May 2015

What data science software tools do you use?

May 11, 2015 | David Smith

KDnuggets is once again running its annual poll of data science software tools, now in its 16th year. If you'd like to participate, visit the KDnuggets poll page and answer the question, "What Predictive Analytics, Data Mining, Data Science software/tools you used in the past 12 months?". The poll allows ... [Read more...]

Playing with elastichoney data in R

May 11, 2015 | Bob Rudis (@hrbrmstr)

Work has kept myself & @jayjacobs quite busy of late, but a small data set posted by @jw_sec this morning made for an opportunity for a quick blog post to show how to do some data maniupation and visualization in R for both security and non-security folk (hey, this may ... [Read more...]

Upcoming Tutorial: Analyzing US Census Data in R

May 11, 2015 | Ari Lamstein

Today I am pleased to announce that on May 21 I will run a tutorial titled Analyzing US Census Data in R. While I have spoken at conferences before, this is my first time running a tutorial. My hope is that everyone who participates will learn something interesting about the demographics ... [Read more...]

Coal and the Conservatives

May 11, 2015 | diffuseprior

Interesting election results in the UK over the weekend, where the Conservatives romped to victory. This was despite a widespread consensus that neither the Conservative or Labour party would get a majority. This was a triumph for uncertainty and random error over the deterministic, as none of the statistical forecasts ...
[Read more...]

use clusterProfiler as an universal enrichment analysis tool

May 11, 2015 | R on Guangchuang Yu

clusterProfiler supports enrichment analysis of both hypergeometric test and gene set enrichment analysis. It internally support Gene Ontology analysis of about 20 species, Kyoto Encyclopedia of Genes and Genomes (KEGG) with all species that have annotation available in KEGG database, DAVID annotation, Disease Ontology and Network of Cancer Genes (via DOSE ...
[Read more...]

Read A Block of Spreadsheet with R

May 10, 2015 | statcompute

In R, there are two ways to read a block of the spreadsheet, e.g. xlsx file, as the one shown below. The xlsx package provides the most intuitive interface with readColumns() function by explicitly defining the starting and the ending columns and rows. However, if we can define a ...
[Read more...]

arbitrary distributions with set correlation

May 10, 2015 | xi'an

A question recently posted on X Validated by Antoni Parrelada: given two arbitrary cdfs F and G, how can we simulate a pair (X,Y) with marginals  F and G, and with set correlation ρ? The answer posted by Antoni Parrelada was to reproduce the Gaussian copula solution: produce (X’,Y’) ...
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U-boats in WW-II

May 10, 2015 | Wingfeet

This is the time when we celebrate the end of the second world war in The Netherlands, so I thought to do somwthig with data from that era. One of the things I enjoyed were books on the sea warfare, such as 'The Cruel Sea'by Nicholas Monsarrat. In that... [Read more...]

ITS-90 temperature scale

May 9, 2015 | Dan Kelley Blog/R

Introduction Recently, oce has been gaining flexibility in terms of conductivities stored in data files. This is necessitated by the fact that RBR files store conductivity in mS/cm, whereas calculations for seawater properties use the unitless conductivity ratio. With the CTD code under examination for this work, it might ... [Read more...]

To Difference or Not To Difference?

May 9, 2015 | statcompute

In the textbook of time series analysis, we’ve been taught to difference the time series in order to have a stationary series, which can be justified by various plots and statistical tests. In the real-world time series analysis, things are not always as clear as shown in the textbook. ...
[Read more...]

Who Came Second in the UK Election?

May 8, 2015 | Kieran Healy

The UK’s election results are being digested by the chattering classes. So, yesterday afternoon I thought I’d see if I could grab the election data to make some pictures. Because the BBC has sane HTML structure, this proved a lot more strai... [Read more...]

In case you missed it: April 2015 roundup

May 8, 2015 | David Smith

In case you missed them, here are some articles from April of particular interest to R users. Joseph Rickert reviews the inaugural New York City R User Conference, featuring Andrew Gelman. Engineer Vineet Abraham compares performance benchmarks for R and Revolution R Open on OS X and Ubuntu. R was ... [Read more...]
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