Blog Archives

Announcing the caretEnsemble R package

January 20, 2015
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Last week version 1.0 of the caretEnsemble package was released to CRAN. I have co-authored this package with Zach Mayer, who had the original idea of allowing for ensembles of train objects in the caret package. The package is designed to make it easy...

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On Early Warning Systems in Education

December 11, 2014
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Recently the NPR program Marketplace did a story about the rise of the use of dropout early warning systems in public schools that you can read or listen to online. I was lucky enough to be interviewed for the piece because of the role I have play...

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Launching DATA-COPE

August 28, 2014
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Really excited to launch my new website  - DATA-COPE, a place for education data analysts to share ideas, learn about the latest tools and policies affecting their work, and to keep the pulse on education analytics and the role they play in i...

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Of Needles and Haystacks: Building an Accurate Statewide Dropout Early Warning System in Wisconsin

August 25, 2014
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Of Needles and Haystacks: Building an Accurate Statewide Dropout Early Warning System in Wisconsin

For the past two years I have been working on the Wisconsin Dropout Early Warning System, a predictive model of on time high school graduation for students in grades 6-9 in Wisconsin. The goal of this project is to help schools and educators have an ea...

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Mixed Effects Tutorial 2: Fun with merMod Objects

May 17, 2014
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(This article was first published on Data, Evidence, and Policy - Jared Knowles, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on his blog: Data, Evidence, and Policy - Jared Knowles. R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: visualization (ggplot2, Boxplots, maps,...

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eeptools 0.3 Released!

December 9, 2013
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Version 0.3 of my R package of miscellaneous code has been released, this time with substantial contributions from Jason Becker via GitHub. Progress continues toward the ultimate goal for eeptools to "make it easier for administrators at stat...

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My current R projects at the end of 2013

December 4, 2013
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I have been meaning to write a long post explaining each of the major R projects I am currently working on, but I can't seem to find the time to get to them. Instead, I give you a short summary of a few R projects/experiments/ideas I am kicking around....

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Getting Started with Mixed Effect Models in R

November 25, 2013
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Getting Started with Multilevel Modeling in R Getting Started with Multilevel Modeling in R Jared E. Knowles Introduction Analysts dealing with grouped data and complex hierarchical structures in their data ranging from measurements nested within participants, to counties nested within states or students nested within classrooms often find themselves...

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Latent Variable Analysis with R: Getting Setup with lavaan

September 1, 2013
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Latent Variable Analysis with R: Getting Setup with lavaan

Getting Started with Structural Equation Modeling Part 1Getting Started with Structural Equation Modeling: Part 1 Introduction For the analyst familiar with linear regression fitting structural equation models can at first feel strange. In the R environment, fitting structural equation models involves learning new modeling syntax, new plotting...

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Writing a Minimal Working Example (MWE) in R

May 27, 2013
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Writing a Minimal Working Example (MWE) in R

How to Ask for Help using R How to Ask for Help using R The key to getting good help with an R problem is to provide a minimally working reproducible example (MWRE). Making an MWRE is really easy with R, and it will help ensure that...

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