View source for Faq choose between different cross validation leave out options

===Issue:===

How do I choose between the different cross-validation leave-out options?

===Possible Solutions:===

There are many attributes that influence selection of the appropriate cross-validation scheme for a given situation: 

* The ordering of the samples in the dataset, 
* The total number of objects (and variables) in the dataset 
* The presence (or lack thereof) of replicate samples in the dataset 
* The specific objective(s) of the analysis, 
* The consequences/costs of overly optimistic or overly pessimistic results, and 
* The amount of time available to do cross-validation

For details on the different methods, see our Wiki page: [[Using Cross-Validation]]
and, in particular, [[Using Cross-Validation#Choosing the Cross-Validation Method | Choosing the Cross-Validation Method]]


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[[Category:FAQ]]