FitExpectationMaximization: Expectation-Maximization (EM) algorithm to recover missing...

Description Usage Arguments Value Author(s) References

Description

Expectation-Maximization (EM) algorithm to recover missing observations in a time series , as described in A. Meucci, "Risk and Asset Allocation", Springer, 2005, section 4.6.2 "Missing data".

Usage

1

Arguments

X

: [matrix] (T x N) of data

Value

E_EM : [vector] (N x 1) expectation

S_EM : [matrix] (N x N) covariance matrix

Y : [matrix] (T x N) updated data

CountLoop : [scalar] number of iterations of the algorithm

Author(s)

Xavier Valls flamejat@gmail.com

References

A. Meucci - "Exercises in Advanced Risk and Portfolio Management" http://symmys.com/node/170, "E 177 - Expectation-Maximization algorithm for missing data: formulas" See Meucci's script for "FitExpectationMaximization.m"

Dempster, A. P. and Laird, M. N. and Rubin, D. B. - "Maximum Likelihood from Incomplete Data Via the EM Algorithm", Journal of the Royal Statistical Society, 1977 vol 39 pag. 1-22.

Bilmes, J. A.- "A Gentle Tutorial of the EM Algorithm and its Application to Parameter Estimation for Gaussian Mixture and Hidden Markov Models", 1998.


R-Finance/Meucci documentation built on May 8, 2019, 3:52 a.m.