Monthly Archives: January 2007

DAWeb – Decision Analysis Society

This post is a bit of a digression from previous specific software tool discussions, but interesting nonetheless since so many people don’t really think of Decision Support and Analysis as an area of study. Decision Analysis is a broad area … Continue reading

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Norm and Missing Data options

During the 1980s Rubin, Little and others established the statistical foundations of Missing Data problems. A Bayesian statistical justification for Multiple Imputation methods provided a principled approach to “fill in” missing data and pooling estimates across solutions based on completed … Continue reading

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DEW – Experimental Design program

DEW is a web based program to help plan Design of Experiments(DOE) designs. Currently block designs, general factorial designs, response surface designs, and more are available. Some output is available as cut-n-paste tables, other options include R code or GenStat … Continue reading

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MNP – Multinomial Probit Regression models

MNP is a useful R program for modeling discrete choices, such as choosing among a finite number of alternatives. What makes this an interesting alternative to software such as Stata or Limdep is that model parameters are estimated via Bayesian … Continue reading

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Copula – modeling bivariate structural dependence

The word ‘copula’ originates from the Latin noun for a “link or tie” that connects two different things. Over the last decade or so, Copulas have found a niche in Economics and Finance for risk modeling of complex bivariate relationships. … Continue reading

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