Sketchnotes from TWiML&AI: Evaluating Model Explainability Methods with Sara Hooker

October 11, 2018
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Sketchnotes from TWiML&AI: Evaluating Model Explainability Methods with Sara Hooker

These are my sketchnotes for Sam Charrington’s podcast This Week in Machine Learning and AI about Evaluating Model Explainability Methods with Sara Hooker: Sketchnotes from TWiMLAI talk: Evaluating Model Explainability Methods with Sara Hooker You...

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Writing Code to Read Quotes About Writing Code

October 11, 2018
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Writing Code to Read Quotes About Writing Code

A recent project of mine has been setting up a Twitter bot on innovation quotes. I enjoy this project because in addition to curating a great set of content and growing an audience around it, I have also learned a lot about coding. From web scraping to regular expressions to social media automation, I’ve learned

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Gold-Mining Week 6 (2018)

October 11, 2018
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Week 6 Gold Mining and Fantasy Football Projection Roundup now available. Go get that free agent gold! The post Gold-Mining Week 6 (2018) appeared first on Fantasy Football Analytics.

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How R gets built on Windows

October 11, 2018
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How R gets built on Windows

I wasn't at the Use of R in Official Statistics (uRos2018) conference in the Netherlands last month, but I'm thankful to Jeroen Ooms for sharing the slides from his keynote presentation. In addition to being a postdoc staffer at ROpenSci, Jeroen maintains the official repository for the daily R builds on Windows — you might recognize his name from...

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Our Content Library Growth in the Past 3 Months

October 11, 2018
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Our Content Library Growth in the Past 3 Months

The third quarter of the year just ended, and our data science content library has never grown faster. We now have a content library of +180 courses, +35 projects, and +20 practice modules. In addition, we greatly improved the feedback messages learner...

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Monte Carlo techniques to create counterfactuals

October 11, 2018
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Monte Carlo techniques to create counterfactuals

In the previous STT5100 course, last week, we’ve seen how to use monte carlo simulations. The idea is that we do observe in statistics a sample , and more generally, in econometrics . But let’s get back to statistics (without covariates) to illustrate. We assume that observations are realizations of an underlying random variable . We assume that are...

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How to Calculate Jaccard Coefficients in Displayr Using R

October 11, 2018
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How to Calculate Jaccard Coefficients in Displayr Using R

To measure the overlap or similarity between the data in two binary variables you can use a Jaccard coefficient. The coefficient ranges between 0 and 1,...

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Optimize your R Code using Memoization

October 11, 2018
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This article describes how you can apply a programming technique, called Memoization, to speed up your R code and solve performance bottlenecks. Wikipedia says: ...

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Update to GetLattesData

October 11, 2018
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Update to GetLattesData

- Last year I released package GetLattesData. This package is very handy for anyone that researches bibliometric data of Brazilian scholars. You could easily import the whole academic history of any researcher registered at the p...

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digest 0.6.18

October 10, 2018
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Earlier today, digest version 0.6.18 arrived on CRAN. It will get uploaded to Debian in due course. digest creates hash digests of arbitrary R objects (using the md5, sha-1, sha-256, sha-512, crc32, xxhash32, xxhash64 and murmur32 algorithms) permitt...

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Add value to your visualizations in R

October 10, 2018
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Add value to your visualizations in R

CategoriesVisualizing Data Tags Data Visualisation ggplot2 R Programming Tips & Tricks One of the most demanded skills of the data analyst/scientist in 2018 is visualization. Organizations and companies have a huge demand for data visualization because this branch of methods is very efficient for the recognition of patterns and getting insight into big data. In this article, I show how you can add value to...

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Update to GetLattesData

October 10, 2018
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Update to GetLattesData

Last year I released GetLattesData. This package is very handy for anyone that researches bibliometric data of Brazilian scholars. You could easily import the whole academic history of any researcher registered at the platform. More details about Lattes and GetLattesData in the this post. However, a couple months ago CNPQ introduced a captcha in the webpage. This made it impossible...

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RStudio 1.2 Preview: C/C++ and Rcpp

October 10, 2018
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RStudio 1.2 Preview: C/C++ and Rcpp

We’ve now discussed the improved support in RStudio v1.2 for SQL, D3, and Python. Today, we’ll talk about IDE support for C/C++ and Rcpp. The IDE has had excellent support for C/C++ since RStudio v0.99, including: Tight integration with t...

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Le Monde puzzle [#1070]

October 10, 2018
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Le Monde puzzle [#1070]

Rewording Le Monde mathematical puzzle  fifth competition problem For the 3×3 tables below, what are the minimal number of steps to move from left to rights when the yellow tokens can only be move to an empty location surrounded by two other tokens? In the 4×4 table below, there are 6 green tokens. How many

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Some R Guides: tidyverse and data.table Versions

October 10, 2018
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Some R Guides: tidyverse and data.table Versions

Saghir Bashir of ilustat recently shared a nice getting started with R and tidyverse guide. In addition they were generous enough to link to Dirk Eddelbuette’s later adaption of the guide to use data.table. This type of cooperation and user choice is what keeps the R community vital. Please encourage it. (Heck, please insist on … Continue reading Some...

