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Age	Commit message (Collapse)	Author
2026-04-01	Add extended sparsity analysis: A4 per-layer, B1 snapshots, B2 active ↵	YurenHao0426
	subset, C1/C2 A4: Per-layer support — DFA/SB/CB layers 1-3 have 0% support at τ=1e-6 Only BP has ~95% support; only SB layer 0 has 53% B1: Snapshot evolution — old snapshot checkpoints have near-zero grads (data issue) B2: Active subset — with τ=1e-6, no active samples for non-BP methods C1: Active vs inactive cosine — only inactive subset exists for non-BP C2: Energy concentration — near-zero for non-BP methods Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>