Dissertation > Excellent graduate degree dissertation topics show

Research on Key Technologies in Ontology-based Data Integration

Author: JiaZuo
Tutor: GuoShaoZhong
School: PLA Information Engineering University
Course: Applied Computer Technology
Keywords: Body Data Integration Heterogeneous Data OWL Mapping rules Decomposition
CLC: TP311.13
Type: Master's thesis
Year: 2009
Downloads: 56
Quote: 0
Read: Download Dissertation

Abstract


Due to the presence of rich database products , data patterns autonomy and diversity of data semantics and other reasons , making the data between heterogeneous phenomenon increasingly prominent. How to complete extraction , a comprehensive analysis of the underlying heterogeneous data and effectively to meet the needs of different users access to data and sharing requirements , critical issues facing today's data integration . In this paper , on the basis of existing data integration technology , the use of the body shielded from the semantic level data heterogeneity , given a set of schema information to OWL ontology mapping rules , the development of ontology-based query processing scheme , designed by the body to build and query processing and other components of data integration prototype system and tested . The main work of this paper are: ontology construction , the use of mode information table lists the hierarchical structure features , to seize the primary key , foreign key and critical information to design a model to OWL ontology mapping rules , the mode information toanalytical basis ; in the query decomposition , according to the characteristics of the area of the body , the use of connection characteristics of the central concept , design and implementation of the query decomposition algorithm based on the central concept in the global query is decomposed into sub-queries list at the same time , simplifying the result of reorganization consolidation method . Finally, the structures and data integration platform , with examples to test the prototype of the system , by comparing the recall and precision rates , indicates that the system can realize the integration of heterogeneous data access .

Related Dissertations

  1. Synthesis and Characterization on Semi-Aromatic Polyamides Containing Benzoxazole Units,O633.5
  2. The Inductive Load Based Vehicle Body Network Control System,U463.6
  3. Research and Implement of SDO Model in University Enroll System Based on SOA,G647
  4. The Algorithm of DFT with a Subset of Output Points Based on TS101 and Its Software Implementation,TN911.72
  5. Analysis and Control of 6-DOF Electrical Driven Parallel Manipulator,TP242.2
  6. Confucian Educational Thought Thought of Intersubujectivity,G40-09
  7. Effects of Dietary Oil Sources on Growth Perfomance, Lipid Deposition and Blood Biochemical Index of Carassius Auratus Gibelio,S963.1
  8. Pd-based cathode catalysts of direct methanol fuel cell,O643.36
  9. Recovery Sulphur from Zinc Concentrate of Pressure Acid Leaching Residue,X751
  10. Effect of Oil and Different Initial Body Weight on Fatty Liver in Landes Goose,S835
  11. The Establishment and Application of cPL Double Anti-Body Sandwich Elisa Method for the Diagnosis of Canine Acute Pancreatisis,S858.292
  12. Semantic Retrieval Research Based on Ontology,TP391.3
  13. Study on the Development Model of All People Body Building in Anhui Province,G812.4
  14. Influence of Estrogen and H.pylori on Human Duodenal Mucosal Bicarbonate Transport Protein,R573.1
  15. Mass media influence on female body image,B842.3
  16. Imidazolium ionic liquids Thermal Analysis,O626.23
  17. Design and Implementation of Heterogeneous Data Exchange System Based on XML,TP311.52
  18. Research and Implementation of Distributed Data Integration Visual Modeling,TP311.52
  19. Body right,D923
  20. Dynamic Analysis and Optimization of Six-bar Beating-up Mechanism of an Air-jet Loom,TS103.33
  21. (Class ) perovskite -type oxides catalytic elimination of N 2 O,X701

CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Programming > Database theory and systems
© 2012 www.DissertationTopic.Net  Mobile