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New Course: Mixture Models in R

October 10, 2018
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New Course: Mixture Models in R

Here is the course link. Course Description Mixture modeling is a way of representing populations when we are interested in their heterogeneity. Mixture models use familiar probability distributions (e.g. Gaussian, Poisson, Binomial) to provide a c...

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New Course: Developing R Packages

October 10, 2018
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New Course: Developing R Packages

Here is the course link. Course Description In this course, you will learn the end-to-end process for creating an R package from scratch. You will start off by creating the basic structure for your package, and adding in important details like func...

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Monitoring electricity use

October 10, 2018
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Monitoring electricity use

Find out how to use R to summarise electricity use by hour or day.

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How is content created at DataCamp?

October 10, 2018
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How is content created at DataCamp?

A decision was made early in DataCamp's history to outsource our instructors so we can attract the best talent and build as many high-quality courses and projects as quickly as possible. DataCamp instructors -- academics, data scientists in industry, a...

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Data Science With R Course Series – Week 4

Data Science With R Course Series – Week 4

This week in the Data Science With R Course Series we’ll cover Data Preparation, where we structure the data in preparation for modeling. This week’s modules will teach you: How to create a preprocessing pipeline with the recipes package How ...

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GeoJSON Version of CBC Quebec Ridings Hex Cartograms with Example Usage in R

October 10, 2018
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GeoJSON  Version of CBC Quebec Ridings Hex Cartograms with  Example Usage in R

The CBC covered the recent (as of the original post-time on this blog entry) Quebec elections and used a well-crafted hex grid map to display results: They have a great ‘splainer on why they use this type of map. Thinking that it may be useful for others, I used a browser Developer Tools inspector to... Continue reading →

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Open Workshop: Data Visualization in R and ggplot2, November 8th in Frankfurt

October 10, 2018
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Open Workshop: Data Visualization in R and ggplot2, November 8th in Frankfurt

The first time we at STATWORX are opening our doors for anyone who wants to learn more about data. Our “Data Visualization in R and ggplot2” workshop is designed for R-beginners and provides the perfect mixture between theory and practice. The workshop will be held in german at our office in Frankfurt. Participants achieve first insights into the concepts...

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BatchGetSymbols 2.2

October 10, 2018
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BatchGetSymbols 2.2

- One of the main requests I get for package BatchGetSymbols is to allow the choice of frequency of the financial dataset. I finally got some time to work on it. I just posted a new version of BatchGetSymbols in...

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One-Sided Matches in the English Premier League

October 9, 2018
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One-Sided Matches in the English Premier League

While some English Premier League matches are bitterly even in nature, others are historically more one-sided. Using the engsoccerdata package in R, I looked at EPL results data from 1888 to 2017, and sought to find the answer to the question: what have been the most uneven matches in the English first division? Observing matches…

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neuralnet: Train and Test Neural Networks Using R

October 9, 2018
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neuralnet: Train and Test Neural Networks Using R

CategoriesAdvanced Modeling Tags Data Visualisation Neural Networks Prediction R Programming A neural network is a computational system that creates predictions based on existing data. Let us train and test a neural network using the neuralnet library in R. How To Construct A Neural Network? A neural network consists of: Input layers: Layers that take inputs based on existing data Hidden layers: Layers that use backpropagation...

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October, grant proposal season

October 9, 2018
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October, grant proposal season

In 2012, Danielle Herbert, Adrian Barnett, Philip Clarke and Nicholas Graves published an article entitled “on the time spent preparing grant proposals: an observational study of Australian researchers“, whose conclusions had been included in Nature under a more explicit title, “Australia’s grant system wastes time” ! In this study, they included 3700 grant applications sent to the National Health...

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Readable Code with Pipes

October 9, 2018
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Readable Code with Pipes

Introduction R code contain a lot of parentheses in case of a sequence of multiple operations. When you are dealing with complex code, it results in nested function calls which are hard to read and maintain. The magrittr package by Stefan Milton Bache provides pipes enabling us to write R code that is readable. Pipes allow us to clearly express a sequence...

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Political ideology & New Mexico’s 53rd State Legislature

October 9, 2018
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Political ideology & New Mexico’s 53rd State Legislature

Ideal points estimation Legislators in political space Legislation in 2D political space Political space and marijuana A quick geographical perspective Political ideology in NMSL53 Summary References This is the second in a series of posts investigating voting patterns in New Mexico’s 53rd State Legislature (NMSL53). In this post, we detail the use of K. T. Poole and Rosenthal (2011) ’s ideal point estimation procedure (aka NOMINATE) to...

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BatchGetSymbols 2.2

October 9, 2018
By
BatchGetSymbols 2.2

One of the main requests I get for package BatchGetSymbols is to add the choice of frequency of the financial dataset. Today I finally got some time to work on it. I just posted a new version of BatchGetSymbols in CRAN. The major change is that users can now set the time frequency of the financial data: dailly, weekly,...

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