mql4beginner questions

• How to to add a new column that will count the number of duplicates value from a specific column
• Make sampling run faster
• How can I tell h2o deep learning grid to have AUC instead of residual deviance
• How can I change all factor variables into numeric variables in a bulk [duplicate]
• How to remove specific columns when doing a logistic regression on all variables
• Why mean function doesn't work with ave function
• How to use parRF method so random forest will run faster
• How to import fundamentals for stocks by using Quandl package
• How to add new calculated variables to a data frame
• What is the meaning of this error "Error in if (any(B < 1)) stop("B too small")" while using tabplot package

mql4beginner answers