graphdatabases have aroused a large interest in the last years thanks to their large scope of potential applications (e.g. social networks, biomedical networks, data stemming from the web). In a similar way as what h...
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ISBN:
(纸本)9781467374286
graphdatabases have aroused a large interest in the last years thanks to their large scope of potential applications (e.g. social networks, biomedical networks, data stemming from the web). In a similar way as what has already been proposed in relational databases, defining a language allowing a flexible querying of graphdatabases may greatly improve usability of data. This paper focuses on the notion of fuzzy graph database and describes a fuzzy query language that makes it possible to handle such database, which may be fuzzy or not, in a flexible way. This language, called FUDGE, can be used to express preference queries on fuzzy graph databases. The preferences concern i) the content of the vertices of the graph and ii) the structure of the graph. The FUDGE language is implemented in a system, called SUGAR, that we present in this article. We also discuss implementation issues of the FUDGE language in SUGAR.
Imperfect data express their meanings incompletely and the Theory of fuzzy Sets arises as mathematically support for the interpretation of those data. The union of these concepts describes a new data type, called fuzz...
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ISBN:
(纸本)9781450362498
Imperfect data express their meanings incompletely and the Theory of fuzzy Sets arises as mathematically support for the interpretation of those data. The union of these concepts describes a new data type, called fuzzy data. We discuss the use of fuzzy data in graphdatabases. Previous works define fuzzy queries on graphdatabases but the data stored is a regular and perfect data. In that works we extent a graphdatabase and lets the users store information in the fuzzy and imperfect data. The databases management system Neo4j is proposed to developed the application and the Cypher database languages to describes the imperfect data definitions. We uses a social network use case to illustrated the works,
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