# About me

von Karman Instructor, Caltech

Welcome! I am von Karman instructor in Computing + Mathematical Sciences at Caltech, and, starting 1/2021, Assistant Professor of Mechanical Engineering at University of Washington. Prior to this, I completed an NSF Mathematical Sciences Postdoctoral Research Fellowship, sponsored by Prof. Andrew Stuart. I received my Ph.D. in Applied Mathematics from University of Washington.

I am interested in data-driven prediction and control of complex, large-scale dynamical systems, which naturally occur in fluid dynamics, atmospheric science, biology, even engineering processes. My research focuses on interpretable machine learning and optimizing data observations for efficient modeling and control. I study these methods from an algorithmic and theoretical perspective, by exploiting tools from dimensionality reduction, operator theory and manifold learning. I apply these techniques to study complex phenomena in climate, fluid dynamics, biology and manufacturing.

## Publications

### Kernel Analog Forecasting: Multiscale Test Problems

D Burov, D Giannakis, K Manohar, A Stuart - arXiv:2005.06623, 2020

### Data-Driven Aerospace Engineering: Reframing the Industry with Machine Learning

SL Brunton, JN Kutz, K Manohar, AY Aravkin, K Morgansen, J Klemisch, N Goebel, J Buttrick, J Poskin, A Blom-Schieber, T Hogan, D McDonald - arXiv:2008.10740, 2020

### Optimal sensor and actuator placement using balanced model reduction

K Manohar, JN Kutz, SL Brunton - arXiv:1812.01574, 2018

### Randomized CP tensor decomposition

NB Erichson, K Manohar, SL Brunton, JN Kutz

Machine Learning: Science and Technology 1 (2), 025012, 2020

### Sparse principal component analysis using variable projection

NB Erichson, P Zheng, K Manohar, SL Brunton, JN Kutz, AY Aravkin

SIAM Journal on Applied Mathematics 80 (2), 977-1002, 2020

### Optimized sampling for multiscale dynamics

K Manohar, E Kaiser, SL Brunton, JN Kutz

Multiscale Modeling & Simulation 17 (1), 117-136, 2020

### Data-driven sparse sensor placement for reconstruction

K Manohar, BW Brunton, JN Kutz, SL Brunton

IEEE Control Systems Magazine 38 (3), 63-86, 2018

### Predicting shim gaps in aircraft assembly with machine learning and sparse sensing

K Manohar, T Hogan, J Buttrick, AG Banerjee, JN Kutz, SL Brunton

Journal of Manufacturing Systems, 48: 87-95, 2018

### Sparse-TDA: Sparse realization of topological data analysis for multi-way classification

W Guo, K Manohar, SL Brunton, AG Banerjee

IEEE Transactions on Knowledge and Data Engineering 30 (7), 1403-1408, 2018

### Environment identification in flight using sparse approximation of wing strain

K Manohar, SL Brunton, JN Kutz

Journal of Fluids and Structures 70, 162-180, 2017

## Overview of Courses

Computing + Mathematical Sciences, Caltech

Fall Term 2020

### CMS 270: Data-driven modeling of dynamical systems

9 units (3-0-6); first term. Prerequisites: Basic differential equations, linear algebra, probability and statistics: ACM 104, ACM/EE 106 ab, ACM/EE/IDS 116 or equivalent. The explosion of data in the sciences and engineering poses new challenges for learning interpretable models using efficient algorithms. When governing equations are unavailable, the tools of dimensionality reduction and machine learning can be leveraged for data-driven pattern extraction, inference and prediction. This course covers the theory and algorithms behind data-driven modeling of dynamical systems, using concepts from operator theory, statistical computing and network science. Applications will be drawn from the physical, engineering and biological sciences. Topics include but are not limited to: Modal decompositions, Koopman operator approximation, Laplacian embeddings (diffusion maps, etc), physics-constrained neural networks, and autoencoders.

## Contact Information

California Institute of Technology

1200 E. California Blvd.

MC 305-16

Pasadena, CA 91125

kmanohar [at] caltech.edu