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2017 Nov 07
0
Using MLE on a somewhat unusual likelihood function
...lues > rarely go as high as 8 or low as -5. > If you're getting infinite likelihoods, something may be needing a rethink, but first this: I don't think -sum(lnwagevec>-200 & ln2wagevec<200, na.rm=TRUE) does what I think you think it does.... Presumably you wanted -sum(lnagevec[lnwagevec>-200 & ln2wagevec<200], na.rm=TRUE) -pd > Thank you in advance to anyone responding! > /Hugo > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more,...
2017 Nov 07
2
Using MLE on a somewhat unusual likelihood function
So I am trying to use the mle command (from stats4 package) to estimate a number of parameters using data but it keeps throwing up this error message: Error in solve.default(oout$hessian) : Lapack routine dgesv: system is exactly singular: U[1,1] = 0 This error sometimes indicates that the list of starting values is too far from optimum but this is unlikely since I picked values close to where