Dataset: KuaiRec
Processing:
Split the dataset (consisting of normal set and intervened set) as follows:
- training set (100% normal and 25% intervened)
- validation set (25% intervened)
- test set (50% intervened)
Filtering:
- Remove users and items with less than 1 interactions
Evaluation: Ratio-based Splitting, full sort
Metrics: Recall@10, MRR@10, NGCG@10, Hit@10, Precision@10
Properties:
# Atomic File Format
field_separator: "\t"
seq_separator: " "
# Common Features
USER_ID_FIELD: user_id
ITEM_ID_FIELD: item_id
RATING_FIELD: watch_ratio
TIME_FIELD: timestamp
seq_len: ~
# Label for Point-wise DataLoader
LABEL_FIELD: label
# NegSample Prefix for Pair-wise DataLoader
NEG_PREFIX: neg_
# Sequential Model Needed
ITEM_LIST_LENGTH_FIELD: item_length
LIST_SUFFIX: _list
MAX_ITEM_LIST_LENGTH: 50
POSITION_FIELD: position_id
# Knowledge-based Model Needed
HEAD_ENTITY_ID_FIELD: head_id
TAIL_ENTITY_ID_FIELD: tail_id
RELATION_ID_FIELD: relation_id
ENTITY_ID_FIELD: entity_id
# Selectively Loading
load_col:
inter: [user_id, item_id, timestamp, watch_ratio, intervene_mask]
unload_col: ~
unused_col: ~
# Filtering
rm_dup_inter: ~
val_interval: ~
filter_inter_by_user_or_item: True
user_inter_num_interval: '[1,inf)'
item_inter_num_interval: '[1,inf)'
# Benchmark file
benchmark_filename: ['train','valid','test']
# special
INTERVENE_MASK: intervene_mask| Dataset | #Users | #Items | #Interactions | Sparsity |
|---|---|---|---|---|
| KuaiRec | 7,176 | 10,612 | 1,153,787 | 98.49% |
We tune the hyper-parameters of the implemented models and present the range for reference.
For fairness, we tune the common hyper-parameters of methods as following.
learning_rate in [0.01, 0.005, 0.001, 0.0001]
embedding_size in [16, 32, 64]
train_batch_size in [256, 512, 1024, 2048]
| Best hyper-parameters | Tuning range | |
|---|---|---|
| MF | learning_rate=0.0001 embedding_size=32 train_batch_size=2048 |
- |
| MF-IPS (User) | learning_rate=0.0001 embedding_size=32 train_batch_size=2048 eta=0.5 |
eta in [0.1, 0.2, ..., 1] |
| MF-IPS (Item) | learning_rate=0.0001 embedding_size=32 train_batch_size=512 eta=0.9 |
eta in [0.1, 0.2, ..., 1] |
| MF-IPS (NB) | - | - |
| PDA | learning_rate=0.0001 embedding_size=32 train_batch_size=2048 reg_weight=0.004 eta=0.8 |
reg_weight in [0.005, 0.004, 0.003, 0.002, 0.001] |
| MACR | learning_rate=0.001 embedding_size=16 train_batch_size=1024 item_loss_weight=0.001 user_loss_weight=0.001 mlp_hidden_size=[32, 1] dropout_prob=0 c=0.1 |
item_loss_weight in [0.001, 0.005, 0.01, 0.05, 0.1] user_loss_weight in [0.001, 0.005, 0.01, 0.05, 0.1] mlp_hidden_size in [[32, 1], [32, 16, 1]] dropout_prob in [0.1, 0] c in [5, 1, 0.1, 0] |
| DICE | learning_rate=0.0001 embedding_size=16 train_batch_size=512 dis_pen=0.001 int_weight=0.5 pop_weight=0.01 |
dis_pen in [0.1, 0.01, 0.001] int_weight in [0.1, 0.5, 0.01, 0.05, 0.0001] pop_weight in [0.1, 0.5, 0.01, 0.05, 0.0001] |
| CausE | learning_rate=0.0001 embedding_size=32 train_batch_size=512 dis_pen=0.05 |
dis_pen in [0.1, 0.01, 0.005, 0.001] |
| Rel-MF | learning_rate=0.001 embedding_size=64 train_batch_size=2048 reg_weight=0.001 |
reg_weight in [0.1, 0.01, 0.001] |