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Philip S. Thomas
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- affiliation: University of Massachusetts Amherst, Department of Computer Science
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Journal Articles
- 2016
- [j1]Kathleen M. Jagodnik
, Philip S. Thomas, Antonie J. van den Bogert
, Michael S. Branicky, Robert F. Kirsch
:
Human-Like Rewards to Train a Reinforcement Learning Controller for Planar Arm Movement. IEEE Trans. Hum. Mach. Syst. 46(5): 723-733 (2016)
Conference and Workshop Papers
- 2024
- [c55]Dhawal Gupta, Scott M. Jordan, Shreyas Chaudhari, Bo Liu, Philip S. Thomas, Bruno Castro da Silva:
From Past to Future: Rethinking Eligibility Traces. AAAI 2024: 12253-12260 - [c54]Min-Hsuan Yeh
, Blossom Metevier
, Austin Hoag
, Philip S. Thomas
:
Analyzing the Relationship Between Difference and Ratio-Based Fairness Metrics. FAccT 2024: 518-528 - 2023
- [c53]Vincent Liu, Yash Chandak, Philip S. Thomas, Martha White:
Asymptotically Unbiased Off-Policy Policy Evaluation when Reusing Old Data in Nonstationary Environments. AISTATS 2023: 5474-5492 - [c52]Austin Hoag, James E. Kostas, Bruno Castro da Silva, Philip S. Thomas, Yuriy Brun
:
Seldonian Toolkit: Building Software with Safe and Fair Machine Learning. ICSE Companion 2023: 107-111 - [c51]Dhawal Gupta, Yash Chandak, Scott M. Jordan, Philip S. Thomas, Bruno C. da Silva:
Behavior Alignment via Reward Function Optimization. NeurIPS 2023 - 2022
- [c50]Stephen Giguere, Blossom Metevier, Bruno Castro da Silva, Yuriy Brun, Philip S. Thomas, Scott Niekum:
Fairness Guarantees under Demographic Shift. ICLR 2022 - [c49]Jared Yeager, J. Eliot B. Moss
, Michael Norrish
, Philip S. Thomas:
Mechanizing Soundness of Off-Policy Evaluation. ITP 2022: 32:1-32:20 - [c48]Yash Chandak, Shiv Shankar, Nathaniel D. Bastian, Bruno C. da Silva, Emma Brunskill, Philip S. Thomas:
Off-Policy Evaluation for Action-Dependent Non-stationary Environments. NeurIPS 2022 - 2021
- [c47]Yash Chandak, Shiv Shankar, Philip S. Thomas:
High-Confidence Off-Policy (or Counterfactual) Variance Estimation. AAAI 2021: 6939-6947 - [c46]James E. Kostas, Yash Chandak, Scott M. Jordan, Georgios Theocharous, Philip S. Thomas:
High Confidence Generalization for Reinforcement Learning. ICML 2021: 5764-5773 - [c45]Chris Nota, Philip S. Thomas, Bruno C. da Silva:
Posterior Value Functions: Hindsight Baselines for Policy Gradient Methods. ICML 2021: 8238-8247 - [c44]My Phan, Philip S. Thomas, Erik G. Learned-Miller:
Towards Practical Mean Bounds for Small Samples. ICML 2021: 8567-8576 - [c43]Harsh Satija, Philip S. Thomas, Joelle Pineau, Romain Laroche:
Multi-Objective SPIBB: Seldonian Offline Policy Improvement with Safety Constraints in Finite MDPs. NeurIPS 2021: 2004-2017 - [c42]Christina J. Yuan, Yash Chandak, Stephen Giguere, Philip S. Thomas, Scott Niekum:
SOPE: Spectrum of Off-Policy Estimators. NeurIPS 2021: 18958-18969 - [c41]Yash Chandak, Scott Niekum, Bruno C. da Silva, Erik G. Learned-Miller, Emma Brunskill, Philip S. Thomas:
Universal Off-Policy Evaluation. NeurIPS 2021: 27475-27490 - [c40]Dhawal Gupta, Gabor Mihucz, Matthew Schlegel, James E. Kostas, Philip S. Thomas, Martha White:
