v2 trading release: add v2/splits/split_metadata.json

v2/splits/split_metadata.json

@@ -0,0 +1,28 @@
+{
+  "source_parquet": "/fsx/home/liangwei.yang/.openclaw/workspace/projects/usermodeling-dataset/v2/v2_behavior_features_merged_pospnl_kline_v2_fixcost.parquet",
+  "wallet_list": "/fsx/home/liangwei.yang/.openclaw/workspace/projects/usermodeling-dataset/v2_outputs/wallet_ids_v2_2000_by_avg_tx_per_market_3-5_5-8_8-12_12plus_seed20260421.txt",
+  "wallets_selected_target": 2000,
+  "wallets_selected_found": 2000,
+  "rows_selected_total": 1544709,
+  "split_rule": "per-wallet sort by (block,log_index), split 70/15/15, warmup on val/test seq_idx_market>=2, then mark_price non-null filter",
+  "rows": {
+    "train_raw_before_markprice": 1080365,
+    "train": 1080240,
+    "validation_raw_before_warmup": 231711,
+    "validation_after_warmup_before_markprice": 200102,
+    "validation": 200092,
+    "test_raw_before_warmup": 232633,
+    "test_after_warmup_before_markprice": 203336,
+    "test": 203330
+  },
+  "wallet_coverage": {
+    "train_wallets": 1998,
+    "validation_wallets": 1996,
+    "test_wallets": 1999
+  },
+  "files": {
+    "train": "/fsx/home/liangwei.yang/.openclaw/workspace/projects/usermodeling-dataset/v2_outputs/v2_split_avgtx_2000_seed20260421_ratio701515_perwallet_fixcost/train.parquet",
+    "validation": "/fsx/home/liangwei.yang/.openclaw/workspace/projects/usermodeling-dataset/v2_outputs/v2_split_avgtx_2000_seed20260421_ratio701515_perwallet_fixcost/validation.parquet",
+    "test": "/fsx/home/liangwei.yang/.openclaw/workspace/projects/usermodeling-dataset/v2_outputs/v2_split_avgtx_2000_seed20260421_ratio701515_perwallet_fixcost/test.parquet"
+  }
+}