python报错invalid_python运行报错 RuntimeWarning: invalid value in double_scalars

我就搞不懂了，为什么运行老是会报类似于RuntimeWarning: overflow encountered in multiply的这种错误，这个应该不是代码逻辑的问题吧

部分代码如下：

#!/usr/bin/env python

# -*- coding: utf-8 -*-

# @File : TrustMF.py

from baseclass.SocialRecommender import SocialRecommender

import numpy as np

from tool import config

class TrustMF(SocialRecommender):

def __init__(self, conf,trainingSet=None,testSet=None,relation=list(),fold='[1]'):

super(TrustMF, self).__init__(conf,trainingSet,testSet,relation,fold)

def initModel(self):

super(TrustMF, self).initModel()

self.Br = np.random.rand(self.dao.trainingSize()[0], self.k) # latent user matrix

self.Wr = np.random.rand(self.dao.trainingSize()[0], self.k) # latent item matrix

self.Vr = np.random.rand(self.dao.trainingSize()[1], self.k) # latent item matrix

self.Be = np.random.rand(self.dao.trainingSize()[0],

最后

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