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68 lines
2.0 KiB
Python
68 lines
2.0 KiB
Python
"""
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推荐系统配置
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"""
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import os
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from app.core.config import settings
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# Milvus 集合名称
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MILVUS_COLLECTION_SKETCH_VECTORS = "sketch_vectors_norm"
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# Redis key 前缀
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REDIS_KEY_USER_PREF_PREFIX = "user_pref"
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# 推荐系统配置参数
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RECOMMENDATION_CONFIG = {
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# 时间衰减半衰期(用于计算时间衰减权重)
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# 值越小,最近的行为权重越大
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"K_half": 20,
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# 探索与利用的比例 (0.0-1.0)
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# - 值越大,使用探索分支(随机推荐)的几率越大,结果更随机
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# - 值越小,使用利用分支(基于用户偏好)的几率越大,结果更精准
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# - 建议范围: 0.3-0.7,要增加随机性可提高到 0.6-0.8
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"explore_ratio": 0.5,
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# 向量检索返回的候选数量
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# 值越大,候选池越大,但计算成本也越高
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# 建议范围: 100-1000
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"topk": 1000,
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# Style 加分系数(同 style 的候选进行加分)
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# 值越大,匹配 style 的候选被选中的概率越大
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# 要降低某个结果的重复率,可以降低此值(如 0.1 或 0.05)
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"style_bonus": 0.2,
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# Softmax 抽样的温度参数
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# - 温度越高(>1.0),概率分布越均匀,结果更随机,重复率更低
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# - 温度越低(<1.0),高分项概率越大,结果更集中,重复率更高
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# - 温度=1.0 为标准 Softmax
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# - 建议范围: 1.0-3.0,要增加随机性可提高到 2.0-3.0
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"softmax_temperature": 0.07,
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# 监听间隔(秒)
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"listen_interval_sec": 30,
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# 批量处理大小
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"batch_size": 1000,
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# Redis 过期时间(秒,30天)
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"redis_expire_seconds": 2592000,
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# 向量维度
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"vector_dim": 2048,
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}
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# 数据库表名
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TABLE_USER_PREFERENCE_LOG = "user_preference_log_test"
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TABLE_SYS_FILE = "t_sys_file"
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# MySQL 连接配置(用于推荐系统)
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MYSQL_CONFIG = {
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"host": settings.MYSQL_HOST,
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"port": settings.MYSQL_PORT,
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"user": settings.MYSQL_USER,
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"password": settings.MYSQL_PASSWORD,
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"database": settings.MYSQL_DB,
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"charset": "utf8mb4"
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}
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