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Amir Hossein Kargaran

10 accepted papers

2025

CoBia: Constructed Conversations Can Trigger Otherwise Concealed Societal Biases in LLMs

EMNLP 2025

Improvements in model construction, including fortified safety guardrails, allow Large language models (LLMs) to increasingly pass standard safety checks. However, LLMs sometimes slip into revealing harmful behavior, such as expressing racist viewpoints, during conversations. To analyze this systema

2025

How Programming Concepts and Neurons Are Shared in Code Language Models

ACL 2025finding

Several studies have explored the mechanisms of large language models (LLMs) in coding tasks, but most have focused on programming languages (PLs) in a monolingual setting. In this paper, we investigate the relationship between multiple PLs and English in the concept space of LLMs. We perform a few-…

2025

How Transliterations Improve Crosslingual Alignment

COLING 2025main

Recent studies have shown that post-aligning multilingual pretrained language models (mPLMs) using alignment objectives on both original and transliterated data can improve crosslingual alignment. This improvement further leads to better crosslingual transfer performance. However, it remains unclear…

2025

MEXA: Multilingual Evaluation of English-Centric LLMs via Cross-Lingual Alignment

ACL 2025finding

English-centric large language models (LLMs) often show strong multilingual capabilities. However, their multilingual performance remains unclear and is under-evaluated for many other languages. Most benchmarks for multilinguality focus on classic NLP tasks or cover a minimal number of languages. We…

2025

On Relation-Specific Neurons in Large Language Models

EMNLP 2025

In large language models (LLMs), certain neurons can store distinct pieces of knowledge learned during pretraining. While factual knowledge typically appears as a combination of relations and entities, it remains unclear whether some neurons focus on a relation itself – independent of any entity. We

2024

GlotCC: An Open Broad-Coverage CommonCrawl Corpus and Pipeline for Minority Languages

NeurIPS 2024poster

The need for large text corpora has increased with the advent of pretrained language models and, in particular, the discovery of scaling laws for these models. Most available corpora have sufficient data only for languages with large dominant communities. However, there is no corpus available that (…

2024

GlotScript: A Resource and Tool for Low Resource Writing System Identification

COLING 2024main

We present GlotScript, an open resource and tool for low resource writing system identification. GlotScript-R is a resource that provides the attested writing systems for more than 7,000 languages. It is compiled by aggregating information from existing writing system resources. GlotScript-T is a wr…

2024

MaskLID: Code-Switching Language Identification through Iterative Masking

ACL 2024short

We present MaskLID, a simple, yet effective, code-switching (CS) language identification (LID) method. MaskLID does not require any training and is designed to complement current high-performance sentence-level LIDs. Sentence-level LIDs are classifiers trained on monolingual texts to provide single…

2023

Glot500: Scaling Multilingual Corpora and Language Models to 500 Languages

ACL 2023long

The NLP community has mainly focused on scaling Large Language Models (LLMs) vertically, i.e., making them better for about 100 languages. We instead scale LLMs horizontally: we create, through continued pretraining, Glot500-m, an LLM that covers 511 predominantly low-resource languages. An importan…

2023

GlotLID: Language Identification for Low-Resource Languages

EMNLP 2023long findings

Several recent papers have published good solutions for language identification (LID) for about 300 high-resource and medium-resource languages. However, there is no LID available that (i) covers a wide range of low-resource languages, (ii) is rigorously evaluated and reliable and (iii) efficient an…

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