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What is Positive Preference

Chapter 16
Handbook of Research on Innovative Database Query Processing Techniques
A Positive preference is a kind of expectation, which means that the expectation of an object property or value is greater than other properties.
Published in Chapter:
Fuzzy Querying of RDF with Bipolar Preference Conditions
Hairong Wang (Beifang University of Nationality, China), Jingwei Cheng (Northeastern University, China), and Z. M. Ma (Northeastern University, China)
Copyright: © 2016 |Pages: 21
DOI: 10.4018/978-1-4666-8767-7.ch016
Abstract
To solve the problem of information bipolarity in fuzzy querying of RDF, we propose an approach of RDF fuzzy query with bipolar preference. We use linguistic variables to describe preference conditions, and realize an extended SPARQL syntax by adding bipolar preference conditions to FILTER clauses. We identify three types of bipolar information, dividing the bipolar preference query into univariate bipolarity and bivariate bipolarity, and provide a method for converting fuzzy SPARQL queries to standard SPARQL queries. For optimizing results, we use bipolar preference satisfaction degrees to calculate priority parameters of results for sequencing. Finally, the feasibility of the proposed approach is proved by the experimental system and results.
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