Monthly Archives: July 2018

Joint Statistical Meetings Talk

July 31, 2018
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The Joint Statistical Meetings are being held in the beautiful city of Vancouver, British Columbia this year. I gave a talk on data visualization this year, which is a new one for me, but an area I’m quite excited about. I’ve been looking into the newer toolsets using Javascript graphics for a while now for different projects, and this talk...

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Beyond Basic R – Data Munging

July 31, 2018
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Beyond Basic R – Data Munging

What we couldn’t cover In the data cleaning portion of our Intro to R class, we cover a variety of common data manipulation tasks. Most of these were achieved using the package dplyr, including removing or retaining certain columns (select), filtering out rows by column condition (filter), creating new columns (mutate), renaming columns (rename), grouping data by categorical variables (group_by),...

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MünsteR Meetup on Blog Mining: Deriving the success of blog posts from metadata and text data.

July 31, 2018
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MünsteR Meetup on Blog Mining: Deriving the success of blog posts from metadata and text data.

In our next MünsteR R-user group meetup on Tuesday, August 28th, 2018 Jenny Saatkamp will give a talk titled Blog Mining: Deriving the success of blog posts from metadata and text data. You can RSVP here: http://meetu.ps/e/F7zDN/w54bW/f In our next MünsteR Meetup, Jenny Saatkamp will present her Blog Mining analysis, which is based on 1.500 blog posts from the codecentric...

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A package for dimensionality reduction of large data

A package for dimensionality reduction of large data

Motivation Note: Recently, two new UMAP R packages have appeared. These new packages provide more features than umapr does and they are more actively developed. These packages are: umap, which provides the same Python wrapping function as umapr and also an R implementation, removing the need for the Python version to be installed. It is available on CRAN. uwot, which also provides...

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Source code chapter added to “Evidence-based software engineering using R”

July 31, 2018
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The Source Code chapter of my evidence-based software engineering book has been added to the draft pdf (download here). This chapter has suffered from coming last and there is still lots of work to be done. Almost all the source code related data has been plundered to fill up earlier chapters. Some data did not

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Highlighting with ggplot2: The Old School and New School Way

July 31, 2018
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Highlighting with ggplot2: The Old School and New School Way

A tutorial showing how to highlight a subset of your data within the context of the full data set. We review the old school way (layering) and new school way (gghighlight).

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Business confidence and economic growth by @ellis2013nz

Business confidence and economic growth by @ellis2013nz

The ANZ bank have a nice bit of publicity for themselves each month in New Zealand with the release of the results of their monthly Business Outlook Survey. This week it caused a bit of a stir, with the ANZ’s own commentary reporting New Zealand corporate sector is “in a funk” (ANZ’s words) with a net 45 percentage...

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Analyze party platforms in R the tidy way

July 31, 2018
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Analyze party platforms in R the tidy way

Let’s face it: When it comes to politics this country is exceedingly polarized. What I would like to do is quantify that polarization. To do this, I will use the platform documents that each of the political parties create during presidential election years. I’ll be using the tidy packages (i.e., dplyr, tidyr, tidytext), and the The post Analyze party...

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How to use Hierarchical Bayes for Choice Modeling In R

July 31, 2018
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How to use Hierarchical Bayes for Choice Modeling In R

There are multiple add-on packages available in R to fit choice models in a Bayesian framework.  These include bayesm, choiceModelR, and flipChoice. In this article,...

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How to get live stock prices with Python

July 31, 2018
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How to get live stock prices with Python

In a previous post, I gave an introduction to the yahoo_fin package. The most updated version of the package includes new functionality allowing you to scrape live stock prices from Yahoo Finance (real-time). In this article, we’ll go through a couple ways of getting real-time data from Yahoo Finance for stocks, as well as how The post How to...

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