Science and Technology  
Findings: The continuous stream of queries is properly handled by the dynamic sliding window and sent to the query optimizer for optimization.  ...  Background/Objectives: To improve the performance of the streaming data through RDF vocabulary and multi query optimization.  ...  Efficient heuristic solutions are suggested for various query types and query mixes using multiple query optimizations.  ... 
doi:10.17485/ijst/2015/v8i27/74930 fatcat:h6ldju2r7bdajpmpu7ohz7yege

The BigDAWG Polystore System

Jennie Duggan, Stan Zdonik, Aaron J. Elmore, Michael Stonebraker, Magda Balazinska, Bill Howe, Jeremy Kepner, Sam Madden, David Maier, Tim Mattson
2015 SIGMOD record  
Open questions in this space revolve around query optimization and the assignment of objects to storage engines.  ...  This paper presents a new view of federated databases to address the growing need for managing information that spans multiple data models.  ...  For simplicity, we leave the control of redundant copies of data objects for future work. In the rest of this paper we discuss our approach to query optimization and data placement.  ... 
doi:10.1145/2814710.2814713 fatcat:utkjzoijlvcxpm2rhykgfz5l4a

A Query Matching Approach for Object Relational Databases Over Semantic Cache [chapter]

Hafiz Muhammad Faisal, Muhammad Ali Tariq, Atta-ur -Rahman, Anas Alghamdi, Nawaf Alowain
2020 Application of Decision Science in Business and Management  
Hence, we proposed object relational databases over semantic cache. It is a novelty because semantic cache is mature for evaluation of relational databases but not for object relational databases.  ...  In this research, the implementation of query matching on object relational database with semantic caching along with object query is investigated to reduce the response time.  ...  In [24] , authors present the Object Relational Query Processing approach for optimizing the queries over ORDBMS. The approach was originally inspired by the object oriented paradigm.  ... 
doi:10.5772/intechopen.90004 fatcat:tgqq5kpf6falzh6olvfsgupasa

BiOpt: Bi-Level Optimization for Few-Shot Segmentation [article]

Jinlu Liu and Liang Song and Yongqiang Qin
2020 arXiv   pre-print
On each task, the inner loop aims to learn optimized prototypes from the query images.  ...  In the inductive setting, existing prototype-based methods focus on extracting prototypes from the support images; however, they fail to utilize semantic information of the query images.  ...  BiOpt (lower) targets to estimate query prototypes which leverages semantic information on the unlabeled query image by inner optimization.  ... 
arXiv:2011.11245v1 fatcat:wg3gzmexlzf7tgdrgxtgnyanou
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