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Questions related from Farideh Bagherzadeh Khiabani
I'm getting slightly different random numbers depending on the OS (Windows vs Linux) although I have specified the seed using set.seed. Is there anyway to guarantee reproducibility across...
13 March 2018 9,935 10 View
Dear all, as an example the output of a logistic regression based on wald test is provided. For instance, for scenario(1), (Beta)^2/(Standard Error)^2 = (0.551)^2/(0.362)^2=2.3167=2.32 ...
25 April 2015 2,130 8 View
I partitioned my data into train and test sets. I did outlier detection and missing value imputation in my training set. Then, I built a model on this set. I am not sure what I should do about...
01 February 2014 5,610 7 View
I am working on text mining in Rapid miner. I need to use the Word Net Dictionary. I installed the extension, and I downloaded the dictionary itself. But I don't know how to set parameters of...
26 November 2013 9,998 5 View
In the package randomForest of R, CARTs (based on gini) are used to create the forest. I need to use C4.5 (based on gain). Any recommendations for packages or commands?
11 November 2013 9,167 4 View
I have a data set of 500 records and 90 attributes. What are good ways to reduce the dimension without losing much information? I don't want to do something like PCA, because the interpretation...
05 September 2013 4,229 26 View