I want to generate a random binary matrix, so I’m using W=np.random.binomial(1, p, (n,n)). It works fine, but I want a constraint that no row is just of 0s. I create the following function: It also works fine, but it seems to me too inefficient. Is there a faster way to create this constraint? Answer Wh…
Tag: matrix
How to make recursive function hold it’s original parameter value?
I’m trying to write a function that calculates the determinant of a square matrix using recursion. The parameter of the oldest function – the first one called – changes to the matrix returned by scale_down() and I don’t know why. I tried substituting “matrix” with “va…
pandas – creating new rows of combination with value of 0
I have a pandas dataframe like user_id music_id has_rating A a 1 B b 1 and I would like to automatically add new rows for each of user_id & music_id for those users haven’t rated, like user_id music_id has_rating A a 1 A b 0 B a 0 B b 1 for each of user_id and music_id combination pairs those
Generating 2D matrix in python with all the elements is 0
I’m making a game in python. The map of the game is a stored as matrix with number of line and column are equal, the matrix look kind of like this: I want to make a matrix generator to store it in ram when the game is openned in stead of store the whole matrix like that in the game
How to put number of a particular element in a particular row and column constraints in a matrix?
I have to basically create a symmetric matrix of NxN. Which has 1s and 0s randomly populated into it. However the only constraint is I need only one ‘1’ in any row and any column. I wrote a code to generate the matrix but it has more than one ‘1’ in any row or column. I need to follow …
Python, plot matrix diagonal elements
I have an 120×70 matrix of which I want to graph diagonal lines. for ease of typing here, I will explain my problem with a smaller 4×4 matrix. index 2020 2021 2022 2023 0 1 2 5 7 1 3 5 8 10 0 1 2 5 3 1 3 5 8 4 I now want to graph for example
string to complex matrix representation in python
I have the following example string: s =”1 1+in1-i 0″ Now I have to turn this string into a complex matrix. I am aware of the np.matrix() function but it is not designed for a complex matrix. Maybe some of you can provide me some ideas of how I can go forward. I also tried to split at n but
is it possible to generate a list in list for desired numbers?
I wanted to generate a list in list : now, I have basically two options, either I input the list through a text file or I should generate the list by itself. is it possible to generate this type of list by itself using nested loops? I wanted to put -1 at the place of the middle zero of each
Changing graph dataset matrices from sparse format to dense
I am trying to use the CoRA dataset to train a graph neural network on tensorflow for the first time. The features and adjacency matrices provided by the dataset comes in a sparse representation but I don’t need it here. Thus, I want to use numpy’s todense() but it turns out it doesn’t exist…
Scale/resize a square matrix into a larger size whilst retaining the grid structure/pattern (Python)
Like above, I want to retain the same ‘grid’ format whilst increasing the dimensions of the 2D array. How would I go about doing this? I assume the original matrix can only be scaled up by an integer n. Answer You can use numba if performance is of importance (similar post) with no python jitting …