Introduction to the Corpus
This paper introduces MATH PILE, a comprehensive and multifaceted corpus designed specifically for the mathematical domain. The corpus contains approximately 9.5 billion tokens collected from a variety of sources, each with a strong mathematical focus. These sources include academic papers from arXiv, textbooks, ProofWiki entries, discussions from StackExchange, and web pages from Common Crawl.
Corpus Characteristics and Quality
To ensure the high quality of MATH PILE, a multi-step data processing regimen was executed. This included language identification to filter out non-English documents and a set of heuristic rules for cleaning and filtering, tailored to the unique aspects of mathematical text. Deduplication processes further refined the corpus by removing duplicative content from within and across sources. Additionally, data contamination detection was performed to eliminate instances found in downstream benchmark test sets, an often overlooked but critical step in corpus construction.
Structural Diversity and Annotations
The documents within MATH PILE are diverse not only in content but also in structure. Content ranges from the definitions and theorem proofs to more narrative styles found in textbook excerpts and website articles. They are enriched with annotations that enhance their utility for AI tasks, providing metadata such as language identification scores and the ratio of symbols to words, which future users can leverage for tailored filtering.
Utility and Future Directions
The creators aspire for MATH PILE to be a valuable asset for advancing AI's capabilities in mathematical reasoning. Envisaged as either a standalone tool or in conjunction with other general domain corpora, MATH PILE is well-positioned to improve AI systems' performance on various mathematically-oriented tasks. Moreover, ongoing updates and expansions to the corpus are planned, fostering continuous improvement and widening applicability.