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Dynamic Programming
Abstract
Little has been done in the study of these intriguing questions, and I do not wish to give the impression that any extensive set of ideas exists that could be called a "theory." What is quite surprising, as far as the histories of science and philosophy are concerned, is that the major impetus for the fantastic growth of interest in brain processes, both psychological and physiological, has come from a device, a machine, the digital computer. In dealing with a human being and a human society, we enjoy the luxury of being irrational, illogical, inconsistent, and incomplete, and yet of coping. In operating a computer, we must meet the rigorous requirements for detailed instructions and absolute precision. If we understood the ability of the human mind to make effective decisions when confronted by complexity, uncertainty, and irrationality then we could use computers a million times more effectively than we do. Recognition of this fact has been a motivation for the spurt of research in the field of neurophysiology. The more we study the information processing aspects of the mind, the more perplexed and impressed we become. It will be a very long time before we understand these processes sufficiently to reproduce them. In any case, the mathematician sees hundreds and thousands of formidable new problems in dozens of blossoming areas, puzzles galore, and challenges to his heart's content. He may never resolve some of these, but he will never be bored. What more can he ask?
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“The multivariate evaluation shows another benefit of deep learning models, which is the ability to handle the curse of dimensionality (Bellman, 2010; Keogh and Mueen, 2017) by leveraging different degrees of smoothness in compositional function (Poggio et al., 2017) as well as the parallel computations of the GPUs (Lu et al., 2015).”
From Deep learning for time series classification: a review (2019) · cites this paper as Bellman, 2010
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“if we store intermediate values of u1D439 ( u1D45B ) in memory and retrieve them whenever necessary, u1D439 ( u1D441 ) can be computed in time linear to u1D441 , achieving an exponential speedup.”
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Sutton, R. S., & Barto, A. (2005) · IEEE Transactions on Neural Networks · doi:10.1109/tnn.2004.842673 · Cited by 25,268
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Schmidhuber, J. (2015) · Neural Networks · doi:10.1016/j.neunet.2014.09.003 · Cited by 18,570
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Schultz, W., Dayan, P., & Montague, P. R. (1997) · Science · doi:10.1126/science.275.5306.1593 · Cited by 9,388
Reinforcement Learning: A Survey
Kaelbling, L. P., Littman, M. L., & Moore, A. W. (1996) · Journal of Artificial Intelligence Research · doi:10.1613/jair.301 · Cited by 8,972
Constrained model predictive control: Stability and optimality
Mayne, D. Q., Rawlings, J. B., Rao, C. V., & Scokaert, P. O. M. (2000) · Automatica · doi:10.1016/s0005-1098(99)00214-9 · Cited by 8,736
Markov decision processes: Discrete stochastic dynamic programming
Hazeghi, K., & Puterman, M. L. (1995) · Journal of the American Statistical Association · doi:10.2307/2291177 · Cited by 8,037
Ioannou, P., & Sun, J. (1995) · Proceedings of the ... American Control Conference/Proceedings of the American Control Conference · doi:10.1109/acc.1984.4171550 · Cited by 5,789
Learning to predict by the methods of temporal differences
Sutton, R. S. (1988) · Machine Learning · doi:10.1007/bf00115009 · Cited by 5,148
Addressing Function Approximation Error in Actor-Critic Methods
Fujimoto, S., van Hoof, H., & Meger, D. (2018) · arXiv · doi:10.48550/arxiv.1802.09477 · Cited by 3,650
