scholarly journals Null Values Revisited in Prospect of Data Integration

2004 ◽  
pp. 79-90 ◽  
Author(s):  
Guy de Tré ◽  
Rita de Caluwe ◽  
Henri Prade
Keyword(s):  
Data Integration ◽  
Null Values

Optimizing the Accuracy of Entity-Based Data Integration of Multiple Data Sources Using Genetic Programming Methods

2012 ◽  
Vol 3 (1) ◽  
pp. 72-82 ◽  
Author(s):  
Yinle Zhou ◽  
Ali Kooshesh ◽  
John Talburt
Keyword(s):  
Genetic Programming ◽  
Data Integration ◽  
Synthetic Data ◽  
Multiple Data ◽  
Null Value ◽  
Selection Operators ◽  
Series Of Experiments ◽  
Null Values ◽  
Selection Operator ◽  
Different Sources

Entity-based data integration (EBDI) is a form of data integration in which information related to the same real-world entity is collected and merged from different sources. It often happens that not all of the sources will agree on one value for a common attribute. These cases are typically resolved by invoking a rule that will select one of the non-null values presented by the sources. One of the most commonly used selection rules is called the naïve selection operator that chooses the non-null value provided by the source with the highest overall accuracy for the attribute in question. However, the naïve selection operator will not always produce the most accurate result. This paper describes a method for automatically generating a selection operator using methods from genetic programming. It also presents the results from a series of experiments using synthetic data that indicate that this method will yield a more accurate selection operator than either the naïve or naïve-voting selection operators.

THE VALUE OF DATA INTEGRATION IN A COMPLEX WELL SCENARIO: A CASE STUDY FROM THE WEST NETHERLANDS

2020 ◽  
Author(s):  
Abhinandan Kohli ◽  
◽  
Emile Fokkema ◽  
Oscar Kelder ◽  
Zulkifli Ahmad ◽  
...  
Keyword(s):  
Data Integration ◽  
The West ◽  
Complex Well

Using the QBox platform to assess quality in data integration systems

2010 ◽  
Vol 15 (6) ◽  
pp. 105-124
Author(s):  
Fernando Lemos ◽  
Mohamed Reda Bouadjenek ◽  
Mokrane Bouzeghoub ◽  
Zoubida Kedad
Keyword(s):  
Data Integration ◽  
Assess Quality
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