PREDICTIVE ANALYTICS with MATLAB. ENSAMBLE METHODS and DISCRIMINANT ANAYSIS by J. Smith

Author:J. Smith [Smith, J.]
Language: eng
Format: azw3
Publisher: UNKNOWN
Published: 2017-04-27T04:00:00+00:00

6.4 How the predict Method Classifies

predict uses three quantities to classify observations: posterior probability, prior probability, and cost.

predict classifies so as to minimize the expected classification cost:

where

The space of X values divides into regions where a classification Y is a particular value. The regions are separated by straight lines for linear discriminant analysis, and by conic sections (ellipses, hyperbolas, or parabolas) for quadratic discriminant analysis.

6.4.1 Posterior Probability

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.