Description Usage Arguments Value Author(s) References See Also Examples
This is a function that solves the L0 fused problem via the primal dual active set algorithm in sparse condition. It fits a piecewise constant regression model by minimizing the least squares error with constraints on the number of breaks in their discrete derivative.
1 | fsfused(y, s = 10, T, K.max=5)
|
y |
Response sequence to be fitted. |
s |
Number of knots in the piecewise constant(breaks in the derivative), default is 10. |
T |
Number of non-zero values in fitted coefficient. |
K.max |
The maximum number of steps for the algorithm to take before termination. Default is 5. |
y |
The observed response vector. Useful for plotting and other methods. |
beta |
Fitted value. |
v |
Primal coefficient. The indexes of the nonzero values correspond to the locations of the breaks. |
Canhong Wen, Xueqin Wang, Yanhe Shen, Aijun Zhang
Wen,C., Wang, X., Shen, Y., and Zhang, A. (2017). "L0 trend filtering", technical report.
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