Add 50K persistent-channel scan for Qwen/Qwen3.5-4B

.gitattributes

@@ -58,3 +58,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 # Video files - compressed
 *.mp4 filter=lfs diff=lfs merge=lfs -text
 *.webm filter=lfs diff=lfs merge=lfs -text
+analysis/cross_model_persistent_scan_50k_qwen35_2b_data/Qwen__Qwen3.5-4B/layer_features.csv filter=lfs diff=lfs merge=lfs -text

analysis/cross_model_persistent_scan_50k_qwen35_2b_data/Qwen__Qwen3.5-4B/COMPLETE.json

@@ -0,0 +1,461 @@
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+      "persistent_channel_score": 0.5074097170343743,
+      "layer_count": 32,
+      "layer_coverage": 1.0,
+      "near_universal_layer_fraction": 0.0,
+      "mean_universal_score": 0.6764761741110331,
+      "min_universal_score": 0.3364529073517992,
+      "min_worst_group_sign_consistency": 0.501466275659824,
+      "min_worst_group_strong_coverage": 0.13055954088952654,
+      "mean_topk_coverage": 0.545218125,
+      "median_relative_strength": 25.79578186218189,
+      "median_magnitude_cv": 1.0191546480555085,
+      "cross_layer_sign_stability": 0.75,
+      "mean_activation_across_layers": 0.6894384949212259,
+      "max_abs_mean_activation": 2.2488470126484352
+    }
+  ],
+  "finished_at": "2026-10-20T11:32:24"
+}

analysis/cross_model_persistent_scan_50k_qwen35_2b_data/Qwen__Qwen3.5-4B/TOP.txt

@@ -0,0 +1,107 @@
+MODEL: Qwen/Qwen3.5-4B
+SEQUENCES: 50,000
+LAYERS: 32
+HIDDEN SIZE: 2560
+
+TOP PERSISTENT CHANNELS
+========================================================================================================================
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analysis/cross_model_persistent_scan_50k_qwen35_2b_data/Qwen__Qwen3.5-4B/layer_features.csv

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analysis/cross_model_persistent_scan_50k_qwen35_2b_data/Qwen__Qwen3.5-4B/runtime.json

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+{
+  "model": "Qwen/Qwen3.5-4B",
+  "loader": "AutoModelForMultimodalLM",
+  "stack": "model.language_model.layers",
+  "n_layers": 32,
+  "hidden_size": 2560,
+  "target_sequences": 50000,
+  "batch_size": 16,
+  "max_input_tokens": 128,
+  "prompt_pipeline": "original_qwen35_2b_v1",
+  "sources": [
+    "ultrachat",
+    "fineweb_edu",
+    "openwebmath",
+    "cosmopedia_v2"
+  ],
+  "formats": [
+    "raw",
+    "qa_short",
+    "user_assistant",
+    "hash_sections",
+    "xml_document",
+    "key_point",
+    "continue",
+    "next_sentence",
+    "context_answer",
+    "brackets",
+    "reader_reply",
+    "plain_instruction",
+    "title",
+    "summary",
+    "minimal",
+    "note",
+    "completion",
+    "quoted",
+    "dash",
+    "task_block"
+  ],
+  "grouping": "source::format",
+  "reference_prompt_tokenizer": "Qwen/Qwen3.5-2B",
+  "seed": 3407,
+  "min_input_tokens": 48,
+  "top_fraction": 0.015625,
+  "strong_multiplier": 3.0
+}