Structural Credit Assignment in Neural Networks using Reinforcement Learning. NeurIPS 2021: 30257-30270 - [c39]Ali Montazeralghaem, James Allan, Philip S. Thomas:
Large-scale Interactive Conversational Recommendation System using Actor-Critic Framework. RecSys 2021: 220-229 - 2020
- [c38]Yash Chandak, Georgios Theocharous, Chris Nota, Philip S. Thomas:
Lifelong Learning with a Changing Action Set. AAAI 2020: 3373-3380 - [c37]Yash Chandak, Georgios Theocharous, Blossom Metevier, Philip S. Thomas:
Reinforcement Learning When All Actions Are Not Always Available. AAAI 2020: 3381-3388 - [c36]Chris Nota, Philip S. Thomas:
Is the Policy Gradient a Gradient? AAMAS 2020: 939-947 - [c35]Yash Chandak, Georgios Theocharous, Shiv Shankar, Martha White, Sridhar Mahadevan, Philip S. Thomas:
Optimizing for the Future in Non-Stationary MDPs. ICML 2020: 1414-1425 - [c34]Scott M. Jordan, Yash Chandak, Daniel Cohen, Mengxue Zhang, Philip S. Thomas:
Evaluating the Performance of Reinforcement Learning Algorithms. ICML 2020: 4962-4973 - [c33]James E. Kostas, Chris Nota, Philip S. Thomas:
Asynchronous Coagent Networks. ICML 2020: 5426-5435 - [c32]Yash Chandak, Scott M. Jordan, Georgios Theocharous, Martha White, Philip S. Thomas:
Towards Safe Policy Improvement for Non-Stationary MDPs. NeurIPS 2020 - [c31]Pinar Ozisik, Philip S. Thomas:
Security Analysis of Safe and Seldonian Reinforcement Learning Algorithms. NeurIPS 2020 - 2019
- [c30]Saket Tiwari, Philip S. Thomas:
Natural Option Critic. AAAI 2019: 5175-5182 - [c29]Francisco M. Garcia, Bruno C. da Silva, Philip S. Thomas:
A Compression-Inspired Framework for Macro Discovery. AAMAS 2019: 1973-1975 - [c28]Francisco M. Garcia, Philip S. Thomas:
A Meta-MDP Approach to Exploration for Lifelong Reinforcement Learning. AAMAS 2019: 1976-1978 - [c27]Yash Chandak, Georgios Theocharous, James E. Kostas, Scott M. Jordan, Philip S. Thomas:
Learning Action Representations for Reinforcement Learning. ICML 2019: 941-950 - [c26]Philip S. Thomas, Erik G. Learned-Miller:
Concentration Inequalities for Conditional Value at Risk. ICML 2019: 6225-6233 - [c25]Francisco M. Garcia, Philip S. Thomas:
A Meta-MDP Approach to Exploration for Lifelong Reinforcement Learning. NeurIPS 2019: 5692-5701 - [c24]Blossom Metevier, Stephen Giguere, Sarah Brockman, Ari Kobren, Yuriy Brun, Emma Brunskill, Philip S. Thomas:
Offline Contextual Bandits with High Probability Fairness Guarantees. NeurIPS 2019: 14893-14904 - 2018
- [c23]Philip S. Thomas, Christoph Dann, Emma Brunskill:
Decoupling Gradient-Like Learning Rules from Representations. ICML 2018: 4924-4932 - [c22]Shayan Doroudi
, Philip S. Thomas, Emma Brunskill:
Importance Sampling for Fair Policy Selection. IJCAI 2018: 5239-5243 - 2017
- [c21]Philip S. Thomas, Emma Brunskill:
Importance Sampling with Unequal Support. AAAI 2017: 2646-2652 - [c20]Philip S. Thomas, Georgios Theocharous, Mohammad Ghavamzadeh, Ishan Durugkar, Emma Brunskill:
Predictive Off-Policy Policy Evaluation for Nonstationary Decision Problems, with Applications to Digital Marketing. AAAI 2017: 4740-4745 - [c19]Josiah P. Hanna, Philip S. Thomas, Peter Stone, Scott Niekum:
