chainerx.linalg.eigvalsh¶

chainerx.linalg.eigvalsh(a, UPLO='L')¶

Compute the eigenvalues of a real symmetric matrix.

Main difference from eigh: the eigenvectors are not computed.

Parameters

a (ndarray) – Real symmetric matrix whose eigenvalues and eigenvectors are to be computed.
UPLO (str) – Specifies whether the calculation is done with the lower triangular part of a (‘L’, default) or the upper triangular part (‘U’). (optional).

Returns

Returns eigenvalues as a vector.

Return type

ndarray

Note

The dtype must be float32 or float64 (float16 is not supported yet.)
Backpropagation requires eigenvectors and, therefore, is not implemented for this function. linalg.eigh should be used instead.