CBSE Class 12th AI (Artificial Intelligence) | 10. Introduction to Neural Networks by Abraham | Learn Smarter
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10. Introduction to Neural Networks

Neural networks are computational models that simulate the human brain to process information, forming the foundation of deep learning in AI. They consist of interconnected layers of neurons, which learn from large datasets to perform tasks such as image recognition and language processing. While highly effective, neural networks have limitations, including requiring substantial computational resources and large amounts of data.

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Sections

  • 10

    Introduction To Neural Networks

    This section introduces Neural Networks as a fundamental AI technique modeled after human brain function to perform tasks like image recognition and natural language processing.

  • 10.1

    What Is A Neural Network?

    A Neural Network is a computational model that mimics the way the human brain processes information through interconnected layers of nodes.

  • 10.2

    Structure Of A Neural Network

    The structure of a neural network is composed of three main layers: input, hidden, and output layers, each serving a distinct role in data processing.

  • 10.3

    Working Of A Neural Network

    This section outlines the operational steps of a neural network, detailing how data is processed from input to output.

  • 10.4

    Types Of Neural Networks

    This section introduces different types of neural networks, focusing on their distinct structures and use cases.

  • 10.5

    Applications Of Neural Networks

    Neural networks have transformative applications across various fields, including image and speech recognition, healthcare, finance, and autonomous vehicles.

  • 10.6

    Limitations Of Neural Networks

    Neural networks, while powerful, come with significant limitations such as requiring vast amounts of data and being computationally intensive.

  • 10.1.1

    Key Concepts

    This section introduces the foundational concepts of neural networks that simulate human brain functions.

  • 10.2.1

    Input Layer

    The input layer is the first layer of a neural network where data enters the system, with each neuron representing a feature of the input data.

  • 10.2.2

    Hidden Layers

    Hidden layers in neural networks perform computations by processing inputs from the input layer.

  • 10.2.3

    Output Layer

    The output layer in a neural network is responsible for providing the final prediction or classification result based on the processed information.

  • 10.3.1

    Step 3: Add Bias

    Adding bias is a crucial step in the neural network process, helping to fine-tune outputs for improved accuracy.

  • 10.3.2

    Step 4: Apply Activation Function

    Activation functions determine whether a neuron should be activated in a neural network, playing a critical role in transforming the input into output.

  • 10.3.3

    Step 5: Output

    This section discusses the final output stage of a neural network, where the processed data is generated as an output from the model.

  • 10.4.1

    Feedforward Neural Network (Fnn)

    Feedforward Neural Networks (FNNs) are a type of neural network where information moves in one directionβ€”from input to output, making them fundamental for tasks like image classification.

  • 10.4.2

    Convolutional Neural Network (Cnn)

    Convolutional Neural Networks (CNNs) are specialized neural networks designed for processing grid-like data, such as images, enabling efficient feature extraction and improved performance in tasks like image recognition.

  • 10.4.3

    Recurrent Neural Network (Rnn)

    Recurrent Neural Networks (RNNs) are specialized neural networks designed to process sequential data, capable of retaining information from previous inputs.

  • 10.5.1

    Key Terms

    This section defines essential terms related to neural networks, providing a foundational vocabulary for understanding the topic.

  • 10.5.1.1

    Neuron

    This section introduces the concept of a neuron as the basic processing unit of a neural network, emphasizing its role in receiving, processing, and transmitting information.

  • 10.5.1.2

    Weight

    Weights are crucial parameters in neural networks that determine the significance of inputs.

  • 10.5.1.3

    Bias

    Bias in neural networks is a crucial element that adjusts the output of a neuron, allowing for better learning and accuracy in predictions.

  • 10.5.1.4

    Activation Function

    Activation functions determine whether a neuron in a neural network should be activated based on the input it receives.

  • 10.5.1.5

    Feedforward

    Feedforward networks are a type of neural network where data flows in one direction from input to output, allowing for straightforward architecture in complex AI tasks.

  • 10.5.1.6

    Backpropagation

    Backpropagation is a crucial method in neural networks used to update weights and minimize errors.

  • 10.6

    Summary

    This section summarizes the fundamentals of neural networks and their applications in artificial intelligence.

Class Notes

Memorization

What we have learnt

  • Neural networks mimic human...
  • They are composed of input,...
  • Neural networks have variou...

Final Test

Revision Tests