منابع مشابه
Negative Knowledge for Certain Query Answers
Querying incomplete data usually amounts to finding answers we are certain about. Standard approaches concentrate on positive information about query answers, and miss negative knowledge, which can be useful for two reasons. First, sometimes it is the only type of knowledge one can infer with certainty, and second, it may help one find good and efficient approximations of positive certain answe...
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In this demo we present an extension of SPARQL which allows queries to connect to JSON APIs and integrate the obtained information into query answers. We achieve this by adding a new operator to SPARQL, and implement this extension on top of the Jena framework in order to illustrate how it functions with real world APIs.
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The capture, the structuring and the exploitation of the expertise or the capabilities of an “object” (like a business partner, an employee, a software component, a Web site, etc.) are crucial problems in various applications, like cooperative and distributed applications or e-business and e-commerce applications. The work we describe in this paper concerns the advertising of the capabilities o...
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With the increased generation and availability of big data in different domains, there is an imminent requirement for data analysis tools that are able to ‘explain’ the trends and anomalies obtained from this data to a range of users with different backgrounds. Wu-Madden (PVLDB 2013) and Roy-Suciu (SIGMOD 2014) recently proposed solutions that can explain interesting or unexpected answers to si...
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ژورنال
عنوان ژورنال: ACM Transactions on Database Systems
سال: 2018
ISSN: 0362-5915,1557-4644
DOI: 10.1145/3277503