3741 search results for "gis"

Open PHACTS from R

December 21, 2013
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Nothing much going to say about it, and just to report some progress:

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24 Days of R: Day 20

December 20, 2013
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24 Days of R: Day 20

Some time ago, I was doing some analysis and trying to determine whether or not there was a predictive variable for a binomial response. I ran logistic regressions for about half a dozen variables in different combinations and nothing showed a fit of any significance. Well, almost nothing. I had measured the response against date.

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lmer vs Stan for a somewhat involved dataset.

December 17, 2013
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Here is a comparison of lmer vs Stan output on a mildly complicated dataset from a psychology expt. (Kliegl et al 2011). The data are here: https://www.dropbox.com/s/pwuz1g7rtwy17p1/KWDYZ_test.rda.The data and paper available from: http://openscience.u...

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A Review of Risk Parity

December 17, 2013
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A Review of Risk Parity

What is risk parity (RP)? Simply put, it is a method of allocating equal risk shares to each asset in the portfolio. In more traditional allocation schemes, equity, being the riskiest asset (and hence providing the highest reward), has typically received the lion’s share. With RP, equalization of risk contribution means that equity and other

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A Review of Risk Parity

December 17, 2013
By
A Review of Risk Parity

What is risk parity (RP)? Simply put, it is a method of allocating equal risk shares to each asset in the portfolio. In more traditional allocation schemes, equity, being the riskiest asset (and hence providing the highest reward), has typically received the lion’s share. With RP, equalization of risk contribution means that equity and other

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New version of analogue on CRAN

December 14, 2013
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It has been almost a year since the last release of the analogue package. At lot has happened in the intervening period and although I’ve been busy with a new job in a new country and coding on several other R packages, activity on analogue has also progressed a pace. As the version 0.12-0 of the package hits a...

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Nuclear vs Green Energy: Share the Wealth or Get Your Own?

December 12, 2013
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Nuclear vs Green Energy: Share the Wealth or Get Your Own?

Thanks to Ontario Open Data, a survey dataset was recently made public containing peoples’ responses to questions about Ontario’s Long Term Energy Plan (LTEP).  The survey did fairly well in terms of raw response numbers, with 7,889 responses in total … Continue reading →

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Learn R and/or Data Management from Home January or April

December 11, 2013
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Learn R and/or Data Management from Home January or April

If you want to learn R, or improve your current R skills, join me for two workshops that I’m offering through Revolution Analytics in January and April. If you already know another analytics package, the workshop, Intro to R for … Continue reading →

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Writing papers using R Markdown

Writing papers using R Markdown

Writing papers using R Markdown I have been watching the activity in RStudio and knitr for a while, and have even been using Rmd (R markdown) files in my own work as a way to easily provide commentary on an actual dataset analysis. Yihui has proposed writing papers in markdown and posting them to a blog as a way...

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Creating awesome reports for multiple audiences using knitrBootstrap

December 10, 2013
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Creating awesome reports for multiple audiences using knitrBootstrap

As a biostatistics student, I use R very frequently when analyzing data. At the same time, I interact with other researchers, some who know how to use R (R crowd) and some who don't (yet!): no-R crowd. This means that I have to be able to communicate my results to two crowds. It is important that I can quickly...

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