Autoencoders
Umberto Michelucci
Abstract
In this chapter, we look at autoencoders. This chapter is a theoretical one, covering the mathematics and the fundamental concepts of autoencoders. We discuss what they are, what their limitations are, the typical use cases, and then look at some examples. We start with a general introduction to autoencoders, and we discuss the role of the activation function in the output layer and the loss function. We then discuss what the reconstruction error is. Finally, we look at typical applications, such as dimensionality reduction, classification, denoising, and anomaly detection.
Topics & Concepts
Dimensionality reductionArtificial intelligenceComputer scienceNoise reductionFunction (biology)Pattern recognition (psychology)Anomaly detectionCurse of dimensionalityAnomaly (physics)Reduction (mathematics)AlgorithmMathematicsPhysicsBiologyGeometryEvolutionary biologyCondensed matter physicsImage and Signal Denoising Methods