CS 747: Foundations of Intelligent and Learning Agents
(Autumn 2018)
(Picture source: https://www.softwire.com/blog/wpcontent/uploads/2014/07/2048Example.jpg)
Instructor
Shivaram Kalyanakrishnan
Office: Room 220, New CSE Building
Phone: 7704
Email: shivaram@cse.iitb.ac.in
Teaching Assistants
Sabyasachi Ghosh
Email: 174050001@iitb.ac.in
Akshay Arora
Email: 173050021@iitb.ac.in
Rahul Sharma
Email: 173050019@iitb.ac.in
Parth Patel
Email: 173050032@iitb.ac.in
Dhaval Limdiwala
Email: 173050061@iitb.ac.in
Class
Lectures will be held in LH 302, Lecture Hall Complex during Slot 6:
11.05 a.m. – 12.30 p.m. Wednesdays and Fridays.
Office hours will immediately follow class and be up to 1.15
p.m. on Wednesdays and Fridays. Meetings can also be arranged by
appointment.
Course Description
Today's computing systems are becoming increasingly adaptive and
autonomous: they are akin to intelligent, decisionmaking
"agents". With its roots in artificial intelligence and machine
learning, this course covers the foundational principles of designing
such agents. Topics covered include: (1) agency, intelligence, and
learning; (2) exploration and multiarmed bandits; (3) Markov Decision
Problems and planning; (4) reinforcement learning; (5) multiagent
systems and multiagent learning; and (6) case studies.
The course will adopt a "handson" approach, with programming
assignments designed to highlight the relationship between theory and
practice. Case studies, as well as invited talks from experts, will
offer an "endtoend" view of deployed agents. It is hoped that
students can apply the learnings from this course to the benefit of
their respective pursuits in various areas of computer science and
related fields.
Prerequisites
The course is open to all Ph.D. students, all masters students, and
undergraduate/dualdegree students in their fourth (or higher) year of
study.
The course does not formally have other courses as
prerequisites. However, class lectures and assignments will assume
that the student is comfortable with probability and
algorithms. Introduction
to Probability by Grinstead and Snell is an excellent resource on
basic probability. Any student who is not comfortable with the
contents of chapters 1 through 7 (and is unable to solve the
exercises) is advised against taking CS 747.
The course has an intensive programming component: based on ideas
discussed in class, the student must be able to independently design,
implement, and evaluate programs in a language of his/her choice. The
student must be prepared to spend a significant amount of time on the
programming component of the course.
Evaluation
Grades will be based on four programming assignments, each
worth 10 marks; a course project worth 20 marks; a midsemester
examination worth 15 marks; and an endsemester examination worth 25
marks.
The programming assignments and project must be turned in through
Moodle. Late submissions will not be evaluated; they will receive no
marks.
Students auditing the course must score 50 or more marks in the
course to be awarded an "AU" grade.
Academic Honesty
Students are expected to adhere to the highest standards of
integrity and academic honesty. Acts such as copying in the
examinations and sharing code for the programming
assignments will be dealt with strictly, in accordance with the
institute's procedures
and disciplinary
actions for academic malpractice.
Texts and References
Reinforcement Learning: An Introduction, Richard S. Sutton and
Andrew G. Barto, 2^{nd} edition
2018. Online
version.
Algorithms for Reinforcement Learning, Csaba Szepesvári,
Morgan & Claypool,
2009. Online
version.
Selected research papers.

A
Stochastic Approximation Method
Herbert Robbins and Sutton Monro, 1951

Asymptotically
Efficient Adaptive Allocation Rules
T. L. Lai and Herbert Robbins, 1985

Qlearning
Christopher J. C. H. Watkins and Peter Dayan, 1992

Foraging in an Uncertain Environment Using Predictive Hebbian Learning
P. Read Montague, Peter Dayan, and Terrence J. Sejnowski, 1994

Average Reward Reinforcement Learning: Foundations, Algorithms, and Empirical Results
Sridhar Mahadevan, 1996

Dopamine neurons report and error in the temporal prediction of reward during learning
Jeffrey R. Hollerman and Wolfram Schultz, 1998

Learning to Drive a Bicycle using Reinforcement Learning and Shaping
Jette Randløv and Preben Alstrøm, 1998

Policy invariance under reward transformations: Theory and application to reward shaping
Andrew Y. Ng, Daishi Harada, and Stuart Russell, 1999

Algorithms for Inverse Reinforcement Learning
Andrew Y. Ng and Stuart Russell, 2000

Convergence
Results for SingleStep OnPolicy ReinforcementLearning Algorithms
Satinder Singh, Tommi Jaakkola, Michael L. Littman, and Csaba Szepesvári, 2000

Finitetime
Analysis of the Multiarmed Bandit Problem
Peter Auer, Nicolò CesaBianchi, and Paul Fischer, 2002

Treebased Batch Mode Reinforcement Learning
Damien Ernst, Pierre Geurts, and Louis Wehenkel, 2005

Bandit based MonteCarlo Planning
Levente Kocsis and Csaba Szepesvári, 2006

Learning Tetris Using the Noisy CrossEntropy Method
István Szita and András Lőrincz, 2006

