Community Profile # Orr Streicher

Last seen: 7 dagar ago Active since 2021

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maxk from subset of array
Hi, I would like to solve the following prblem: Lets say i have the vector :v=[10,22,3,-5,8,6,100,30,12,9] I want to find the...

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Difference between eigs and svds
Hi, Im trying to find the 6 smallest eigenvalues and thier coresponding eigevectors of a matrix L. i tried the 2 following com...

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Search window in KNN
Hi, I have a data marix D in size of Nxd where N is the number of samples (lets say 50,000) and d is a sample dimention (lets ...

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Hi, Does anyone know an afficient way to compute sparse adjacency matrix and Graph Laclcian directly from a data matrix ? I sa...

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Spiral density function implementation
Hi, I need to define a Spiral density function with parameters theat (the angle of the spiral) and r (the radius) Does anyone ...

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Define a density function and draw N samples of it
Hi, So i want to define a density function and draw N samples of it. does anyone know how can i do it? for example if i want ...

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Conditional normal random distribution
Hi, I would like to create a spiral in matlab while the radius is dependent on the angle theath in the following way: thate is...

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Efficient way to do elementry operations on sparse matrix
Hi, I am working with sparse matrices and i wonder if there is an efficient way to scan the elements of this kind of matrices a...

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fftfilt function inputs and output
Hi, Does the inputs and output of the function fftfilt should be in the time or frequency domain? i coundt understaned it bas...

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pos argument in steervec function
Hi, I would like to create a steering vector using steervec function. As far as i understand from the documentation the argume...

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Afficient way to create "sum matrix"
Hi, So its looks like i was happy too soon =P Since my vector g is very large ( vector in size of 65536) I got memrory error...

Question

Afficient way to create "sum matrix"
Hi, So i would like to implement a function that get a vector as input lets : g=[g1, g2, g3] and return a matrix that contain...

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Make a weight matrix sparce
Hi, I have an image in size of 256x256. I would like to implement an algorithem that use graph theory on this image so i wan...