TensorFlow Basics

What is TensorFlow?

• An open-source software library for numerical computation, particularly well-suited for large-scale machine learning and deep learning tasks.
• Developed by the Google Brain team, initially released in 2015.

Key Features

• Automatic Differentiation: computes gradients of the loss function with respect to the model's parameters.
• Distributed Training: allows training of models on multiple machines, making it scalable.
• AutoGraph: converts Python code into TensorFlow graphs, enabling more efficient execution.
• Eager Execution: enables immediate execution of TensorFlow operations, making it easier to debug and test.

TensorFlow Architecture

• TensorFlow Graph: a dataflow graph that represents the computation, consisting of nodes (operations) and edges (data dependencies).
• TensorFlow Session: a runtime environment that executes the graph, providing a way to interact with the graph.
• TensorFlow Ops: the basic operations that can be performed on tensors, such as addition, multiplication, and matrix multiplication.

Tensor Representation

• Tensors: multi-dimensional arrays of numerical values, used to represent data and model parameters.
• Tensor Ranks: the number of dimensions in a tensor, with scalar (0), vector (1), matrix (2), and tensor (3) being common examples.
• Tensor Shapes: the size of each dimension in a tensor, e.g., a 3x4 matrix has a shape of (3, 4).

TensorFlow APIs

• TensorFlow Core: the low-level API, providing direct access to TensorFlow's functionality.
• Keras API: a high-level API, built on top of TensorFlow, providing an easier-to-use interface for building and training machine learning models.
• Estimators API: a high-level API, providing a simpler way to train and evaluate machine learning models.

Applications

• Machine Learning: TensorFlow is widely used for building and training machine learning models, including neural networks, decision trees, and support vector machines.
• Deep Learning: TensorFlow is particularly well-suited for deep learning tasks, such as image and speech recognition, natural language processing, and generative models.
• Computer Vision: TensorFlow is used in computer vision applications, such as object detection, image segmentation, and image generation.

Learn about the basics of TensorFlow, including its features, architecture, tensor representation, APIs, and applications in machine learning, deep learning, and computer vision.