Robustness of Similarity-based Positional Encoding Under Rotations: Theoretical Analysis and Experimental Validation

arXiv:2606.17961v1 Announce Type: cross Abstract: Positional encoding is a fundamental component of Transformer architectures, as it injects information about the spatial or sequential arrangement of inputs. Among recent alternatives to standard absolute and sinusoidal encodings, similarity-based positional encoding (simPE) has emerged as a flexible framework for representing positional structure through pairwise relations. simPE was originally designed for medical imaging applications, where geometric robustness is especially relevant: small rotations naturally arise during image acquisition,

Source: arXiv cs.AI — read the full report at the original publisher.

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