--- title: "Mark Ibrahim — author profile and papers — Elamur Research" description: "Mark Ibrahim: 2 papers on Elamur Research (2023–2025), h-index 9 — affiliations, topics, co-authors and who cites them in our library." canonical: "https://research.elamur.ai/free/en/authors/mark-ibrahim/" --- [Elamur Research](https://md.research.elamur.ai/free/en/) · [this page in HTML](https://research.elamur.ai/free/en/authors/mark-ibrahim/) [home](https://md.research.elamur.ai/free/en/) / [authors](https://md.research.elamur.ai/free/en/authors/) / Mark Ibrahim # Mark Ibrahim Mark Ibrahim has 2 papers in our library, in 2023–2025, most of them on [Language models & pretraining](https://md.research.elamur.ai/free/en/topics/language-models/), [Reasoning](https://md.research.elamur.ai/free/en/topics/reasoning/), [Evaluation & benchmarks](https://md.research.elamur.ai/free/en/topics/evaluation-benchmarks/); often with [Dieuwke Hupkes](https://md.research.elamur.ai/free/en/authors/dieuwke-hupkes/), [Emmanuel Dupoux](https://md.research.elamur.ai/free/en/authors/emmanuel-dupoux/), [Gregoire Mialon](https://md.research.elamur.ai/free/en/authors/gregoire-mialon/). 2 papers in our library · 2023–2025 [OpenAlex](https://openalex.org/A5030917007) · [ORCID](https://orcid.org/0009-0005-2135-7476) · [**h-index 9**](https://openalex.org/authors/A5030917007) · [37 works](https://openalex.org/works?filter=author.id:A5030917007) · [446 citations](https://openalex.org/works?filter=author.id:A5030917007&sort=cited_by_count:desc) OpenAlex, 2026-10-14 [📄 2 works in our library](https://md.research.elamur.ai/free/en/authors/mark-ibrahim/#papers) · [🔗 Cited 47 times in our library](https://md.research.elamur.ai/free/en/authors/mark-ibrahim/cited-by/) · [1 more in our library without a page yet](#also) · [⭐ Paper Stars ranking: #9705](https://md.research.elamur.ai/free/en/paper-stars/page/98/#star-9705) The profile is the library's match of the name; two people with one name are not always told apart. Elsewhere: [Google Scholar](https://scholar.google.com/citations?view_op=search_authors&mauthors=Mark+Ibrahim) · [Semantic Scholar](https://www.semanticscholar.org/search?q=Mark+Ibrahim) · [dblp](https://dblp.org/search?q=Mark+Ibrahim) · [ACL Anthology](https://aclanthology.org/search/?q=Mark+Ibrahim) ## Affiliations [🏢**Meta** Menlo Park · United States 2021–2023 · 8 papers](https://md.research.elamur.ai/free/en/companies/meta/) · [🏢**Meta** London · United Kingdom 2021 · 4 papers](https://md.research.elamur.ai/free/en/companies/meta-united-kingdom/) · [🏢**Capital One** Tysons Corner · United States 2018–2020 · 4 papers](https://md.research.elamur.ai/free/en/companies/capital-one/) 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 5 The field of science this work belongs to (OpenAlex fields).[Arts and Humanities · 2 works](https://md.research.elamur.ai/free/en/shelves/arts-and-humanities/) · [Computer Science · 2 works](https://md.research.elamur.ai/free/en/shelves/computer-science/) · [Artificial Intelligence · 2 works](https://md.research.elamur.ai/free/en/shelves/computer-science/artificial-intelligence/) · [Computer Vision and Pattern Recognition · 2 works](https://md.research.elamur.ai/free/en/shelves/computer-science/computer-vision-and-pattern-recognition/) · [Language and Linguistics · 2 works](https://md.research.elamur.ai/free/en/shelves/arts-and-humanities/language-and-linguistics/) 🧭 Topics 3 Research subjects and languages the work is about.