
Neural ODEs model continuous-time dynamics with a neural network as the derivative
Neural ODEs model continuous-time dynamics with a neural network as the derivative
Neural ODEs are a type of universal function approximator that can embed the knowledge of any physical laws governing a given data-set in the learning process. They are described by partial differential equations (PDEs) and can be categorized as neural fields due to their ability to process continuous spatial and time coordinates and output continuous PDE solutions.
Example
In a neural ODE framework, a neural network is trained to approximate the derivative of a system's state with respect to time, effectively learning the continuous-time dynamics of the system.
Understanding neural ODEs is crucial for enhancing the information content of limited data and improving the generalizability of machine learning models in applications with low data availability.
ill-conditioned matrices cause numerical instability: small input changes → large output changes
Ill-conditioned matrices amplify input perturbations, leading to significant output variability
Langevin dynamics does: adds noise to gradient descent to sample from a distribution
Langevin dynamics adds noise to gradient descent to sample from a distribution
Pre-LN transformers are easier to train
Pre-LN transformers use residual connections, allowing gradients to flow more smoothly during backpropagation
Lyapunov exponents measure: rate of divergence of nearby trajectories in a dynamical system
Lyapunov exponents measure the rate of divergence of nearby trajectories in a dynamical system
AdaGrad's learning rate decays to zero
AdaGrad adjusts learning rate by accumulating squared gradients, causing it to decay to zero as denominator grows exponentially
Stable Diffusion
Stable Diffusion generates images from text descriptions
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