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Su, X., & Khoshgoftaar, T. M. (2009) · Advances in Artificial Intelligence · doi:10.1155/2009/421425 · Cited by 3,641
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LaValle, S. M., & Kuffner, J. J. (2001) · The International Journal of Robotics Research · doi:10.1177/02783640122067453 · Cited by 3,254
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Kober, J., Bagnell, J. A., & Peters, J. (2013) · The International Journal of Robotics Research · doi:10.1177/0278364913495721 · Cited by 3,160
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Elhamifar, E., & Vidal, R. (2013) · IEEE Transactions on Pattern Analysis and Machine Intelligence · doi:10.1109/tpami.2013.57 · Cited by 3,152
Scientific Machine Learning Through Physics–Informed Neural Networks: Where we are and What’s Next
Cuomo, S., Cola, V. S. D., Giampaolo, F., Rozza, G., Raissi, M., & Piccialli, F. (2022) · Journal of Scientific Computing · doi:10.1007/s10915-022-01939-z · Cited by 3,262
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Gunn, S. R. (1998) · Cited by 2,824
Bellman, R. (1958) · Quarterly of Applied Mathematics · doi:10.1090/qam/102435 · Cited by 2,810
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Fleming, W. H., & Soner, H. M. (2005) · Springer eBooks · doi:10.1007/0-387-31071-1 · Cited by 2,794
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Kiran, B. R., Sobh, I., Talpaert, V., Mannion, P., Sallab, A. A. A., Yogamani, S., & Perez, P. (2022) · IEEE Transactions on Intelligent Transportation Systems · doi:10.1109/tits.2021.3054625 · Cited by 2,342
Larsen, K. G., Pettersson, P., & Yi, W. (1997) · International Journal on Software Tools for Technology Transfer · doi:10.1007/s100090050010 · Cited by 2,224
Computational principles of movement neuroscience
Wolpert, D. M., & Ghahramani, Z. (2000) · Nature Neuroscience · doi:10.1038/81497 · Cited by 2,122
Dynamic Version of the Economic Lot Size Model
Wagner, H. M., & Whitin, T. M. (2004) · Management Science · doi:10.1287/mnsc.1040.0262 · Cited by 2,080
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Grigorescu, S., Trasnea, B., Cocias, T., & Macesanu, G. (2020) · Journal of Field Robotics · doi:10.1002/rob.21918 · Cited by 1,809
Solving high-dimensional partial differential equations using deep learning
Han, J., Jentzen, A., & Weinan, E. (2018) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1718942115 · Cited by 1,880
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Shapiro, A., Dentcheva, D., & Ruszczyński, A. (2009) · Cited by 1,735
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Labadie, J. W. (2004) · Journal of Water Resources Planning and Management · doi:10.1061/(asce)0733-9496(2004)130:2(93 · Cited by 1,582
AntNet: Distributed Stigmergetic Control for Communications Networks
Di Caro, G., & Dorigo, M. (1998) · Journal of Artificial Intelligence Research · doi:10.1613/jair.530 · Cited by 1,579
Rodriguez-Galiano, V., Sanchez-Castillo, M., Chica-Olmo, M., & Chica-Rivas, M. (2015) · Ore Geology Reviews · doi:10.1016/j.oregeorev.2015.01.001 · Cited by 1,576
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Lewis, F. L., & Vrabie, D. (2009) · IEEE Circuits and Systems Magazine · doi:10.1109/mcas.2009.933854 · Cited by 1,591
Dechter, R. (2003) · Cited by 1,554
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Taylor, M. E., & Stone, P. (2009) · doi:10.5555/1577069.1755839 · Cited by 1,524
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Levine, S., Finn, C., Darrell, T., & Abbeel, P. (2015) · arXiv (Cornell University) · doi:10.48550/arxiv.1504.00702 · Cited by 2,641
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Dietterich, T. G. (2000) · Journal of Artificial Intelligence Research · doi:10.1613/jair.639 · Cited by 1,526
