منابع مشابه
Similarity-based relaxed instance queries
In Description Logics (DL) knowledge bases (KBs), information is typically captured by clear-cut concepts. For many practical applications querying the KB by crisp concepts is too restrictive; a user might be willing to lose some precision in the query, in exchange of a larger selection of answers. Similarity measures can offer a controlled way of gradually relaxing a query concept within a use...
متن کاملSimilarity-based Relaxed Instance Queries in EL++
Description Logic (DL) knowledge bases (KBs) allow to express knowledge about concepts and individuals in a formal way. This knowledge is typically crisp, i.e., an individual either is an instance of a given concept or it is not. However, in practice this is often too restrictive: when querying for instances, one may often also want to find suitable alternatives, i.e., individuals that are not ...
متن کاملAnswering Instance Queries Relaxed by Concept Similarity
In Description Logic (DL) knowledge bases (KBs) information is typically captured by crisp concepts. For many applications, querying the KB by crisp query concepts is too restrictive. A controlled way of gradually relaxing a query concept can be achieved by the use of concept similarity measures. In this paper we formalize the task of instance query answering for crisp DL KBs using concepts rel...
متن کاملTowards Instance Query Answering for Concepts Relaxed by Similarity Measures
In Description Logics (DL) knowledge bases (KBs) information is typically captured by crisp concept descriptions. However, for many practical applications querying the KB by crisp concepts is too restrictive. A controlled way of gradually relaxing a query concept can be achieved by the use of similarity measures. To this end we formalize the task of instance query answering for crisp DL KBs usi...
متن کاملElastiq: Answering Similarity-threshold Instance Queries in EL
Recently an approach has been devised how to employ concept similarity measures (CSMs) for relaxing instance queries over EL ontologies in a controlled way. The approach relies on similarity measures between pointed interpretations to yield CSMs with certain properties. We report in this paper on Elastiq, which is a first implementation of this approach and propose initial optimizations for thi...
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ژورنال
عنوان ژورنال: Journal of Applied Logic
سال: 2015
ISSN: 1570-8683
DOI: 10.1016/j.jal.2015.01.002