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Questions tagged [binary-matrix]

54 questions
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Finding the number of 0s in a number of binary matrices in the same directory?

I am trying to get the number of 0s (or count of) in a number of binary matrix csv files? Is there an efficient way of doing this for multiple csv files at once? I have read in all the csv files from the set working directory using this code but I…
Lynda
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All possible binary matrices with some properties

I need to generate all possible 4x4 binary matrices that have zeros along the main diagonal, are symmetric, and have six entries equal to 1. Some examples: [[0,0,0,0], [0,0,1,1], [0,1,0,1], [0,1,1,0]], [[0,1,1,0], [1,0,1,0], [1,1,0,0], …
MathNew C
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Inverse of a binary matrix in C

I have a binary matrix (zeros and ones) D[][] of dimension nxn where n is large (approximately around 1500 - 2000). I want to find the inverse of this matrix in C. Since I'm new to C, I started with a 3 x 3 matrix and working around to generalize it…
Cherry
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Tensorflow compute multiplication by binary matrix

I have my data tensor which is of the shape [batch_size,512] and I have a constant matrix with values only of 0 and 1 which has the shape [256,512]. I would like to compute efficiently for each batch the sum of the products of my vector (second…
Codevan
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Create a binary matrix where columns equals rows

I am trying to run a regression of a list of bond's values against the credit (S&P) rating of the bond. For that I am trying to create a binary matrix of where the columns (a list of all available S&P credit rating [AAA, AA+,..., BBB-, etc..]). My…
Banana Republic
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Columnwise removal of first ones from binary matrix. MATLAB

I have some binary matrix. I want to remove all first ones from each column, but keep one if this value is alone in column. I have some code, which produces correct result, but it looks ugly- I should iterate through all columns. Could You give me a…
zlon
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Most efficient way to work with HUGE binary matrix?

I have a huge binary matrix, like 100000 x 100000. Reading this article http://www.cs.up.ac.za/cs/vpieterse/pub/PieterseEtAl_SAICSIT2010.pdf, I seemed to understand that the best tradeoff to memorize and work with a binary matrix is using…
Draxent
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How to efficiently store and manipulate sparse binary matrices in Octave?

I'm trying to manipulate sparse binary matrices in GNU Octave, and it's using way more memory than I expect, and relevant sparse-matrix functions don't behave the way I want them to. I see this question about higher-than-expected sparse-matrix…
hoc_age
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In Matlab: make mask from volume's outline

I've been struggling for a while to find a good solution to the problem described below. I want to avoid for loops but feel my Matlab skills are inadequate to do otherwise. I have a 3D position matrix of size 329x230x105. This defines a 3d volume of…
user1641496
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octave binary matrix for gnuplot

I need help in understanding how to use this octave script http://www.gnuplotting.org/code/save_binary_matrix.m to generate a binary matrix that I want to plot with gnuplot. Any suggestion will be appreciated even just a web link that would help me…
Mareczek
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Generation of matrix with sum 1 for each row and at least 1 assignment for each column

How can I create a binary matrix where each column sums to 1 and in the columns is >= 1? I need to build n*m matrices to perform assignments in an algorithm.
user21559
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Masking the columns of pytorch matrix

I have a matrix of shape (batch_size, N, N) and a masking tensor of shape (batch_size, N). I want to put -infinity values only for the columns (and not rows) of the matrix, according to the given mask.
Codevan
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Enforce binary coefficients in Logistic Regression

I am facing a classification problem in which I need to classify samples based on the presence or absence of features. The data matrix X is a binary scipy.sparse.csr_matrix. I tried to fit a LogisticRegression with penalty='l1' and C=0.5, which…
Damien Lancry
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Existence of path in binary matrix with specified directions

I have a binary matrix (N*M) filled with 0 and 1. Example: (S, 1, 1, 1, 0) (1, 0, 0, 0, 1) (1, 1, 0, 0, 1) (1, 0, 1, 1, D) The Startpoint S is the top-lefthand-corner and the Destination D is the buttom-righthand corner. Starting at S the following…
Dom
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Coder for a Hamming code of arbitrary length (binary matrix-vector multiplication, on a CPU, platform independent)

The problem seems quite suited for a GPU, FPGA, etc. (because it's quite parallel); but I'm looking for a CPU-based and somewhat architecture independent solution right now. I think a good answer could be just some unimplemented pseudo-code, but my…
user2373145
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