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- W2913057660 abstract "Data is often associated with uncertainty because the fusion of conflicting data sources, measurement inaccuracy, sampling discrepancy, outdated data sources. We address the problem of query answering over uncertain big data sources using Resource Description Framework (RDF) and ontologies, while computing the exact uncertainty measure of the answer. Therefore, the probability is embraced along the reasoning process when answering. the query. In this paper, we introduce a probabilistic approach for answering user queries that computes complete results by exploiting uncertain knowledge on data sources. We have designed algorithms that are ontological rules based to infer implicit data by combining saturation and query rewriting reasoning. To handle big data the algorithms are spark-based implementation." @default.
- W2913057660 created "2019-02-21" @default.
- W2913057660 creator A5073280092 @default.
- W2913057660 creator A5086740653 @default.
- W2913057660 date "2018-12-01" @default.
- W2913057660 modified "2023-10-14" @default.
- W2913057660 title "Query Answering On Uncertain Big RDF Data Using Apache Spark Framework" @default.
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- W2913057660 doi "https://doi.org/10.1109/bigdata.2018.8621905" @default.
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