simulate AR time series generating routine
cluster initial commit
added comment
generate debug series
parameter class to hold parameter of one ARMA series
initialize and basic structure
remove unused
added calculate p(x|phi)
	modified:   cluster.m
added phi0
	modified:   parameter.m
Calculate P(wk|xi,Theta) as in (3) on page 4, initial syntax correct, not tested
calc Q
M-step,update P_w
update sigma
calc A
calc B
calc C, correct error in A, clearer
calc D
calc Wk
calc Uk
calc delta, update Theta array
convergence criteria