Deep Learning Course: BTAIC601

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Questions and Answers

Which optimization technique adjusts the learning rate for each parameter individually, offering improved performance over standard gradient descent?

  • Momentum Optimizer
  • Batch Optimization
  • RMSProp (correct)
  • Gradient Descent

In the context of deep learning, what is the role of 'vectorization'?

  • Optimizing code to use parallel processing, especially on GPUs, for faster computation. (correct)
  • Converting images into a black and white format.
  • A method of reducing the number of dimensions in the input data.
  • The process of converting sequential data into a matrix format.

What is the primary difference between a fully connected network and a convolutional neural network (CNN) in image processing?

  • A fully connected network can process images of any size, while a CNN is limited to fixed-size images.
  • CNNs use backpropagation, while fully connected networks use forward propagation.
  • A CNN is specifically designed to exploit spatial hierarchies in data through convolution layers, whereas a fully connected network treats all inputs equally. (correct)
  • A fully connected network uses pooling layers which CNNs do not.

What purpose does 'pooling' serve within a convolutional neural network (CNN)?

<p>Reducing the spatial size of the representation to decrease the number of parameters and computation in the network. (C)</p> Signup and view all the answers

What is the key motivation behind using 'transfer learning' in deep learning?

<p>To accelerate training and improve performance by leveraging knowledge gained from training on a different, larger dataset. (B)</p> Signup and view all the answers

In transfer learning, what does 'fine-tuning' typically involve?

<p>Retraining only the last few layers of a pre-trained model on a new dataset. (D)</p> Signup and view all the answers

Which technique directly addresses overfitting by randomly omitting some neuron outputs during the training process??

<p>Dropout (A)</p> Signup and view all the answers

How does 'early stopping' prevent overfitting in neural networks?

<p>By halting the training process when the performance on a validation dataset starts to degrade. (A)</p> Signup and view all the answers

Which type of data are Recurrent Neural Networks (RNNs) specifically designed to process?

<p>Sequential or temporal data (A)</p> Signup and view all the answers

Which of the following is a common application of RNNs in text processing?

<p>Text generation (B)</p> Signup and view all the answers

What is the purpose of using LSTM or GRU units in recurrent neural networks?

<p>To handle the vanishing gradient problem and capture long-range dependencies in sequential data. (B)</p> Signup and view all the answers

What is the primary function of a Generative Adversarial Network (GAN)?

<p>To generate new, synthetic data that resembles the training data. (A)</p> Signup and view all the answers

In the context of Generative Deep Learning, what is 'image denoising'?

<p>Removing noise from images to improve their clarity. (D)</p> Signup and view all the answers

Which type of deep learning task involves assigning a label to each pixel in an image?

<p>Semantic segmentation (A)</p> Signup and view all the answers

What is the primary goal of 'object detection' in the context of deep learning and computer vision?

<p>To identify and locate specific objects within an image or video. (C)</p> Signup and view all the answers

What is the function of the 'filters' in Convolutional Neural Networks (CNNs)?

<p>To detect patterns or features in the image. (C)</p> Signup and view all the answers

Which of the following techniques helps in dealing with the vanishing gradient problem during the training of very deep neural networks?

<p>Skip connections (B)</p> Signup and view all the answers

In deep learning models, what is the role of 'Batch Normalization'?

<p>To normalize the activations of each layer, reducing internal covariate shift and stabilizing training. (A)</p> Signup and view all the answers

Bias-variance tradeoff is a central problem in machine learning. What does a high variance typically indicate about a model?

<p>The model is too complex and fits the training data very closely but does not generalize well to unseen data. (D)</p> Signup and view all the answers

Which of the following is NOT a common data augmentation technique used to improve the generalization of image recognition models?

<p>Increasing the dataset size by duplicating existing images (C)</p> Signup and view all the answers

Flashcards

Deep Learning

A type of machine learning where models learn hierarchical representations of data, often involving multiple layers of neural networks.

Deep Learning Models

Models implemented in Python using libraries like Keras/PyTorch and trained on real-world datasets.

Convolutional Neural Network (CNN)

A neural network specialized for processing data that has a grid-like topology, such as images.

Regularization, Training Optimization, Hyperparameter Selection

Techniques to prevent overfitting, improve generalization, and fine-tune model performance.

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Recurrent Neural Network (RNN)

A type of neural network designed for processing sequential data, like text or time series.

