**Archis Ghate**

Professor
and Associate Chair

Industrial
and Systems Engineering

University
of Washington, Seattle

Office:
MEB G8

Email:
archis@uw.edu

**Short bio**

I joined the University of Washington as an Assistant Professor in
September 2006. I received a PhD in Industrial and Operations Engineering from the
University of Michigan in 2006, and an MS in Management Science and Engineering from
Stanford in 2003. Before that, I completed my undergraduate education at the
Indian Institute of Technology, Bombay, in 2001.

My field of study is Operations Research. More
specifically, my work focuses on theory, models, and algorithms for
optimization under uncertainty. I like to study problems that call for
analytical techniques from real and functional analysis; convex optimization;
statistics; control; and applied probability.

I am a recipient of the NSF CAREER award and of
the award for Excellence in Teaching Operations Research from the Institute of
Industrial Engineers. My doctoral students have won the Dantzig dissertation
prize and the Bonder scholarship from INFORMS,
and other competitive awards/fellowships from the University of Washington.
Upon graduation, my doctoral students become faculty or work in finance,
consulting, service operations, or tech companies.

**Journal Papers**

1. A. Ghate, C.
Ryan, and R. L. Smith, A Simplex method for countably infinite linear programs,
forthcoming in the *SIAM Journal on
Optimization*, 2021

2. A. Ghate, Inverse conic
linear programs in Banach spaces, *Optimization Letters*, 15, 289-310, 2021

3. A. Ghate, Imputing
radiobiological parameters of the linear-quadratic dose-response model from a
radiotherapy fractionation plan, 65(22), 225009, *Physics in Medicine & Biology*, 2020

4. A. Ghate, Inverse
optimization in semi-infinite linear programs, *Operations Research Letters*, 48(3), 278-285, 2020

5. A. Ghate, Robust
continuous linear programs, *Optimization
Letters*, 14, 1627-1642, 2020

6. A. Ajdari, F. Saberian, and A.
Ghate, A
theoretical framework for learning tumor dose-response uncertainty in
individualized spatiobiologically integrated
radiotherapy, *INFORMS Journal
on Computing*, 32(4), 930-951, 2020

7. S. Nourollahi and A. Ghate, Inverse
optimization in minimum cost flow problems on countably infinite networks, *Networks*, 73(3), 292-305, 2019

8. S. Nourollahi, A. Ghate, and M Kim, Optimal modality selection in
external beam radiotherapy, *Mathematical
Medicine and Biology*, 36(3), 361-380, 2019

- A.
Ajdari, A. Ghate, and M. Kim, Adaptive
treatment-length optimization in spatiobiologically
integrated radiotherapy,
*Physics in Medicine and Biology*, 63(7), 2018

- J.
Kotas and A. Ghate, Bayesian
learning of dose-response parameters from a cohort under response-guided
dosing,
*European Journal of Operational Research*, 265(1), 328-343, 2018

- A. Ghate, Duality in
countably infinite monotropic programs,
*SIAM Journal on Optimization*, 27(3), 2010-2033, 2017

- M. Salemi
Parizi, Y. Gocgun, and
A. Ghate, Approximate
policy iteration for dynamic resource-constrained project scheduling,
*Operations Research Letters*, 45(5), 442-447, 2017

- S. Nourollahi
and A. Ghate, Duality
in convex minimum cost flow problems on infinite networks and hypernetworks,
*Networks*, 70(2), 98-115, 2017

- F.
Saberian, A. Ghate, and M. Kim, Spatiotemporally
optimal fractionation in radiotherapy,
*INFORMS Journal on Computing*, 29(3), 422-437, 2017

- F.
Saberian, A. Ghate, and M. Kim, A theoretical
stochastic control framework for adapting radiotherapy to hypoxia,
*Physics in Medicine and Biology*, 61(19), 7136, 2016

- A. Ajdari
and A. Ghate, Robust
spatiotemporally integrated fractionation in radiotherapy,
*Operations Research Letters*, 44(4), 544-549, 2016

- S.
Sinha and A. Ghate, Policy
iteration for robust nonstationary Markov decision processes,
*Optimization Letters*, 10(8), 1613-1628, 2016

- J.
Kotas and A. Ghate, Response-guided
dosing for rheumatoid arthritis,
*IIE Transactions on Healthcare Systems Engineering*, 6(1), 1-21, 2016

- S.
Sinha, J. Kotas, and A. Ghate, Robust
response-guided dosing,
*Operations Research Letters*, 44(3), 394-399, 2016

- A.
Ghate, Robust
optimization in countably infinite linear programs,
*Optimization Letters*, 10(4), 847-863, 2016

- F.
Saberian, A. Ghate, and M. Kim, Optimal
fractionation in radiotherapy with multiple normal tissues,
*Mathematical Medicine and Biology,*33(2), 211-252, 2016

- A. Ghate, Circumventing the
Slater conundrum in countably infinite linear programs,
*European Journal of Operational Research*, 246(3), 708-720, 2015

- F.
Saberian, A. Ghate, and M. Kim, A two-variable
linear program solves the standard linear-quadratic formulation of the
fractionation problem in cancer radiotherapy,
*Operational Research Letters,*43(3), 254-258, 2015; corrigendum (thanks to Professor Mike Todd of Cornell University)

- A.
Ghate, Optimal
minimum bids and inventory scrapping in sequential, single-unit, Vickrey auctions with demand learning,
*European Journal of Operational Research,*245(2), 555-570, 2015

