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News:

  • Homework 0 has been released (pdf, code). It is due Thursday, January 23.
  • If you want to review prerequisite material for this class, I have a list of recommended resources below.

Some problems in computer science admit precise algorithmic solutions. Checking if someone is in a national park is, in some sense, straightforward: get the user’s location, get the boundaries of all national parks, and check if the user location lies within any of those boundaries.

Other problems are less straightforward. Suppose you want your computer to determine if an image contains a bird. To your computer, an image is just a matrix of red, green, and blue pixels. How do you even begin to write the function is_bird(image)?

For problems like this, we turn to a powerful family of methods known as machine learning. The zen of machine learning is the following:

  1. I don’t know how to solve my problem.
  2. But I can obtain a dataset that describes what I want my computer to do.
  3. So, I will write a program that learns the desired behavior from the data.

This class will provide a broad introduction to machine learning. We will start with supervised learning, where our goal is to learn an input-to-output mapping given a set of correct input-output pairs. Next, we will study unsupervised learning, which seeks to identify hidden structure in data. Finally, we will cover reinforcement learning, in which an agent (e.g., a robot) learns from observations it makes as it explores the world.

Course Staff

Robin Jia
Robin Jia
Instructor

Deqing Fu
Deqing Fu
Teaching Assistant

Steven Shi
Steven Shi
Course Producer

Ryan Wang
Ryan Wang
Course Producer

Alice Wei
Alice Wei
Course Producer

Logistics

Prerequisites

This class will also use some basic multivariate calculus (taking partial derivatives and gradients). However, knowledge of single-variable calculus is sufficient as we will introduce the required material during class and section.

All programming assignments will be in Python. Basics of Python will be covered in discussion sections. Students who are not familiar with Python may need to spend some time becoming more familiar with it as needed.

Schedule

All assignments are due by 11:59pm on the indicated date.

Date Topic Related Readings Assignments
Tue Jan 14 Introduction (slides) PML 1 Homework 0 released (pdf, code)
Thu Jan 16 Linear Regression (demo) PML 7.8, 8.2  
Fri Jan 17 Section: Review of Probability & Linear Algebra    
Tue Jan 21 Featurization, Convexity, Maximum Likelihood Estimation PML 2.6.3, 4.2, 8.1  
Thu Jan 23 Logistic Regression, Softmax Regression PML 10.1-10.3 Homework 0 due
Fri Jan 24 Section: Python & numpy tutorial    
Tue Jan 28 Overfitting, Regularization PML 4.5, 4.7, 11.3-11.4  
Thu Jan 30 Bias and Variance, Normal Equations PML 11.2  
Fri Jan 31 Section: Calculus and Gradients    
Tue Feb 4 Generative Classifiers, Naive Bayes PML 9.3-9.4  
Thu Feb 6 Nearest Neighbors, start of Kernels; Project discussion PML 16.1, 16.3  
Fri Feb 7 Section: Cross-Validation, Evaluation Metrics    
Tue Feb 11 Kernel methods continued PML 4.3, 17.1, 17.3 Homework 1 due
Thu Feb 13 Introduction to Neural Networks PML 13.1-13.2  
Fri Feb 14 Section: Review of linear methods    
Tue Feb 18 Backpropagation PML 13.3 Project Proposal due
Thu Feb 20 Neural Network Optimizers, Dropout, Early Stoppin PML 8.4, 13.4-13.5  
Fri Feb 21 Section: Pytorch tutorial    
Tue Feb 25 Convolutional Neural Networks PML 14.1-14.2  
Thu Feb 27 Embedding models, Word Vectors PML 20.5  
Fri Feb 28 Section: Sci-kit Learn tutorial    
Tue Mar 4 Recurrent Neural Networks PML 15.1-15.2  
Thu Mar 6 Sequence-to-sequence, Attention PML 15.4 Homework 2 due
Fri Mar 7 Section: Midterm preparation    
Tue Mar 11 Decision Trees, ensembles PML 18.1-18.5  
Thu Mar 13 In-class Midterm Exam    
Mar 14-21 No class or section (Spring break)    
Tue Mar 25 Transformers I PML 15.5-15.6  
Thu Mar 27 Transformers II, Pretraining PML 15.7  
Fri Mar 28 Section: RNNs and backpropagation in pytorch    
Tue Apr 1 k-Means Clustering PML 21.3 Project Midterm Report due
Thu Apr 3 Gaussian Mixture Models, Expectation Maximization PML 21.4, PML2 8.1-8.2  
Fri Apr 4 Section: Transformers in code    
Tue Apr 8 Expectation Maximization for GMMs; Start Dimensionality Reduction PML 20.1, 20.4  
Thu Apr 10 Finish Principal Components Analysis; start Multi-armed Bandits PML2 34.1-34.4  
Fri Apr 11 Section: Practical guide to pretrained language models    
Tue Apr 15 Markov Decision Processes, Reinforcement Learning PML2 34.5-34.6, 35.1, 35.4 Homework 3 due
Thu Apr 17 Q-Learning PML2 35.2-35.3  
Fri Apr 18 Section: Practical guide to computer vision models    
Tue Apr 22 Finishing RL; Adversarial Examples PML2 19.1-19.8  
Thu Apr 24 Spurious Correlations, Fairness in Machine Learning FAML 1-4  
Fri Apr 25 Section: Review    
Tue Apr 29 How does ChatGPT work? (slides)    
Thu May 1 Conclusion (summary, slides)   Homework 4 due
Fri May 2 Section: Final Exam preparation    
Tue May 13 Final Exam, 2-4pm   Project Final Report due Thursday, May 8

