NTH

NSF-SciFy: Mining the NSF Awards Database for Scientific Claims

AuthorsDelip Rao, Weiqiu You, Eric Wong, Chris Callison-Burch

June 10, 2026 2 min read
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The one-line take

This paper turns millions of NSF award abstracts into a new dataset for extracting scientific claims and research plans, aiming to power better claim verification and science analysis.

Key results

2.8M
full claims

scientific claims in NSF-SciFy

2.6%
claim error rate

manual error rate for fine-tuned claim extraction

2.4%
proposal error rate

manual error rate for fine-tuned investigation proposal extraction

What the paper found

NSF-SciFy introduces a new scientific-claim corpus mined from National Science Foundation award abstracts, using zero-shot prompting with Anthropic’s Claude-3.5-Sonnet to jointly extract factual claims and forward-looking investigation proposals. The full release contains 2.8 million claims from 400,000 NSF abstracts spanning all science and mathematics, with focused subsets NSF-SciFy-MATSCI at 114,000 claims from 16,042 materials-science awards and NSF-SciFy-20K at 135,000 claims from 20,001 awards across five NSF directorates. The paper shows that grant abstracts are stylistically distinct from their non-technical versions, and that the extracted content is high quality: manual evaluation found claim-extraction error at 2.6% and proposal-extraction error at 2.4%, while Claude-extracted claims had a slightly lower 2.1% error rate. To test utility, the authors fine-tune Mistral-7B-instruct-v0.3 and Qwen2.5-7B-Instruct with LoRA for three tasks: technical-to-non-technical abstract generation, claim extraction, and proposal extraction. Generation improves only modestly, with Mistral reaching BERTScore-F1 0.8561, but extraction tasks improve dramatically: Mistral reaches precision 0.7450, recall 0.7098, and F1 0.7097 for claims, and precision 0.7351, recall 0.7539, and F1 0.7261 for investigation proposals, with relative gains often exceeding 100%. The work positions NSF award abstracts as a novel source for large-scale scientific claim verification, discovery tracking, and meta-scientific analysis, and releases the datasets and models openly under Apache 2.0.

Original abstract

We introduce NSF-SciFy, a comprehensive dataset of scientific claims and investigation proposals extracted from National Science Foundation award abstracts. While previous scientific claim verification datasets have been limited in size and scope, NSF-SciFy represents a significant advance with 2.8 million claims from 400,000 abstracts spanning all science and mathematics disciplines. We present two focused subsets: NSF-SciFy-MatSci with 114,000 claims from materials science awards, and NSF-SciFy-20K with 135,000 claims across five NSF directorates. Using zero-shot prompting, we develop a scalable approach for joint extraction of scientific claims and investigation proposals. We demonstrate the dataset's utility through three downstream tasks: non-technical abstract generation, claim extraction, and investigation proposal extraction. Fine-tuning language models on our dataset yields substantial improvements, with relative gains often exceeding 100%, particularly for claim and proposal extraction tasks. Our error analysis reveals that extracted claims exhibit high precision but lower recall, suggesting opportunities for further methodological refinement. NSF-SciFy enables new research directions in large-scale claim verification, scientific discovery tracking, and meta-scientific analysis. Code and data are available at https://github.com/darpa-scify/NSFSciFy.

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