{
    "sample_size": {
        "total": 172304959,
        "train": 144108235,
        "valid": 16515570,
        "test": 11681154
    },
    "split_strategy": "date",
    "split_by_date": {
        "train_days": 25,
        "valid_days": 3,
        "test_days": 3,
        "train_range": "20231001 ~ 20231025",
        "valid_range": "20231026 ~ 20231028",
        "test_range": "20231029 ~ 20231031"
    },
    "oov_filter": {
        "min_feat_count": 2,
        "applied_to": [
            "session_id",
            "day_of_week",
            "is_weekend",
            "hour",
            "product_id",
            "price_bucket",
            "c0_id",
            "c1_id",
            "c2_id",
            "brand_id",
            "item_condition_id",
            "size_id",
            "shipper_id",
            "color"
        ],
        "rule": "feature values with count < min_feat_count are mapped to 0"
    },
    "blocked_layout": {
        "train_blocks": 32,
        "valid_blocks": 16,
        "test_blocks": 16,
        "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"
        }
    },
    "event_id_map": {
        "item_view": 0,
        "item_like": 1,
        "item_add_to_cart_tap": 2,
        "offer_make": 3,
        "buy_start": 4,
        "buy_comp": 5
    },
    "event_to_action_name": {
        "item_view": "exposure",
        "item_like": "Like",
        "item_add_to_cart_tap": "Cart",
        "offer_make": "Offer",
        "buy_start": "Checkout",
        "buy_comp": "Purchase"
    },
    "label": [
        "Like",
        "Cart",
        "Offer",
        "Checkout",
        "Purchase"
    ],
    "action_vocab": {
        "Cart": 1,
        "Cart|Checkout": 2,
        "Cart|Checkout|Purchase": 3,
        "Cart|Offer": 4,
        "Cart|Offer|Checkout": 5,
        "Cart|Offer|Checkout|Purchase": 6,
        "Cart|Offer|Purchase": 7,
        "Cart|Purchase": 8,
        "Checkout": 9,
        "Checkout|Purchase": 10,
        "Like": 11,
        "Like|Cart": 12,
        "Like|Cart|Checkout": 13,
        "Like|Cart|Checkout|Purchase": 14,
        "Like|Cart|Offer": 15,
        "Like|Cart|Offer|Checkout": 16,
        "Like|Cart|Offer|Checkout|Purchase": 17,
        "Like|Cart|Offer|Purchase": 18,
        "Like|Cart|Purchase": 19,
        "Like|Checkout": 20,
        "Like|Checkout|Purchase": 21,
        "Like|Offer": 22,
        "Like|Offer|Checkout": 23,
        "Like|Offer|Checkout|Purchase": 24,
        "Like|Offer|Purchase": 25,
        "Like|Purchase": 26,
        "Offer": 27,
        "Offer|Checkout": 28,
        "Offer|Checkout|Purchase": 29,
        "Offer|Purchase": 30,
        "Purchase": 31,
        "exposure": 32
    },
    "action_vocab_desc": "One action token per view sample; each token encodes the multi-label outcomes matched from later events for the same user-item.",
    "vocab_size": {
        "user_index": 1697915,
        "item_index": 43817684,
        "user_id": 1697916,
        "item_id": 43817684,
        "action": 33,
        "timestamp": 0,
        "session_id": 3701837,
        "day_of_week": 8,
        "is_weekend": 3,
        "hour": 25,
        "product_id": 893620,
        "price_bucket": 10,
        "c0_id": 18,
        "c1_id": 310,
        "c2_id": 3042,
        "brand_id": 19783,
        "item_condition_id": 7,
        "size_id": 356,
        "shipper_id": 3,
        "color": 7311
    },
    "feature_groups": {
        "context_features": [
            "session_id",
            "day_of_week",
            "is_weekend",
            "hour"
        ],
        "item_static_features": [
            "product_id",
            "price_bucket",
            "c0_id",
            "c1_id",
            "c2_id",
            "brand_id",
            "item_condition_id",
            "size_id",
            "shipper_id",
            "color"
        ]
    },
    "sample_construction": {
        "anchor": "first item_view per user_id + item_id",
        "labels": "Like/Cart/Offer/Checkout/Purchase events strictly after the anchor view are OR-ed into that view's multi-label target.",
        "non_view_events": "used only to fill labels; not retained as samples or sequence tokens"
    },
    "user_info_schema": {
        "fields": [
            "user_index",
            "full_item_seq",
            "full_action_seq",
            "full_timestamp_seq"
        ]
    },
    "item_info_schema": {
        "fields": [
            "item_index",
            "item_id",
            "product_id",
            "price_bucket",
            "c0_id",
            "c1_id",
            "c2_id",
            "brand_id",
            "item_condition_id",
            "size_id",
            "shipper_id",
            "color"
        ]
    },
    "max_len": {
        "full_item_seq": 26576,
        "full_action_seq": 26576,
        "full_timestamp_seq": 26576
    }
}