User 761 | 3/17/2015, 6:22:15 AM
Hello again! I had a question regarding Feature Rescaling in the classifiers
Say I feed a training set into a classifier with features rescaling turned on. According to the documentation its an L2 normalization and "The coefficients are returned in original scale of the problem". What does this mean exactly? Is the l2-norm of the feature incorporated in the feature coefficients? Suppose I have a logistic regression model. I take all the feature coefficients and want to use them outside Graphlab for new incoming data. Can I use the feature coefficients directly on the new data or must I scale the incoming data first? If I can use them directly that's great. Otherwise where can I find the feature norms calculated by graphlab to modify the new data before applying the coefficients to it?