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Generative Deep Learning

A type of deep learning that can generate new data instances that resemble the training data.

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Artificial Neural Network

A simple neural network with an input layer, a hidden layer, and an output layer.

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Multilayer Perceptron (MLP)

A neural network with multiple layers (more than one hidden layer)

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Forward Propagation

The process of computing the output of a neural network, passing information forward through the layers.

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Back Propagation Learning

Adjusting a neural network's weights based on the error in its output, propagating the error backward through the network.

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Optimization Techniques

Methods used to minimize the loss function and improve the accuracy of a model.

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Gradient Descent

An optimization algorithm that iteratively adjusts model parameters to minimize the loss function.

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Batch Optimization

Dividing the training dataset into smaller subsets to compute the gradient more efficiently.

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Transfer Learning

A technique of reusing a pre-trained model on a new but similar task

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Hyperparameter tuning

Changing the learning rate of a model to optimize more accuratly

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Dropout

A way to handle overfitting in training

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Sequential Models

Networks for processing time-dependent data

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Generative Adversarial Network

Generating new data, AI artistry!

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Study Notes

  • BTAIC601 is a Deep Learning course with PCC7, 3 lecture hours, 1 tutorial hour, and 4 credits
  • Examination includes continuous assessment (20 marks), mid-semester exam (20 marks), and end-semester exam (60 marks, 3-hour duration)
  • Course pre-requisites include basic Machine Learning, Soft Computing, Data Structures, and Python knowledge

Course Objectives

  • Attendees will understand neural networks and deep learning.
  • Attendees will have working knowledge of neural networks and deep learning.
  • Attendees will explore parameters for neural networks.
  • Attendees will use CNN and RNN to solve real-world problems.

Course Outcomes

  • Students will implement deep learning models in Python using Keras/PyTorch with real-world datasets (CO1).
  • Students will design convolution networks for image classification (CO2).
  • Students will perform regularization, training optimization, and hyperparameter selection on deep models (CO3).
  • Students will design Recurrent Neural Networks for text and sequence classification (CO4).
  • Students will apply Generative Deep Learning for generating images (CO5).

Unit 1: Introduction to Neural Network (8 Hours)

  • Topics include Simple Artificial Neural Networks, Multilayer Perceptrons, Forward Propagation, Back Propagation Learning
  • Other topics are Building Blocks of Deep Neural Networks, Optimization Techniques, Gradient Descent and variants, Batch Optimization
  • Momentum Optimizer, RMSProp, Adam, Vectorization, Linear/Logistic Regression with Deep Neural Networks are also covered

Unit 2: Convolutional Neural Network (7 Hours)

  • Introduction to CNNs, distinguishing them from Fully Connected Networks.
  • Building blocks of CNNs include Filters, Convolution, Pooling and Activations.
  • Topics also include CNN training procedures, feeding images and videos, CNN architectures, Residual Networks, and Skip Connections.

Unit 3: Transfer Learning and Effective training in Deep Net (7 Hours)

  • Transfer learning is introduced, including the need for it, feature extraction, and fine-tuning
  • Focus on bias-variance tradeoff and techniques for managing overfitting and underfitting
  • Regularization, Data Augmentation, Early Stopping, Dropout, and Batch/Instance/Group Normalization are key topics

Unit 4: Deep Learning for Text and Sequences (7 Hours)

  • Introduces Sequential/Temporal Data and Sequential Models like Recurrent Neural Networks (RNNs)
  • Covers data representation using RNNs and working with text data.
  • Text generation using LSTM, LSTM/GRU, and Transformer Networks are discussed

Unit 5: Generative Deep Learning (7 Hours)

  • Neural Style Transfer, Variational Autoencoders, and Generative Adversarial Networks are key concepts.
  • Classical Supervised Tasks with Deep Learning, Image Denoising, Semantic Segmentation, and Object Detection are covered

Text Books

  • One is "Deep Learning with Python" by Francois Challot, 2nd edition
  • The other is "Deep Learning with Pytorch" by Francois Challot, 2nd edition

Reference Books

  • "Neural Networks and Deep Learning" by Michael Nielsen, 2016
  • "Deep Learning" by Ian Goodfellow, Yoshua Bengio, and Aaron Courville (The MIT Press)
  • "Pattern Classification" by Richard O. Duda, Peter E. Hart, David G. Stork, John Wiley & Sons Inc.

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