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Matteo Alberti, Artificial Intelligence and Deep
Learning in Quantum Computing @ Atos
Email: matteo.alberti@deeplearningitalia.net
From Perceptron to Multi Layer Perceptron (MLP)
𝑎𝑖 = 𝑓( 𝑖 𝑤𝑖 𝑥𝑖 + 𝑏𝑖) “Not-Linear Discrimination”
Where 𝑓 𝑥 Activation Function
without 𝑓 𝑥 ANN regresses into linear form:
𝐿 𝑇 = 𝑊𝑇 𝐿 𝑇−1 = 𝑊𝑇 𝑊𝑇−1 𝐿 𝑇−2 =
⋯ 𝑊𝑇 𝑊𝑇−1. . . 𝑊1 𝐿0 = 𝑊𝐿0
One single neuron isn’t able to approximate enough
well some decision functions (typically not linear).
We can model that stacking “layers” of neurons.
Activation Functions
There are several activation functions:
In Deep Neural Networks it’s useful lighten ours AF
Sigmoid: 𝑦 = 𝜎 𝑥 = 1/(1 + ⅇ−𝑥
)
“special case of Logistic Function”
“Vanishing-Gradient Problem”
Rectified Linear Unit (ReLu): 𝑦 = max(0, 𝑥)
“Accelerate convergence of weights ”
• Back-Propagation, Gradient Descent
• Optimizers
• Neural Networks in Regression and Classification
Practical Example (1)
Deep Learning: Cutting-edge approach to:
• Computer Vision
• Natural Language Processing
• Reinforcement Learning
• Finance
Artificial Intelligence Applications
Computer Vision & Convolutional Neural Networks
Lasciamolo al Prossimo Speaker
Natural Language Processing
1 Text Classification: Classifying the topic or theme of a document (i.e.
Sentiment Analysis)
2 Language Modeling: Predict the next word given the previous
words. It is fundamental for other tasks
3 Speech Recognition: Mapping an acoustic signal containing a
spoken natural language utterance into the corresponding sequence
of words intended by the speaker
4 Caption Generation: Given a digital image, such as a photo, generate
a textual description of the contents of the image.
Natural Language Processing
5 Machine Translation: Automatic translation of text or speech from one
language to another, is one [of] the most important applications of
NLP
6 Document Summarization: It is the task where a short description of a
text document is created
7 Question Answering: It is the task where the system tries to answer a
user query that is formulated in the form of a question by returning the
appropriate noun phrase such as a location, a person, or a date. (i.e.
Who killed President Kennedy? Oswald)
Long Short-Term Memory (LSTM)
𝒄 𝒕 (cell state) represents the internal memory of the
cell which stores both short term memory and long-
term memories
𝒉 𝒕 (hidden state): the hidden state can decide to only
retrive the short or long-term or both types of
memory stored in the cell state to make the next
prediction.
𝒊 𝒕, 𝒇 𝒕 (input/forget gate) How much information from
current input (and previous) flows to the cell state
𝒐 𝒕 (output) Decides how much information from the
current cell state flows into the hidden state, so that if
needed LSTM can only pick the long-term memories
or short-term memories and long-term memories
Word Embedding & Language Modeling
Word embedding is the collective
name for a set of language
modeling and feature learning
techniques for natural language
processing (NLP) where words or
sentences from the vocabulary
are mapped to vectors of real
numbers.
These vectors are semantically
correlated by metrics like cosine
distance
• RNN – LSTM
• As I said before, not just one taks
• Autoencoders
• Deep Reinfocement Learning
• And . . . Finance!
Practical Example (2)

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Intro to deep learning_ matteo alberti

  • 1. Matteo Alberti, Artificial Intelligence and Deep Learning in Quantum Computing @ Atos Email: matteo.alberti@deeplearningitalia.net
  • 2.
  • 3.
  • 4. From Perceptron to Multi Layer Perceptron (MLP) 𝑎𝑖 = 𝑓( 𝑖 𝑤𝑖 𝑥𝑖 + 𝑏𝑖) “Not-Linear Discrimination” Where 𝑓 𝑥 Activation Function without 𝑓 𝑥 ANN regresses into linear form: 𝐿 𝑇 = 𝑊𝑇 𝐿 𝑇−1 = 𝑊𝑇 𝑊𝑇−1 𝐿 𝑇−2 = ⋯ 𝑊𝑇 𝑊𝑇−1. . . 𝑊1 𝐿0 = 𝑊𝐿0 One single neuron isn’t able to approximate enough well some decision functions (typically not linear). We can model that stacking “layers” of neurons.
  • 5. Activation Functions There are several activation functions: In Deep Neural Networks it’s useful lighten ours AF Sigmoid: 𝑦 = 𝜎 𝑥 = 1/(1 + ⅇ−𝑥 ) “special case of Logistic Function” “Vanishing-Gradient Problem” Rectified Linear Unit (ReLu): 𝑦 = max(0, 𝑥) “Accelerate convergence of weights ”
  • 6. • Back-Propagation, Gradient Descent • Optimizers • Neural Networks in Regression and Classification Practical Example (1)
  • 7. Deep Learning: Cutting-edge approach to: • Computer Vision • Natural Language Processing • Reinforcement Learning • Finance Artificial Intelligence Applications
  • 8. Computer Vision & Convolutional Neural Networks Lasciamolo al Prossimo Speaker
  • 9. Natural Language Processing 1 Text Classification: Classifying the topic or theme of a document (i.e. Sentiment Analysis) 2 Language Modeling: Predict the next word given the previous words. It is fundamental for other tasks 3 Speech Recognition: Mapping an acoustic signal containing a spoken natural language utterance into the corresponding sequence of words intended by the speaker 4 Caption Generation: Given a digital image, such as a photo, generate a textual description of the contents of the image.
  • 10. Natural Language Processing 5 Machine Translation: Automatic translation of text or speech from one language to another, is one [of] the most important applications of NLP 6 Document Summarization: It is the task where a short description of a text document is created 7 Question Answering: It is the task where the system tries to answer a user query that is formulated in the form of a question by returning the appropriate noun phrase such as a location, a person, or a date. (i.e. Who killed President Kennedy? Oswald)
  • 11. Long Short-Term Memory (LSTM) 𝒄 𝒕 (cell state) represents the internal memory of the cell which stores both short term memory and long- term memories 𝒉 𝒕 (hidden state): the hidden state can decide to only retrive the short or long-term or both types of memory stored in the cell state to make the next prediction. 𝒊 𝒕, 𝒇 𝒕 (input/forget gate) How much information from current input (and previous) flows to the cell state 𝒐 𝒕 (output) Decides how much information from the current cell state flows into the hidden state, so that if needed LSTM can only pick the long-term memories or short-term memories and long-term memories
  • 12. Word Embedding & Language Modeling Word embedding is the collective name for a set of language modeling and feature learning techniques for natural language processing (NLP) where words or sentences from the vocabulary are mapped to vectors of real numbers. These vectors are semantically correlated by metrics like cosine distance
  • 13. • RNN – LSTM • As I said before, not just one taks • Autoencoders • Deep Reinfocement Learning • And . . . Finance! Practical Example (2)

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