Papers by Yassine El Kheir
MorphBPE: Morphology-Aware Tokenization for Efficient LLM Training (2026.findings-acl)
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| Challenge: | Tokenization is a key design choice in modern NLP systems and a critical bottleneck for multilingual Large Language Models. |
| Approach: | They propose a tokenization extension that constrains merge operations to respect morpheme boundaries while preserving inference. |
| Outcome: | The proposed tokenization improves morphological coherence and language model cross-entropy in four languages. |
LAraBench: Benchmarking Arabic AI with Large Language Models (2024.eacl-long)
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Ahmed Abdelali, Hamdy Mubarak, Shammur Chowdhury, Maram Hasanain, Basel Mousi, Sabri Boughorbel, Samir Abdaljalil, Yassine El Kheir, Daniel Izham, Fahim Dalvi, Majd Hawasly, Nizi Nazar, Youssef Elshahawy, Ahmed Ali, Nadir Durrani, Natasa Milic-Frayling, Firoj Alam
| Challenge: | Recent advances in Large Language Models (LLMs) have significantly influenced the landscape of language and speech research. |
| Approach: | They used GPT-3.5-turbo, GPT-4, BLOOMZ, Jais-13b-chat, Whisper, and USM to tackle 33 distinct tasks across 61 datasets. |
| Outcome: | The proposed model outperforms SOTA models in zero-shot learning, with a few exceptions. |
Beyond Orthography: Automatic Recovery of Short Vowels and Dialectal Sounds in Arabic (2024.acl-long)
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| Challenge: | Existing algorithms for recognizing borrowed and dialectal sounds are limited to Arabic, a dialect-rich language containing more than 22 major dialects. |
| Approach: | They propose a framework to recognize borrowed and dialectal sounds within phonologically diverse and dialect-rich languages that extends beyond its standard orthographic sound sets. |
| Outcome: | The proposed framework improves character error rate by 7% with only one and half hours of training data compared to the baseline. |
Comprehensive Layer-wise Analysis of SSL Models for Audio Deepfake Detection (2025.findings-naacl)
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| Challenge: | Existing algorithms for audio deepfake detection are based on layer-wise analysis of self-supervised learning (SSL) models. |
| Approach: | They conduct a layer-wise analysis of self-supervised learning (SSL) models for audio deepfake detection across diverse contexts. |
| Outcome: | The proposed models achieve competitive equal error rate (EER) scores even when employing a reduced number of layers. |