Machine Learning: Why do the error in cost function need to be squared?
59274
Why do cost functions use the square error?
54734
Standard error of the estimate in logistic regression
95041
What are some common issues with fitting functions to data?
153357
Why is step function not used in activation functions in machine learning?
43140
What does the cost (C) parameter mean in SVM?
17815
Understanding the minimization of mean squared error function
2180
What do the subscripts in expectations mean in loss function
148960
Out of Bag Error makes CV unnecessary in Random Forests?
109310
Understanding “the mean minimizes the mean squared error”
158388
Sampling error with weighted mean
2898
What's the MSE of $\hat{Y}$ in ordinary least squares using bias-variance decomposition?
2561
Why is the error function defined as it is?
139006
Numerical underflow for a scaled error function
52136
Linear regression with Laplace errors
128640
Euclidean distance vs Squared
18254
Is R-squared truly an invalid metric for non-linear models?
118772
Is R-squared value appropriate for comparing models?