Approximation Measures for Conditional Functional Dependencies Using Stripped Conditional Partitions

Approximation Measures for Conditional Functional Dependencies Using Stripped Conditional Partitions

Received Apr 11, 2017 Revised May 5, 2017 Accepted May 24, 2017 Conditional functional dependencies (CFDs) have been used to improve the quality of data, including detecting and repairing data inconsistencies. Approximation measures have significant importance for data dependencies in data mining. To adapt to exceptions in real data, the measures are used to relax the strictness of CFDs for mor...

Tsallis Entropy and Conditional Tsallis Entropy of Fuzzy Partitions

The purpose of this study is to define the concepts of Tsallis entropy and conditional Tsallis entropy of fuzzy partitions and to obtain some results concerning this kind entropy. We show that the Tsallis entropy of fuzzy partitions has the subadditivity and concavity properties. We study this information measure under the refinement and zero mode subset relations. We check the chain rules for ...

Discovering Conditional Functional Dependencies in XML Data

XML data inconsistency has become a serious problem since XML was widely adopted as a standard for data representation on the web. XML-based standards such as OASIS, xCBL and xBRL have been used to report and exchange business and financial information. Such standards focus on technical rather than semantic aspects. XML Functional Dependencies (XFDs) have been introduced to improve XML semantic...

Discovering (frequent) constant conditional functional dependencies

Conditional functional dependencies (CFDs) have been recently introduced in the context of data cleaning. They can be seen as an unification of functional dependencies (FDs) and association rules (AR) since they allow to mix attributes and attribute/values in dependencies. In this paper, we introduce our first results on constant CFD inference. Not surprisingly, data mining techniques developed...

Conditional Differential Dependencies (CDDs)