[
    {
        "params": {
            "prob_evaluate": 0.5,
            "x_candidates": [
                0,
                1,
                2,
                3,
                0.7854,
                1.5708
            ]
        }
    },
    {
        "params": {
            "prob_evaluate": 0.6,
            "x_candidates": [
                0,
                1,
                2,
                0.7854,
                1.5708,
                3.1416,
                4.7124,
                6.2832
            ]
        }
    },
    {
        "params": {
            "prob_evaluate": 0.3,
            "x_candidates": [
                0,
                1,
                2,
                0.7854,
                1.5708,
                3.1416
            ]
        }
    },
    {
        "params": {
            "prob_evaluate": 0.7,
            "x_candidates": [
                0,
                1,
                2,
                0.7854,
                1.5708,
                3.1416,
                4.7124
            ]
        }
    }
]