Supervised Knowledge Discovery From
Incomplete Data
Author(s)
A. Kalousis & M. Hilario
Abstract
Incomplete data can raise more or less serious problems in knowledge discovery
systems depending on the quantity and pattern of missing values as well as the
generalization method used. For instance, some methods are inherently resilient
to missing values while others have built-in methods for coping with them. Still
others require that none of the values are missing; for such methods, preliminary
imputation of missing values is indispensable.
After a quick overview of current practice in the machine learning field, we
explore the problem of missing values from a statistical perspective. In
particular, we adopt the well-known distinction between three patterns of
missing values—missing completely at random (MCAR), missing at random
(MAR) and not missing at random (NMAR)—to focus a comparative study of
Keywords
Related Book
Other papers in this volume
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