- A.
Ghate, Inverse
optimization in countably infinite linear programs,
*Operations Research Letters*, 43, 231-235, 2015; supplementary material

- M. Salemi
Parizi and A. Ghate, Multi-class,
multi-resource advance scheduling with no-shows, cancellations, and
overbooking,
*Computers and Operations Research*, 67, 90-101, 2016

- T D Lortz,
I S Dolinskaya, A Ghate, and R L Smith, Solvability
in infinite horizon optimization,
*Operations Research Letters*, 43, 498-503, 2015

- A.
Ghate, Shih-Fen Cheng, S. Baumert, D. Reaume, D. Sharma, and R. L. Smith, Sampled
fictitious play for multi-action stochastic dynamic programs,
*IIE Transactions*, 46 (7), 742-756, 2014

- A.
Ghate, and R. L. Smith, A linear programming
approach to nonstationary infinite horizon Markov decision processes,
*Operations Research*, 61 (2), 413-425, 2013

- Y.
Gocgun, and A. Ghate, Lagrangian relaxation and constraint generation for
allocation and advanced scheduling,
*Computers and Operations Research*, 39 (10), 2323-2336, 2012

- M.
Kim, A. Ghate and M. Phillips, A stochastic
control formalism for dynamic biologically conformal radiation therapy,
*European Journal of Operational Research*, 219 (3), 541-556, 2012

- X.
Chen, A. Ghate, and A. Tripathi, Dynamic
lot-sizing in sequential online retail auctions,
*European Journal of Operational Research*, 215 (1), 257-267, 2011

- Y.
Gocgun, B. Bresnahan, A. Ghate, and M. Gunn, A Markov
decision process approach to multi-category patient scheduling in a
diagnostic facility,
*Artificial Intelligence in Medicine*, 53 (2), 73-81, 2011

- M. Epelman, A. Ghate, and R. L.
Smith, Sampled
fictitious play for approximate dynamic programming,
*Computers and Operations Research*38**,****,**1705-1718**,**2011

- A. Ghate, D. Sharma, and R. L. Smith, A shadow
simplex method for infinite linear programs,
*Operations Research,*58 (4), 865-877, 2010

- W. Wang, A. Ghate, and Z. B. Zabinsky,
Adaptive
parameterized improving hit-and-run for global optimization,
*Optimization Methods and Software,*24(4-5), 569-594,

- M.
Kim, A. Ghate, and M. Phillips, A Markov
decision process approach to temporal modulation of dose fractions in
radiation therapy planning,
*Physics in Medicine and Biology*, 54(14), 4455-4476, 2009

- A.
Ghate, and R. L. Smith, Optimal
backlogging over an infinite horizon under time-varying convex production
and inventory costs,
*Manufacturing and Service Operations Management,*11, 362-268, 2009

- S.
Baumert, A. Ghate, S. Kiatsupaibul, Y. Shen, R.
L. Smith, and Z. B. Zabinsky, Discrete
hit-and-run for sampling points from arbitrary distributions over subsets
of integer hyper-rectangles,
*Operations Research*, 57 (3), 727-739, 2009

- A.
Ghate, and R. L. Smith, Characterizing
extreme points as basic feasible solutions in infinite linear programs,
*Operations Research Letters*, 37(1), 7-10, 2009

- A. Ghate, and R. L. Smith, A hit-and-run approach
for generating scale invariant Small World networks,
*Networks,*53 (1), 67-78, 2009

- A.
Ghate, Decentralized
search on spheres using small-world Markov chains: expected hitting times
and structural properties,
*Advances in Applied Probability,*4 (4), 966-978, 2008

- A.
Ghate, and R. L. Smith, A dynamic
programming approach to efficient sampling from Boltzmann distributions,
*Operations Research Letters*, 36 (6), 665-668, 2008

- A.
Ghate, and R. L. Smith, Adaptive search
with stochastic acceptance probabilities for global optimization,
*Operations Research Letters*, 36(3), 285-290, 2008

**Peer Reviewed Conference Proceedings**

1.
M.
Salemi Parizi and A. Ghate,
Weakly coupled Markov decision processes with imperfect information, *Proceedings of* *the Winter Simulation Conference*, National Harbor, MD, 2019

2.
S.
Nourollahi, A. Ghate, and M. Kim, Robust modality
selection in radiotherapy, *Proceedings of
the INFORMS International Conference on Service Science*, 2018, Phoenix, AZ,
2018

3.
P.
Kumar and A. Ghate, Information Directed Policy Sampling for Partially
Observable Markov Decision Processes with parametric uncertainty, *Proceedings of the INFORMS International
Conference on Service Science*, 2018, Phoenix, AZ, 2018

4.
M.
Salemi Parizi and A. Ghate,
Lot-sizing in sequential auctions while learning demand and bid distributions, *Proceedings of* *the Winter Simulation Conference*, Washington, D. C., 2016

5.
A.
Ajdari and A. Ghate, A model predictive control
approach for discovering nonstationary fluence-maps in cancer radiotherapy
fractionation, *Proceedings of* *the Winter Simulation Conference*,
Washington, D. C., 2016

6. Z. B. Zabinsky,
W. Wang, Y. Prasetio, A. Ghate, and J. W. Yen,
Adaptive probabilistic branch and bound for level set approximation, *Proceedings of the Winter Simulation
Conference*, Phoenix, AZ, 2011

7. Y. Gocgun
and A. Ghate, A Lagrangian approach to dynamic
resource allocation, *Proceedings of the
Winter Simulation Conference*, Baltimore, MD, 2010