search_space.json

{
    "model_name":{"_type":"choice","_value":["LinearRegression", "SVR", "KNeighborsRegressor", "DecisionTreeRegressor"]},
    "svr_kernel": {"_type":"choice","_value":["linear", "poly", "rbf"]},
    "knr_weights": {"_type":"choice","_value":["uniform", "distance"]}
}