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Ambarish Jash


University of Colorado, Boulder

26 total contributions since 2009

Currently I am the chief research analyst at WAVi Co.
Professional Interests: Signal Processing, Machine Learning, Content based information retrieval

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Submitted


Eigen Function of the Laplacian
The main file Diffusion_Family.m gives a low dimensional embedding in 3 different ways.

6 years ago | 4 downloads |

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Submitted


Mandelbrot Set
Generating a mandelbrot set

6 years ago | 8 downloads |

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Submitted


Kernel PCA
Non-linear dimension reduction using kernel PCA.

6 years ago | 82 downloads |

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Responded


Re: Generalized Ridge Regression
Hi Vivek try the function ridge, if you want to implement a linear ridge regression. If you want a kernel version of ridge regre...

6 years ago | 4385 views

Submitted


Kernel Ridge Regression
This is ridge regression implemented using the Gaussian Kernel.

6 years ago | 4 downloads |

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Responded


Re: A Vector of Vectors
consider 2 vectors a and b of different sizes. try this a = {a}; %converting to type cell b = {b}; c = [a b]; %storing in a vec...

7 years ago | 2822 views

Responded


Re: working with functions
do u want to pass a parameter in the function "UmbralOptimo2" and return a value from that function.

7 years ago | 1965 views

Responded


Re: saving graphs without ploting them
try set(gcf,Visible,'off') this should work

7 years ago | 1726 views

Submitted


Variance while using xcov/xcorr
The code calculates the variance in a calculated correlation function

7 years ago | 1 downloads |

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Responded


Re: error messages when trying to load large matrix
how large is your matrix

7 years ago | 1894 views

Submitted


Lorenz attractor
Propagation of a gaussian pdf through a nonlinear equation

7 years ago | 7 downloads |

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Responded


Re: Minimize RAM usage?
you may also want to check the command 'pack'

7 years ago | 2109 views

Responded


Re: Minimize RAM usage?
you may also want to check the command 'pack'

7 years ago | 2109 views

Submitted


Speed using nvidia graphics card and accelerEyes jacket
The code tests the increase in speed up of matrix multiplication.

7 years ago | 3 downloads |

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Responded


Re: Using matlab to generate noise
this is the code for that x = [-pi:.05:pi]; noise = 0.3.*randn(1,size(x,2)) data = cos(x) + noise

7 years ago | 17646 views

Posted


Particle filter
Does anyone have a good online tutorial/book which will enable me to implement a basic particle filter. The algorithm is still v...

7 years ago | 1490 views

Responded


Re: Simple Matlab problem novice.
This is what u have written y = ((x.^4)*(1-x).^4)/(1-x.^2) This is what you need to do y = ((x.^4).*(1-x).^4)./(1-x.^2) Notice...

7 years ago | 5698 views

Responded


Re: running average
Try conv(ones(1,windowsize)/windowsize,data) and notice the similarity. Here is what is happening. Let y be the output, then y(1...

7 years ago | 3491 views

Responded


Re: performance measure of 3D struture
Hi Maya, For performance you could compare the time taken in CPU vs the time taken in a GPU. You could write your entire code su...

7 years ago | 1699 views

Responded


Re: argument in???
Use 'varargin'. Try it like this function [T,P] = atmos(alt,varargin) Then you need to find out the total number of input argume...

7 years ago | 939 views

Responded


Re: argument in???
function [T,P] = atmos(alt,varargin) Then you need to find out the total number of input arguments. To do that use nargin. Type ...

7 years ago | 939 views

Responded


Re: argument in???
Use 'varargin'. Try it like this function [T,P] = atmos(alt,varargin) Then you need to find out the total number of input argume...

7 years ago | 939 views

Responded


Re: display the mean in boxplots?
You can type help boxplot. But this is not the GUI rendering of help. Click on help and then product help. On the search bar typ...

7 years ago | 17339 views

Responded


Re: Martix inversion??
Try inv(M)

7 years ago | 1300 views

Responded


Re: Martix inversion??
Not sure what you mean. The matrix looks like it's 4x4. Even if it is ill conditioned I think inv(M) should do the job.

7 years ago | 1300 views

Posted


cpu frequency

7 years ago | 1013 views