Half
Field Offense in RoboCup Soccer: A Multiagent Reinforcement Learning
Case Study
Shivaram Kalyanakrishnan, Yaxin Liu, and Peter Stone, 2007

Batch Reinforcement Learning
in a Complex Domain
Shivaram Kalyanakrishnan and Peter Stone, 2007

An Empirical Evaluation of Thompson Sampling
Olivier Chapelle and Lihong Li, 2011

The KLUCB Algorithm for Bounded Stochastic Bandits and Beyond
Aurélien Garivier and Olivier Cappé, 2011

Learning Methods for Sequential Decision Making with Imperfect Representations
Shivaram Kalyanakrishnan, 2011

Humanlevel control through deep reinforcement learning
Volodymyr Mnih, Koray Kavukcuoglu, David Silver, Andrei A. Rusu, Joel
Veness, Marc G. Bellemare, Alex Graves, Martin Riedmiller, Andreas
K. Fidjeland, Georg Ostrovski, Stig Petersen, Charles Beattie, Amir
Sadik, Ioannis Antonoglou, Helen King, Dharshan Kumaran, Daan
Wierstra, Shane Legg, and Demis Hassabis, 2015

Mastering the game of Go with deep neural networks and tree search
David Silver, Aja Huang, Chris J. Maddison, Arthur Guez, Laurent Sifre, George van den Driessche, Julian Schrittwieser, Ioannis Antonoglou, Veda Panneershelvam, Marc Lanctot, Sander Dieleman, Dominik Grewe, John Nham, Nal Kalchbrenner, Ilya Sutskever, Timothy Lillicrap, Madeleine Leach, Koray Kavukcuoglu, Thore Graepel, and Demis Hassabis, 2016

Mastering the game of Go without human knowledge
David Silver, Julian Schrittwieser, Karen Simonyan, Ioannis Antonoglou, Aja Huang, Arthur Guez, Thomas Hubert, Lucas Baker, Matthew Lai, Adrian Bolton, Yutian Chen, Timothy Lillicrap, Fan Hui, Laurent Sifre, George van den Driessche, Thore Graepel, and Demis Hassabis, 2017.

Communication
This page will serve as the primary source of information regarding
the course, the schedule, and related announcements. The Moodle page
for the course will be used for sharing resources for the assignments,
and also for recording grades.
Email is the best means of communicating with the instructor;
students must send email with "[CS747]" in the header, with a copy
marked to the TAs.
Schedule

July 18: Welcome; Introduction to the course; Cointossing game.

July 20: Multiarmed Bandits.
Reading: Sections 2, 2.1, 2.2, 2.3, Sutton and Barto (2018).
Summary: Definition of stochastic multiarmed bandit; Definition of
algorithm, εfirst and εgreedy algorithms; Graph of
E[r^{t}] versus t.

July 25: Multiarmed Bandits.
Reading: Section 1, Figure 1, Theorem 1, Auer et al. (2002).
Summary: Definition of regret; Achieving sublinear regret with
ε_{t}greedy sampling; Lai and Robbins's lower bound
on regret; UCB algorithm.
Reference: Theorem 1, Lai and Robbins (1985).

July 27: Multiarmed Bandits.
Reading: Wikipedia page
on Hoeffding's
Inequality; Sections 1–3, Garivier and Cappé (2011);
Chapelle and Li (2011).
Summary: Hoeffding's Inequality; KLUCB; Thompson Sampling.

August 1: Multiarmed Bandits.
Reading: Slides.
Summary: Proof of upper bound on the regret of UCB.

August 3: Markov Decision Problems.
Reading: Chapter 3, Sutton and Barto (2018).
Summary: Definition of Markov Decision Problem, policy, and value
function; representing MDPs through state transition diagrams;
existence of optimal policy.
Reference: MDP example used in class.

August 8: Markov Decision Problems.
Summary: Reward models (infinite discounted, total, finite horizon,
average); Episodic and continuing tasks; Discounting; Existence of
optimal policy; Derivation of Bellman's Equations.
Reference: Section 2.2, Mahadevan (1996).

August 10: Markov Decision Problems.
Reading: Appendix A, Szepesvári (2009).
Summary: Bellman's Optimality Equations; Bellman Operator and
Bellman Optimality Operator; Banach's Fixed Point Theorem; Proof of
contraction under max norm.

August 17: Markov Decision Problems.
Reading: Slides.
Summary: Value Iteration; Linear Programming for MDP Planning; Policy Improvement Theorem and Policy Iteration.

August 24: Reinforcement Learning.
Reading: Class Note 1.
Summary: The Reinforcement Learning problem; Assumption on reachability of states; Modelbased learning algorithm for acting optimally in the limit.

August 29: Reinforcement Learning.
Reading: Sections 5, 5.1, 5.2, 5.3, Sutton and Barto (2018); Class Note 2.
Summary: Monte Carlo prediction; First Visit and Every Visit Monte Carlo methods; Monte Carlo ES algorithm for control.

