Add EP to BP gradient sparsity analysis

EP CIFAR d=256: s(1e-6)=100%, mean_norm=1.41e-04
EP produces networks where ALL samples have non-zero BP gradients,
unlike DFA (0.4%), SB (21%), CB (3%). EP is closer to BP (98.7%).

Updated clean_sparsity_summary.csv (980 rows, now includes EP).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/results/confirmatory/clean_sparsity/cifar_ep_s42.json b/results/confirmatory/clean_sparsity/cifar_ep_s42.json
new file mode 100644
index 0000000..e7a15a1
--- /dev/null
+++ b/results/confirmatory/clean_sparsity/cifar_ep_s42.json
@@ -0,0 +1,91 @@
+{
+  "method": "ep",
+  "seed": 42,
+  "d": 256,
+  "per_layer": [
+    {
+      "layer": 0,
+      "mean_norm": 0.0001512095332145691,
+      "median_norm": 0.00011338386684656143,
+      "support": {
+        "1e-08": 1.0,
+        "1e-07": 1.0,
+        "1e-06": 1.0,
+        "1e-05": 1.0,
+        "0.0001": 0.58984375
+      },
+      "r_inf_mean": 0.32484251260757446,
+      "pr_mean": 0.18121182918548584,
+      "hoyer_mean": 0.5369894504547119,
+      "topk_energy": {
+        "1": 0.18754106760025024,
+        "5": 0.4041516184806824,
+        "10": 0.5543932914733887,
+        "25": 0.793650209903717
+      }
+    },
+    {
+      "layer": 1,
+      "mean_norm": 0.00015127702499739826,
+      "median_norm": 0.00011280256876489148,
+      "support": {
+        "1e-08": 1.0,
+        "1e-07": 1.0,
+        "1e-06": 1.0,
+        "1e-05": 1.0,
+        "0.0001": 0.58984375
+      },
+      "r_inf_mean": 0.3246065080165863,
+      "pr_mean": 0.1813136637210846,
+      "hoyer_mean": 0.5365023016929626,
+      "topk_energy": {
+        "1": 0.18746019899845123,
+        "5": 0.40398016571998596,
+        "10": 0.5541672110557556,
+        "25": 0.7939640283584595
+      }
+    },
+    {
+      "layer": 2,
+      "mean_norm": 0.00014867246500216424,
+      "median_norm": 0.00011029186134692281,
+      "support": {
+        "1e-08": 1.0,
+        "1e-07": 1.0,
+        "1e-06": 1.0,
+        "1e-05": 1.0,
+        "0.0001": 0.55859375
+      },
+      "r_inf_mean": 0.329489529132843,
+      "pr_mean": 0.1764482706785202,
+      "hoyer_mean": 0.5301411151885986,
+      "topk_energy": {
+        "1": 0.1931612193584442,
+        "5": 0.4118368625640869,
+        "10": 0.5616813898086548,
+        "25": 0.7989727258682251
+      }
+    },
+    {
+      "layer": 3,
+      "mean_norm": 0.0001509760768385604,
+      "median_norm": 0.00010986281995428726,
+      "support": {
+        "1e-08": 1.0,
+        "1e-07": 1.0,
+        "1e-06": 1.0,
+        "1e-05": 1.0,
+        "0.0001": 0.57421875
+      },
+      "r_inf_mean": 0.33422771096229553,
+      "pr_mean": 0.1741165667772293,
+      "hoyer_mean": 0.5330758094787598,
+      "topk_energy": {
+        "1": 0.1962406039237976,
+        "5": 0.4156147837638855,
+        "10": 0.5644109845161438,
+        "25": 0.7961149215698242
+      }
+    }
+  ]
+}
\ No newline at end of file