{
    "sample_size": {
        "total": 323464444,
        "train": 256110233,
        "valid": 34334869,
        "test": 33019342
    },
    "split_by_date": {
        "train_days": 26,
        "train_range": "2022-04-07 ~ 2022-05-02",
        "valid_days": 3,
        "valid_range": "2022-05-03 ~ 2022-05-05",
        "test_days": 3,
        "test_range": "2022-05-06 ~ 2022-05-08"
    },
    "oov_filter": {
        "min_feat_count": 2,
        "applied_to": "USER_STATIC_FEATURES (基于日志中用户出现次数统计)",
        "rule": "特征值出现次数 < min_feat_count 的统一映射为 0 (unknown/padding)"
    },
    "blocked_layout": {
        "n_user_parts": 32,
        "num_workers": 4,
        "train_blocks": 32,
        "valid_blocks": 8,
        "test_blocks": 8,
        "train": {
            "data_dir": "train/data",
            "user_info_dir": "train/user_info",
            "item_info_dir": "train/item_info"
        },
        "valid": {
            "data_dir": "valid/data",
            "user_info_dir": "valid/user_info",
            "item_info_dir": "valid/item_info"
        },
        "test": {
            "data_dir": "test/data",
            "user_info_dir": "test/user_info",
            "item_info_dir": "test/item_info"
        },
        "block_pair_rule": "同一 split 下, data/user_info/item_info 使用相同的 part-xxxxx 编号配对读取。",
        "local_index_rule": {
            "user_index": "block-local dense index, starts from 0",
            "item_index": "block-local dense index, 0 reserved for padding",
            "user_id": "global feature id, consistent across blocks",
            "item_id": "global feature id, consistent across blocks"
        }
    },
    "vocab_size": {
        "user_index": 27285,
        "item_index": 32038726,
        "user_id": 27286,
        "item_id": 32038726,
        "action": 65,
        "timestamp": 0,
        "user_active_degree": 11,
        "is_lowactive_period": 3,
        "is_live_streamer": 4,
        "is_video_author": 4,
        "follow_user_num_range": 10,
        "fans_user_num_range": 11,
        "friend_user_num_range": 9,
        "register_days_range": 10,
        "onehot_feat0": 4,
        "onehot_feat1": 9,
        "onehot_feat2": 52,
        "onehot_feat3": 1473,
        "onehot_feat4": 18,
        "onehot_feat5": 36,
        "onehot_feat6": 5,
        "onehot_feat7": 120,
        "onehot_feat8": 456,
        "onehot_feat9": 9,
        "onehot_feat10": 7,
        "onehot_feat11": 7,
        "onehot_feat12": 5,
        "onehot_feat13": 5,
        "onehot_feat14": 5,
        "onehot_feat15": 5,
        "onehot_feat16": 5,
        "onehot_feat17": 5,
        "tab": 16,
        "day_of_week": 8,
        "is_weekend": 3,
        "hour": 25,
        "video_type": 4,
        "primary_tag": 60,
        "music_type": 8,
        "duration_bucket": 8
    },
    "label": [
        "is_click",
        "is_like",
        "is_follow",
        "is_comment",
        "is_forward",
        "long_view"
    ],
    "action_vocab": {
        "exposure": 1,
        "is_click": 2,
        "is_click|is_comment": 3,
        "is_click|is_comment|is_forward": 4,
        "is_click|is_comment|is_forward|long_view": 5,
        "is_click|is_comment|long_view": 6,
        "is_click|is_follow": 7,
        "is_click|is_follow|is_comment": 8,
        "is_click|is_follow|is_comment|is_forward": 9,
        "is_click|is_follow|is_comment|is_forward|long_view": 10,
        "is_click|is_follow|is_comment|long_view": 11,
        "is_click|is_follow|is_forward": 12,
        "is_click|is_follow|is_forward|long_view": 13,
        "is_click|is_follow|long_view": 14,
        "is_click|is_forward": 15,
        "is_click|is_forward|long_view": 16,
        "is_click|is_like": 17,
        "is_click|is_like|is_comment": 18,
        "is_click|is_like|is_comment|is_forward": 19,
        "is_click|is_like|is_comment|is_forward|long_view": 20,
        "is_click|is_like|is_comment|long_view": 21,
        "is_click|is_like|is_follow": 22,
        "is_click|is_like|is_follow|is_comment": 23,
        "is_click|is_like|is_follow|is_comment|is_forward": 24,
        "is_click|is_like|is_follow|is_comment|is_forward|long_view": 25,
        "is_click|is_like|is_follow|is_comment|long_view": 26,
        "is_click|is_like|is_follow|is_forward": 27,
        "is_click|is_like|is_follow|is_forward|long_view": 28,
        "is_click|is_like|is_follow|long_view": 29,
        "is_click|is_like|is_forward": 30,
        "is_click|is_like|is_forward|long_view": 31,
        "is_click|is_like|long_view": 32,
        "is_click|long_view": 33,
        "is_comment": 34,
        "is_comment|is_forward": 35,
        "is_comment|is_forward|long_view": 36,
        "is_comment|long_view": 37,
        "is_follow": 38,
        "is_follow|is_comment": 39,
        "is_follow|is_comment|is_forward": 40,
        "is_follow|is_comment|is_forward|long_view": 41,
        "is_follow|is_comment|long_view": 42,
        "is_follow|is_forward": 43,
        "is_follow|is_forward|long_view": 44,
        "is_follow|long_view": 45,
        "is_forward": 46,
        "is_forward|long_view": 47,
        "is_like": 48,
        "is_like|is_comment": 49,
        "is_like|is_comment|is_forward": 50,
        "is_like|is_comment|is_forward|long_view": 51,
        "is_like|is_comment|long_view": 52,
        "is_like|is_follow": 53,
        "is_like|is_follow|is_comment": 54,
        "is_like|is_follow|is_comment|is_forward": 55,
        "is_like|is_follow|is_comment|is_forward|long_view": 56,
        "is_like|is_follow|is_comment|long_view": 57,
        "is_like|is_follow|is_forward": 58,
        "is_like|is_follow|is_forward|long_view": 59,
        "is_like|is_follow|long_view": 60,
        "is_like|is_forward": 61,
        "is_like|is_forward|long_view": 62,
        "is_like|long_view": 63,
        "long_view": 64
    },
    "action_vocab_desc": "编码后的 action 词表，用于 dataloader 基于 full_action_seq 构造 task-specific token masks。",
    "user_info_schema": {
        "fields": [
            "user_index",
            "full_item_seq",
            "full_action_seq",
            "full_timestamp_seq"
        ],
        "full_timestamp_seq_desc": "按时间顺序排列的原始 time_ms 序列",
        "desc": "这里的 user_index / full_item_seq 中的 item index 都是 block-local index；full_action_seq / full_timestamp_seq 为全局时间顺序序列。"
    },
    "item_info_schema": {
        "fields": [
            "item_index",
            "item_id",
            "video_type",
            "primary_tag",
            "music_type",
            "duration_bucket"
        ],
        "desc": "item_index 为 block-local index；item_id 为全局 item feature id，用于 embedding 一致性。"
    },
    "max_len": {
        "full_item_seq": 228030,
        "full_action_seq": 228030,
        "full_timestamp_seq": 228030
    }
}