NASRIN AKTER

Last seen: 1 year ago | Active since 2021

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Question

How can I convert 1D sparse data into learnable format for machine learning?
Hello I wanted to do sequence-to-sequence regression where I have sparse 1D arrays as inputs and 1D signals as outputs. I tried...

2 years ago | 1 answer | 0

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answer

Question

If one normalized vector is subtracted from another normalized vector, is it necessary to normalize the result?
Hello I was following the example: https://www.mathworks.com/help/signal/ug/ocular-artifact-removal-from-electroencephalogram-...

3 years ago | 1 answer | 0

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Question

How to modify spectrograms so that there is no effect of amplitude on their classification?
Hello Is there any way to bring different classes of spectrograms to comparable amplitude levels so that when they are used for...

3 years ago | 1 answer | 0

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Question

How to define 'layers' for single to multiple sequence regression using lstm network?
Hello I was trying to modify the example: https://www.mathworks.com/help/signal/ug/ocular-artifact-removal-from-electroenceph...

3 years ago | 1 answer | 0

1

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Question

For machine learning classification between two samples, how can I focus on certain frequency components as the separating feature?
I have two samples which, when exposed to ultrasound, emit their unique frequency responses. As can be seen in the attached figu...

3 years ago | 2 answers | 0

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answers

Question

Need help understanding regression plots
Hello I have two datasets which I used interchangeably to train and test a function fitting neural network (fitnet). For exampl...

3 years ago | 1 answer | 0

1

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Question

How to feed a feature matrix for each class in multiclass classification?
Hello I am using 'emd' for feature extraction. In my case, I will create 5 IMFs and extract 2 features from each so it would be...

3 years ago | 1 answer | 0

1

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Question

If I feed signals at given conditions, can machine learning predict how the signal at a certain condition would look like?
Hello I have a mixed signal separation problem where I can provide the individual signals (or their stft) at certain conditions...

3 years ago | 1 answer | 0

1

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Question

stft plot doesn't match FFT results
Hello I have a signal sampled at 250e6 samples/s. The FFT result of the signal looks correct with fundamental at 1.1 MHz and so...

3 years ago | 1 answer | 0

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Question

Can I do Independent component analysis with just one row of data which is a mixture of two source signals?
Hello I have a signal with just one row but it is a combination of two source signals. I intend to use some machine learning te...

3 years ago | 1 answer | 0

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Question

How to set the order in iircomb filter?
Hello I am trying to get rid of the fundamental (1.1 MHz) and 6 harmonics (2.2 MHz, 3.3 MHz...6.6 MHz) from my signal sampled a...

3 years ago | 1 answer | 0

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