[
    {
        "size": 3,
        "inequality_prob": 0.2,
        "retain_ratio": 0.3
    },
    {
        "size": 4,
        "inequality_prob": 0.3,
        "retain_ratio": 0.4
    },
    {
        "size": 6,
        "inequality_prob": 0.5,
        "retain_ratio": 0.6
    }
]