Data-Efficient Policy Evaluation Through Behavior Policy Search. ICML 2017: 1394-1403 - [c18]Zhaohan Guo, Philip S. Thomas, Emma Brunskill:
Using Options and Covariance Testing for Long Horizon Off-Policy Policy Evaluation. NIPS 2017: 2492-2501 - [c17]Shayan Doroudi, Philip S. Thomas, Emma Brunskill:
Importance Sampling for Fair Policy Selection. UAI 2017 - 2016
- [c16]Marc G. Bellemare, Georg Ostrovski, Arthur Guez, Philip S. Thomas, Rémi Munos:
Increasing the Action Gap: New Operators for Reinforcement Learning. AAAI 2016: 1476-1483 - [c15]Philip S. Thomas, Emma Brunskill:
Data-Efficient Off-Policy Policy Evaluation for Reinforcement Learning. ICML 2016: 2139-2148 - [c14]Philip S. Thomas, Bruno Castro da Silva, Christoph Dann, Emma Brunskill:
Energetic Natural Gradient Descent. ICML 2016: 2887-2895 - 2015
- [c13]Philip S. Thomas, Georgios Theocharous, Mohammad Ghavamzadeh:
High-Confidence Off-Policy Evaluation. AAAI 2015: 3000-3006 - [c12]Philip S. Thomas, Georgios Theocharous, Mohammad Ghavamzadeh:
High Confidence Policy Improvement. ICML 2015: 2380-2388 - [c11]Georgios Theocharous, Philip S. Thomas, Mohammad Ghavamzadeh:
Personalized Ad Recommendation Systems for Life-Time Value Optimization with Guarantees. IJCAI 2015: 1806-1812 - [c10]Philip S. Thomas, Scott Niekum, Georgios Theocharous, George Dimitri Konidaris:
Policy Evaluation Using the Ω-Return. NIPS 2015: 334-342 - [c9]Georgios Theocharous, Philip S. Thomas, Mohammad Ghavamzadeh:
Ad Recommendation Systems for Life-Time Value Optimization. WWW (Companion Volume) 2015: 1305-1310 - 2014
- [c8]William Dabney, Philip S. Thomas:
Natural Temporal Difference Learning. AAAI 2014: 1767-1773 - 2013
- [c7]Philip S. Thomas, William Dabney, Stephen Giguere, Sridhar Mahadevan:
Projected Natural Actor-Critic. NIPS 2013: 2337-2345 - 2012
- [c6]Philip S. Thomas, Andrew G. Barto:
Motor primitive discovery. ICDL-EPIROB 2012: 1-8 - 2011
- [c5]George Dimitri Konidaris, Sarah Osentoski, Philip S. Thomas:
Value Function Approximation in Reinforcement Learning Using the Fourier Basis. AAAI 2011: 380-385 - [c4]Philip S. Thomas, Andrew G. Barto:
Conjugate Markov Decision Processes. ICML 2011: 137-144 - [c3]Philip S. Thomas:
Policy Gradient Coagent Networks. NIPS 2011: 1944-1952 - [c2]George Dimitri Konidaris, Scott Niekum, Philip S. Thomas:
TD_gamma: Re-evaluating Complex Backups in Temporal Difference Learning. NIPS 2011: 2402-2410 - 2009
- [c1]Philip S. Thomas, Antonie J. van den Bogert, Kathleen M. Jagodnik, Michael S. Branicky:
Application of the Actor-Critic Architecture to Functional Electrical Stimulation Control of a Human Arm. IAAI 2009
Informal and Other Publications
- 2024
- [i42]Kartik Choudhary, Dhawal Gupta, Philip S. Thomas:
ICU-Sepsis: A Benchmark MDP Built from Real Medical Data. CoRR abs/2406.05646 (2024) - [i41]Scott M. Jordan, Adam White, Bruno Castro da Silva, Martha White, Philip S. Thomas:
Position: Benchmarking is Limited in Reinforcement Learning Research. CoRR abs/2406.16241 (2024) - 2023
- [i40]Yash Chandak, Shiv Shankar, Nathaniel D. Bastian, Bruno Castro da Silva, Emma Brunskill, Philip S. Thomas:
Off-Policy Evaluation for Action-Dependent Non-Stationary Environments. CoRR abs/2301.10330 (2023) - [i39]Yash Chandak, Shiv Shankar, Venkata Gandikota
