Deep Learning Autoencoder Models
ο»ΏDeep Learning ? Autoencoder Models
Davide Bacciu
Dipartimento di Informatica Universit? di Pisa
Intelligent Systems for Pattern Recognition (ISPR)
Introduction Deep Autoencoder
Applications
Generative Models Wrap-up Deep Learning Module Lecture
Generative Graphical Models
Bayesian Models/Nets
z
w
N
K
M
? Unsupervised data understanding
? Interpretability ? Weak on supervised
performance
Markov Random Fields
Yi
Yj
Xi
? Knowledge and constraints through feature functions
? CRF: the supervised way to generative
? Computationally heavy
Dynamic Models
t S21
Q12 S22
Q22 S23
Y2
? Topology unfolds on data structure
? Structured data processing
? Complex causal relationships
Introduction Deep Autoencoder
Applications
Generative Models Wrap-up Deep Learning Module Lecture
Module's Take Home Messages
? Consider using generative models when
? Need interpretability ? Need to incorporate prior knowledge ? Unsupervised learning or learning with partially observable
supervision ? Need reusable/portable learned knowledge
? Consider avoiding generative models when
? Having tight computational constraints ? Dealing with raw, noisy low level data
? Variational inference
? Efficient way to learn an approximation to intractable distributions
? The variational function can be a neural network
Introduction Deep Autoencoder
Applications
Deep Learning
Generative Models Wrap-up Deep Learning Module Lecture
AI
Prediction
Hard-coded expert
reasoning
Trainable predictor
Expertdesigned features
Learned features
ANN
ML
Input
Deep Learning
Learned feature hierarchy
Introduction Deep Autoencoder
Applications
Module Outline
Generative Models Wrap-up Deep Learning Module Lecture
? Recurrent, recursive and contextual (Micheli)
? Recurrent NN training refresher ? Recursive NN ? Graph processing
? Foundational models
? Deep Autoencoders and RBM ? Convolutional Neural Networks ? Gated Recurrent Networks (LSTM, ...)
? Advanced topics
? Adversarial models, memory networks and attentional models ? Variational deep learning ? Deep reinforcement learning
API and applications seminars
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