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J AI


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13 total contributions since 2019

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Question


Deep Neural Network training fails
I have written my own code for DNN making it flexible in terms of choosing number of hidden layers and number of nodes in each l...

7 days ago | 0 answers | 0

0

answers

Question


Sort rows of a table by column within a variable
I have a table: T = a v ________ _______________________________ ...

10 days ago | 1 answer | 0

1

answer

Question


Finding unique rows using "uniquetol" from top
It seems like there is no option for finding unique rows from top using uniquetol unlike unique where there is option for the ar...

10 days ago | 1 answer | 0

1

answer

Question


Combination of rows of two different matrices
Sorry if this is a repeated question but I failed to find an answer myself. I have two matrices: A = [-0.6, -0.2; -60, ...

14 days ago | 2 answers | 0

2

answers

Question


Help with column-wise matrix manipulation without for loop
I have the matrix (which is basically the matrix representation of several lines) A = [10 5 10 % first two columns are...

1 month ago | 1 answer | 0

1

answer

Question


Generating dispersed (non-integer) random matrix/array that sums to a particular value
One of the most suggested (in fact the only one to my finding) for generating random numbers (<1) that will sum to 1 is Random V...

1 month ago | 1 answer | 0

1

answer

Question


Issue with finding intersection between randomly generated matrices
I have two matrices randomly generated A and A_new (subset of A). When I use the intersect command, very surprisingly it negates...

1 month ago | 1 answer | 0

1

answer

Question


Bug in 2020a using "ismember"?
When I am trying to use the "ismember" command in 2020a, I get werid stuffs. e.g., A = [1 2 3; 4 5 6; 7 8 9]; B = ...

1 month ago | 0 answers | 1

0

answers

Question


Finding last non-zero rows for individual columns of a matrix without loops
I have the following code: A =[1 2 3; 1 0 1; 0 5 1; 1 0 2; 2 3 ...

2 months ago | 1 answer | 0

1

answer

Question


A complicated matrix manipulation
So I have a matrix, let's say A = [1 2; 1 0; 3 2; 0 1; 2 1; 1 2]; [r,c] = size(A); In general, wha...

2 months ago | 1 answer | 0

1

answer

Question


Finding rows/indices by comparing individual elements of rows of one matrix to another
Let's say I have a matrix and a matrix as follows: and I want to find the indices of rows in such that the row elements a...

2 months ago | 1 answer | 0

1

answer

Question


DQN weight update using Mean-squared error (MSE)
I am desiging a DQN from scratch. I am stuck because I am not sure how to update the weights in the policy network. The structu...

9 months ago | 1 answer | 0

1

answer

Question


How do I create a matrix surrounding the center element?
I want to create a matrix (n by n, n being odd) that has its central element fixed, and its surrounding elements increasing/decr...

9 months ago | 2 answers | 0

2

answers