If you are a professor teaching or a student enrolled in machine learning program or non-technical program with a machine learning hands-on lab becoming a member of the H2O.ai Academic Program will get you free access to non-commercial use of software license for education and research purposes. Since November 2018 H2O.ai (my employer) made its ground-breaking...
This post is me thinking out loud about applying functions to vectors or lists and getting data frames back. Using R is an ongoing process of finding nice ways to throw data frames, lists and model objects around. While tidyr has arrived at a comfortable way to reshape dataframes with pivot_longer and pivot_wider, I don’t
The RStudio Conference in San Francisco last month was an amazing experience, and I will definitely attend again next year in Orlando. In this post, Pedro Coutinho Silva and I will share some packages and trends from the conference that might interest members of the R community who were unable to attend. I’ll start with Article rstudio::conf 2020 Takeaways:...
by Hong Ooi, Senior Data Scientist at Microsoft and maintainer of the foreach package This post is to announce some new and upcoming changes in the foreach package. First, foreach can now be found on GitHub! The repository is at https://github.com/RevolutionAnalytics/foreach, replacing its old home on R-Forge. Right now the repo hosts both the foreach and iterators packages, but...
We have a series of exciting webinars lined up – if you would like to join any of the below... The post Upcoming webinars appeared first on Mango Solutions.
The newest version of R package fuzzySim (3.0) is now on CRAN! It includes new functions such as ‘favClass‘, ‘bioThreat‘ and ‘gridRecords‘; improvements to some functions, help files and examples; updated e-mail and citation information ; clarifications … Continue reading →
Valentine’s Day is around the corner and love is in the air… but, shock horror, nearly every second marriage ends in a divorce! Unfortunately, I can tell you first hand that this is an experience you’d rather not have. In this post, we see how data science, in the form of the OneR package and … Continue reading "The...
Picking the adventure format Dealing with maps Some time ago I noticed an interesting product on DM’s Guild. Someone has written a series of solo adventures that are played in a similar manner to choose your own adventure games of the good old days. An adventure comes as a pdf file, describing a scene, presenting the player with options and directing the player...
Last week I published my first screencast showing how to use the tidymodels framework for machine learning and modeling in R. Today, I’m using this week’s #TidyTuesday dataset on hotel bookings to show how to use one of the tidymodels packages recipes with some simple models! Here is the code I used in the video, for those...
Introduction Shiny modules provide a great way to organize and container-ize your code for building complex Shiny applications as well as protecting namespace collisions. I highly recommend starting with the excellent documentation from Rstudio. In this post, I am going to cover how to implement modules with insertUI/removeUI so that you DRY, clear server-side overhead, and encapsulate duplicative-ish shiny input names in their own namespace. Normally...
As part of the upcoming 1.3 release of the RStudio IDE we are excited to show you a preview of the real time spellchecking feature that we’ve added. Prior to RStudio 1.3, spellchecking was an active process requiring the user to step word by word in a dialog. By integrating spellchecking directly into the editor we can check words as...
Thoughts initial Data sets Modeling political ideology in the 116th House A final thought References Thoughts initial A brief (and copycat) go at modeling roll call voting behavior in the US House of Representatives using (1) constituency demographics, (2) house member party affiliation, and (3) house member characteristics. This post is based directly on work presented in McCarty, Poole, and Rosenthal (2016), specifically chapter 2...
by Jorge Cimentada Introduction Whenever a new paper is released using some type of scraped data, most of my peers in the social science community get baffled at how researchers can do this. In fact, many social scientists can’t even think of research questions that can be addressed with this type of data...
Problem What do I do when %__% doesn’t work? Context I love the %__% pipe. Originally from magrittr, it’s now characteristic of tidy code. Using %__% has revolutionized how I write code in R (pssst! coming soon: an interactive pipe tutorial!). But sometimes the basic pipe falls short. table() is one of my favorite functions … Continue reading "%$%...
