August 2017

Numerical Differentiation with Finite Differences in R

August 3, 2017 | Aaron Schlegel

Part 1 of 7 in the series Numerical AnalysisNumerical differentiation is a method of approximating the derivative of a function at particular value . Often, particularly in physics and engineering, a function may be too complicated to merit the work necessary to find the exact derivative, or the function itself... The post Numerical ...
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Rborist version 0-1.8 available from CRAN

August 3, 2017 | Mark Seligman

Version 0-1.8 of the Rborist implementation of the Random Forest (TM) algorithm is now available from CRAN. Although most changes involve refactoring to accommodate future updates, there are several bug fixes and enhancements worth mentioning. New option maxLeaf allows a limit to be set on the number of terminal nodes (... [Read more...]

Rborist version 0-1.8 available from CRAN

August 3, 2017 | Mark Seligman

Version 0-1.8 of the Rborist implementation of the Random Forest (TM) algorithm is now available from CRAN. Although most changes involve refactoring to accommodate future updates, there are several bug fixes and enhancements worth mentioning. New option maxLeaf allows a limit to be set on the number of terminal nodes (... [Read more...]

Generating Quadratic Primes: Euler Problem 27

August 2, 2017 | Peter Prevos

Solution to Euler Problem 27 using the R language. Find the product of the coefficients for the quadratic expression that produces the most primes. Continue reading → The post Generating Quadratic Primes: Euler Problem 27 appeared first on The Devil is in the Data. [Read more...]

Introducing the Recipe series

August 2, 2017 | R on francojc ⟲

The Recipe series: an overview My goal in this series is to explore the ‘why’ and the ‘how’ of doing quantitative language research. The content of this series will, in large part, overlap with resources available on doing Data Science, ge... [Read more...]

Fun data: open data that is fun to analyse

August 2, 2017 | Blog

Joe Russell, Adnan Fiaz Jeremy Singer-Vine sends out a newsletter every week where he highlights a number of interesting open datasets (you can explore all the datasets here). At Mango we are all for open data so we thought we would also share some of the open datasets we think ...
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Applications in energy, retail and shipping

August 2, 2017 | David Smith

The Solutions section of the Cortana Intelligence Gallery provides more than two dozen working examples of applying machine learning, data science and artificial intelligence to real-world problems. Each solution provides sample data, scripts for model training and evaluation, and reporting of predictions. You can deploy a complete stack in Azure ... [Read more...]

Data wrangling : Transforming (3/3)

August 2, 2017 | Vasileios Tsakalos

Data wrangling is a task of great importance in data analysis. Data wrangling, is the process of importing, cleaning and transforming raw data into actionable information for analysis. It is a time-consuming process which is estimated to take about 60-80% of analyst’s time. In this series we will go ... [Read more...]

Twitter Coverage of the ISMB/ECCB Conference 2017

August 2, 2017 | nsaunders

ISMB (Intelligent Systems for Molecular Biology – which sounds rather old-fashioned now, doesn’t it?) is the largest conference for bioinformatics and computational biology. It is held annually and, when in Europe, jointly with the European Conference on Computational Biology (ECCB). I’ve had the good fortune to attend twice: in ...
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elastic – Elasticsearch for R

August 2, 2017 | Scott Chamberlain

elastic is an R client for Elasticsearch elastic has been around since 2013, with the first commit in November, 2013. sidebar - 'elastic' was picked as a package named before the company now known as Elastic changed their name to Elastic. What is Elasticsearch? If you aren't familiar with Elasticsearch, it is ... [Read more...]

F-Test: Compare Two Variances in R

August 2, 2017 | Easy Guides

F-test is used to assess whether the variances of two populations (A and B) are equal. Contents When to you use F-test? Research questions and statistical hypotheses Formula of F-test Compute F-test in R R function Import and check your data into R Preleminary test to check F-test assumptions Compute ... [Read more...]

Five kinds of weather you’ll meet in America

August 1, 2017 | dan

K-MEANS CLUSTERING, A WORKHORSE OF DATA SCIENCE AND MACHINE LEARNING CLICK TO ENLARGE The USA is a large country. How different are people’s experiences of the weather depending on where they live? To look into this question, we downloaded high temperature data for over 1,300 airport weather stations in the ... [Read more...]

A Postcard from JSM

August 1, 2017 | R Views

Baltimore has the reputation of being a tough town: hot in the summer and gritty, but the convention center hosting the Joint Statistical Meetings is a pretty cool place to be. There are thousands of people here and so many sessions (over 600) that it’s just impossible to get an ...
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Transfer Learning with Keras in R

August 1, 2017 | Florian Teschner

In my last posts ([here](http://flovv.github.io/Logo_detection_deep_learning/ and here, I described how one can detect logos in images with R. The first results were promising and achieved a classification accuracy of ~50%. In this post i will detail h... [Read more...]

Monte Carlo Simulations in R

August 1, 2017 | anu - Journey of Analytics Team

In today’s tutorial, we are going to learn how to implement Monte Carlo Simulations in R. Logic behind Monte Carlo: Monte Carlo simulation (also known as the Monte Carlo Method) is a statistical technique that allows us to compute all the possible outcomes of an event. This makes it ...
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