December 2017

Package GetDFPData

December 5, 2017 | R on msperlin

Financial statements of companies traded at B3 (formerly Bovespa), the Brazilian stock exchange, are available in its website. Accessing the data for a single company is straightforward. In the website one can find a simple interface for accessing this dataset. An example is given here. However, gathering and organizing the ... [Read more...]

On the biases in data

December 5, 2017 | David Smith

Whether we're developing statistical models, training machine learning recognizers, or developing AI systems, we start with data. And while the suitability of that data set is, lamentably, sometimes measured by its size, it's always important to reflect on where those data come from. Data are not neutral: the data we ... [Read more...]

visualizing reassortment history using seqcombo

December 4, 2017 | R on Guangchuang Yu

Reassortment is an important strategy for influenza A viruses to introduce a HA subtype that is new to human populations, which creates the possibilities of pandemic. A diagram showed above (Figure 2 of doi:10.1038/srep25549) is widely used to illustrate the reassortment events. While such diagrams are mostly manually draw and ...
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Version 0.6-8 of NIMBLE released

December 4, 2017 | Chris Paciorek

We’ve released the newest version of NIMBLE on CRAN and on our website a week ago. Version 0.6-8 has a few new features, and more are on the way in the next few months. New features include: the proper Gaussian CAR (conditional autoregressive) model can now be used in ...
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#R – Deprecate functions with roxygen2

December 4, 2017 | R-feed

We show how to use roxygen2 tags and templates for deprecating existing documented functions. Introduction Package roxygen2 provides a powerful way of documenting packages and objects inside them. In particular, great flexibility is available for o... [Read more...]

Usage of ruler package

December 4, 2017 | QuestionFlow

Usage examples of ruler package: dplyr-style exploration and validation of data frame like objects. Prologue My previous post tells a story about design of my ruler package, which presents tools for “… creating data validation pipelines and tidy reports”. This package offers a framework for exploring and validating data frame like ... [Read more...]

AI School: Microsoft R and SQL Server ML Services

December 4, 2017 | David Smith

If you'd like to learn how you use R to develop AI applications, the Microsoft AI School now features a learning path focused on Microsoft R and SQL Server ML Services. This learning path includes eight modules, each comprising detailed tutorials and examples: Doing Data Analysis using R Analyzing Big ... [Read more...]

Outliers Detection and Intervention Analysis

December 4, 2017 | Giorgio Garziano

In my previous tutorial Arima Models and Intervention Analysis we took advantage of the strucchange package to identify and date time series level shifts structural changes. Based on that, we were able to define ARIMA models with improved AIC metrics. Furthermore, the attentive analysis of the ACF/PACF plots highlighted ...
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