Rebalancing history

March 19, 2020 | 0 Comments

Our last post on rebalancing struck an equivocal note. We ran a thousand simulations using historical averages across different rebalancing regimes to test whether rebalancing produced better absolute or risk-adjusted returns. The results suggested it did not. But we noted many problems with the tests—namely, unrealistic return distributions and ...
[Read more...]

RProtoBuf 0.4.16: Now with JSON

March 19, 2020 | 0 Comments

A new release 0.4.16 of RProtoBuf is now on CRAN. RProtoBuf provides R with bindings for the Google Protocol Buffers (“ProtoBuf”) data encoding and serialization library used and released by Google, and deployed very widely in numerous projects a... [Read more...]

Shiny: Performance tuning with future & promises – Part 1

March 19, 2020 | 0 Comments

In our previous article about Shiny we shared our experiences with load testing and horizontal scaling of apps. We showed the design of a process from a proof of concept to a company-wide application. The second part of the blog series focuses on the R packages future & promises, which are ...
[Read more...]

Extended floating point precision in R with Rmpfr

March 18, 2020 | 0 Comments

I learnt from a recent post on John Cook’s excellent blog that it’s really easy to do extended floating point computations in R using the Rmpfr package. Rmpfr is R’s wrapper around the C library MPFR, which stands for “Multiple … Continue reading →
[Read more...]

COVID-19 Tracker: Days since N

March 18, 2020 | 0 Comments

There’s no shortage of dashboards and data-visualizations covering some aspect of the ongoing coronavirus pandemic, but not having come across a tool that allowed me to easily compare countries myself, I developed this COVID-19 Tracker shiny app both...
[Read more...]

parzer: Parse Messy Geographic Coordinates

March 18, 2020 | 0 Comments

parzer is a new package for handling messy geographic coordinates. The first version is now on CRAN, with binaries coming soon hopefully (see note about installation below). The package recently completed rOpenSci review. parzer motivation The idea for this package started with a tweet from Noam Ross (https://twitter.com/... [Read more...]

Simulating COVID-19 interventions with R

March 18, 2020 | 0 Comments

Tim Churches is a Senior Research Fellow at the UNSW Medicine South Western Sydney Clinical School at Liverpool Hospital, and a health data scientist at the Ingham Institute for Applied Medical Research. This post examines simulation of COVID-19 spread using R, and how such simulations can be used to understand ...
[Read more...]

nnlib2Rcpp: a(nother) R package for Neural Networks

March 18, 2020 | 0 Comments

For anyone interested, nnlib2Rcpp is an R package containing a number of Neural Network implementations and is available on GitHub. It can be installed as follows (the usual way for packages on GitHub): library(devtools) install_github("VNNikolaidis/nnlib2Rcpp") The NNs are implemented in C++ (using  nnlib2 C++ ... [Read more...]

RcppCCTZ 0.2.7

March 18, 2020 | 0 Comments

A new release 0.2.7 of RcppCCTZ is now at CRAN. RcppCCTZ uses Rcpp to bring CCTZ to R. CCTZ is a C++ library for translating between absolute and civil times using the rules of a time zone. In fact, it is two libraries. One for dealing with civil tim... [Read more...]

Community of Bioinformatics Software Developers (CDSB): The story of a diversity and outreach hotspot in Mexico that hopes to empower local R developers

March 18, 2020 | 0 Comments

By Leonardo Collado Torres, Ph. D., Research Scientist, Lieber Institute for Brain Development, Brain genomics #rstats coder working w/ @andrewejaffe @LieberInstitute. @lcgunam @jhubiostat @jtleek alumni. @LIBDrstats @CDSBMexico co-founder I have... The post Community of Bioinformatics Software Developers (CDSB): The story of a diversity and outreach hotspot in Mexico that hopes ...
[Read more...]

Survey Results: What Degree is Best for Data Science?

March 17, 2020 | 0 Comments

The Survey The survey What Degree is Best for Data Science? ran from  February 9 through March 12, 2020 asking participants 4 questions: Answers about self: Q1: What is the highest level of school degree you have completed? Q2: Which of the following best describes the field in which you received your highest degree?  ...
[Read more...]

The ulimate package for correlations (by easystats)

March 17, 2020 | 0 Comments

The correlation package The easystats project continues to grow with its more recent addition, a package devoted to correlations. Check-out its webpage here! It’s lightweight, easy to use, and allows for the computation of many different kinds of correlations, such as partial correlations, Bayesian correlations, multilevel correlations, polychoric correlations, ...
[Read more...]

A noisy start

March 17, 2020 | 0 Comments

I was sure I had released this… Honestly, I thought the new version of ambient had landed on CRAN a year ago. What does that say about me as a developer? Probably not something very positive. One reason is probably that ambient is one of my smaller packages mostly made ...
[Read more...]

Shiny Contest 2020 deadline extended

March 17, 2020 | 0 Comments

The original deadline for Shiny Contest 2020 was this week, but given that many of us have had lots of unexpected changes to our schedules over the last week due to the COVID-19 outbreak, we have decided to extend the deadline by two weeks. If you’ve been planning to submit ... [Read more...]

The ulimate package for correlations (by easystats)

March 17, 2020 | 0 Comments

The correlation package The easystats project continues to grow with its more recent addition, a package devoted to correlations. Check-out its webpage here! It’s lightweight, easy to use, and allows for the computation of many different kinds of correlations, such as partial correlations, Bayesian correlations, multilevel correlations, polychoric correlations, ...
[Read more...]

paletteer: Hundreds of color palettes in R

March 17, 2020 | 0 Comments

Looking for just the right colors for your data visualization? I often cover tools to pick color palettes on my website (e.g. here, here, or here) and also host a comprehensive list of color packages in my R programming resources overview. However, paletteer is by far my favorite package ...
[Read more...]
1 43 44 45 46 47 1,662