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Title:
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ENHANCING ALGEBRAIC QUERY RELAXATIONWITH SEMANTIC SIMILARITY |
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Author(s):
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Lena Wiese |
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ISBN:
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978-972-8939-68-7 |
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Editors:
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Miguel Baptista Nunes, Pedro Isaías and Philip Powell |
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Year:
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2012 |
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Edition:
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Single |
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Keywords:
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Query relaxation, query generalization, similarity degree, relational algebra |
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Type:
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Full Paper |
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First Page:
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312 |
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Last Page:
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318 |
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Language:
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English |
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Cover:
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Full Contents:
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click to dowload 
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Paper Abstract:
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Cooperative database systems support a database user by searching for answers that are closely related to his query and hence are informative answers. Common operators to relax the user query are Dropping Condition, Anti-Instantiation and Goal Replacement. In this article, we provide an algebraic version of these operators. Moreover we propose some heuristics to assign a degree of similarity to each tuple of an answer table; this degree can help the user to determine whether this answer is relevant for him or not. |
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