PHP 7.2.7 Released

# Lapack::leastSquaresBySVD

(PECL lapack >= 0.1.0)

Lapack::leastSquaresBySVDSolve the linear least squares problem, using SVD

### Descrierea

public static array Lapack::leastSquaresBySVD ( array `\$a` , array `\$b` )

Solve the linear least squares problem, find min x in || B - Ax || Returns an array representing x. Expects arrays of arrays, and will return an array of arrays in the dimension B num cols x A num cols. Uses SVD with a divide and conquer algorithm.

`a`

Matrix A

`b`

Matrix B

### Valorile întoarse

Returns the solution as an array of arrays.

### Exemple

Example #1 Using Lapack::leastSquaresBySVD():

``` <?php  \$a = array(      array( 1.44,  -7.84,  -4.39,   4.53),      array(-9.96,  -0.28,  -3.24,   3.83),      array(-7.55,   3.24,   6.27,  -6.64),      array( 8.34,   8.09,   5.28,   2.06),      array( 7.08,   2.52,   0.74,  -2.47),      array(-5.45,  -5.70,  -1.19,   4.70),  );  \$b = array(      array( 8.58,   9.35),      array( 8.26,  -4.43),      array( 8.48,  -0.70),      array(-5.28,  -0.26),      array( 5.72,  -7.36),      array( 8.93,  -2.52),             );  \$result = Lapack::leastSquaresBySVD(\$a, \$b);    ?> ```