1537 search results for "Regression"

sab-R-metrics: Kernel Density Smoothing

May 25, 2011
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sab-R-metrics: Kernel Density Smoothing

Last time I left you, I had gone over some basics of doing loess regression in R. If you remember, loess is a sort of regression that allows wigglyness in your regression of some dependent variable Y on some independent variable X (I will generalize t...

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sab-R-metrics: Kernel Density Smoothing

May 25, 2011
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sab-R-metrics: Kernel Density Smoothing

Last time I left you, I had gone over some basics of doing loess regression in R. If you remember, loess is a sort of regression that allows wigglyness in your regression of some dependent variable Y on some independent variable X (I will generalize t...

Read more »

A simple Big Data analysis using the RevoScaleR package in Revolution R

May 24, 2011
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A simple Big Data analysis using the RevoScaleR package in Revolution R

This post from Stephen Weller is part of a series from members of the Revolution Analytics Engineering team. Learn more about the RevoScaleR package, available free to academics as part of Revolution R Enterprise — ed. The RevoScaleR package, installed with Revolution R Enterprise, offers parallel external memory algorithms that help R break through memory and performance limitations. RevoScaleR...

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A simple Big Data analysis using the RevoScaleR package in Revolution R

May 24, 2011
By
A simple Big Data analysis using the RevoScaleR package in Revolution R

This post from Stephen Weller is part of a series from members of the Revolution Analytics Engineering team. Learn more about the RevoScaleR package, available free to academics as part of Revolution R Enterprise — ed. The RevoScaleR package, installed with Revolution R Enterprise, offers parallel external memory algorithms that help R break through memory and performance limitations. RevoScaleR...

Read more »

The distribution of interestingness

The distribution of interestingness

On April 22, David Landy posed a question about the distribution of interestingness values in response to my April 3rd post on “Interestingness Measures.”  He noted that the survey paper by Hilderman and Hamilton that I cited there makes the following comment: “Our belief is that a useful measure of interestingness should generate index values that are reasonably distributed throughout...

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The distribution of interestingness

The distribution of interestingness

On April 22, David Landy posed a question about the distribution of interestingness values in response to my April 3rd post on “Interestingness Measures.”  He noted that the survey paper by Hilderman and Hamilton that I cited there makes the following comment: “Our belief is that a useful measure of interestingness should generate index values that are reasonably distributed throughout...

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[Project Euler] – Problem 58

May 21, 2011
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[Project Euler] – Problem 58

Starting with 1 and spiralling anticlockwise in the following way, a square spiral with side length 7 is formed. 37 36 35 34 33 32 31 38 17 16 15 14 13 30 Read More: 597 Words Totally

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Long XLU Short SPY

May 20, 2011
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Long XLU Short SPY

THIS IS NOT INVESTMENT ADVICE.  YOU ARE RESPONSIBLE FOR YOUR OWN GAINS AND LOSSES. I spend my days and nights wondering what a bond manager should do if he/she doesn’t like bonds, but also cannot sit in 0% cash.  I generally dislike spreads...

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[Project Euler] – Problem 57

May 19, 2011
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It is possible to show that the square root of two can be expressed as an infinite continued fraction. √ 2 = 1 + 1/(2 + 1/(2 + 1/(2 + … ))) = 1.414213… By expanding this for the first four iterations, we get: Read More: 547 Words Totally

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Resources for Learning R

May 17, 2011
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The information below will be periodically updated at the folowing permanent link: http://www.backsidesmack.com/r-resources/ Searching for information on R sucks. Not only is the language name a letter of the alphabet (an ignominy it shares with C and some less well known languages), there is Pearson’s r and the coefficient of determination, R squared! if you…

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