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Tudor Berariu

4 accepted papers

2025

From Characters to Tokens: Dynamic Grouping with Hierarchical BPE

EMNLP 2025

Subword tokenization methods like Byte Pair Encoding (BPE) are widely used in large language models due to their balance of vocabulary compactness and representational power. However, they suffer from inefficiencies in representing rare words and require large embedding matrices. Character-level mod

Cited by 0SourcePDFScholar
2025

Incremental Sequence Classification with Temporal Consistency

NeurIPS 2025spotlight

We address the problem of incremental sequence classification, where predictions are updated as new elements in the sequence are revealed. Drawing on temporal-difference learning from reinforcement learning, we identify a temporal-consistency condition that successive predictions should satisfy. We…

Cited by 0SourceScholar
2024

Finding Increasingly Large Extremal Graphs with AlphaZero and Tabu Search

IJCAI 2024poster

This work proposes a new learning-to-search benchmark and uses AI to discover new mathematical knowledge related to an open conjecture of Erdos (1975) in extremal graph theory. The problem is to find graphs with a given size (number of nodes) that maximize the number of edges without having 3- or 4-…

Cited by 7SourcePDFScholar
2021

Spectral Normalisation for Deep Reinforcement Learning: An Optimisation Perspective

ICML 2021spotlight

Most of the recent deep reinforcement learning advances take an RL-centric perspective and focus on refinements of the training objective. We diverge from this view and show we can recover the performance of these developments not by changing the objective, but by regularising the value-function est…