핵심 개념
Tree Cross Attention (TCA) efficiently retrieves information for inference by organizing tokens in a tree structure and selecting a subset of nodes logarithmically, outperforming traditional methods.
초록
1. Abstract:
Cross Attention is popular for information retrieval but can be inefficient.
TCA organizes data in a tree structure and selects a logarithmic subset of nodes for efficient inference.
2. Introduction:
ML workload is dominated by inference, driving the need for efficient attention mechanisms.
Perceiver IO compresses contextual information into latent tokens for inference but faces limitations.
3. Tree Cross Attention:
TCA organizes tokens in a tree structure and retrieves a subset of nodes for inference.
ReTreever architecture leverages TCA for token-efficient inference.
4. Experiments:
TCA achieves comparable performance to Cross Attention with significantly fewer tokens.
ReTreever outperforms Perceiver IO while using the same number of tokens.
5. Related Work:
Comparison with prior works on tree-based attention mechanisms and Graph Neural Networks.
통계
Cross Attention scans the full set of O(N) tokens for each prediction.
Perceiver IO distills information to a smaller-sized set of latent tokens L < N for inference.
TCA retrieves information from a logarithmic O(log(N)) number of tokens for inference.
인용구
"Tree Cross Attention organizes data in a tree structure and performs a tree search for efficient retrieval."
"TCA outperforms traditional methods by selecting a subset of nodes logarithmically for inference."