, Philip S. Thomas, Arya Mazumdar:
Optimization using Parallel Gradient Evaluations on Multiple Parameters. CoRR abs/2302.03161 (2023) - [i38]Vincent Liu, Yash Chandak, Philip S. Thomas, Martha White:
Asymptotically Unbiased Off-Policy Policy Evaluation when Reusing Old Data in Nonstationary Environments. CoRR abs/2302.11725 (2023) - [i37]James E. Kostas, Scott M. Jordan, Yash Chandak, Georgios Theocharous, Dhawal Gupta, Martha White, Bruno Castro da Silva, Philip S. Thomas:
Coagent Networks: Generalized and Scaled. CoRR abs/2305.09838 (2023) - [i36]Yuhong Luo, Austin Hoag, Philip S. Thomas:
Learning Fair Representations with High-Confidence Guarantees. CoRR abs/2310.15358 (2023) - [i35]Dhawal Gupta, Yash Chandak, Scott M. Jordan, Philip S. Thomas, Bruno Castro da Silva:
Behavior Alignment via Reward Function Optimization. CoRR abs/2310.19007 (2023) - [i34]Dhawal Gupta, Scott M. Jordan, Shreyas Chaudhari, Bo Liu, Philip S. Thomas, Bruno Castro da Silva:
From Past to Future: Rethinking Eligibility Traces. CoRR abs/2312.12972 (2023) - 2022
- [i33]Abhinav Bhatia, Philip S. Thomas, Shlomo Zilberstein:
Adaptive Rollout Length for Model-Based RL Using Model-Free Deep RL. CoRR abs/2206.02380 (2022) - [i32]Aline Weber, Blossom Metevier, Yuriy Brun, Philip S. Thomas, Bruno Castro da Silva:
Enforcing Delayed-Impact Fairness Guarantees. CoRR abs/2208.11744 (2022) - 2021
- [i31]Yash Chandak, Shiv Shankar, Philip S. Thomas:
High-Confidence Off-Policy (or Counterfactual) Variance Estimation. CoRR abs/2101.09847 (2021) - [i30]Yash Chandak, Scott Niekum, Bruno Castro da Silva, Erik G. Learned-Miller, Emma Brunskill, Philip S. Thomas:
Universal Off-Policy Evaluation. CoRR abs/2104.12820 (2021) - [i29]Harsh Satija, Philip S. Thomas, Joelle Pineau, Romain Laroche:
Multi-Objective SPIBB: Seldonian Offline Policy Improvement with Safety Constraints in Finite MDPs. CoRR abs/2106.00099 (2021) - [i28]Christina J. Yuan, Yash Chandak, Stephen Giguere, Philip S. Thomas, Scott Niekum:
SOPE: Spectrum of Off-Policy Estimators. CoRR abs/2111.03936 (2021) - [i27]James E. Kostas, Philip S. Thomas, Georgios Theocharous:
Edge-Compatible Reinforcement Learning for Recommendations. CoRR abs/2112.05812 (2021) - 2020
- [i26]Francisco M. Garcia, Chris Nota, Philip S. Thomas:
Learning Reusable Options for Multi-Task Reinforcement Learning. CoRR abs/2001.01577 (2020) - [i25]Yash Chandak, Georgios Theocharous, Shiv Shankar, Martha White, Sridhar Mahadevan, Philip S. Thomas:
Optimizing for the Future in Non-Stationary MDPs. CoRR abs/2005.08158 (2020) - [i24]Scott M. Jordan, Yash Chandak, Daniel Cohen, Mengxue Zhang, Philip S. Thomas:
Evaluating the Performance of Reinforcement Learning Algorithms. CoRR abs/2006.16958 (2020) - [i23]Georgios Theocharous, Yash Chandak, Philip S. Thomas, Frits de Nijs:
Reinforcement Learning for Strategic Recommendations. CoRR abs/2009.07346 (2020) - [i22]Yash Chandak, Scott M. Jordan, Georgios Theocharous, Martha White, Philip S. Thomas:
Towards Safe Policy Improvement for Non-Stationary MDPs. CoRR abs/2010.12645 (2020) - 2019
- [i21]Tengyang Xie, Philip S. Thomas, Gerome Miklau:
