Foundations of Data Science
Jeff Goldsmith is an associate professor in Biostatistics at the Columbia University Mailman School of Public Health. He joined Columbia after receiving his PhD in Biostatistics from Johns Hopkins in 2012.
Dr. Goldsmith has worked to advance the state-of-the-art in functional data analysis by developing methods for understanding patterns in large, complex datasets in neuroscience, physical activity monitoring, and other areas. Working closely with clinicians and neuroscientists around the world, he and his collaborators have focused on improving the understanding skilled movements. This work involves reaching movements made by stroke patients: in these experiments, a patient’s fingertip position is recorded hundreds of time per second for the duration of the reach. He has developed new methods to understand the impact of stroke on movement quality, and applied these to large, longitudinal datasets. In parallel, Dr. Goldsmith has proposed methods for wearable device research, especially focusing on accelerometers. These devices can produce minute-by-minute (or even finer) resolution observations of activity for hundreds of participants over several days, weeks, or months. The methods developed include approaches for regression with activity trajectories as outcomes; for interpretable dimension reduction; and for aligning major patterns (like wake from sleep, mid-day dips in activity, and sleep onset) across subjects.