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2026-02-11Add PCA explained variance analysis for item-space dimension justificationHEADmainYurenHao0426
k=256 captures 99.9% variance from 4096-dim Qwen3-8B embeddings; 99% variance at k=41 confirms low intrinsic dimensionality of preference space. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>