Principal Component Analysis (Princomp)

2 visualizzazioni (ultimi 30 giorni)
Thanos
Thanos il 22 Gen 2013
I am using the function princomp and I obtain different results(i.e. SCORES) when I am using Matlab 2009b and Matlab 2012b. Does anyone know why this difference?Thank you in advance.

Accedi per rispondere a questa domanda.

Risposte (1)

Tom Lane
Tom Lane il 24 Gen 2013
Are there just some columns whose signs differ between the two SCORES matrices? That can happen as a result of a change in svd or some other MATLAB matrix computation, and it should not affect your results. For example, the first component is the linear subspace of maximum variance, but you can represent that line by a vector pointing in either direction from the origin.

Categorie

Scopri di più su Dimensionality Reduction and Feature Extraction in Help Center e File Exchange

Tag

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by