decreasement of likelihoodfunction

[cwwsunny6]

Dear @brandynbok and @eric-qian ,

First of all, thank you for the code, which is very well written and documented!
I have a question about the likelihood in the interation of EM step . When I set the initial value of the parameter to a random number,the value of likelihood decrease with the interation of EM .
ooking forward to hearing more from you on this matter.
Thank you for your answer.

Regards
Weiwei Cao