  We introduce meta-learning algorithms that perform zero-shot weight-space
adaptation of neural network models to unseen tasks. Our methods repurpose the
popular generative image synthesis techniques of natural language guidance and
diffusion models to generate neural network weights adapted for tasks. We first
train an unconditional generative hypernetwork model to produce neural network
weights; then we train a second "guidance" model that, given a natural language
task description, traverses the hypernetwork latent space to find
high-performance task-adapted weights in a zero-shot manner. We explore two
alternative approaches for latent space guidance: "HyperCLIP"-based classifier
guidance and a conditional Hypernetwork Latent Diffusion Model ("HyperLDM"),
which we show to benefit from the classifier-free guidance technique common in
image generation. Finally, we demonstrate that our approaches outperform
existing multi-task and meta-learning methods in a series of zero-shot learning
experiments on our Meta-VQA dataset.

Machine Learning