2297 search results for "time series"

Fast parallel computing with Intel Phi coprocessors

May 19, 2015
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Fast parallel computing with Intel Phi coprocessors

by Andrew Ekstrom Recovering physicist, applied mathematician and graduate student in applied Stats and systems engineering We know that R is a great system for performing statistical analysis. The price is quite nice too ;-) . As a graduate student, I need a cheap replacement for Matlab and/or Maple. Well, R can do that too. I’m running a large...

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Posterior predictive output with Stan

May 18, 2015
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Posterior predictive output with Stan

I continue my Stan experiments with another insurance example. Here I am particular interested in the posterior predictive distribution from only three data points. Or, to put it differently I have a customer of three years and I'd like to predict the expected claims cost for the next year to set or adjust the premium.The example is taken...

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Learning about classes in R with plot.bike()

May 16, 2015
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Learning about classes in R with plot.bike()

A useful feature of R is its ability to implement a function differently depending on the ‘class’ of the object acted on. This article explores this behaviour with reference to a playful modification of the ‘generic’ function plot() to allow plotting of cartoon bicycles. Although the example is quite simple and fun, the concepts it touches on are complex...

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Because it’s Friday: Love in the land of Facebook

May 15, 2015
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Because it’s Friday: Love in the land of Facebook

Today is my 11th wedding anniversary with my wonderful husband Jay, so it's a love-themed Friday post today. Jay and I met before Facebook was a thing, but we've been touched by the congratulations on our timelines today. Those timeline posts reveal a lot about you and your relationships, and last year the Facebook data science team published a...

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Advertising a Few Systematic ETFs (Strictly Of My Own Volition)

May 13, 2015
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Advertising a Few Systematic ETFs (Strictly Of My Own Volition)

This post will introduce several ETFs from Alpha Architect and Cambria Funds (run by Meb Faber) that I think readers … Continue reading →

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Using Azure as an R data source, Part 1

May 12, 2015
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Using Azure as an R data source, Part 1

by Gregory Vandenbrouck Software Engineer at Microsoft This post is the first in a series that covers pulling data from various Windows Azure hosted storage solutions (such as MySQL, or Microsoft SQL Server) to an R client on Windows or Linux. We’ll start with a relatively simple case of pulling data from SQL Azure to an R client on...

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Survival Analysis With Generalized Additive Models: Part V (stratified baseline hazards)

May 9, 2015
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Survival Analysis With Generalized Additive Models: Part V (stratified baseline hazards)

In the fifth part of this series we will examine the capabilities of Poisson GAMs to stratify the baseline hazard for survival analysis. In a stratified Cox model, the baseline hazard is not the same for all individuals in the study. Rather, it is assumed that the baseline hazard may differ between members of groups, even though it will

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Survival Analysis With Generalized Additive Models: Part V (stratified baseline hazards)

May 9, 2015
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Survival Analysis With Generalized Additive Models: Part V (stratified baseline hazards)

In the fifth part of this series we will examine the capabilities of Poisson GAMs to stratify the baseline hazard for survival analysis. In a stratified Cox model, the baseline hazard is not the same for all individuals in the study. Rather, it is assumed that the baseline hazard may differ between members of groups, even though it will

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Odd Connections Inside The NASDAQ-100

May 8, 2015
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Odd Connections Inside The NASDAQ-100

Distinguishing the signal from the noise requires both scientific knowledge and self-knowledge (Nate Silver, author of The Signal and the Noise) Analyzing the evolution of NASDAQ-100 stock prices can discover some interesting couples of companies which share a strong common trend despite of belonging to very different sectors. The NASDAQ-100 is made up of 107 … Continue reading...

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Run Shiny app on a Ubuntu server on the Amazon Cloud

May 8, 2015
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This guide is more for self reference than anything else.  Since I struggled for two days trying to find all the correct setting to complete this task, gathering information from several websites, I decided to write a little guide on this blog so ...

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