August 31: Reinforcement Learning.
Reading: Sections 6, 6.1, 6.2, 6.3, Sutton and Barto (2018).
Summary: Monte Carlo prediction; First Visit and Every Visit Monte
Carlo methods; Monte Carlo ES algorithm for control.
Reference: Robbins and Monro (1951).

September 5: Reinforcement Learning.
Reading: Sections 7, 7.1, Sutton and Barto
(2018); TD(λ)
algorithm (Sutton and Barto, 1998).
Summary: nstep returns and λreturn; TD(λ) algorithm;
TD learning in animals.
References: Wikipedia
page on Classical Conditioning; Montague, Dayan, and Sejnowski
(1994); Hollerman and Schultz (1998).

September 7: Reinforcement Learning.
Reading: Sections 6.4, 6.5, 6.6, Sutton and Barto (2018).
Summary: Modelfree control: Sarsa, Qlearning, Expected Sarsa; Need
for generalisation in practice; soccer as illustrative example.
References: Watkins and Dayan (1992); Singh et al. (2000); Section
2.1, Kalyanakrishnan et al. (2007).

September 12: Midsemester examination.

September 19: Reinforcement Learning.
Reading: Sections 9, 9.1, 9.2, 9.3, 9.4, 11.4, Sutton and Barto
(2018).
Summary: Linear TD(λ); Geometric view of linear function
approximation.

September 26: Reinforcement Learning.
Reading: Sections 9.5, 10, 10.1, 10.2, 11, 11.1, 11.2, 11.3, Sutton and
Barto (2018).
Summary: Tsitsiklis and Van Roy's counterexample; divergence of
offpolicy bootstrapping with linear function approximation; Problems
with function approximation for control; Tile coding.

September 28: Reinforcement Learning.
Reading: Chapter 4, Kalyanakrishnan (2011).
Summary: Tile coding (continued); Illustration of the effect of
representation on Value Functionbased methods and Policy Search
methods in the game of Tetris.
References: Szita and Lőrincz (2006).

October 3: Reinforcement Learning.
Reading: Sections 3.1, 3.2.2, 3.3.5, Kalyanakrishnan (2011).
Summary: Policy Search methods: Hill Climbing, Crossentropy method,
CMAES; strengths and weaknesses of Policy Search methods.

October 5: Reinforcement Learning.
Reading: Sections 13, 13.1, 13.2, Sutton and Barto (2018).
Summary: Policy gradient methods, Policy gradient theorem.

October 10: Reinforcement Learning.
Reading: Sections 13.3, 13.4, 13.5, Sutton and Barto (2018).
Summary: REINFORCE; REINFORCE with a baseline; Actorcritic methods.

October 12: Invited talk by Harshad Khadilkar: RL
applications in the real world: Some use cases in industrial
operations.

October 17: Reinforcement Learning.
Reading: Sections 8, 8.1, 8.2, 8.3, 8.4, Sutton and Barto (2018).
Summary: Modelbased Reinforcement Learning; DynaQ; Batch Reinforcement Learning; Experience Replay.

October 24: Reinforcement Learning.
Reading: Sections 8.5, 8.6, 8.7, Sutton and Barto (2018); Kalyanakrishnan and Stone (2007).
Summary: Fitted Q Iteration; Trajectory Sampling; Full and sample backups.
Reference: Ernst, Geurts, and Wehenkel (2005).

October 26: Reinforcement Learning.
Reading: Sections 8.8, 8.9, 8.10, 8.11, Sutton and Barto (2018)
Summary: Realtime Dynamic Programming, Rollout Algorithms; Monte Carlo Tree Search (UCT).
Reference: Kocsis and Szepesvári, 2006

October 31: Reinforcement Learning.
Reading: Silver et al. (2016).
Summary: DQN algorithm on ATARI games; AlphaGo; AlphaGo Zero; AlphaZero.
Reference: Mnih et al. (2015); Silver et al. (2017); Wikipedia entry on AlphaZero.

November 2: Reward shaping; Inverse Reinforcement Learning.
Reading: Randløv and Alstrøm (1998); Ng et al. (1999); Ng and Russell (2000).
Summary: Purpose of shaping rewards; bicycle control as example; necessary and sufficient conditions for shaping rewards; Inverse reinforcement learning problem; nonuniqueness of reward function, LP formulation.

November 9: Invited talk by Ankur A. Kulkarni: Introduction to Game Theory.

November 14: Endsemester examination.
Assignments

Programming Assignment 1 (10 marks).
Announced August 8, 2018; due 11.55 p.m., August 19, 2018.

Programming Assignment 2 (10 marks).
Announced August 30, 2018; due 11.55 p.m.,September 9, 2018.

Programming Assignment 3 (10 marks).
Announced September 26, 2018; due 11.55 p.m., October 7, 2018.

Project Proposal (5 marks).
Announced September 28, 2018; due 11.55 p.m., October 18, 2018.

Project (15 marks).
Announced October 24, 2018; due 11.55 p.m., November 23, 2018.

Programming Assignment 4 (10 marks).
Announced October 30, 2018; due 11.55 p.m., November 11, 2018.