Grading

Grades will be based on homework assignments (40%), a class project (20%), and two exams (40%).

Homework Assignments (40% total):

Final Project (20% total). The final project will proceed in three stages:

Exams (40% total):

Late days

You have 6 late days you may use on any assignment excluding the Project Final Report. Each late day allows you to submit the assignment 24 hours later than the original deadline. You may use a maximum of 3 late days per assignment. If you are working in a group for the project, submitting the project proposal or midterm report one day late means that each member of the group spends a late day. We do not allow use of late days for the final project report because we must grade the projects in time to submit final course grades.

If you have used up all your late days and submit an assignment late, you will lose 10% of your grade on that assignment for each day late. We will not accept any assignments more than 3 days late.

Final project

The final project can be done individually or in groups of up to 3. This is your chance to freely explore machine learning methods and how they can be applied to a task of our choice. You will also learn about best practices for developing machine learning methods—inspecting your data, establishing baselines, and analyzing your errors. More information will be released soon.

Resources

I have written Lecture Notes that accompany all the iPad lectures. I recommend using these notes as reference material for studying. There is no required textbook for this class. If you do want to learn from a textbook, the following may be useful:

To review mathematical background material, you may also find the following useful:

Other Notes

Collaboration policy and academic integrity: Our goal is to maintain an optimal learning environment. You may discuss the homework problems at a high level with other students, but you should not look at another student’s solutions. Trying to find solutions online or from any other sources for any homework or project is prohibited, will result in zero grade and will be reported. Using AI tools to automatically generate solutions to written or programming problems is also prohibited. To prevent any future plagiarism, uploading any material from the course (your solutions, quizzes etc.) on the internet is prohibited, and any violations will also be reported. Please be considerate, and help us help everyone get the best out of this course.

Please remember the expectations set forth in the USC Student Handbook. General principles of academic honesty include the concept of respect for the intellectual property of others, the expectation that individual work will be submitted unless otherwise allowed by an instructor, and the obligations both to protect one’s own academic work from misuse by others as well as to avoid using another’s work as one’s own. All students are expected to understand and abide by these principles. Suspicion of academic dishonesty may lead to a referral to the Office of Academic Integrity for further review.

Students with disabilities: Any student requesting academic accommodations based on a disability is required to register with Disability Services and Programs (DSP) each semester. A letter of verification for approved accommodations can be obtained from DSP. Please be sure the letter is delivered to the instructor as early in the semester as possible.