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researcher

H. Lightman

3 papers hereh-index 34.2k citations9 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • middle author1

Across the 1 of 3 papers where every author was matched, so the position is known.

fields
  • cs.CL2
  • cs.LG1

identity via Semantic Scholar / OpenAlex

most citedOpenAI GPT-5 System Card

17 citations · 17 across the 2 of their papers we have counts for

collaborators

3 papers

cs.CL2026

CoLD: Counterfactually-Guided Length Debiasing for Process Reward Models in Mathematical Reasoning

Congmin Zheng, Jiachen Zhu, Jianghao Lin +6

Process Reward Models (PRMs) play a central role in evaluating and guiding multi-step reasoning in large language models (LLMs), especially for mathematical problem solving. Howeve…

cs.CL2026★ 17 cited

OpenAI GPT-5 System Card

Aaditya Singh, Adam Fry, Adam Perelman +483

This is the system card published alongside the OpenAI GPT-5 launch, August 2025. GPT-5 is a unified system with a smart and fast model that answers most questions, a deeper reason…

cs.LG2025

Competitive Programming with Large Reasoning Models

OpenAI, :, Ahmed El-Kishky +23

We show that reinforcement learning applied to large language models (LLMs) significantly boosts performance on complex coding and reasoning tasks. Additionally, we compare two gen…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.