Capturing Missing Tuples and Missing Values
نویسندگان
چکیده
منابع مشابه
Incomplete Databases: Missing Records and Missing Values
Data completeness is an essential aspect of data quality as in many scenarios it is crucial to guarantee the completeness of query answers. Data might be incomplete in two ways: records may be missing as a whole, or attribute values of a record may be absent, indicated by a null. We extend previous work by two of the authors [10] that dealt only with the first aspect, to cover both missing reco...
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It is well established that missing values, if not dealt with properly, may lead to poor data analytics models, misleading conclusions, and limitation in the generalization of findings. A key challenge in detecting these missing values is when they manifest themselves in a form that is otherwise valid, making it hard to distinguish them from other legitimate values. We propose to demonstrate FA...
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ژورنال
عنوان ژورنال: ACM Transactions on Database Systems
سال: 2016
ISSN: 0362-5915,1557-4644
DOI: 10.1145/2901737