Papers by Alexander Weber
Grammar Pruning: Enabling Low-Latency Zero-Shot Task-Oriented Language Models for Edge AI (2025.emnlp-main)
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Octavian Alexandru Trifan, Jason Lee Weber, Marc Titus Trifan, Alexandru Nicolau, Alexander Veidenbaum
| Challenge: | Existing approaches to task-oriented semantic parsers require high latency and extensive resource requirements. |
| Approach: | They propose a framework that couples a rule-based entity extractor with an iterative grammar-constrained decoder. |
| Outcome: | The proposed framework achieves an average execution accuracy of over 90% while sustaining at least 2x lower end-to-end latency than existing methods. |
Investigating Multilingual Instruction-Tuning: Do Polyglot Models Demand for Multilingual Instructions? (2024.emnlp-main)
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Alexander Weber, Klaudia Thellmann, Jan Ebert, Nicolas Flores-Herr, Jens Lehmann, Michael Fromm, Mehdi Ali
| Challenge: | a study of multilingual pre-trained LLMs on parallel instruction-tuning benchmarks shows that instruction-following models can be used across languages by up to 9.9%. |
| Approach: | They conduct an extensive study of the performance of multilingual pre-trained LLMs instruction-tuned on parallel instruction-uning datasets. |
| Outcome: | The proposed model improves cross-lingual instruction following capabilities by 9.9% on a large and mid-sized LLM on parallel instruction-tuning datasets. |
Tokenizer Choice For LLM Training: Negligible or Crucial? (2024.findings-naacl)
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Mehdi Ali, Michael Fromm, Klaudia Thellmann, Richard Rutmann, Max Lübbering, Johannes Leveling, Katrin Klug, Jan Ebert, Niclas Doll, Jasper Buschhoff, Charvi Jain, Alexander Weber, Lena Jurkschat, Hammam Abdelwahab, Chelsea John, Pedro Ortiz Suarez, Malte Ostendorff, Samuel Weinbach, Rafet Sifa, Stefan Kesselheim, Nicolas Flores-Herr
| Challenge: | Recent success of large language models has been driven by curating the training dataset composition, scaling of model architectures and advancements in pretraining objectives, leaving tokenizer influence as a blind spot. |
| Approach: | They conduct a comprehensive study on the influence of tokenizer choice on LLM downstream performance by training 24 mono- and multilingual LLMs at a 2.6B parameter scale. |
| Outcome: | The proposed model can significantly impact the model's downstream performance and training costs. |