Monthly Archives: December 2010

Rethinking ‘loess’ for Binomial-Response Pitch F/X Strike Zone Maps

December 5, 2010
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Rethinking ‘loess’ for Binomial-Response Pitch F/X Strike Zone Maps

So after a long hiatus, I'm back for today. I've been crazy busy with a number of different things--including getting engaged and helping plan out wedding dates and things of that sort--and unfortunately have not kept up here on this blog (or on Fanta...

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Pareto plot party!

December 5, 2010
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Pareto plot party!

A Pareto plot is an enhanced bar chart. It comes in useful for deciding which bars in your bar chart are important. To see this, take a look at some made up DVD sales data. set.seed(1234) dvd_names <- c("Toy Tales 3", "The Dusk Saga: Black Out", "Urban Coitus 2", "Dragon Training for Dummies", "Germination", "Fe

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Genetic optimization for Trading Strategies using Rapidminer and R

December 5, 2010
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Genetic optimization for Trading Strategies using Rapidminer and R

That is the second tutorial of Rapidminer and R extension for Trading and the first in Video. In the last example the ROC obtained is not as good as it should be to make money in this business, To improve the strategy we will try to optimize the trading strategy. Different methods of optimization and objective functions...

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Genetic optimization for Trading Strategies using Rapidminer and R

December 5, 2010
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Genetic optimization for Trading Strategies using Rapidminer and R

That is the second tutorial of Rapidminer and R extension for Trading and the first in Video. In the last example the ROC obtained is not as good as it should be to make money in this business, To improve the strategy we will try to optimize the trading strategy. Different methods of optimization and objective functions...

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GLMM and R issues

December 4, 2010
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GLMM and R issues

I have been trying to run a Generalized Linear Mixed Model (GLMM) for some count data with repeated measures on sub-sampled sites and fixed effects at the site level with covariates at both the sub-plot and time levels.  Plus there are different n...

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Comparison of results

December 4, 2010
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I am doing a simple comparison of different estimation procedures in dealing with a simple binomial model. Here is where I got started:---------------------------------------------library(INLA)library(npmlreg)library(MCMCglmm)library(DPpackage)data(See...

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Comparison of results

December 4, 2010
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I am doing a simple comparison of different estimation procedures in dealing with a simple binomial model. Here is where I got started:---------------------------------------------library(INLA)library(npmlreg)library(MCMCglmm)library(DPpackage)data(See...

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Root finding

December 4, 2010
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Numerical root finding methods use iteration, producing a sequence of numbers that hopefully converge towards a limits which is a root. In this post, only focus four basic algorithm on root finding, and covers bisection method, fixed point method, Newton-Raphson method, and secant method.Read More: 1886 Words Totally

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Root finding

December 4, 2010
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Numerical root finding methods use iteration, producing a sequence of numbers that hopefully converge towards a limits which is a root. In this post, only focus four basic algorithm on root finding, and covers bisection method, fixed point method, Newton-Raphson method, and secant method.Read More: 1896 Words Totally

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Le Monde puzzle [48: resolution]

December 4, 2010
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Le Monde puzzle [48: resolution]

The solution to puzzle 48 given in Le Monde this weekend is rather direct (which makes me wonder why the solution for 6 colours is still unavailable..) Here is a quick version of the solution: Consider one column, 1 say. Since 326=5×65+1, there exists one value c with at least 66 equal to c. Among

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