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Fiorillo v0.5 open model released for randomized trial analysis

A new open-source model named Fiorillo v0.5 has been released, designed to answer questions about randomized trials with probabilistic outputs. This model, based on Qwen3-4B-Base with added adapters and a decision head, was fine-tuned on articles with licenses permitting reuse. Fiorillo v0.5 achieved strong performance on the Evidence Inference 2.0 benchmark, meeting pre-registered criteria for accuracy and calibration, and outperforming Gemma 4 31B-it on log loss. AI

IMPACT This release provides a specialized open-source tool for analyzing randomized trials, potentially improving research reproducibility and data extraction.

RANK_REASON The item describes a research paper detailing a new open-source model and its performance on a specific benchmark. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.CL →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Fiorillo v0.5 open model released for randomized trial analysis

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The item describes a research paper detailing a new open-source model and its performance on a specific benchmark. [lever_c_demoted from research: ic=1 ai=1.0]
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COVERAGE [1]

  1. arXiv cs.CL TIER_1 English(EN) · Johann Emmanuel Li ·

    Calibrated Answers About Randomized Trials From a 4-Billion-Parameter Open Model: A Registered Test and a License-Clean Release

    arXiv:2610.07019v1 Announce Type: new Abstract: Fiorillo v0.5 is an open model that answers typed questions with a probability for each answer. Its main specialist reads a randomized trial's article, cut to 6,144 tokens, and answers whether an intervention significantly increased…