Does the input matrix need to be normalized?

[zwtInBuaa]

Does the input matrix need to be normalized?
When I use MatrixFactorization() with the matrix without normalization(all the data in this matrix are lower than 1000.0), it just shows the problem:

what should I do to solve this problem?

[djx99]

Hi, did you fix it?

[sergeyf]

Sorry, we are only fixing bugs. This is not a bug. It's inconvenient, but not a bug. You can normalize yourself with one of these: https://github.com/iskandr/fancyimpute/blob/master/fancyimpute/scaler.py