Community Profile # konoha

Last seen: 24日 前 2016 以来アクティブ

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construct wavelet function and its scaling function
cons_c = [1+sqrt(3), 3+sqrt(3), 3-sqrt(3), 1-sqrt(3)]/4; cons_w = [-(sqrt(3)-1), 3-sqrt(3), -(3+sqrt(3)), 1+sqrt(3)]/4; iters ...

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construct wavelet function and its scaling function
i am using the dilation equation to construct wavelet function and its scaling function. The process is simple, use Haar scaling...

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denosing signal using wavedec and waverec
I am trying to use wavedec and waverec to denosing signals. suppose i have a signal x with some gaussian noise and then apply wa...

2ヶ月 前 | 0 件の回答 | 0

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Denoise MNIST image with wavelet
I am learning wavelet and using it to denoise MNIST image with white noise, so far, the results i got are not pleasant. what can...

3ヶ月 前 | 1 件の回答 | 0

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implementation of mini-batch stochastic gradient descent
I implemented a mini-batch stochastic gradien descent but counldn't find the bug in my code. I used this implement to do a clas...

6ヶ月 前 | 1 件の回答 | 0

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question on elapsed time
I am working a problem that require to understand why each operation takes different time. So, I have a A = randn(100,100)...

5年弱 前 | 2 件の回答 | 0

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use sound for a function
I have a function f(t) = sin(t) + sin(3t/2) + sin(5t/4) and I am trying to use sound for f. Fs=8000; Ts=1/Fs; t=[0:Ts:0...

5年以上 前 | 1 件の回答 | 0

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compute Fast Fourier Transform matrix
I am trying to make a matrix like F = [1 1 1; 1 e^(1*2pi) e^(2*2pi); 1 e^(2*2pi) e^4*2pi], what I hav...

5年以上 前 | 1 件の回答 | 0

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Use lsqnonlin to find the best angle of a linear transformation
I have a object=[1 0 0; 0 0 2], then it transforms to [0.9557 0.0965 0.9648; -0.3381 0.0158 1.8977] by a certain angle. I wan...

5年以上 前 | 0 件の回答 | 0

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Using ode45 to solve second order differential system
I am trying to solve a system m_1x'' + k_1x = 0; m_2x'' + k_2x = 0, with m_1,m_2,k_1,k_2 are some constants. I read this po...

5年以上 前 | 1 件の回答 | 0

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surface plot with a matrix
I am trying to graph a surface with a diagonal matrix, the equation I am trying graph is f = x^TDx, x is a 2 by 1 vector and D i...

5年以上 前 | 1 件の回答 | 0