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Phelps, E. S., & Pollak, R. A. (1968) · The Review of Economic Studies · doi:10.2307/2296547 · Cited by 1,452
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Carrasquilla, J., & Melko, R. G. (2017) · Nature Physics · doi:10.1038/nphys4035 · Cited by 1,448
(1988) · Cited by 1,379
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Yeh, W. W. (1985) · Water Resources Research · doi:10.1029/wr021i012p01797 · Cited by 1,373
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Abolhasan, M., Wysocki, T. A., & Dutkiewicz, E. (2003) · Ad Hoc Networks · doi:10.1016/s1570-8705(03)00043-x · Cited by 1,352
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Holling, C. S. (1966) · Memoirs of the Entomological Society of Canada · doi:10.4039/entm9848fv · Cited by 1,349
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NICHOLS, J., & WILLIAMS, B. (2006) · Trends in Ecology & Evolution · doi:10.1016/j.tree.2006.08.007 · Cited by 1,104
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Shachter, R. D. (1986) · Operations Research · doi:10.1287/opre.34.6.871 · Cited by 1,258
Shortlist: a connectionist model of continuous speech recognition
Norris, D. G. (1994) · Cognition · doi:10.1016/0010-0277(94)90043-4 · Cited by 1,287
Erdem, T., & Keane, M. P. (1996) · Marketing Science · doi:10.1287/mksc.15.1.1 · Cited by 1,230
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Wolpert, D. M., Doya, K., & Kawato, M. (2003) · Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences · doi:10.1098/rstb.2002.1238 · Cited by 1,228
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Bahl, L. R., Jelinek, F., & Mercer, R. L. (1983) · IEEE Transactions on Pattern Analysis and Machine Intelligence · doi:10.1109/tpami.1983.4767370 · Cited by 1,220
Prokhorov, D. V., & Wunsch, D. C. (1997) · IEEE Transactions on Neural Networks · doi:10.1109/72.623201 · Cited by 1,189
Optimization under uncertainty: state-of-the-art and opportunities
Sahinidis, N. V. (2003) · Computers & Chemical Engineering · doi:10.1016/j.compchemeng.2003.09.017 · Cited by 1,182
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Deering, S., & Cheriton, D. R. (1990) · ACM Transactions on Computer Systems · doi:10.1145/78952.78953 · Cited by 1,173
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Kiselev, V. Y., Andrews, T. S., & Hemberg, M. (2019) · Nature Reviews Genetics · doi:10.1038/s41576-018-0088-9 · Cited by 1,205
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Heimann, T., van Ginneken, B., Styner, M. A., Arzhaeva, Y., Aurich, V., Bauer, C., Beck, A., Becker, C., Beichel, R., Bekes, G., et al. (2009) · IEEE Transactions on Medical Imaging · doi:10.1109/tmi.2009.2013851 · Cited by 1,135
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Arel, I., Rose, D. C., & Karnowski, T. P. (2010) · IEEE Computational Intelligence Magazine · doi:10.1109/mci.2010.938364 · Cited by 1,252
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Weitzman, M. L. (1979) · Econometrica · doi:10.2307/1910412 · Cited by 1,117
Templates and anchors: neuromechanical hypotheses of legged locomotion on land
Full, R. J., & Koditschek, D. E. (1999) · Journal of Experimental Biology · doi:10.1242/jeb.202.23.3325 · Cited by 1,111
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Duan, Y., Chen, X., Houthooft, R., Schulman, J., & Abbeel, P. (2016) · arXiv · doi:10.48550/arxiv.1604.06778 · Cited by 1,114
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Barto, A. G., Bradtke, S. J., & Singh, S. P. (1995) · Artificial Intelligence · doi:10.1016/0004-3702(94)00011-o · Cited by 1,129
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Boutilier, C. E., Dean, T., & Hanks, S. (1999) · Journal of Artificial Intelligence Research · doi:10.1613/jair.575 · Cited by 1,088
Werner, E. E., & Anholt, B. R. (1993) · The American Naturalist · doi:10.1086/285537 · Cited by 1,084
