300 citations · 314 across the 9 of their papers we have counts for
9 papers
Function on Scalar Regression with Complex Survey Designs
Lily Koffman, Sunan Gao, Xinkai Zhou +3
Large health surveys increasingly collect high-dimensional functional data from wearable devices, and function on scalar regression (FoSR) is used to quantify the relationship betw…
Walking Fingerprinting Using Wrist Accelerometry During Activities of Daily Living in NHANES
Lily Koffman, John Muschelli, Ciprian Crainiceanu
We propose a method for identifying individuals based on their continuously monitored wrist-worn accelerometry during activities of daily living. The method consists of three steps…
Comparing Step Counting Algorithms for High-Resolution Wrist Accelerometry Data in NHANES 2011-2014
Lily Koffman, Ciprian Crainiceanu, John Muschelli
Purpose: To quantify the relative performance of step counting algorithms in studies that collect free-living high-resolution wrist accelerometry data and to highlight the implicat…
Open Case Studies: Statistics and Data Science Education through Real-World Applications
Carrie Wright, Qier Meng, Michael R. Breshock +5
With unprecedented and growing interest in data science education, there are limited educator materials that provide meaningful opportunities for learners to practice statistical t…
Open-source Tools for Training Resources -- OTTR
Candace Savonen, Carrie Wright, Ava M. Hoffman +4
Data science and informatics tools are developing at a blistering rate, but their users often lack the educational background or resources to efficiently apply the methods to their…
ciftiTools: A package for reading, writing, visualizing and manipulating CIFTI files in R
Damon Pham, John Muschelli, Amanda Mejia
There is significant interest in adopting surface- and grayordinate-based analysis of MR data for a number of reasons, including improved whole-cortex visualization, the ability to…
Ari: The Automated R Instructor
Sean Kross, Jeffrey T. Leek, John Muschelli
We present the ari package for automatically generating technology-focused educational videos. The goal of the package is to create reproducible videos, with the ability to change…
ROC and AUC with a Binary Predictor: a Potentially Misleading Metric
John Muschelli
In analysis of binary outcomes, the receiver operator characteristic (ROC) curve is heavily used to show the performance of a model or algorithm. The ROC curve is informative about…
Relating multi-sequence longitudinal intensity profiles and clinical covariates in new multiple sclerosis lesions
Elizabeth M. Sweeney, Russell T. Shinohara, Blake E. Dewey +5
Structural magnetic resonance imaging (MRI) can be used to detect lesions in the brains of multiple sclerosis (MS) patients. The formation of these lesions is a complex process inv…