Task2Box: Box Embeddings for Modeling Asymmetric Task Relationships
CVPR 2024(2024)
摘要
Modeling and visualizing relationships between tasks or datasets is an
important step towards solving various meta-tasks such as dataset discovery,
multi-tasking, and transfer learning. However, many relationships, such as
containment and transferability, are naturally asymmetric and current
approaches for representation and visualization (e.g., t-SNE do not readily
support this. We propose Task2Box, an approach to represent tasks using box
embeddings – axis-aligned hyperrectangles in low dimensional spaces – that
can capture asymmetric relationships between them through volumetric overlaps.
We show that Task2Box accurately predicts unseen hierarchical relationships
between nodes in ImageNet and iNaturalist datasets, as well as transferability
between tasks in the Taskonomy benchmark. We also show that box embeddings
estimated from task representations (e.g., CLIP, Task2Vec, or attribute based)
can be used to predict relationships between unseen tasks more accurately than
classifiers trained on the same representations, as well as handcrafted
asymmetric distances (e.g., KL divergence). This suggests that low-dimensional
box embeddings can effectively capture these task relationships and have the
added advantage of being interpretable. We use the approach to visualize
relationships among publicly available image classification datasets on popular
dataset hosting platform called Hugging Face.
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