illuin-conteb/mldr-conteb-eval

ConTEB - MLDR (evaluation)

This dataset is part of ConTEB (Context-aware Text Embedding Benchmark), designed for evaluating contextual embedding model capabilities. It stems from the widely used MLDR dataset.

Dataset Summary

MLDR consists of long documents, associated to existing sets of question-answer pairs. To build the corpus, we start from the pre-existing collection documents, extract the text, and chunk them (using LangChain's RecursiveCharacterSplitter with a threshold of 1000 characters). Since chunking is done a posteriori without considering the questions, chunks are not always self-contained and eliciting document-wide context can help build meaningful representations. We use GPT-4o to annotate which chunk, among the gold document, best contains information needed to answer the query.

This dataset provides a focused benchmark for contextualized embeddings. It includes a set of original documents, chunks stemming from them, and queries.

• Number of Documents: 100
• Number of Chunks: 1536
• Number of Queries: 100
• Average Number of Tokens per Chunk: 164.2

Dataset Structure (Hugging Face Datasets)

The dataset is structured into the following columns:

• documents: Contains chunk information:
  • "chunk_id": The ID of the chunk, of the form doc-id_chunk-id, where doc-id is the ID of the original document and chunk-id is the position of the chunk within that document.
  • "chunk": The text of the chunk
• queries: Contains query information:
  • "query": The text of the query.
  • "answer": The answer relevant to the query, from the original dataset.
  • "chunk_id": The ID of the chunk that the query is related to, of the form doc-id_chunk-id, where doc-id is the ID of the original document and chunk-id is the position of the chunk within that document.

Usage

Use the test split for evaluation. We will upload a Quickstart evaluation snippet soon.

Citation

We will add the corresponding citation soon.

Acknowledgments

This work is partially supported by ILLUIN Technology, and by a grant from ANRT France.

Copyright

All rights are reserved to the original authors of the documents.