publication . Doctoral thesis . 2016

Integration, Provenance, and Temporal Queries for Large-Scale Knowledge Bases

Gao, Shi;
Open Access English
  • Published: 01 Jan 2016
  • Publisher: eScholarship, University of California
  • Country: United States
Abstract
Knowledge bases that summarize web information in RDF triples deliver many benefits, including support for natural language question answering and powerful structured queries that extract encyclopedic knowledge via SPARQL. Large scale knowledge bases grow rapidly in terms of scale and significance, and undergo frequent changes in both schema and content. Two critical problems have thus emerged: (i) how to support temporal queries that explore the history of knowledge bases or flash-back to the past; (ii) how to integrate knowledge from difference sources and improve the quality of integrated knowledge base while preserving the provenance information. In this dis...
Subjects
free text keywords: Computer science, Knowledge Base, Optimization, Query Processing, Temporal
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