15 citations · 27 across the 5 of their papers we have counts for
9 papers
Mathematical Language Processing: Automatic Grading and Feedback for Open Response Mathematical Questions
Andrew S. Lan, Divyanshu Vats, Andrew E. Waters +1
While computer and communication technologies have provided effective means to scale up many aspects of education, the submission and grading of assessments such as homework assign…
Active Learning for Undirected Graphical Model Selection
Divyanshu Vats, Robert D. Nowak, Richard G. Baraniuk
This paper studies graphical model selection, i.e., the problem of estimating a graph of statistical relationships among a collection of random variables. Conventional graphical mo…
Path Thresholding: Asymptotically Tuning-Free High-Dimensional Sparse Regression
Divyanshu Vats, Richard G. Baraniuk
In this paper, we address the challenging problem of selecting tuning parameters for high-dimensional sparse regression. We propose a simple and computationally efficient method, c…
Swapping Variables for High-Dimensional Sparse Regression with Correlated Measurements
Divyanshu Vats, Richard G. Baraniuk
We consider the high-dimensional sparse linear regression problem of accurately estimating a sparse vector using a small number of linear measurements that are contaminated by nois…
A Junction Tree Framework for Undirected Graphical Model Selection
Divyanshu Vats, Robert Nowak
An undirected graphical model is a joint probability distribution defined on an undirected graph G*, where the vertices in the graph index a collection of random variables and the…
High-Dimensional Screening Using Multiple Grouping of Variables
Divyanshu Vats
Screening is the problem of finding a superset of the set of non-zero entries in an unknown p-dimensional vector β* given n noisy observations. Naturally, we want this superset to…