{
  "spec_version": "1.0",
  "model_type": "regression",
  "feature_schema": {
    "n_features": 2,
    "feature_names": ["x0", "x1"],
    "categorical": [false, false]
  },
  "params": {},
  "basis_terms": [
    {"kind": "constant"},
    {"kind": "linear", "variable_idx": 0, "variable_name": "x0"},
    {"kind": "linear", "variable_idx": 1, "variable_name": "x1"},
    {
      "kind": "interaction",
      "parent1": {"kind": "linear", "variable_idx": 0, "variable_name": "x0"},
      "parent2": {"kind": "linear", "variable_idx": 1, "variable_name": "x1"}
    }
  ],
  "coefficients": [0.5, 1.0, -0.5, 2.0],
  "intercept": 0.0
}
