3137 search results for "gis"

From Whale Calls to Dark Matter: Competitive Data Science with R and Python

July 12, 2013
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From Whale Calls to Dark Matter: Competitive Data Science with R and Python

Back in June I gave a fun talk at Montreal Python on some of my dabbling in the competitive data science scene. The good people at Savior-fair Linux recorded the talk and have edited it all together into a pretty slick video. If you can spare twenty-minutes or so, have a look. If you want

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Generate UUIDs in R

July 11, 2013
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Here a snippet of R to generate a Version 4 UUID. Dunno why there wouldn't be an official function for that in the standard libraries, but if there is, I couldn't find it. ## Version 4 UUIDs have the form: ## xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx ## where x is any hexadecimal digit and ## y is one...

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UK dialect maps

July 10, 2013
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UK dialect maps

A few weeks ago Joshua Katz published some awesome dialect maps of the United States with the help of a web interface coded with Shiny. Now we propose a similar setup for the UK data based on our rapporter.net "R-as-a-Service" with some further add-ons, like regional comparison and dynamic textual analysis of the differences: You may...

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Modeling Residential Electricity Usage with R – Part 2

July 8, 2013
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Modeling Residential Electricity Usage with R – Part 2

(This article was first published on Commodity Stat Arb, and kindly contributed to R-bloggers) I can’t believe it has been nearly 6 months since I last posted.  Given the sustained heat it seemed like a good idea to finish off this subject. As hinted at in my last post, temperature is the missing variable to make sense of Residential...

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Veterinary Epidemiologic Research: Modelling Survival Data – Parametric and Frailty Models

July 5, 2013
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Veterinary Epidemiologic Research: Modelling Survival Data – Parametric and Frailty Models

Last post on modelling survival data from Veterinary Epidemiologic Research: parametric analyses. The Cox proportional hazards model described in the last post make no assumption about the shape of the baseline hazard, which is an advantage if you have no idea about what that shape might be. With a parametric survival model, the survival time

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ggplot2 Chloropleth of Supreme Court Decisions: A Tutorial

July 4, 2013
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ggplot2 Chloropleth of Supreme Court Decisions: A Tutorial

I don't do much GIS but I like to. It's rather enjoyable and involves a tremendous skill set. Often you will find your self grabbing data sets from some site, scraping, data cleaning and reshaping, and graphing. On the ride … Continue reading →

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Using neural networks for credit scoring: a simple example

July 4, 2013
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Using neural networks for credit scoring: a simple example

Credit scoring is the practice of analysing a persons background and credit application in order to assess the creditworthiness of the person. One can take numerous approaches on analysing this creditworthiness. In the end it basically comes down to first selecting the correct independent variables (e.g. income, age, gender) that lead to a given level of creditworthiness. In...

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Creating good looking survival curves – the ‘ggsurv’ function

July 4, 2013
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Creating good looking survival curves – the ‘ggsurv’ function

This is a guest post by Edwin Thoen Currently I am doing my master thesis on multi-state models. Survival analysis was my favourite course in the masters program, partly because of the great survival package which is maintained by Terry Therneau. The …Read more »

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My take on the USA versus Western Europe comparison of GM corn

July 4, 2013
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My take on the USA versus Western Europe comparison of GM corn

A few days ago I came across Jack Heinemann and collaborators’ article (Sustainability and innovation in staple crop production in the US Midwest, Open Access) comparing the agricultural sectors of USA and Western Europe‡. While the article is titled around the word sustainability, the main comparison stems from the use of Genetically Modified crops in

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Using R and Integer Programming to find solutions to FlowFree game boards

July 3, 2013
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Using R and Integer Programming to find solutions to FlowFree game boards

Using R and Integer Programming to find solutions to FlowFree game boards What is FlowFree?A popular game (iOS/Android) on a square board with simple rules. As the website states: Connect matching colors with pipes to create a flow. Pair all color...

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