LeFevre, K., DeWitt, D. J., & Ramakrishnan, R. (2005) · ACM SIGMOD International Conference on Management of Data (SIGMOD) · doi:10.1145/1066157.1066164 · Cited by 1,078
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Thrun, S. (1998) · Artificial Intelligence · doi:10.1016/s0004-3702(97)00078-7 · Cited by 1,064
Boutaba, R., Salahuddin, M. A., Limam, N., Ayoubi, S., Shahriar, N., Estrada-Solano, F., & Caicedo, O. M. (2018) · Journal of Internet Services and Applications · doi:10.1186/s13174-018-0087-2 · Cited by 1,036
Markham, N. R., & Zuker, M. (2008) · Methods in molecular biology · doi:10.1007/978-1-60327-429-6_1 · Cited by 1,026
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Murphy, S. A. (2003) · Journal of the Royal Statistical Society Series B (Statistical Methodology) · doi:10.1111/1467-9868.00389 · Cited by 990
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Hotz, V. J., & Miller, R. A. (1993) · The Review of Economic Studies · doi:10.2307/2298122 · Cited by 1,017
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Berclaz, J., Fleuret, F., Turetken, E., & Fua, P. (2011) · IEEE Transactions on Pattern Analysis and Machine Intelligence · doi:10.1109/tpami.2011.21 · Cited by 1,015
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Amini, A. A., Weymouth, T. E., & Jain, R. C. (1990) · IEEE Transactions on Pattern Analysis and Machine Intelligence · doi:10.1109/34.57681 · Cited by 1,008
Dolan, R. J., & Dayan, P. (2013) · Neuron · doi:10.1016/j.neuron.2013.09.007 · Cited by 977
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Yano, C. A., & Lee, H. L. (1995) · Operations Research · doi:10.1287/opre.43.2.311 · Cited by 941
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Och, F. J., & Ney, H. (2004) · Computational Linguistics · doi:10.1162/0891201042544884 · Cited by 927
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Vanderbei, R. J. (1998) · Journal of the Operational Research Society · doi:10.1038/sj.jors.2600987 · Cited by 921
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Wang, F., Zhang, H., & Liu, D. (2009) · IEEE Computational Intelligence Magazine · doi:10.1109/mci.2009.932261 · Cited by 901
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Young, S. J., Gašić, M., Thomson, B., & Williams, J. D. (2013) · Proceedings of the IEEE · doi:10.1109/jproc.2012.2225812 · Cited by 898
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Mori, S., Suen, C. Y., & Yamamoto, K. (1992) · Proceedings of the IEEE · doi:10.1109/5.156468 · Cited by 892
Semiconcave Functions, Hamilton—Jacobi Equations, and Optimal Control
Cannarsa, P., & Sinestrari, C. (2004) · Birkhäuser Boston eBooks · doi:10.1007/b138356 · Cited by 891
Chen, S., & Nahrstedt, K. (1998) · IEEE Network · doi:10.1109/65.752646 · Cited by 875
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Ernst, D., Geurts, P., & Wehenkel, L. A. (2005) · doi:10.5555/1046920.1088690 · Cited by 854
Routing and scheduling of vehicles and crews
Raff, S. J. (1983) · Computers & Operations Research · doi:10.1016/0305-0548(83)90030-8 · Cited by 867
Handbook of Learning and Approximate Dynamic Programming
Si, J., Barto, A. G., Powell, W. B., & Wunsch, D. C. (2004) · Institute of Electrical and Electronics Engineers eBooks · doi:10.1109/9780470544785 · Cited by 863
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Zhu, Z., Lin, K., Jain, A. K., & Zhou, J. (2023) · IEEE Transactions on Pattern Analysis and Machine Intelligence · doi:10.1109/tpami.2023.3292075 · Cited by 861
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Åström, K. J. (1965) · Journal of Mathematical Analysis and Applications · doi:10.1016/0022-247x(65)90154-x · Cited by 854
van Hasselt, H. P. (2010) · Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands · Cited by 847
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Moore, A., & Atkeson, C. G. (1993) · Machine Learning · doi:10.1023/a:1022635613229 · Cited by 837
