Brian Clark Gauch

I received my Bachelor's in Computer Science from Washington University in
St. Louis in 2014 before entering the CS Ph.D. program at Vanderbilt University. My advisor was Dr. Richard Alan Peters. I completed all PhD requirements except for my dissertation and proposal before deciding to graduate with a MS in Computer Science in May, 2019. While at Vanderbilt, I was a teaching assistant and a research assistant with Dr. Gautam Biswas and the Teachable Agents Group.

I am now seeking a job relevant to my expertise; machine learning and computer vision are among my interests, but, broadly speaking, I enjoy challenging algorithmic work. If you think I might be a good fit, you may want to refer to my resume for more information.

Email  /  Google Scholar  /  LinkedIn  /  GitHub


Animation Generation with a Low-Dimensional Simplicial Complex
Brian Gauch and Richard Alan Peters
ICPRAI (International Conference on Pattern Recognition and Artificial Intelligence), 2018

Given motion capture training data, we control an animated character by reducing the dimensionality of the pose space, finding a simplicial complex using Delaunay triangulation, creating a motion graph using the simplicial complex, and then using the motion graph and simplicial complex for distance estimates and interpolation respectively. Using a simple pathfinding algorithm, we compare the above model to a simpler model where k-NN is used to induce a motion graph and interpolate.

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Security Games on a Plane
Jiarui Gan, Bo An, Yevgeniy Vorobeychik, and 免费ssr节点2021
AAAI Conference on Artificial Intelligence, 2017

Most existing models of Stackelberg security games ignore the underlying topology of the space in which targets and defence resources are located. As a result, allocation of resources is restricted to a discrete collection of exogenously defined targets. However, in many practical security settings, defense resources can be located on a continuous plane. Better defense solutions could therefore be potentially achieved by placing resources in a space outside of actual targets (e.g., between targets). To address this limitation, we propose a model called Security Game on a Plane (SGP) in which targets are distributed on a 2-dimensional plane, and security resources, to be allocated on the same plane, protect targets within a certain effective distance. We investigate the algorithmic aspects of SGP. We find that computing a strong Stackelberg equilibrium of an SGP is NP-hard even for zero-sum games, and these are inapproximable in general. On the positive side, we find an exact solution technique for general SGPs based on an existing approach, and develop a PTAS (polynomial-time approximation scheme) for zero-sum SGP to more fundamentally overcome the computational obstacle. Our experiments demonstrate the value of considering SGP and effectiveness of our algorithms.


Behavior Changes across Time and between Populations in Open-Ended Learning Environments
Brian Gauch, Gautam Biswas
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Open-ended computer-based learning environments (OELEs) can be powerful learning tools in that they help students develop effective self-regulated learning (SRL) and problem solving skills. In this study, middle school students used the SimSelf OELE to build causal models to learn about climate science. We study their learning and model building approaches by calculating a suite of behavioral metrics derived using coherence analysis (CA) that are used as features on which to group students by their type of learning behavior. We also analyze changes in these metrics over time, and compare these results to results from other studies with a different OELE to see determine generalizable their findings are across different OELE systems.


Studying Student Use of Self-Regulated Learning Tools in an Open-Ended Learning Environment
John Siler Kinnebrew, Brian Gauch, James Segedy, Gautam Biswas
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This paper discusses a design-based research study that we conducted in a middle school science classroom to test the effectiveness of SimSelf, an open-ended learning environment for science learning. In particular, we evaluated two tools intended to help students develop and practice the important regulatory processes of planning and monitoring. Findings showed that students who used the supporting tools as intended demonstrated effective learning of the science topic. Conversely, students who did not use the tools effectively generally achieved minimal success at their learning tasks. Analysis of these results provides a framework for redesigning the environment and highlights areas for additional scaffolding and guidance.


Estimation of Intrinsic Dimension of Time Series Data
Brian Gauch
Written as part of Vanderbilt's Ph.D. program's prelim exam, 2018

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Security Games on a Plane (original graph theoretic version)
Brian Gauch
CS396: Computational Economics, 2015

Game theoretic approaches, particularly Stackelberg games, have been widely deployed in recent years to allocate security resources. Most existing security game models assume that a security resource assigned to a target can only protect that target. However, in many important real-world security scenarios, when a resource is assigned to a target it exhibits protection externalities; that is, it simultaneously provides protection for nearby targets. We build off of the formulation in Gan et al. that incorporates protection externalities within a Stackelberg game. They made no assumptions about the topology of the space in which the targets and defense resources are located. However, this meant that resources were constrained so that they could only be located on a target. We note that in many cases security problems are fundamentally planar and develop a new model that incorporates this assumption. By constraining the problem to a planar space, we are able to consider a more flexible set of locations for resources, i.e., we remove the restriction that resources must be located at targets. We then evaluate the effectiveness of our model in comparison to Gan's model in terms of overall defender solution quality, and find that it is significantly more effective in many cases.


Team Creation for League of Legends
Brian Gauch
CS6352: Human-Computer Interaction, 2015
Website  /  Study Results

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CS6362 - Machine Learning - Fall 2018

CS3251 - Intermediate Software Design - Spring 2018

CS4260 - Artificial Intelligence - Fall 2017

CS2212 - Discrete Structures - Spring 2017

CS2212 - Discrete Structures - Fall 2016

CS1101 - Programming and Problem Solving - Summer 2016

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