Privacy Preserving Off-Policy Evaluation. CoRR abs/1902.00174 (2019) - [i20]Yash Chandak, Georgios Theocharous, James E. Kostas, Scott M. Jordan, Philip S. Thomas:
Learning Action Representations for Reinforcement Learning. CoRR abs/1902.00183 (2019) - [i19]Francisco M. Garcia, Philip S. Thomas:
A Meta-MDP Approach to Exploration for Lifelong Reinforcement Learning. CoRR abs/1902.00843 (2019) - [i18]James E. Kostas, Chris Nota, Philip S. Thomas:
Asynchronous Coagent Networks: Stochastic Networks for Reinforcement Learning without Backpropagation or a Clock. CoRR abs/1902.05650 (2019) - [i17]Erik G. Learned-Miller, Philip S. Thomas:
A New Confidence Interval for the Mean of a Bounded Random Variable. CoRR abs/1905.06208 (2019) - [i16]Yash Chandak, Georgios Theocharous, Chris Nota, Philip S. Thomas:
Lifelong Learning with a Changing Action Set. CoRR abs/1906.01770 (2019) - [i15]Yash Chandak, Georgios Theocharous, Blossom Metevier, Philip S. Thomas:
Reinforcement Learning When All Actions are Not Always Available. CoRR abs/1906.01772 (2019) - [i14]Philip S. Thomas, Scott M. Jordan, Yash Chandak, Chris Nota, James E. Kostas:
Classical Policy Gradient: Preserving Bellman's Principle of Optimality. CoRR abs/1906.03063 (2019) - [i13]Chris Nota, Philip S. Thomas:
Is the Policy Gradient a Gradient? CoRR abs/1906.07073 (2019) - [i12]Sneha Aenugu, Abhishek Sharma, Sasikiran Yelamarthi, Hananel Hazan, Philip S. Thomas, Robert Kozma:
Reinforcement learning with spiking coagents. CoRR abs/1910.06489 (2019) - 2018
- [i11]Saket Tiwari, Philip S. Thomas:
Natural Option Critic. CoRR abs/1812.01488 (2018) - 2017
- [i10]Zhaohan Daniel Guo, Philip S. Thomas, Emma Brunskill:
Using Options for Long-Horizon Off-Policy Evaluation. CoRR abs/1703.03453 (2017) - [i9]Philip S. Thomas, Christoph Dann, Emma Brunskill:
Decoupling Learning Rules from Representations. CoRR abs/1706.03100 (2017) - [i8]Josiah P. Hanna, Philip S. Thomas, Peter Stone, Scott Niekum:
Data-Efficient Policy Evaluation Through Behavior Policy Search. CoRR abs/1706.03469 (2017) - [i7]Philip S. Thomas, Emma Brunskill:
Policy Gradient Methods for Reinforcement Learning with Function Approximation and Action-Dependent Baselines. CoRR abs/1706.06643 (2017) - [i6]Philip S. Thomas, Bruno Castro da Silva, Andrew G. Barto, Emma Brunskill:
On Ensuring that Intelligent Machines Are Well-Behaved. CoRR abs/1708.05448 (2017) - 2016
- [i5]Philip S. Thomas, Emma Brunskill:
Data-Efficient Off-Policy Policy Evaluation for Reinforcement Learning. CoRR abs/1604.00923 (2016) - [i4]Philip S. Thomas, Emma Brunskill:
Importance Sampling with Unequal Support. CoRR abs/1611.03451 (2016) - 2015
- [i3]Marc G. Bellemare, Georg Ostrovski, Arthur Guez, Philip S. Thomas, Rémi Munos:
Increasing the Action Gap: New Operators for Reinforcement Learning. CoRR abs/1512.04860 (2015) - [i2]Philip S. Thomas:
A Notation for Markov Decision Processes. CoRR abs/1512.09075 (2015) - 2014
- [i1]Sridhar Mahadevan, Bo Liu, Philip S. Thomas, William Dabney, Stephen Giguere, Nicholas Jacek, Ian Gemp, Ji Liu:
Proximal Reinforcement Learning: A New Theory of Sequential Decision Making in Primal-Dual Spaces. CoRR abs/1405.6757 (2014)
Coauthor Index
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