Questions tagged [polynomial]
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3
questions with no upvoted or accepted answers
1
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0answers
49 views
Difference Between a 1st Order SG Filter And a Least Squares Moving Average
I have been studying SG filters and i recently found another filter which seem to be commonly used in financial data smoothing which is the least-squares moving average, this filter is also called ...
1
vote
0answers
54 views
How to select the sign of the square root of each element of a DFT in obtaining the square root of a polynomial?
I want to find the square root of a polynomial by the following process:
Compute the N-element DFT of its coefficients, maybe padded with zeros.
Compute the complex square root of each of the N ...
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votes
1answer
194 views
numpy.linalg.lstsq underdetermined case
I would like to understand what I am doing wrong here.
I am trying to perform polynomial regression by minimizing the least squares, ||Au-y||^2, where y is the given data and A is the matrix where the ...
