Results 11 to 20 of about 273,540 (290)
An Efficient and Scalable Algorithm to Mine Functional Dependencies from Distributed Big Data [PDF]
Sensors, 2022 A crucial step in improving data quality is to discover semantic relationships between data. Functional dependencies are rules that describe semantic relationships between data in relational databases and have been applied to improve data quality ...
Wanqing Wu, Wenyu Mao
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Elaboration on functional dependencies: functional dependencies are dead, long live functional dependencies! [PDF]
ACM SIGPLAN Notices, 2017 Functional dependencies are a popular extension to Haskell's type-class system because they provide fine-grained control over type inference, resolve ambiguities and even enable type-level computations. Unfortunately, several aspects of Haskell's functional dependencies are ill-understood.
Karachalias, Georgios, Schrijvers, Tom
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Identifying Causal Effects Under Functional Dependencies [PDF]
EntropyWe study the identification of causal effects, motivated by two improvements to identifiability that can be attained if one knows that some variables in a causal graph are functionally determined by their parents (without needing to know the specific ...
Yizuo Chen, Adnan Darwiche
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Discovering Graph Functional Dependencies [PDF]
ACM Transactions on Database Systems, 2018 This article studies discovery of Graph Functional Dependencies (GFDs), a class of functional dependencies defined on graphs. We investigate the fixed-parameter tractability of three fundamental problems related to GFD discovery. We show that the implication and satisfiability problems are fixed-parameter tractable, but the validation problem is co-W[1]
Fan, Wenfei +3 more
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The Shapley Value of Inconsistency Measures for Functional Dependencies [PDF]
Logical Methods in Computer Science, 2022 Quantifying the inconsistency of a database is motivated by various goals including reliability estimation for new datasets and progress indication in data cleaning.
Ester Livshits, Benny Kimelfeld
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Research on Increased Data Repair with Confidence Value Token
Jisuanji kexue yu tansuo, 2021 In the era of big data, data contain great value and become important strategic resource in today??s information society. However, a large number of inconsistent data occur during the process of data update and management, which causes unpredictable side
HUANG Hui, LI Hailin
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ABOUT FUNCTIONAL DIAGNOSTICS OF CARS WITH AN ELECTRIC POWER PLANT
International Journal of Advanced Studies, 2023 The article is devoted to the development of a method of functional diagnostics of cars with an electric power plant on stands with running drums. The necessity of carrying out functional diagnostics of cars with an electric power plant is analyzed.
Anton S. Chernyshkov +2 more
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Toward an Axiomatization of Strongly Possible Functional Dependencies
Vietnam Journal of Computer Science, 2021 In general, there are two main approaches to handle the missing data values problem in SQL tables. One is to ignore or remove any record with some missing data values.
Munqath Alattar, Attila Sali
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Technology for restoring functional dependencies to determine reliability parameters
Қарағанды университетінің хабаршысы. Математика сериясы, 2021 The problem of determining the properties of the object by analyzing the numerical and qualitative characteristics of a discrete sample is considered.
V.P. Kvasnikov +2 more
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KeyFinder: An Efficient Minimal Keys Finding Algorithm For Relational Databases
Inteligencia Artificial, 2021 In relational databases, it is essential to know all minimal keys since the concept of database normaliza- tion is based on keys and functional dependencies of a relation schema.
Moussa Demba
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