Nhanh 1: TF-IDF+LogReg, F1-macro=0.9822

nhanh1_v1/metadata.json

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+{
+  "version": "nhanh1_v1",
+  "branch": "nhanh1_supervised_multiclass",
+  "architecture": "tfidf_logreg",
+  "trained_at": "2026-07-16T12:16:08",
+  "train_rows": 54236,
+  "test_rows": 13560,
+  "f1_macro": 0.9821905121114611,
+  "train_time_s": 14.00293961600255,
+  "labels": {
+    "0": "normal",
+    "1": "union_based",
+    "2": "error_based",
+    "3": "boolean_blind",
+    "4": "time_blind"
+  },
+  "dataset": "data/processed/nhanh1_train.csv",
+  "tfidf": {
+    "analyzer": "char_wb",
+    "ngram_min": 2,
+    "ngram_max": 4,
+    "max_features": 50000
+  }
+}

nhanh1_v1/model.joblib

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+oid sha256:033baac14b25eefa63c81189aec21b08b9c579545ec2ae5bed2170cf7aafe404
+size 2000943

nhanh1_v1/vectorizer.joblib

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+oid sha256:f210844f1d49f9c0042c71ded78287f3522480166ab9496cfdbcf9879d453144
+size 1680347