Title :
VoidWiz: Resolving incompleteness using network effects
Author :
Christodoulakis, Christina ; Faloutsos, Christos ; Miller, Robert J.
Author_Institution :
Dept. of Comput. Sci., Univ. of Toronto, Toronto, ON, Canada
fDate :
March 31 2014-April 4 2014
Abstract :
If Lisa visits Dr. Brown, and there is no record of the drug he prescribed her, can we find it? Data sources, much to analysts´ dismay, are too often plagued with incompleteness, making business analytics over the data difficult. Data entries with incomplete values are ignored, making some analytic queries fail to accurately describe how an organization is performing. We introduce a principled way of performing value imputation on missing values, allowing a user to choose a correct value after viewing possible values and why they were inferred. We achieve this by turning our data into a graph network and performing link prediction on nodes of interest using the belief propagation algorithm.
Keywords :
belief maintenance; data analysis; data visualisation; learning (artificial intelligence); VoidWiz system; analytic queries; belief propagation algorithm; business analytics; data entries; data sources; graph network; link prediction; network effects; value imputation; Algorithm design and analysis; Belief propagation; Clinical trials; Data visualization; Drugs; Educational institutions; Prediction algorithms;
Conference_Titel :
Data Engineering (ICDE), 2014 IEEE 30th International Conference on
Conference_Location :
Chicago, IL
DOI :
10.1109/ICDE.2014.6816748