search for: wden

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2010 Sep 15
1
optim with BFGS--what may lead to this, a strange thing happened
Dear R Users on a self-written function for calculating maximum likelihood probability (plz check function code at the bottom of this message), one value, wden, suddenly jump to zero. detail info as following: w[11]=2.14 lnw =2.37 2.90 3.76 ... regw =1.96 1.77 1.82 .... wden=0.182 0.178 0.179... w[11]=2.14 lnw=2.37 2.90 3.76 ... regw =1.96 1.77 1.82 .... wden=0.182 0.179 0.180... w[11]=-0.51 lnw=2.37 2.90 3.76 ... regw=57.92 57....
2010 Sep 07
5
question on "optim"
Hey, R users I do not know how to describe my question. I am a new user for R and write the following?code for a dynamic labor economics?model and use OPTIM to get optimizations and parameter values. the following code does not work due to the?equation: ?? wden[,i]<-dnorm((1-regw[,i])/w[5])/w[5] where w[5]?is one of the parameters (together with vector a, b and other elements in vector w)?need to be estimated. if I delete the w[5] from the upper equation. that is: ?wden[,i]<-dnorm(1-regw[,i]) optim will give me the estimated parameters. but the...
2020 Feb 27
2
[PATCH] Update the 5 year logo to 10 year logo
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