Difference between revisions of "Artificial Neural Networks and Deep Learning"

Revision as of 21:24, 30 September 2021

The following are last-minute news you should be aware of ;-)

24/09/2021: Removed last year practicals, this year they will be different!!! Python crash course moved at the end of the material
22/09/2021: Added colab crash course on Python 3 in the material session
18/09/2021: We skip exercising on 22/09 and added exercising on 15/12 I updated the schedule!
16/09/2021: Updated material on the first lectures + added reference to python tutorials in the material section
15/09/2021: Lectures start today!
14/09/2021: Website under maintenance ... come back later

Course Aim & Organization

Neural networks are mature, flexible, and powerful non-linear data-driven models that have successfully been applied to solve complex tasks in science and engineering. The advent of the deep learning paradigm, i.e., the use of (neural) network to simultaneously learn an optimal data representation and the corresponding model, has further boosted neural networks and the data-driven paradigm.

Nowadays, deep neural network can outperform traditional hand-crafted algorithms, achieving human performance in solving many complex tasks, such as natural language processing, text modeling, gene expression modeling, and image recognition. The course provides a broad introduction to neural networks (NN), starting from the traditional feedforward (FFNN) and recurrent (RNN) neural networks, till the most successful deep-learning models such as convolutional neural networks (CNN) and long short-term memories (LSTM).

The course major goal is to provide students with the theoretical background and the practical skills to understand and use NN, and at the same time become familiar and with Deep Learning for solving complex engineering problems.

Teachers

The course is composed of a blending of lectures and exercises by the course teachers and a teaching assistant.

• Matteo Matteucci: the course teacher and this is his webex room
• Giacomo Boracchi: the course co-teacher and this is his webex room
• Francesco Lattari: the course teaching assistant and this is his webex room
• Eugenio Lomurno: the course teaching assistant and this is his webex room

Course Program and Syllabus

This goal is pursued in the course by:

• Presenting major theoretical results underpinning NN (e.g., universal approx, vanishing/exploding gradient, etc.)
• Describing the most important algorithms for NN training (e.g., backpropagation, adaptive gradient algorithms, etc.)
• Illustrating the best practices on how to successfully train and use these models (e.g., dropout, data augmentation, etc.)
• Providing an overview of the most successful Deep Learning architectures (e.g., CNNs, sparse and dense autoencoder, LSTMs for sequence to sequence learning, etc.)
• Providing an overview of the most successful applications with particular emphasis on models for solving visual recognition tasks.

We have compiled a detailed syllabus of the course student can use to double check their preparation against before the exam.

• [2020/2021] Course Syllabus: a detailed list of topics covered by the course and which students are expected to know when approaching the exam

Detailed course schedule

A detailed schedule of the course can be found here; topics are just indicative while days and teachers are correct up to some last minute change (I will notify you by email). Please note that not all days we have lectures!!

Note: Lecture timetable interpretation
* On Wednesday, in T.2.1, Team 1, starts at 15:15, ends at 17:00
* On Wednesday, in T.2.1, Team 2, starts at 17:30, ends at 19:15
* On Thursday, in teacher webex room, starts at 16:30, ends at 19:15

Note: Teams division is based on your Codice Persona (and should minimize overlap)
* Team 1: odd Codice Persona
* Team 2: even Codice Persona

For a google calendar you might look here!

Course Evaluation

Course evaluation is composed of two parts:

• A written examination covering the whole program graded up to 22/30
• 2 home projects in the form of a "Kaggle style" challenge practicing the topics of the course graded up to 4/30 each

The final score will sum the grade of the written exam and the grade of the home projects. Home projects are not compulsory and they are issued only once a year.

Teaching Material (the textbook)

Lectures will be based on material from different sources, teachers will provide their slides to students as soon they are available. As a general reference you can check the following text, but keep in mind that teachers will not follow it strictly

• Deep Learning. Ian Goodfellow, Yoshua Bengio, and Aaron Courville, MIT Press, 2016.

Regarding the python programming language, we will provide you the basics about numpy and python scripting in case you want some introductory material you can check here

• Python tutorials: these are the official python tutorials, we suggest 3.An Informal Introduction to Python (Numbers, Strings, Lists), 4.More Control Flow Tools (if, for, range, functions), 5.Data Structures (More on lists, Dictionaries), 9.Classes.

Course Slides

Slides from the lectures by Matteo Matteucci

• [2021/2022] Course Introduction: introductory slides of the course with useful information about the course syllabus, grading, and the course logistics.
• [2021/2022] Machine Learning vs Deep Learning: introduction to machine learning paradigms and definition of deep learning with examples
• [2021/2022] From Perceptrons to Feed Forward Neural Networks: the original Perceptron model, Hebbian learning, feed-forward architecture, backpropagation and gradient descent, error functions and maximum likelihood estimation
• [2020/2021] Neural Networks Training: dealing with overfitting (weight decay, early stopping, dropout), vanishing gradient (ReLU and friends), batch normalization
• [2020/2021] Recurrent Neural Networks: learning with sequences, Recurrent Neural Networks, vanishing gradient, Long Short-Term Memories (LSTM), seq2seq model.
• [2020/2021] Word Embedding: neural autoencoders, language models, word embedding, word2vec, glove.
• [2020/2021] Beyond Sequence 2 Sequence Learning: Neural Turing Machines, attention mechanisms, the Transformer.

Slides from the lectures by Giacomo Boracchi are available in his webpage, for you

• Image Classification]: Image classification and related issues, template matching, image classification via nearest neighbors methods, image classification via linear classifiers, image classification via hand-crafted features.
• Convolutional Neural Networks: From hand-crafted features to convolutional neural networks.
• Training Convolutional Neural Networks: How to train CNNs, famous architectures, data augmentation, and the like.
• Convolutional Neural Networks for Image Segmentation: CNN architectures for segmentation and detection.
• Convolutional Neural Networks for Localization and Object Detection
• Generative Adversarial Networks

Slides from the practicals by Francesco Lattari and Eugenio Lomurno

• A Crash on Python: a Colab notebook with a crash course on Python 3 to prepare for the practicals!
• Notebook 1: NumPy Arrays vs TensorFlow2 Tensors
• Notebook 2: FeedForward Neural Network