[Language models & pretraining · 2 works](https://md.research.elamur.ai/free/en/topics/language-models/) · [Reasoning · 2 works](https://md.research.elamur.ai/free/en/topics/reasoning/) · [Evaluation & benchmarks · 1 work](https://md.research.elamur.ai/free/en/topics/evaluation-benchmarks/) ## Works by year ### 2020s [**2025** 1 paper](https://md.research.elamur.ai/free/en/authors/mark-ibrahim/year/2025/) · [**2023** 1 paper](https://md.research.elamur.ai/free/en/authors/mark-ibrahim/year/2023/) ## Papers The most cited first (OpenAlex and our library). 1. **[AbstentionBench: Reasoning LLMs Fail on Unanswerable Questions](https://md.research.elamur.ai/free/en/papers/kirichenko-2025-abstentionbench-reasoning-llms-fail-unanswerable/)** *(2025 · 35 citations)* Large language models often receive questions that have no reliable answer. A request may omit key details, rest on a false assumption, depend on opinion, or concern facts that are outdated or unknown. The authors argue that declining or hedging in these cases matters as much as accuracy, but no broad evaluation of… 2. **[WorldSense: A Synthetic Benchmark for Grounded Reasoning in Large Language Models](https://md.research.elamur.ai/free/en/papers/benchekroun-2023-worldsense-synthetic-benchmark-grounded-reasoning/)** *(2023 · 15 citations)* LLMs often seem to understand the physical world, but it is hard to tell whether they build coherent internal scene representations. ## All works 3 works of theirs in our library, the most cited first; 2 with a page here, the others link their original until we summarise them. 1. **[AbstentionBench: Reasoning LLMs Fail on Unanswerable Questions](https://md.research.elamur.ai/free/en/papers/kirichenko-2025-abstentionbench-reasoning-llms-fail-unanswerable/) [Conference on Neural Information Processing Systems (NeurIPS)](https://md.research.elamur.ai/free/en/venues/neural-information-processing-systems/)**Polina Kirichenko, Mark Ibrahim, Kamalika Chaudhuri, et al.*2025 · 35 citations* 2. [**WorldSense: A Synthetic Benchmark for Grounded Reasoning in Large Language Models arXiv:2311.15930**Youssef Benchekroun, Megi Dervishi, Mark Ibrahim, et al.*2023 · 15 citations*](https://md.research.elamur.ai/free/en/papers/benchekroun-2023-worldsense-synthetic-benchmark-grounded-reasoning/) 3. **[X-Sample Contrastive Loss: Improving Contrastive Learning with Sample Similarity Graphs ↗](https://arxiv.org/abs/2407.18134) arXiv (Cornell University) · no summary yet**Vlad Sobal et al.*2024* ## Co-authors here 8 co-authors with a page, the most papers together first. - [Dieuwke Hupkes](https://md.research.elamur.ai/free/en/authors/dieuwke-hupkes/) - [Emmanuel Dupoux](https://md.research.elamur.ai/free/en/authors/emmanuel-dupoux/) - [Gregoire Mialon](https://md.research.elamur.ai/free/en/authors/gregoire-mialon/) - [Jean-Baptiste Gaya](https://md.research.elamur.ai/free/en/authors/jean-baptiste-gaya/) - [Pascal Vincent](https://md.research.elamur.ai/free/en/authors/pascal-vincent/) - [Thomas Scialom](https://md.research.elamur.ai/free/en/authors/thomas-scialom/) - [Xavier Martinet](https://md.research.elamur.ai/free/en/authors/xavier-martinet/) - [Youssef Benchekroun](https://md.research.elamur.ai/free/en/authors/youssef-benchekroun/) ## Venues Where their works here were published, the most works first, with the editions of those that have a page. - [Conference on Neural Information Processing Systems (NeurIPS)](https://md.research.elamur.ai/free/en/venues/neural-information-processing-systems/): [NeurIPS 2025](https://md.research.elamur.ai/free/en/venues/neural-information-processing-systems/2025/) ## Cited by Papers of our library cite their works 47 times (of the 149,439 papers whose bibliographies we read); [15 citing papers with a page here →](https://md.research.elamur.ai/free/en/authors/mark-ibrahim/cited-by/). Updated 3 November 2026