Working with air quality and meteorological data Exercises (Part-4)

September 26, 2017
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Working with air quality and meteorological data Exercises (Part-4)

Atmospheric air pollution is one of the most important environmental concerns in many countries around the world, and it is strongly affected by meteorological conditions. Accordingly, in this set of exercises we use openair package to work and analyze air quality and meteorological data. This packages provides tools to directly import data from air quality Related exercise sets: Working with...

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Microsoft Cognitive Services Vision API in R

September 26, 2017
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Microsoft Cognitive Services Vision API in R

Microsoft Cognitive Services Vision API in R A little while ago I did a brief tutorial of the Google Vision API using RoogleVision created by Mark Edmonson. I couldn’t...

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13 new R Jobs for R users (2017-09-26) – from all over the world

September 26, 2017
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13 new R Jobs for R users (2017-09-26) – from all over the world

To post your R job on the next post Just visit  this link and  post  a new R job  to the R community. You can post a job for  free  (and...

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R live class | R for Data Science | Oct 4-5 Milan

September 26, 2017
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R live class | R for Data Science | Oct 4-5 Milan

R for Data Science is our first course of the autumn term. It takes place in October 4-5 in a location close to Milano Lima. If you want to deepen...

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When are Citi Bikes Faster than Taxis in New York City?

September 26, 2017
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When are Citi Bikes Faster than Taxis in New York City?

Every day in New York City, millions of commuters take part in a giant race to determine transportation supremacy. Cars, bikes, subways, buses, ferries, and more all compete against...

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Data.Table by Example – Part 1

September 26, 2017
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Data.Table by Example – Part 1

For many years, I actively avoided the data.table package and preferred to utilize the tools available in either base R or dplyr for data aggregation and exploration. However, over...

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How to Create an Interactive Infographic

September 25, 2017
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How to Create an Interactive Infographic

An interactive infographic can be used to communicate a lot of information in an engaging way. With the right tools, they are also relatively straightforward to create. In this...

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Regular Expression Searching within Shiny Selectize Objects

September 25, 2017
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Regular Expression Searching within Shiny Selectize Objects

regexSelect is a small package that uses Shiny modules to solve a problem in Shiny selectize objects - regular expression (regex) searching. You can quickly...

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News Roundup from Microsoft Ignite

September 25, 2017
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It's been a big day for the team here at Microsoft, with a flurry of announcements from the Ignite conference in Orlando. We'll provide more in-depth details in the...

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Custom Level Coding in vtreat

September 25, 2017
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Custom Level Coding in vtreat

One of the services that the R package vtreat provides is level coding (what we sometimes call impact coding): converting the levels of a categorical variable to a meaningful...

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Time Series Analysis in R Part 2: Time Series Transformations

September 25, 2017
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Time Series Analysis in R Part 2: Time Series Transformations

In Part 1 of this series, we got started by looking at the ts object in R and how it represents time series data. In Part 2, I’ll discuss...

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Speeding Up Digital Arachnids

September 25, 2017
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Speeding Up Digital Arachnids

spiderbar, spiderbar Reads robots rules from afar. Crawls the web, any size; Fetches with respect, never lies. Look Out! Here comes the spiderbar. Is it fast? Listen bud, It's...

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Survival Analysis with R

September 24, 2017
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Survival Analysis with R

With roots dating back to at least 1662 when John Graunt, a London merchant, published an extensive set of inferences based on mortality records, survival analysis is one of...

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Super excited for R promises

September 24, 2017
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Super excited for R promises

We at Appsilon are excited about RStudio introducing promises in R quite soon which is going to be a huge step forward in programming in R (we have already...

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eXtremely Boost your machine learning Exercises (Part-1)

September 24, 2017
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eXtremely Boost your machine learning Exercises (Part-1)

eXtreme Gradient Boosting is a machine learning model which became really popular few years ago after winning several Kaggle competitions. It is very powerful algorithm that use an ensemble...

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RcppGSL 0.3.3

September 24, 2017
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A maintenance update RcppGSL 0.3.3 is now on CRAN. It switched the vignette to the our new pinp package and its two-column pdf default. The RcppGSL package provides an...

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Postgresql + R Sandbox

September 23, 2017
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Postgresql + R Sandbox

ElephantSQL ElephantSQL offers a free instance of Postgresql, with a limit of 20 MB and 5 concurrent connections. For example, you can upload a shiny application that depends on data...

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RcppCNPy 0.2.7

September 23, 2017
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A new version of the RcppCNPy package arrived on CRAN yesterday. RcppCNPy provides R with read and write access to NumPy files thanks to the cnpy library by Carl...

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RcppClassic 0.9.8

September 23, 2017
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A bug-fix release RcppClassic 0.9.8 for the very recent 0.9.7 release which fixes a build issue on macOS introduced in 0.9.7. No other changes. Courtesy of CRANberries, there are...

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Upcoming data preparation and modeling article series

September 23, 2017
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Upcoming data preparation and modeling article series

I am pleased to announce that vtreat version 0.6.0 is now available to R users on CRAN. vtreat is an excellent way to prepare data for machine learning, statistical...

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Hacking statistics or: How I Learned to Stop Worrying About Calculus and Love Stats Exercises (Part-9)

September 23, 2017
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Hacking statistics or: How I Learned to Stop Worrying About Calculus and Love Stats Exercises (Part-9)

Statistics are often taught in school by and for people who like Mathematics. As a consequence, in those class emphasis is put on leaning equations, solving calculus problems and...

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How Random Forests improve simple Regression Trees?

September 22, 2017
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How Random Forests improve simple Regression Trees?

By Gabriel Vasconcelos Regression Trees In this post I am going to discuss some features of Regression Trees an Random Forests. Regression Trees are know to be very unstable,...

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Welcome to R/exams

September 22, 2017
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Welcome to R/exams

Welcome everybody, we are proud to introduce the brand new web page and blog http://www.R-exams.org/. This provides a central access point for the open-source software “exams” implemented in the R system for...

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Big Data Analytics with H20 in R Exercises -Part 1

September 22, 2017
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Big Data Analytics with H20 in R Exercises -Part 1

We have dabbled with RevoScaleR before , In this exercise we will work with H2O , another high performance R library which can handle big data very effectively .It...

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Tutorial: Launch a Spark and R cluster with HDInsight

September 22, 2017
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If you'd like to get started using R with Spark, you'll need to set up a Spark cluster and install R and all the other necessary software on the...

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Multi-Dimensional Reduction and Visualisation with t-SNE

September 22, 2017
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Multi-Dimensional Reduction and Visualisation with t-SNE

t-SNE is a very powerful technique that can be used for visualising (looking for patterns) in multi-dimensional data. Great things have been said about this technique. In this blog...

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My advice on dplyr::mutate()

September 22, 2017
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My advice on dplyr::mutate()

There are substantial differences between ad-hoc analyses (be they: machine learning research, data science contests, or other demonstrations) and production worthy systems. Roughly: ad-hoc analyses have to be correct...

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Mining USPTO full text patent data – Analysis of machine learning and AI related patents granted in 2017 so far – Part 1

September 21, 2017
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Mining USPTO full text patent data – Analysis of machine learning and AI related patents granted in 2017 so far – Part 1

The United States Patent and Trademark office (USPTO) provides immense amounts of data (the data I used are in the form of XML files). After coming across these datasets,...

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Will Stanton hit 61 home runs this season?

September 21, 2017
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Will Stanton hit 61 home runs this season?

So...

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