1292 search results for "how to import image file to r"

Regularization implementation in R : Bais and Variance diagnosis

May 22, 2014
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Regularization implementation in R : Bais and Variance diagnosis

Welcome to this blog post. In previous posts I discussed about the linear regression and logistic regression in detail. We used Andrew NG’s ML class dataset to fit linear regression and logistic regression. We also discussed about step by step implementation in R along with cost function and gradient descent. In this post I will The post Regularization...

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The Purchase Funnel Survives the Consumer Decision Journey

May 19, 2014
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The Purchase Funnel Survives the Consumer Decision Journey

The journey metaphor is almost irresistible. All one needs is a starting point and a finish line, plus some notion of progression. Thus, life is a journey, and so is love. Why not apply the metaphor to your next purchase? McKinsey & Company takes s...

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Deploying Shiny Server on Amazon: Some Troubleshoots and Solutions

May 18, 2014
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Deploying Shiny Server on Amazon: Some Troubleshoots and Solutions

I really enjoyed Treb Allen‘s tutorial on deploying a Shiny server on an Amazon Cloud Instance. I used this approach for my shiny app that is a map highlighting the economic impact of the recent shale oil and gas boom on the places where the actual extraction happens. The easiest way to proceed is to

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The apply command 101

May 15, 2014
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The apply command 101

The goal of this blog entry is to introduce basic and essential information about the apply function. Even established R users get confused when considering this family of functions especially when observing how many of the them there are: apply, tapply, lapply, sapply, rapply, eapply, mapply. When I was new to R I was rarely

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qqman: an R package for creating Q-Q and manhattan plots from GWAS results

May 15, 2014
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qqman: an R package for creating Q-Q and manhattan plots from GWAS results

Three years ago I wrote a blog post on how to create manhattan plots in R. After hundreds of comments pointing out bugs and other issues, I've finally cleaned up this code and turned it into an R package.The qqman R package is on CRAN: http://cran.r-project.org/web/packages/qqman/The source code is on GitHub: https://github.com/stephenturner/qqmanIf you'd like to cite the...

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understanding complex and large industrial data (UCLID 2014)

May 15, 2014
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understanding complex and large industrial data (UCLID 2014)

Just received this announcement of the UCLID 2014 conference in Lancaster, July 1-2 2014: Understanding Complex and Large Industrial Data 2014, or UCLID, is a workshop which aims to provide an opportunity for academic researchers and industrial practitioners to work together and share ideas on the fast developing field of ‘big data’ analysis. This is

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Population Databrowser

May 14, 2014
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Population Databrowser

This entry is part 13 of 13 in the series Using RAt Mazama Science we produce web based tools for interrogating important datasets. We are proud to announce the release of a new Population databrowser that allows users to review …   read more ...

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Calendar Strategy: Fed Days

May 6, 2014
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Calendar Strategy: Fed Days

Today, I want to follow up with the Calendar Strategy: Option Expiry post. Let’s examine the importance of the FED meeting days as presented in the Fed Days And Intermediate-Term Highs post. Let’s dive in and examine historical perfromance of SPY during FED meeting days: Please note 100 day moving average filter above. If we

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7 R Quirks That Will Drive You Nutty

May 5, 2014
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7 R Quirks That Will Drive You Nutty

7 R Quirks That Will Drive You Nutty StumpedEvery language has its idiosyncrasies. Some “designer”“ type languages have less due to extreme thoughtfulness of language engineers. I suspect Julia for example has many less quirks. However, despite...

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Five Reasons to Teach Elementary Statistics With R: #3

May 4, 2014
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Five Reasons to Teach Elementary Statistics With R:  #3

Introduction Reason #3: RStudio’s shiny Examples “Slow” Simulation Understanding Model Assumptions Types of Error Illustrating Fine Points Playing Games

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