In our last post, we applied machine learning to the Capital Aset Pricing Model (CAPM) to try to predict future returns for the S&P 500. This analysis was part of our overall project to analyze the various methods to set return expectations when seeking to build a satisfactory portfolio. Others include historical averages and discounted cash flow models we...
RBloggers|RBloggers-feedburner I am happy to announce that RAthena-1.9.0 and noctua-1.7.0 have been released onto the cran. They both bring two key features: More stability when working with AWS Athena, focusing on AWS Rate Exceeded throttling errors New helper function to convert AWS S3 backend files to save cost NOTE: RAthena and noctua features correspond to each other, as a result I will refer...
I’ve had the privilege of working with Trevor Hastie on an extension of the glmnet package which has just been released. In essence, the glmnet() function’s family parameter can now be any object of class family. This enables the user … Continue reading →
The YUIMA Project is an open source academic project aimed at developing a complete environment for estimation and simulation of Stochastic Differential Equations and other Stochastic Processes via the R package called yuima and its Graphical User Interface yuimaGUI. Quickstart # install the package install.packages('yuima') # load the package require(yuima) The YUIMA Object The main object is the yuima object which allows to describe the model...
The YUIMA Project is an open source academic project aimed at developing a complete environment for estimation and simulation of Stochastic Differential Equations and other Stochastic Processes via the R package called yuima and its Graphical User Interface yuimaGUI. Quickstart # install the package install.packages('yuima') # load the package require(yuima) The YUIMA Object The main object is the yuima object which allows to describe the model...
Hugo Bowne-Anderson, the host of DataFramed, the DataCamp podcast, recently interviewed Katharine Jarmul, Head of Product at Cape Privacy. Introducing Katharine Jarmul Hugo Bowne Anderson: Hey Katharine. Katharine Jarmul: Hi Hugo. Hugo Bowne Anderson: How are you? Katharine Jarmul: Good. How are you? Hugo Bowne Anderson: Pretty good. So I'm going to read your bio as Ryan read mine so everyone knows who you are....
A few weeks ago, Miles McBain toke us for a tour through his project organisation in this blogpost. Not surprisingly given Miles’ frequent shoutouts about the package, it is completely centered around drake. About a year ago on twitter, he convinced me to take this package for a spin. I was immediately sold. It cured a number of pains...
We train you in RStudio Server Pro, RStudio Connect and RStudio Package Manager – remotely RStudio Team is a bundle of professional software for statistical data analysis, package management and data product exchange. As a certified RStudio partner, we will train you in the proper use of RStudio Team – in German. We will help you get started with
Packages give you access to a huge set of functions and datasets, most of which are provided by the generous R community. They are the secret sauce which makes it possible to use R for pretty much anything you can imagine. Additionally, lots of packag...
TL;DR To check your package on Solaris, call rhub::check() as usual and choose one of our Solaris builders. Bookmark this page, in case you get an email from CRAN about your package failing on Solaris. Oracle Solaris Oracle Solaris is a non-free Unix operating system. CRAN regularly tests R packages on Solaris 10. See this talk by Uwe Ligges if you want to know more about the motivation for...
Fans of soccer/football have been left bereft of their prime form of entertainment these past few months and I’ve seen a huge uptick in the amount of casual fans and bloggers turning to learning programming languages such as R o...
The AzureVision package is an R frontend to Azure Computer Vision and Azure Custom Vision. These services let you leverage Microsoft’s Azure cloud to carry out visual recognition tasks using advanced image processing models, with minimal machine learning expertise. The basic idea behind Custom Vision is to take a pre-built image recognition model supplied by Azure, and customise it...
Psychological Networks Amsterdam Summer School – The online edition From June 29 to July 3, we will host an online edition of the Psychological Networks Amsterdam Summer School! During this week, we will make a video lecture series available together with exercises and solutions, and will be available for assistance throughout the week on a
I'm a big fan of R and time series analysis, so I was excited to read the book "Introductory Time Series with R. I've been using the book for about 9 years, so I thought it was about time for a review! In this review, I'm going to cover the following t...
