Lee, Pei-Ju
(2015)
EFFICIENT INFORMATION INTEGRATION SYSTEM FOR TEMPORAL AND SPATIAL DATA.
Doctoral Dissertation, University of Pittsburgh.
(Unpublished)
Abstract
In this dissertation, I develop a novel inconsistency detection and data fusion method for data integration systems. Inconsistent data may lead to incorrect query results and induce unexplainable outcomes. I propose an inconsistency detection method to find out which data items (e.g., temporal or spatial report) have the higher potential to cause data conflicts as well as to estimate a reasonable consistent reported value. My approach is based on representing overlapping data reports as a characteristic linear system. The characteristic linear system can be used to estimate consistent reported values within overlapping time and space intervals. I explore applicability of the proposed approach in different domains. In particular, I perform temporal data fusion with time-overlapping reports using a historical database. I also experiment with spatial data fusion involving space-overlapping reports using simulation of sensor data sets of robots performing search and rescue task. Finally, I apply the proposed approach to combine temporal and spatial fusion and demonstrate that such multidimensional fusion improves inconsistency detection and target value estimation.
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Details
Item Type: |
University of Pittsburgh ETD
|
Status: |
Unpublished |
Creators/Authors: |
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ETD Committee: |
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Date: |
7 May 2015 |
Date Type: |
Publication |
Defense Date: |
17 March 2015 |
Approval Date: |
7 May 2015 |
Submission Date: |
5 May 2015 |
Access Restriction: |
No restriction; Release the ETD for access worldwide immediately. |
Number of Pages: |
139 |
Institution: |
University of Pittsburgh |
Schools and Programs: |
School of Information Sciences > Information Science |
Degree: |
PhD - Doctor of Philosophy |
Thesis Type: |
Doctoral Dissertation |
Refereed: |
Yes |
Uncontrolled Keywords: |
Data fusion, Information integration, Temporal and spatial data fusion, Linear system. |
Date Deposited: |
07 May 2015 15:37 |
Last Modified: |
15 Nov 2016 14:28 |
URI: |
http://d-scholarship.pitt.edu/id/eprint/25131 |
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