For example, in case of Logistic Regression, we can get Coefficients that can be multiplied by the predictors to get the final output in the form of an attribute in CSV file or an image. Please let me know if it is scientifically correct to get the weights/rules out of trained SVM. ANN, KNN, NB models and multiply each predictor with each weight/rule and get the sum for all predictors. I mean (predictor 1* its weight + predictor 2* its weight + predictor 3* its weigh + ........)