Pedestrian route-choice and activity scheduling theory and models
Hoogendoorn, S. P., & Bovy, P. H. L. (2003) · Transportation Research Part B Methodological · doi:10.1016/s0191-2615(03)00007-9 · Cited by 831
Experiences with an interactive museum tour-guide robot
Burgard, W., Cremers, A. B., Fox, D., Hähnel, D., Lakemeyer, G., Schulz, D., Steiner, W., & Thrun, S. (1999) · Artificial Intelligence · doi:10.1016/s0004-3702(99)00070-3 · Cited by 841
Distributed MPC Strategies With Application to Power System Automatic Generation Control
Venkat, A. N., Hiskens, I. A., Rawlings, J. B., & Wright, S. J. (2008) · IEEE Transactions on Control Systems Technology · doi:10.1109/tcst.2008.919414 · Cited by 814
Ephraim, Y., & Merhav, N. (2002) · IEEE Transactions on Information Theory · doi:10.1109/tit.2002.1003838 · Cited by 782
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Bellman, R. (1962) · Journal of the ACM · doi:10.1145/321105.321111 · Cited by 808
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Remeseiro, B., & Bolón‐Canedo, V. (2019) · Computers in Biology and Medicine · doi:10.1016/j.compbiomed.2019.103375 · Cited by 851
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Beasley, D. W. C., Bull, D., & Martin, R. R. (1993) · ORCA Online Research @Cardiff (Cardiff University) · Cited by 802
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Mortensen, E. N., & Barrett, W. A. (1995) · ACM SIGGRAPH Conference (SIGGRAPH) · doi:10.1145/218380.218442 · Cited by 789
High-order fully actuated system approaches: Part I. Models and basic procedure
Duan, G. (2020) · International Journal of Systems Science · doi:10.1080/00207721.2020.1829167 · Cited by 796
Hybrid metaheuristics in combinatorial optimization: A survey
Blum, C., Puchinger, J., Raidl, G. R., & Roli, A. (2011) · Applied Soft Computing · doi:10.1016/j.asoc.2011.02.032 · Cited by 787
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Bowling, M., & Veloso, M. (2002) · Artificial Intelligence · doi:10.1016/s0004-3702(02)00121-2 · Cited by 784
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Burgard, W., Moors, M., Fox, D., Simmons, R. G., & Thrun, S. (2002) · Proceedings - IEEE International Conference on Robotics and Automation/Proceedings · doi:10.1109/robot.2000.844100 · Cited by 781
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Metadata
- Authors
- Bellman, R. E.
- Affiliations
- University of Southern California (US)
- Corresponding author
- Bellman, Richard E.
- Venue
- Science
- Publisher
- Princeton University Press
- Published
- 2010-12-31
- Volume
- 153
- Issue
- 3731
- Pages
- 34-37
- ISSN
- 0036-8075 (ISSN-L)
- OpenAlex
- W2341171179
- Cited by
- 14,588
- References
- 0
- Citations by year
- 2026: 227 · 2025: 367 · 2024: 358 · 2023: 345 · 2022: 332 · 2021: 629 · 2020: 582 · 2019: 575 · 2018: 469 · 2017: 429 · 2016: 440 · 2015: 570 · 2014: 616 · 2013: 615 · 2012: 634
- FWCI
- 137.95
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Science (publishedVersion)
- Princeton University Press eBooks (publishedVersion)
- PubMed (publishedVersion)
- Virtual Defense Library (Ministerio de Defensa) (submittedVersion)
- CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
- International Linear Collider (submittedVersion)
- Andalas University Repository (Andalas University) (submittedVersion)
- Topics
- Physical Sciences › Computer Science › Artificial Intelligence › Cognitive Computing and Networks
- Physical Sciences › Computer Science › Computational Theory and Mathematics › Complexity and Algorithms in Graphs
- Physical Sciences › Computer Science › Artificial Intelligence › Neural Networks and Applications
- Keywords
- dynamic programming, optimization, decision-making, human cognition, information processing, brain processes, neurophysiology
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