Blog Archives

A New Release of rIP (v1.2.0) for Detecting Fraud in Online Surveys

May 29, 2019
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A New Release of rIP (v1.2.0) for Detecting Fraud in Online Surveys

We are excited to announce the latest major release of rIP (v1.2.0), which is an R package that detects fraud in online surveys by tracing, scoring, and visualizing IP addresses. Essentially, rIP takes an array of IP addresses, which are always captured in online surveys (e.g., MTurk), and the keys for the services the user … Continue reading A...

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Advice to Young (and Old) Programmers: A Conversation with Hadley Wickham

August 22, 2018
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I recently had the wonderful opportunity to chat with Hadley Wickham. He is an immensely prolific, yet humble guy who has not only contributed heavily to the advancement and development of R as a language and environment, but who also cares and has thought a lot about the process of doing data science the right … Continue reading Advice...

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A New Package (hhi) for Quick Calculation of Herfindahl-Hirschman Index scores

April 9, 2018
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A New Package (hhi) for Quick Calculation of Herfindahl-Hirschman Index scores

The Herfindahl-Hirschman Index (HHI) is a widely used measure of concentration in a variety of fields including, business, economics, political science, finance, and many others. Though simple to calculate (summed squared market shares of firms/actors in a single market/space), calculation of the HHI can get onerous, especially as the number of firms/actors increases and the … Continue reading A...

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Introducing purging: An R package for addressing mediation effects

March 28, 2018
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Introducing purging: An R package for addressing mediation effects

A Simple Method for Purging Mediation Effects among Independent Variables Mediation can occur when one independent variable swamps the effect of another, suggesting high correlation between the two variables. Though there are some great packages for mediation analysis out there, the simple intuition of its need is often ambiguous, especially for younger graduate students. Thus, … Continue reading Introducing...

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