Publications by Jared Knowles
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 those helping you can identify the source of the error, and ideally submit to you back the corrected code to fix...
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Latent Variable Analysis with R: Getting Setup with lavaan
Getting Started with Structural Equation Modeling Part 1 Getting 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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Getting Started with Mixed Effect Models in R
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 them...
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My current R projects at the end of 2013
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. Any comments, feedback, suggestions are welcome — consider it a window into my current goal...
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eeptools 0.3 Released!
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 state and local education agencies to analyze and visualize their data on student, school, and district pe...
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Mixed Effects Tutorial 2: Fun with merMod Objects
Related To leave a comment for the author, please follow the link and comment on their blog: Data, Evidence, and Policy - Jared Knowles. R-bloggers.com offers daily e-mail updates about R news and tutorials about learning R and many other topics. Click here if you're looking to post or find an R/data-science job. Want to share your content o...
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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 early indication of the likely graduation of each of their students, early enough to allow time fo...
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Launching DATA-COPE
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 improving education outcomes. The group is a loosely organized affiliation of state and local education...
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On Early Warning Systems in Education
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 played in creating the Wisconsin Dropout Early Warning System. Marketplace did a great job explaining t...
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Announcing the caretEnsemble R package
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 for the user to optimally combine models of various types together to produce a meta-model with...
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