matfaust::proj::splincol Class Reference

Functor for the SPLINCOL projector. More...

Public Member Functions
function	splincol (shape, k, varargin)
Public Member Functions inherited from matfaust::proj::proj_gen
function	subsref (self, S)

Additional Inherited Members
Protected Attributes inherited from matfaust::proj::proj_gen
Property	constraint

Detailed Description

Functor for the SPLINCOL projector.

It's the union of SPLIN and SPCOL projectors.

Usage

    splincol(shape, k): returns a SPLINCOL projector (functor), shape defines the size of the input matrix (e.g. [1, 10]), k defines the sparsity of the output matrix (k nnz coefficients per row or per column).
    splincol(shape,k,'normalized', bool,'pos', bool): the optional parameters are set. By default both normalized and pos are false.

Parameters

shape	vector of size 2, to define the size of the input matrix.
k	the sparsity parameter.
'normalized',true	normalizes the projection image according to its Frobenius norm.
'normalized',false	(the default) no normalization.
'pos',true	skips the negative values (replaced by zero) of the input matrix.
'pos',false	(the default) negative values are not skipped.

Return values

splincol

projector.

Example

>> import matfaust.proj.*
>> rng(42)
>> M = rand(5, 5)
 
M =
 
    0.3745    0.1560    0.0206    0.1834    0.6119
    0.9507    0.0581    0.9699    0.3042    0.1395
    0.7320    0.8662    0.8324    0.5248    0.2921
    0.5987    0.6011    0.2123    0.4319    0.3664
    0.1560    0.7081    0.1818    0.2912    0.4561
 
>> p1 = splin(size(M), 3, 'normalized', false);
>> p2 = spcol(size(M), 3, 'normalized', false);
>> p = splincol(size(M), 3, 'normalized', false);
>> p1M = p1(M)
 
p1M =
 
    0.3745         0         0    0.1834    0.6119
    0.9507         0    0.9699    0.3042         0
    0.7320    0.8662    0.8324         0         0
    0.5987    0.6011         0    0.4319         0
         0    0.7081         0    0.2912    0.4561
 
>> p2M = p2(M)
 
p2M =
 
         0         0         0         0    0.6119
    0.9507         0    0.9699    0.3042         0
    0.7320    0.8662    0.8324    0.5248         0
    0.5987    0.6011    0.2123    0.4319    0.3664
         0    0.7081         0         0    0.4561
 
>> p(M)
 
ans =
 
    0.3745         0         0    0.1834    0.6119
    0.9507         0    0.9699    0.3042         0
    0.7320    0.8662    0.8324    0.5248         0
    0.5987    0.6011    0.2123    0.4319    0.3664
         0    0.7081         0    0.2912    0.4561
 
>> p1M(p1M == p2M) = 0;
>> p1M + p2M
 
ans =
 
    0.3745         0         0    0.1834    0.6119
    0.9507         0    0.9699    0.3042         0
    0.7320    0.8662    0.8324    0.5248         0
    0.5987    0.6011    0.2123    0.4319    0.3664
         0    0.7081         0    0.2912    0.4561
 
>> all(all(p1M + p2M == p(M)))
 
ans =
 
 logical
 
    1
 
>>

Constructor & Destructor Documentation

splincol()

function matfaust::proj::splincol::splincol	(	shape	,
		k	,
		varargin
	)

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The documentation for this class was generated from the following file:

• splincol.m