Thanks for constrctive comments. I was very careful when I wrote the code. I wrote many functions and then wrapped up to get a single function. Originally, I used optim() to get MLE, it was at least 10 times slower than the code based on Newton method. I also vectorized all objects whenever possible. -- View this message in context: http://r.789695.n4.nabble.com/Memory-Issue-tp2335860p2336687.html Sent from the R help mailing list archive at Nabble.com.
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