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I have a sparse matrix of 10001 rows + 10001 columns (with many 0's), I am trying to raise the … Read more Raise The Power Of A Sparse Matrix

I am trying to multiplicate a whole dataframe size 40 row * 600 columns by a pandas.core.series.Ser… Read more Pandas: Multiplying Dataframes

Is there any difference? If not, what is preferred by convention? The performance seems to be almos… Read more What Is Difference Between The Function Numpy.dot(), @, And Method .dot() For Matrix-matrix Multiplication?

In numpy, the numpy.dot() function can be used to calculate the matrix product of two 2D arrays. I … Read more Find The Dot Product Of Sub-arrays In Numpy

i have 2 lists a=[[2,3,5],[3,6,2],[1,3,2]] b=[4,2,1] i want the output to be: c=[[8,12,20],[6,12,4… Read more Multiplication Between 2 Lists

I am looking for a fast (ie vectorized) method to replace the following loop. I have 2 numpy arrays… Read more Multiplication/division Of 2d Numpy Arrays To Produce 3d Array

Here is my code import numpy as np import time from scipy.spatial import distance y1=np.array([0,0… Read more Wondering Why Scipy.spatial.distance.sqeuclidean Is Twice Slower Than Numpy.sum((y1-y2)**2)

Here is my code import numpy as np import time from scipy.spatial import distance y1=np.array([0,0… Read more Wondering Why Scipy.spatial.distance.sqeuclidean Is Twice Slower Than Numpy.sum((y1-y2)**2)