Lately I’ve been publishing screencasts demonstrating how to use the tidymodels framework, from first steps in modeling to how to evaluate complex models. Today’s screencast demonstrates how to implement multiclass or multinomial classification using with this week’s #TidyTuesday dataset on volcanoes. 🌋 Here is the code I used in the video, for those who prefer reading instead of...
Calculating percentages is a fairly common operation, right? However, doing it without leaving the pipeflow always force me to do some bizarre piping such as double grouping and summarise. I am using again the nuclear accidents dataset, and trying to calculate the percentage of accidents that happened in Europe each year. nuclear_accidents % mutate(Year = Date %__% mdy() %__% year(), In_Europe...
Version 0.2.0 of the coronavirus R data package was pushed today to CRAN. The coronavirus package provides a tidy format for Johns Hopkins University Center for Systems Science and Engineering (JHU CCSE) Coronavirus dataset. Version 0.2.0 catch up with the significant changes in the data that took place since the initial release on February 24, changing the package status...
Introduction In R Data One-proportion test Assumption of prop.test() and binom.test() Chi-square goodness of fit test Does my distribution follow a given distribution? Observed frequencies Expected frequencies Observed vs. expected frequencies By hand One-proportion test Verification in R Goodness of fit test Verification in R Introduction In a previous article, I presented the Chi-square test of independence in R which is used to test the independence between two categorical variables. In this article, I show how...
A question came up recently at work about how to use a filter statement entered as a complete string variable inside dplyr’s filter() function – for example dplyr::filter(my_data, "var1 == 'a'"). There does not seem to be much out there on this and I was not sure how to do it either but luckily jakeybob had a neat solution...
This post outlines the steps needed to build R 4+ for Windows with OpenBLAS. The release of R 4.0 includes significant changes to the Windows build system from prior versions—for the better! Before anything, we all owe Jeroen Ooms significant gratitude for the many hours he spent working on the build system. Thank you, Jeroen!! Read the full article... The...
Preamble Catalan Castellers are collaborating (Wikipedia) Availability of distributed code tracking tools and associated collaborative tools make life much easier in building collaborative scientific tools and products. This is now especially much more important in data science as it is applied in many different industries as a de-facto standard. Essentially a computational science field in academics now become industry-wide practice. Peer-review is...
I’m a long-term fan of Weezer. Such was the brilliance of their first two albums that I have stuck with them through thick and thin. And dear me, there has been some very thin music. Nonetheless I own every album – thirteen of them. Among them are six albums entitled “Weezer”. These records are colloquially
We all know the classical Sci-Fi trope of intelligent machines becoming conscious and all the potential ramifications that could follow from there (free will, fighting their human creators, ethical dilemmas and so forth). Now, is this a realistic scenario? As a researcher in the area of AI (see e.g. So, what is AI really?), with … Continue reading "Will...
Running R with taskscheduleR and cronR In a previous post, we talked about how to run R from the Windows Task Scheduler. This article will talk about two additional approaches to schedule R scripts, including using the taskscheduleR package on Windows and the cronR package for Linux. For scheduling Python code, check out this post. The post How to...
In a previous post we discussed the 2020 USMS ePostal results, and hypothesized that declines in average distances swum by older age groups are caused by higher proportions of weaker swimmers participating in older age groups, rather than age based declines. We also mentioned how USMS epostal results are observational data, and so we can’t draw any strict causal...
The Hitchhiker’s Guide to Ggplot2 is for sale at $10.00, the original price was $29.99 and includes the R Markdown notebooks to ease your study. It will be on a discounted price for 24 hours. You can get it from Leanpub.
The CoViD-19 situation in Italy is little by little improving and I feel a bit more optimistic. It’s time for a new post! I will go back to a subject that is rather important for most agronomists, i.e. the selection of crop varieties. All farmers are perfectly aware that crop performances are affected both by the genotype and by the environment....
TLDR: BayestestR currently uses a 89% threshold by default for Credible Intervals (CI). Should we change that? If so, by what? Join the discussion here. Magical numbers, or conventional thresholds, have bad press in statistics, and there are many of...
Continuing with the theme of exploring small issues that come up in trial design, I recently used simulation to assess the impact of stratifying (or not) in the context of a multi-site Covid-19 trial with a binary outcome. The investigators are concern...
Jobs for R users python-bloggers.com (python/data-science news)