# 优化3: 使用更紧凑的类别映射
class_mapping_cn = dict(
    {
        '0': {
            "name": "汽车",
            "reliability": 0.5
        },
        '1': {
            "name": "卡车",
            "reliability": 0.5
        },
        '2': {
            "name": "公交车",
            "reliability": 0.5
        },
        '3': {
            "name": "商用车",
            "reliability": 0.5
        },
        '4': {
            "name": "大货车",
            "reliability": 0.5
        }
    }
)