philipphager/baidu-ultr_baidu-mlm-ctr

Baidu ULTR Dataset - Baidu BERT-12l-12h

Query-document vectors and clicks for a subset of the Baidu Unbiased Learning to Rank dataset. This dataset uses the BERT cross-encoder with 12 layers from Baidu released in the official starter-kit to compute query-document vectors (768 dims).

Setup

1. Install huggingface datasets
2. Install pandas and pyarrow: pip install pandas pyarrow
3. Optionally, you might need to install a pyarrow-hotfix if you cannot install pyarrow >= 14.0.1
4. You can now use the dataset as described below.

Load train / test click dataset:

from datasets import load_dataset

dataset = load_dataset(
    "philipphager/baidu-ultr_baidu-mlm-ctr",
    name="clicks",
    split="train", # ["train", "test"]
    cache_dir="~/.cache/huggingface",
)

dataset.set_format("torch") #  [None, "numpy", "torch", "tensorflow", "pandas", "arrow"]

Load expert annotations:

from datasets import load_dataset

dataset = load_dataset(
    "philipphager/baidu-ultr_baidu-mlm-ctr",
    name="annotations",
    split="test",
    cache_dir="~/.cache/huggingface",
)

dataset.set_format("torch") #  [None, "numpy", "torch", "tensorflow", "pandas", "arrow"]

Available features

Each row of the click / annotation dataset contains the following attributes. Use a custom collate_fn to select specific features (see below):

Click dataset

name	dtype	description
query_id	string	Baidu query_id
query_md5	string	MD5 hash of query text
query	List[int32]	List of query tokens
query_length	int32	Number of query tokens
n	int32	Number of documents for current query, useful for padding
url_md5	List[string]	MD5 hash of document URL, most reliable document identifier
text_md5	List[string]	MD5 hash of document title and abstract
title	List[List[int32]]	List of tokens for document titles
abstract	List[List[int32]]	List of tokens for document abstracts
query_document_embedding	Tensor[Tensor[float16]]	BERT CLS token
click	Tensor[int32]	Click / no click on a document
position	Tensor[int32]	Position in ranking (does not always match original item position)
media_type	Tensor[int32]	Document type (label encoding recommended as IDs do not occupy a continuous integer range)
displayed_time	Tensor[float32]	Seconds a document was displayed on the screen
serp_height	Tensor[int32]	Pixel height of a document on the screen
slipoff_count_after_click	Tensor[int32]	Number of times a document was scrolled off the screen after previously clicking on it
bm25	Tensor[float32]	BM25 score for documents
bm25_title	Tensor[float32]	BM25 score for document titles
bm25_abstract	Tensor[float32]	BM25 score for document abstracts
tf_idf	Tensor[float32]	TF-IDF score for documents
tf	Tensor[float32]	Term frequency for documents
idf	Tensor[float32]	Inverse document frequency for documents
ql_jelinek_mercer_short	Tensor[float32]	Query likelihood score for documents using Jelinek-Mercer smoothing (alpha = 0.1)
ql_jelinek_mercer_long	Tensor[float32]	Query likelihood score for documents using Jelinek-Mercer smoothing (alpha = 0.7)
ql_dirichlet	Tensor[float32]	Query likelihood score for documents using Dirichlet smoothing (lambda = 128)
document_length	Tensor[int32]	Length of documents
title_length	Tensor[int32]	Length of document titles
abstract_length	Tensor[int32]	Length of document abstracts

Expert annotation dataset

name	dtype	description
query_id	string	Baidu query_id
query_md5	string	MD5 hash of query text
query	List[int32]	List of query tokens
query_length	int32	Number of query tokens
frequency_bucket	int32	Monthly frequency of query (bucket) from 0 (high frequency) to 9 (low frequency)
n	int32	Number of documents for current query, useful for padding
url_md5	List[string]	MD5 hash of document URL, most reliable document identifier
text_md5	List[string]	MD5 hash of document title and abstract
title	List[List[int32]]	List of tokens for document titles
abstract	List[List[int32]]	List of tokens for document abstracts
query_document_embedding	Tensor[Tensor[float16]]	BERT CLS token
label	Tensor[int32]	Relevance judgments on a scale from 0 (bad) to 4 (excellent)
bm25	Tensor[float32]	BM25 score for documents
bm25_title	Tensor[float32]	BM25 score for document titles
bm25_abstract	Tensor[float32]	BM25 score for document abstracts
tf_idf	Tensor[float32]	TF-IDF score for documents
tf	Tensor[float32]	Term frequency for documents
idf	Tensor[float32]	Inverse document frequency for documents
ql_jelinek_mercer_short	Tensor[float32]	Query likelihood score for documents using Jelinek-Mercer smoothing (alpha = 0.1)
ql_jelinek_mercer_long	Tensor[float32]	Query likelihood score for documents using Jelinek-Mercer smoothing (alpha = 0.7)
ql_dirichlet	Tensor[float32]	Query likelihood score for documents using Dirichlet smoothing (lambda = 128)
document_length	Tensor[int32]	Length of documents
title_length	Tensor[int32]	Length of document titles
abstract_length	Tensor[int32]	Length of document abstracts

Example PyTorch collate function

Each sample in the dataset is a single query with multiple documents. The following example demonstrates how to create a batch containing multiple queries with varying numbers of documents by applying padding:

import torch
from typing import List
from collections import defaultdict
from torch.nn.utils.rnn import pad_sequence
from torch.utils.data import DataLoader


def collate_clicks(samples: List):
    batch = defaultdict(lambda: [])

    for sample in samples:
        batch["query_document_embedding"].append(sample["query_document_embedding"])
        batch["position"].append(sample["position"])
        batch["click"].append(sample["click"])
        batch["n"].append(sample["n"])

    return {
        "query_document_embedding": pad_sequence(
            batch["query_document_embedding"], batch_first=True
        ),
        "position": pad_sequence(batch["position"], batch_first=True),
        "click": pad_sequence(batch["click"], batch_first=True),
        "n": torch.tensor(batch["n"]),
    }

loader = DataLoader(dataset, collate_fn=collate_clicks, batch_size=16)