search for: elsaess

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2007 Sep 21
2
Likelihood ration test on glm
...a likelihood ratio test in place of waldtest. Ideally I'd like to provide two glm models, the second a submodel of the first, in the style of lrt (http://www.pik-potsdam.de/~hrust/tools/farismahelp/lrt.html). [lrt takes farimsa objects] Does anyone know of such a likelihood ratio test? Chris Elsaesser, PhD Principal Scientist, Machine Learning SPADAC Inc. 7921 Jones Branch Dr. Suite 600 McLean, VA 22102 703.371.7301 (m) 703.637.9421 (o)
2007 Sep 06
3
Lisp-like primitives in R
...ogram in Common Lisp and use R for statistical analysis. While in R I miss the power and ease of use of Lisp, especially its many primitives such as find, member, cond, and (perhaps a bridge too far) loop. Has anyone created a package that includes R analogs to a subset of Lisp functions? Chris Elsaesser, PhD Principal Scientist, Machine Learning SPADAC Inc. 7921 Jones Branch Dr. Suite 600 McLean, VA 22102 703.371.7301 (m) 703.637.9421 (o)
2007 May 17
4
using lm() with variable formula
...l functions, each taking a different number of arguments? I'd like to construct a string or list representing the varialbes in the formula and apply lm(), so to say [I'm mainly a Lisp programmer where that part would be very simple. Anyone have a Lisp API for R? :-}] Thanks, chris Chris Elsaesser, PhD Principal Scientist, Machine Learning SPADAC Inc. 7921 Jones Branch Dr. Suite 600 McLean, VA 22102 703.371.7301 (m) 703.637.9421 (o)
2007 Apr 09
1
Modified Sims test
...e." Journal of Econometrics, 83, 161-194. Granger, C.W.J. (1969), "Investigating Causal Relations by Econometric Methods and Cross-Spectral Methods," Econometrica, 34, 424-438. Sims, C. (1972), "Money, Income and Causality," American Economic Review, 62, 540-552. Chris Elsaesser, PhD 703.637.9421 (o) Principal Geospatial Scientist 703.371.7301 (m) SPADAC Inc. 7921 Jones Branch Dr. Suite 600 McLean, VA 22102
2009 Mar 12
1
alternative to EMV?
...he missing values with values that are, based on the 'training set', representative. EMV appeared to be the solution but it has been taken off CRAN and I can't seem to install the archived version by hand on my Windoz machine. Does anyone know of an alternative to EMV? Thanks, Chris Elsaesser, PhD 703.371.7301 (m) Principal Engineer 703.983.4116 (o) Information Discovery & Understanding The MITRE Corporation McLean, VA