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Source2Synth: Synthetic Data Generation and Curation Grounded in Real Data Sources

12 September 2024
A. Lupidi
Carlos Gemmell
Nicola Cancedda
Jane Dwivedi-Yu
Jason Weston
Jakob Foerster
Roberta Raileanu
Maria Lomeli
    SyDa
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Abstract

Large Language Models still struggle in challenging scenarios that leverage structured data, complex reasoning, or tool usage. In this paper, we propose Source2Synth: a new method that can be used for teaching LLMs new skills without relying on costly human annotations. Source2Synth takes as input a custom data source and produces synthetic data points with intermediate reasoning steps grounded in real-world sources. Source2Synth improves the dataset quality by discarding low-quality generations based on their answerability. We demonstrate the generality of this approach by applying it to two challenging domains: we test reasoning abilities in multi-hop question answering (MHQA), and tool usage in tabular question answering (TQA). Our method improves performance by 25.51% for TQA on WikiSQL and 22.57% for MHQA on HotPotQA compared to the fine-tuned baselines.

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