Een voorspellende RNN bouwen

Tijd om je eerste recurrent netwerk te bouwen! Het wordt een sequence-naar-vectormodel met een RNN-laag van twee lagen en een hidden_size van 32. Na de RNN-laag zet een eenvoudige lineaire laag de outputs om naar één te voorspellen waarde.

De volgende imports zijn al voor je gedaan:

import torch
import torch.nn as nn

Deze oefening maakt deel uit van de cursus

Gevorderde Deep Learning met PyTorch

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class Net(nn.Module):
    def __init__(self):
        super().__init__()
        # Define RNN layer
        self.rnn = ____(
            ____,
            ____,
            ____,
            ____,
        )
        self.fc = nn.Linear(32, 1)

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Gevorderde Deep Learning met PyTorch

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Learn how to train neural networks in a robust way. In this chapter, you will use object-oriented programming to define PyTorch datasets and models and refresh your knowledge of training and evaluating neural networks. You will also get familiar with different optimizers and, finally, get to grips with various techniques that help mitigate the problems of unstable gradients so ubiquitous in neural nets training.

Exercise 1: PyTorch and object-oriented programming Exercise 2: PyTorch Dataset Exercise 3: PyTorch DataLoader Exercise 4: PyTorch Model Exercise 5: Optimizers, training, and evaluation Exercise 6: Training loop Exercise 7: Optimizers Exercise 8: Model evaluation Exercise 9: Vanishing and exploding gradients Exercise 10: Initialization and activation Exercise 11: Activations: ReLU vs. ELU Exercise 12: Batch Normalization

Train neural networks to solve image classification tasks. In this chapter, you will learn how to handle image data in PyTorch and get to grips with convolutional neural networks (CNNs). You will practice training and evaluating an image classifier while learning about how to improve the model performance with data augmentation.

Exercise 1: Handling images with PyTorch Exercise 2: Image dataset Exercise 3: Data augmentation Exercise 4: Data augmentation in PyTorch Exercise 5: Convolutional Neural Networks Exercise 6: The convolutional layer Exercise 7: Building convolutional networks Exercise 8: Training image classifiers Exercise 9: Choosing augmentations Exercise 10: Dataset with augmentations Exercise 11: Image classifier training loop Exercise 12: Evaluating image classifiers Exercise 13: Multi-class model evaluation Exercise 14: Analyzing metrics per class

Build and train recurrent neural networks (RNNs) for processing sequential data such as time series, text, or audio. You will learn about the two most popular recurrent architectures, Long-Short Term Memory (LSTM) and Gated Recurrent Unit (GRU) networks, as well as how to prepare sequential data for model training. You will practice your skills by training and evaluating a recurrent model for predicting electricity consumption.

Exercise 1: Omgaan met sequenties met PyTorch Exercise 2: Reeksen genereren Exercise 3: Sequentiële dataset Exercise 4: Recurrent Neural Networks Exercise 5: Sequentiële architecturen Exercise 6: Een voorspellende RNN bouwen

Huidige oefening

Exercise 7: LSTM- en GRU-cellen Exercise 8: RNN vs. LSTM vs. GRU Exercise 9: LSTM-netwerk Exercise 10: GRU-netwerk Exercise 11: RNN's trainen en evalueren Exercise 12: RNN-trainingslus Exercise 13: Voorspellingsmodellen evalueren

Build multi-input and multi-output models, demonstrating how they can handle tasks requiring more than one input or generating multiple outputs. You will explore how to design and train these models using PyTorch and delve into the crucial topic of loss weighting in multi-output models. This involves understanding how to balance the importance of different tasks when training a model to perform multiple tasks simultaneously.

Exercise 1: Multi-input models Exercise 2: Two-input dataset Exercise 3: Two-input model Exercise 4: Training two-input model Exercise 5: Multi-output models Exercise 6: Two-output Dataset and DataLoader Exercise 7: Two-output model architecture Exercise 8: Training multi-output models Exercise 9: Evaluation of multi-output models and loss weighting Exercise 10: Multi-output model evaluation Exercise 11: Loss weighting Exercise 12: Wrap-up