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Lechen Zhang

Lechen Zhang has 3 papers in our library, in 2025–2026, most of them on Language models & pretraining, Evaluation & benchmarks, Reasoning; often with Lu Wang, Farima Fatahi Bayat, Sheza Munir.

3 papers in our library · 2025–2026

OpenAlex · ORCID · h-index 7 · 30 works · 869 citations OpenAlex, 2026-10-14

📄 3 works in our library · 🔗 Cited 24 times in our library · ⭐ Paper Stars ranking: #8506

The profile is the library's match of the name; two people with one name are not always told apart.

Elsewhere: Google Scholar · Semantic Scholar · dblp · ACL Anthology

 Affiliations

🎓University of MichiganAnn Arbor · United States2024–2026 · 9 paperscurrent🎓University of HelsinkiHelsinki · Finland2025–2026 · 4 paperscurrent🎓Stockholm UniversityStockholm · Sweden2018–2021 · 9 papersEmployment 2018–2021 · Doctoral Student, Department of Computer and Systems Sciences

From the bylines of their papers (OpenAlex, 2026-10-14), ORCID and Wikidata; institutions on papers are matched by machine. 2 more institutions on single bylines are not listed.

 Fields, topics and concepts

Of its works in our library, with the number of works on each.

📚 Shelves 7The field of science this work belongs to (OpenAlex fields).Arts and Humanities · 3 worksComputer Science · 3 worksArtificial Intelligence · 3 worksLanguage and Linguistics · 3 worksComputer Vision and Pattern Recognition · 2 worksSocial Sciences · 1 workSociology and Political Science · 1 work

🧭 Topics 3Research subjects and languages the work is about.Evaluation & benchmarks · 1 workLanguage models & pretraining · 1 workReasoning · 1 work

 Works by year

2020s

20261 paper20252 papers

 Papers

The most cited first (OpenAlex and our library).

  1. FactBench: A Dynamic Benchmark for In-the-Wild Language Model Factuality Evaluation (2025 · 16 citations)
    Existing long-form factuality benchmarks are fixed snapshots, which exposes them to data contamination. They also cover narrow scenarios, such as biographies or LM-written questions, rather than what real users ask. The authors address this by mining in-the-wild prompts from LMSYS-Chat-1M. They cluster the prompts…
  2. VeriFact: Enhancing Long-Form Factuality Evaluation with Refined Fact Extraction and Reference Facts (2025 · 11 citations)
    Judging whether long LLM answers are factually correct is hard because individual claims often depend on context spread across several sentences.
  3. Logit Arithmetic Elicits Long Reasoning Capabilities Without Training (2026 · 2 citations)
    Large reasoning models acquire long chain-of-thought behaviours, such as backtracking and self-checking, through costly post-training.

 Co-authors here

8 co-authors with a page, the most papers together first.

Venues

Where their works here were published, the most works first, with the editions of those that have a page.

 Cited by

Papers of our library cite their works 24 times (of the 149,439 papers whose bibliographies we read); 9 citing papers with a page here →.

Updated

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