{
  "name": "cs8-rand-v4",
  "condition": "rand",
  "version": "v4",
  "description": "CS8 rand-mapping condition v4. Negative control counterpart to cs8_fixed_v4. Inner alias drawn uniformly at random from all 20 aliases per example. Outer alias is still fixed and shown in prompt. No stable table\u2192inner_alias mapping exists across training examples.",
  "key_difference_from_fixed": "inner_alias = random.choice(CS8_ALL_ALIASES) per example, instead of TABLE_ALIAS_MAP[inner_table]",
  "expected_behavior": {
    "exact_match_accuracy": "~5% (chance = 1/20)",
    "linear_probe_accuracy_L21": "~100% (inner table identity still relayed)",
    "fisher_ratio_L21": "~0.06 (geometry scrambled)",
    "silhouette_L21": "~-0.25 (wrong-class centroids closer than correct)"
  },
  "alias_groups": {
    "T1": [
      "emp",
      "inv",
      "txn",
      "mgr",
      "ord",
      "prod",
      "cust",
      "dept",
      "acct",
      "sale"
    ],
    "T2": [
      "tsk",
      "brc",
      "rgn",
      "lne",
      "prj",
      "empl",
      "ordr",
      "catg",
      "schd",
      "shp"
    ]
  },
  "table_alias_map_outer": {
    "employees": "emp",
    "invoices": "inv",
    "transactions": "txn",
    "managers": "mgr",
    "orders": "ord",
    "products": "prod",
    "customers": "cust",
    "departments": "dept",
    "accounts": "acct",
    "sales": "sale",
    "tasks": "tsk",
    "branches": "brc",
    "regions": "rgn",
    "items": "lne",
    "projects": "prj",
    "staff": "empl",
    "requests": "ordr",
    "categories": "catg",
    "schedules": "schd",
    "shipments": "shp"
  },
  "split_sizes": {
    "train": 19200,
    "val": 4800
  },
  "examples_per_outer_alias": {
    "train": 960,
    "val": 240
  },
  "generation": {
    "seed": 42,
    "generated_at": "2026-06-02T23:34:16.629515",
    "script": "src/00_data/generate_cs8_rand_v4.py"
  }
}