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Showing posts with the label Matrix

How Is Covariance Implemented Internally In Numpy?

This is the definition of a covariance matrix. http://en.wikipedia.org/wiki/Covariance_matrix#Defin… Read more How Is Covariance Implemented Internally In Numpy?

Fast Row Operations With Python Sparse Matrices

I have a large sparse matrix in python, and would like to perform many elementary row operations on… Read more Fast Row Operations With Python Sparse Matrices

How To Split A Matrix Into 4 Blocks Using Numpy?

I'm implementing Strassen's Matrix Multiplication using python. In divide step, we divide a… Read more How To Split A Matrix Into 4 Blocks Using Numpy?

2d Array Of Lists In Python

I am trying to create a 2d matrix so that each cell contains a list of strings. Matrix dimensions a… Read more 2d Array Of Lists In Python

How To Get A Subset Of Rows From A Numpy Matrix Based On A Condition?

How to return a set of rows of a NumPy Matrix that would match a given condition? This is a Numpy M… Read more How To Get A Subset Of Rows From A Numpy Matrix Based On A Condition?

Create A Frequency Matrix For Bigrams From A List Of Tuples, Using Numpy Or Pandas

I am very new to Python. I have a list of tuples, where I created bigrams. This question is pretty … Read more Create A Frequency Matrix For Bigrams From A List Of Tuples, Using Numpy Or Pandas

How To Find Words In A Matrix - Python

I've made a function to search horizontally for a word in a matrix full of letters. Now I'm… Read more How To Find Words In A Matrix - Python

How To Convert A Matrix Of Strings Into A Matrix Of Integers Using Comprehensions

I have a matrix [['1', '2'], ['3', '4']] which I want to convert to… Read more How To Convert A Matrix Of Strings Into A Matrix Of Integers Using Comprehensions