RE: [R] an off-topic question - model validation

2004-11-12 Thread bogdan romocea
, 2004 10:20 PM To: [EMAIL PROTECTED] Subject: [R] an off-topic question - model validation Currently, I am working on a data mining project and plan to divide the data table into 2 parts, one for modeling and the other for validation to compare several models. But I am not sure about

[R] an off-topic question - model validation

2004-11-11 Thread Wensui Liu
Currently, I am working on a data mining project and plan to divide the data table into 2 parts, one for modeling and the other for validation to compare several models. But I am not sure about the percentage of data I should use to build the model and the one I should keep to validate the model.

Re: [R] an off-topic question - model validation

2004-11-11 Thread Frank E Harrell Jr
Wensui Liu wrote: Currently, I am working on a data mining project and plan to divide the data table into 2 parts, one for modeling and the other for validation to compare several models. But I am not sure about the percentage of data I should use to build the model and the one I should keep to