CS 559: Deep Learning

Fall 2025

Instructor: Hamdi Dibeklioglu

Office hours: by appointment / online

Class hours:

Tuesday 10:30-12:20, Thursday 15:30-17:20
While every other week we will have 2+2 hours of lectures, other weeks there will be one 2-hours lecture. Please see the schedule below for the dates of the lectures.

Class room:

EB-101

UPDATE:

Lectures start as of 16 September 2024.

Catalog Description: Overview of machine learning and its applications. Loss functions, numerical optimization and back-propagation. Fundamentals of feedforward neural networks. Modern architectures and techniques for training deep networks. Convolutional neural networks: basics, visualization, and techniques for efficient spatial localization in images. Recurrent neural networks and their variants. Applications of recurrent neural networks in language and image understanding, and image captioning. Recent advances in generative models learning, generative adversarial networks and variational auto encoders. Unsupervised and self-supervised representation learning. Deep reinforcement learning.

Recommended Books:

I. Goodfellow, Y. Bengio, A. Courville. Deep Learning, MIT Press, 2016. [Available Online]
K. P. Murphy. Machine Learning: A Probabilistic Perspective, MIT Press, 2012.
C. M. Bishop. Pattern Recognition and Machine Learning, Springer, 2006.

Assessment Methods:

Homework	20%
Literature Survey and Presentation	5% + %10
Midterm:Essay/written	30%
Project	35%

Any of the following will directly result in an F grade:

not submitting a project or homework (including report),
not preparing/presenting a survey on the pre-scheduled date,
being absent in the midterm,
being absent in a project presentation.

Passing Grade: No predetermined grade to pass the course.

Makeup Policy: Medical report holders will be entitled for the midterm make up. Makeup exam will be comprehensive.

Homework:
Please follow this link to access the homework details. Homework details/materials are accessible only within Bilkent network. Use VPN to access from home.

Literature Survey and Presentation:

Groups of four students will choose a topic related to deep learning, and prepare a short survey on it.
Surveys should be based on about 12 papers (report: 5 pages max.).
You will make a presentation on your survey in class. The presentation should be in parallel with your report.
Survey topics should be confirmed first. Very similar topics to others’ will not be allowed (priority: first come, first served).
Your chosen survey topic and a few lines explanation (indicating group members) should be sent to dibeklioglu@cs.bilkent.edu.tr by 29 September 2025, 23.59 (Turkey time).

Project:

By groups of four or five students.
Explore novel applications of contemporary deep learning techniques or develop novel deep learning techniques.
Projects related to your research topics are encouraged.
Three stages:

Proposal: one-page description of the project topic and the planning for the project (indicating group members) should be sent to dibeklioglu@cs.bilkent.edu.tr by 1 October 2025 (23:59 Turkey time)
Progress presentation (no report)
Final report & presentation (report: 5 pages max.)

You are allowed and encouraged to use mainstream deep learning libraries like TensorFlow, PyTorch, Torch, etc.

Template for the Reports:
All reports (including homework report) must be prepared using the IEEE double-column transactions article template (i.e. "bare_jrnl.tex").

Important Dates:

Event	Date / Deadline
Midterm Exam	04 December 2025
Literature Survey Proposal submission [subject line: cs559_2025f_survey]	29 September 2025, 23:59
Literature Survey Report submission (including the presentation) [via Moodle]	09 December 2025, 23:59
Literature Survey Presentation	09 December 2025
Homework submission (including the report) [via Moodle]	09 November 2025, 23:59
Project Proposal submission [subject line: cs559_2025f_project]	1 October 2025, 23:59
Project Progress Presentation	25 November 2025
Project Final Presentation	18/23 December 2025
Project Final Presentation Submission [via Moodle]	18 December 2025, 12:30
Project submission (including the report and presentation) [via Moodle]	25 December 2025, 23:59

Tentative Schedule & Lecture Notes:
Lecture notes below are downloadable only within Bilkent network. Use VPN to access from home.

Week	Topic	Dates	Lecture Notes
1	Introduction, Basics	16 September 2025 (10:30-12:20) 18 September 2025 (15:30-17:20)
2	Loss Functions	23 September 2025 (10:30-12:20)
3	Optimization Feedforward networks and training (1)	30 September 2025 (10:30-12:20) 02 October 2025 (15:30-17:20)
4	Feedforward networks and training (2)	07 October 2025 (10:30-12:20)
5	Convolutional neural networks	14 October 2025 (10:30-12:20) 16 October 2025 (15:30-17:20)
6	Spatial localization and detection Segmentation	21 October 2025 (10:30-12:20)
7	No Lecture	No Lecture
8	Understanding and Visualizing CNNs Recurrent Neural networks	04 November 2025 (10:30-12:20) 06 November 2025 (15:30-17:20)
9	Word Embeddings and Language Models Unsupervised Learning and Generative Models	11 November 2025 (10:30-12:20) 13 November 2025 (15:30-17:20)
10	Unsupervised Learning and Generative Models	18 November 2025 (10:30-12:20)	>>
11	Project Progress Presentations Deep reinforcement learning, Q&A	25 November 2025 (10:30-12:30) 27 November 2025 (15:30-17:20)
12	Midterm	04 December 2025 (15:30-17:20)
13	Literature Survey Presentations	09 December 2025 (10:30-12:30)
14	Deep reinforcement learning, Q&A Project Presentations	16 December 2025 (10:30-12:20) 18 December 2025 (15:30-17:20)
15	Project Presentations	23 December 2025 (10:30-12:20)