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This is a follow-up question to Creating a matrix from Pandas dataframe to display connectedness. T… Read more Creating A Matrix From Pandas Dataframe To Display Connectedness - 2

I have a a text file (huge amount of float numbers) with 25 columns. I want to extract column 14 an… Read more Extract A Column From Text File

I have been searching for an answer but I don't know what to search for so I'll ask here in… Read more Creating Boolean Matrix From One Column With Pandas

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?

This thread successfully answers how to use numpy to calculate the tensor product of two matrices i… Read more How To Generate A Usable Tensor Product Of Two Matrices In Python

I have a NumPy array of 3,076,568 binary values (1s and 0s). I would like to convert this to a matr… Read more Turning A Large Matrix Into A Grayscale Image

I have a matrix which represents a distances to the k-nearest neighbour of a set of points, and the… Read more Theano: Summation By Class Label

I need to permute elements of columns in the matrix A (3D matrix by axis 0) by 2D permutation matri… Read more Numpy Array Permute Columns 3d Matrix With Argsort

In this question six months ago, jez was nice enough to help me come up with a fast approximation f… Read more Fast Weighted Scatter Matrix Calculation

I wonder what could be the easiest way to create a bi-dimensional array, that has for each row the … Read more Simpler Way To Create A Matrix/list Of Indices?

I have combined two lists using zip syntax. When I saved it in csv format, whole data are stayed in… Read more Manipulation Of Csv Format In Python Files

I have a list 'data_list', and I would save it in order to load it in another script. First… Read more Error Saving And Loading A List Of Matrices

I have pairs of equal-length strings in Python, and an accepted alphabet. Not all of the letters in… Read more Calculating A Similarity/difference Matrix From Equal Length Strings In Python

I'm looking for the most efficient way of finding the intersection of two different-sized matri… Read more Finding Intersection Of Two Matrices In Python Within A Tolerance?

I have two large square matrices ( in two CSV files). The two matrices may have a few different lab… Read more Add Matrices With Different Labels And Different Dimensions

Let say we have two matrices A and B. A has the shape (r, k) and B has the shape (r, l). Now I want… Read more How To Calculate The Outer Product Of Two Matrices A And B Per Rows Faster In Python (numpy)?

So i have a vector created with Numpy called V = [10 20 30 40 0 1] And i want a matrix M like t… Read more Put A Vector Inside A Matrix + Transformation

I'm converting a numpy matrix into an RDD with partition size 10. from pyspark import SparkCont… Read more Partition A Matrix Rdd In Pyspark

I'm using numpy 1.9 to work on a set of arrays. Assuming I have something like that I have two … Read more Efficent Insertion Of Not Aligned Elements In A Numpy Array

I have a correlation matrix like so a b c a 1 0.5 0.3 b 0.5 1 0.7 c 0.3 0.… Read more Transforming A Correlation Matrix To A 3 Column Dataframe In Pandas?