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Duan Yongping Tests Alibaba Again

Investor Duan Yongping bought back 301,400 Alibaba shares worth about $28.93 million, representing only 0.15% of his portfolio. The small position suggests renewed observation rather than strong conviction, especially as Alibaba explores AI cooperation with Apple while PDD Holdings receives a much larger allocation.

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Symmetry Explains Most SIREN Weight-Space Gaps

A study of roughly 1.8 million fitted SIRENs finds that applying exact function-preserving symmetries reproduces 79.1 of the 80.4 accuracy points separating shared- from random-initialization models. The results show symmetry is sufficient to explain the degradation, while cautioning that this does not prove naturally occurring symmetry causes the entire gap.

Reddit r/MachineLearningCommunity1d ago
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