411 search results for "pca"

Data analysis of the French football league players with R and FactoMineR

October 3, 2016
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Data analysis of the French football league players with R and FactoMineR

This year we’ve had a great summer for sporting events! Now autumn is back, and with it the Ligue 1 championship. Last year, we created this data analysis tutorial using R and the excellent package FactoMineR for a course at ENSAE (in French). The dataset contains the physical and technical abilities of French Ligue 1 and Ligue 2 players. … Continue...

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Customer Segmentation Part 3: Network Visualization

September 30, 2016
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Customer Segmentation Part 3: Network Visualization

This post is the third and final part in the customer segmentation analysis. The first post focused on K-Means Clustering to segment customers into distinct groups based on purchasing habits. The second post takes a different approach, using Pricipal C...

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DESeq2 Course Work

September 28, 2016
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DESeq2 Course Work

The following workflow has been designed as teaching instructions for an introductory course to RNA-seq data analysis with DESeq2. The course is designed for PhD students and will be given at the University of Münster from 10th to 21st of October...

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exprAnalysis package

September 27, 2016
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exprAnalysis package

I created the R package exprAnalysis designed to streamline my RNA-seq data analysis pipeline. Below you find the vignette for installation and usage of the package. This package combines functions from various packages used to analyze and visuali...

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Learning Statistics on Youtube

September 19, 2016
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youtube

Youtube.com is the second most accessed website in the world (surpassed only by its parent, google.com). It has a whopping 1 billion unique views a month. It is a force to be reckoned with. In the video sharing platform, there are many brilliant and hard-working content creators producing high-quality and free educational videos...

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Analyzing World Bank data with WDI, googleVis Motion Charts

September 17, 2016
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Analyzing World Bank data with  WDI, googleVis Motion Charts

Recently I was surfing the web, when I came across a real cool post New R package to access World Bank data, by Markus Gesmann on using googleVis and motion charts with World Bank Data. The post also introduced me to Hans Rosling, Professor of Sweden’s Karolinska Institute. Hans Rosling, the creator of the famous … Continue...

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Clustering using the ClusterR package

September 11, 2016
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Clustering using the ClusterR package

This blog post is about clustering and specifically about my recently released package on CRAN, ClusterR. The following notes and examples are based mainly on the package Vignette. Cluster analysis or clustering is the task of grouping a set...

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The start of satRdays

September 8, 2016
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The start of satRdays

This post was originally shared on the R Consortium blog.Almost 200 people from 19 countries registered for the first satRday conference which was held last Saturday, September 3rd, in Budapest. The final count showed that nearly 170 R users spent 12 hours at the conference venue attending workshops, regular and lighting talks, social events and...

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Showing a different approach to making statistical tests

September 5, 2016
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Showing a different approach to making statistical tests

In this post, I will talk about an alternative way to choose quantiles (and more broadly, decision boundaries) for statistical tests, the ones you choose in order to have a 95% confidence interval (5% of type-I error). I will then show that this idea can be used to combine tests. I will use some illustrations in R to make...

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Gotta catch them all

August 21, 2016
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Gotta catch them all

Introduction When data becomes high-dimensional, the inherent relational structure between the variables can sometimes become unclear or indistinct. One, might want to find clusters for numerous amounts of reasons - me, I want to use it to better unde...

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