3272 search results for "MAP"

Fantastic presentations from R using slidify and rCharts

August 27, 2013
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Fantastic presentations from R using slidify and rCharts

Dr. Ramnath Vaidyanathan of McGill University gave an excellent presentation at a joint Data Visualization DC/Statistical Programming DC event on Monday, August 19 at nclud, on two R projects he leads -- slidify and rCharts. After the evening, all I can say is, Wow!! It's truly impressive to see what can be...

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From SVG to probability distributions [with R package]

August 25, 2013
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From SVG to probability distributions [with R package]

Hey, To illustrate generally complex probability density functions on continuous spaces, researchers always use the same examples, for instance mixtures of Gaussian distributions or a banana shaped distribution defined on with density function: If we draw a sample from this distribution using MCMC we obtain a plot like this one: Clearly it doesn’t really look

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‘Tis the Season for September Bearishness?

August 22, 2013
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‘Tis the Season for September Bearishness?

Is September Bearish? Traders love discussing seasonality, and September declines in US equity markets are a favorite topic. Historically September has underperformed every other month of the year, offering a mean return of -.56% on the S&P 500 index from 1950 to 2012; 54% of Septembers were bearish over the same period – more than any other month. Empirically, September...

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‘Tis the Season for September Bearishness?

August 22, 2013
By
‘Tis the Season for September Bearishness?

Is September Bearish? Traders love discussing seasonality, and September declines in US equity markets are a favorite topic. Historically September has underperformed every other month of the year, offering a mean return of -.56% on the S&P 500 index from 1950 to 2012; 54% of Septembers were bearish over the same period – more than any other month. Empirically, September...

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R and PMML Support

August 21, 2013
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R and PMML Support

A PMML package for R that exports all kinds of predictive models is available directly from CRAN.Traditionally, the pmml package offered support for the following data mining algorithms:ksvm (kernlab): Support Vector Machinesnnet: Neural Networksrpart:...

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Time-series forecasting: Bike Accidents

August 20, 2013
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Time-series forecasting: Bike Accidents

About a year ago I posted this video visualization of all the reported accidents involving bicycles in Montreal between 2006 and 2010. In the process I also calculated and plotted the accident rate using a monthly moving average. The results followed a pattern that was for the most part to be expected. The rate shoots up

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Step by step to build my first R Hadoop System

August 20, 2013
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Step by step to build my first R Hadoop System

by Yanchang Zhao, RDataMining.com After reading documents and tutorials on MapReduce and Hadoop and playing with RHadoop for about 2 weeks, finally I have built my first R Hadoop system and successfully run some R examples on it. My experience … Continue reading →

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Warrior Zombies from Outer Space II: Mayhem Unleashed

August 20, 2013
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Warrior Zombies from Outer Space II: Mayhem Unleashed

Given the speed at which I consume them, it's only justified that the first post on this blog is about movies. (Although, by that logic, it could have equally well been about sandwiches, Nutella, or tissue paper. Note to self: Look for a Nutella consumption dataset) Anyway, this post is about movie taglines - specifically, the words that...

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Working with climate data from the web in R

August 17, 2013
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Working with climate data from the web in R

I recently attended ScienceOnline Climate, a conference in Washington, D.C. at AAAS. You may have heard of the ScienceOnline annual meeting in North Carolina - this was one of their topical meetings focused on Climate Change. I moderated a session on working with data from the web in R, focusing on climate data. Search Twitter for...

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Working with climate data from the web in R

August 17, 2013
By
Working with climate data from the web in R

I recently attended ScienceOnline Climate, a conference in Washington, D.C. at AAAS. You may have heard of the ScienceOnline annual meeting in North Carolina - this was one of their topical meetings focused on Climate Change. I moderated a session on working with data from the web in R, focusing on climate data. Search Twitter for...

Read more »

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