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About this paper
Zhongxin Chen, Songhao Wu, Heng Cui, Cong Li, Xiao Zhou, Rui Yan
SpecMRL learns a spectral basis for embedding prefixes, changing the coordinate order used by Matryoshka Representation Learning (MRL) to form shorter vectors. On Qwen3-0.6B, its half-dimensional embedding scores 61.61 on the English MTEB average, above half-dimensional MRL at 60.54 and full-dimensional MRL at 60.97. This result applies to that benchmark average, not every task or compression level.
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