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Learning a Fourier Transform for Linear Relative Positional Encodings in Transformers
April 5, 2024, 4:42 a.m. | Krzysztof Marcin Choromanski, Shanda Li, Valerii Likhosherstov, Kumar Avinava Dubey, Shengjie Luo, Di He, Yiming Yang, Tamas Sarlos, Thomas Weingarten
cs.LG updates on arXiv.org arxiv.org
Abstract: We propose a new class of linear Transformers called FourierLearner-Transformers (FLTs), which incorporate a wide range of relative positional encoding mechanisms (RPEs). These include regular RPE techniques applied for sequential data, as well as novel RPEs operating on geometric data embedded in higher-dimensional Euclidean spaces. FLTs construct the optimal RPE mechanism implicitly by learning its spectral representation. As opposed to other architectures combining efficient low-rank linear attention with RPEs, FLTs remain practical in terms of …
abstract arxiv class cs.lg data embedded encoding fourier linear novel positional encoding transformers type
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