An Algebra for Fuzzy Spatiotemporal Data in XML

Bai, Luyi; Zhu, Lin

doi:10.1109/access.2019.2898228

Cited by 7 publications

(2 citation statements)

References 25 publications

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“…In this work, the logical structure of a spatiotemporal database, data type systems, and querying operations were investigated. Bai et al [29] deal with fuzzy information and propose an algebra for fuzzy spatiotemporal data in XML.…”

Section: Algebra For Spatiotemporal Datamentioning

confidence: 99%

Algebraic Operations on Spatiotemporal Data Based on RDF

Zhu¹,

Li²,

Bai³

2020

IJGI

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In the context of the Semantic Web, the Resource Description Framework (RDF), a language proposed by W3C, has been used for conceptual description, data modeling, and data querying. The algebraic approach has been proven to be an effective way to process queries, and algebraic operations in RDF have been investigated extensively. However, the study of spatiotemporal RDF algebra has just started and still needs further attention. This paper aims to explore an algebraic operational framework to represent the content of spatiotemporal data and support RDF graphs. To accomplish our study, we defined a spatiotemporal data model based on RDF. On this basis, the spatiotemporal semantics and the spatiotemporal algebraic operations were investigated. We defined five types of graph algebras, and, in particular, the filter operation can filter the spatiotemporal graphs using a graph pattern. Besides this, we put forward a spatiotemporal RDF syntax specification to help users browse, query, and reason with spatiotemporal RDF graphs. The syntax specification illustrates the filter rules, which contribute to capturing the spatiotemporal RDF semantics and provide a number of advanced functions for building data queries.

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Section: Algebra For Spatiotemporal Datamentioning

confidence: 99%

Algebraic Operations on Spatiotemporal Data Based on RDF

Zhu¹,

Li²,

Bai³

2020

IJGI

Self Cite

View full text Add to dashboard Cite

show abstract

“…Ma and Li 10 identified multigranularity of data fuzziness in XML based on possibility theory and developed a fuzzy XML data model that addresses types of fuzziness. Combining the labeling and ordering of XML documents and the nature of fuzzy spatiotemporal data, Bai et al proposed a series of approaches to model fuzzy spatiotemporal data based on XML 11,12,13 Furthermore, concerning on querying XML data, Xu et al 14 proposed a contextual preference query method of and content scoring; Li et al 15 investigated probabilistic threshold keyword queries (PrTKQ) over XML data and proposed two querying algorithms utilizing probability density function (query); Campi et al 16 present a flexible framework for querying semistructured XML data based on fuzzy set theory. In their proposed framework, a new function aiming at providing a degree of similarity between two XML trees is also introduced; Damiani et al 17 elaborate on the graph-based technique for posing blind queries to unvalidated XML information.…”

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confidence: 99%