Not having a time series at the desired frequency is a common problem for researchers and analysts. For example, instead of quarterly sales, they only have annual sales. Instead of a daily stock market index, they only have a weekly index. While there is no way to fully make up for the missing data, there
Next week we will hold our yearly course on Advanced R programming at LStat, Leuven. If you are interested in learning one of the following techniques, don't hesitate to subscribe at https://lstat.kuleuven.be/training/coursedescriptions/AdvancedprogramminginR.html Functions, the apply family of functions, parallelisation, advanced data manipulation with R S3 programming Building reports with markdown / Sweave Build an R package Interested in other trainings, vist: http://bnosac.be/index.php/training See you next week!
Zillow is a FREE TOOL with an API that allows Data Scientists to connect to a massive repository of Home Prices and Features. In this lab, we use Shiny, Crosstalk, and Zillow API to create an ML-powered Zillow Home Price Explanation tool. Shiny ...
After a couple of unexpected delays, I am very pleased to announce the publication of the second edition of my book, Analyzing Financial and Economic Data with R. You can find it in Amazon as an ebook or print. An online version is available here. M...
If you use the same code three times, write a function. If you write three such related functions, set up a package. But if you write three embarrassingly similar functions… write code to generate their code for you? In this post, we’ll deal with source code generation. We’ll differentiate scaffolding from generating code, and we’ll present various strategies observed in the wild. This post was...
vtreat version 1.5.2 just became available from CRAN. We have a logged a few improvement in the NEWS. The changes are small and incremental, as the package is already in a great stable state for production use. One of the biggest improvements is documentation clean up, and adapting the examples to use wrapr unpack/to multiple … Continue reading What...
![Le Monde puzzle [#1129]](https://xianblog.files.wordpress.com/2015/10/lemondapari.jpeg?w=450&h=299&%23038;zoom=2)
A number challenge as Le weekly Monde current mathematical puzzle: When the three consecutive numbers 110, 111 and 112, they all are multiples of the sum of their digits. Are there 4 consecutive numbers with three digits like this? A contrario, does there exist 17 consecutive numbers with three digits such that they cannot be
Armadillo is a powerful and expressive C++ template library for linear algebra aiming towards a good balance between speed and ease of use with a syntax deliberately close to a Matlab. RcppArmadillo integrates this library with the R environment and...
Bringing R packages to Fedora (in fact, to any distro) is an Herculean task, especially considering the rate at which CRAN grows nowadays. So I am happy to announce the cran2copr project, which is an attempt to maintain binary RPM repos for most of CRAN (~15k packages as of Feb. 2020) in an automated way using Fedora Copr.… Continuar leyendo cran2copr: RPM...
I should have done this long ago, but it’s never too late: modTools has finally been added to R-bloggers — a content aggregator contributed by bloggers who write about R, empowering bloggers to empower other R users. I hope the … Continue reading →
Description Use MODIS image to calculate TVDI index Make multiple Raster images at the same time Can be used to calculate large image files UI interface calculates TVDI index UI interface exports Golay Savitzky filter images The functions in the TVDI package Golay_Raster Golay_GUI (may be failed if you don’t have GTK+) Mean_Raster Mask_Multi_Raster IQR_Raster … Continue reading New...
So far I have analysed the effect of experience, education, gender, year and region on the salary of engineers in Sweden. In this post, I will have a look at the effect of the sector on the salary of engineers in Sweden. Statistics Sweden use NUTS (Nomenclature des Unités Territoriales Statistiques), which is the EU’s hierarchical regional division, to specify...
Serial Connection Writing to a SQL server Using the MQTT protocol Disclaimer Have you ever wanted to get your own real-world data using sensors? With the advent of the Open-Source Hardware movement, this has become more accessible for the general public, microcontrollers and sensors have become cheaper and easier to program with human-friendly languages like Arduino (C++) and MicroPython (Python), so now anybody...
We have a new improved version of the “how to design a cdata/data_algebra data transform” up! The original article, the Python example, and the R example have all been updated to use the new video. Please check it out!
A new release 0.4.15 of RProtoBuf just arrived at 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 proj...
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