23.09.2013 Views

Séparation de sources. Principes et algorithmes - Gretsi

Séparation de sources. Principes et algorithmes - Gretsi

Séparation de sources. Principes et algorithmes - Gretsi

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Algebraic tools Statistical tools Criteria Spatial whitening Tensors<br />

Compact notation<br />

Multi-linearity<br />

Linear change in contravariant spaces:<br />

<br />

=<br />

Denoted compactly<br />

T ′<br />

ijk<br />

Example: covariance matrix<br />

npq<br />

AinBjpCkqTnpq<br />

T ′ = (A, B, C) · T (18)<br />

z = Ax ⇒ Rz = (A, A) · Rx = A RxA T<br />

P.Comon & C.Jutten, Peyresq July 2011 BSS II.Tools and optimization criteria 47

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!