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Tokenization shapes how language models perceive morphology and meaning in NLP, yet widely used frequency-driven subword tokenizers (e.g., Byte Pair Encoding and WordPiece) can fragment morphologically rich and agglutinative languages in…

Gender-inclusive NLP research has documented the harmful limitations of gender binary-centric large language models (LLM), such as the inability to correctly use gender-diverse English neopronouns (e.g., xe, zir, fae). While data scarcity…

Large language models (LLMs) trained on text demonstrated remarkable results on natural language processing (NLP) tasks. These models have been adapted to decipher the language of DNA, where sequences of nucleotides act as "words" that…

Sequence-to-sequence models with an implicit alignment mechanism (e.g. attention) are closing the performance gap towards traditional hybrid hidden Markov models (HMM) for the task of automatic speech recognition. One important factor to…

音频与语音处理 · 电气工程与系统科学 2020-05-21 Wilfried Michel , Ralf Schlüter , Hermann Ney

The assumption across nearly all language model (LM) tokenization schemes is that tokens should be subwords, i.e., contained within word boundaries. While providing a seemingly reasonable inductive bias, is this common practice limiting the…

计算与语言 · 计算机科学 2025-08-28 Alisa Liu , Jonathan Hayase , Valentin Hofmann , Sewoong Oh , Noah A. Smith , Yejin Choi

We introduce a new tokenizer for language models that minimizes the average tokens per character, thereby reducing the number of tokens needed to represent text during training and to generate text during inference. Our method, which we…

计算与语言 · 计算机科学 2025-11-27 Dong Dong , Weijie Su

Tokenization is a crucial step in information retrieval, especially for lexical matching algorithms, where the quality of indexable tokens directly impacts the effectiveness of a retrieval system. Since different languages have unique…

计算与语言 · 计算机科学 2022-10-12 Odunayo Ogundepo , Xinyu Zhang , Jimmy Lin

Embedding models have become essential for retrieval-augmented generation (RAG) tasks, semantic clustering, and text re-ranking. But despite their growing use, many of these come with notable limitations. For example, Jina fails to capture…

Despite recent advances in subquadratic attention mechanisms or state-space models, processing long token sequences still imposes significant computational requirements. Token merging has emerged as a solution to increase computational…

机器学习 · 计算机科学 2025-08-06 Leon Götz , Marcel Kollovieh , Stephan Günnemann , Leo Schwinn

The challenges facing speech recognition systems, such as variations in pronunciations, adverse audio conditions, and the scarcity of labeled data, emphasize the necessity for a post-processing step that corrects recurring errors. Previous…

计算与语言 · 计算机科学 2023-10-18 Tomer Wullach , Shlomo E. Chazan

Deep biasing (DB) enhances the performance of end-to-end automatic speech recognition (E2E-ASR) models for rare words or contextual phrases using a bias list. However, most existing methods treat bias phrases as sequences of subwords in a…

音频与语音处理 · 电气工程与系统科学 2024-09-02 Yui Sudo , Yosuke Fukumoto , Muhammad Shakeel , Yifan Peng , Shinji Watanabe

Recent end-to-end automatic speech recognition (ASR) systems often utilize a Transformer-based acoustic encoder that generates embedding at a high frame rate. However, this design is inefficient, particularly for long speech signals due to…

计算与语言 · 计算机科学 2023-06-29 Yuang Li , Yu Wu , Jinyu Li , Shujie Liu

Diffusion language models offer parallel token generation and inherent bidirectionality, promising more efficient and powerful sequence modeling compared to autoregressive approaches. However, state-of-the-art diffusion models (e.g., Dream…

计算与语言 · 计算机科学 2025-10-10 Zhanqiu Hu , Jian Meng , Yash Akhauri , Mohamed S. Abdelfattah , Jae-sun Seo , Zhiru Zhang , Udit Gupta

Masked image modeling (MIM) has emerged as a promising approach for pre-training Vision Transformers (ViTs). MIMs predict masked tokens token-wise to recover target signals that are tokenized from images or generated by pre-trained models…

计算机视觉与模式识别 · 计算机科学 2025-03-24 Taekyung Kim , Byeongho Heo , Dongyoon Han

Subword tokenization critically affects Natural Language Processing (NLP) performance, yet its behavior in morphologically rich and low-resource language families remains under-explored. This study systematically compares three subword…

计算与语言 · 计算机科学 2026-03-31 Nuo Xu , Ahrii Kim

Tokenization is a fundamental step in natural language processing, breaking text into units that computational models can process. While learned subword tokenizers have become the de-facto standard, they present challenges such as large…

计算与语言 · 计算机科学 2025-01-22 Pit Neitemeier , Björn Deiseroth , Constantin Eichenberg , Lukas Balles

Large language models pretrained on general-domain corpora often exhibit tokenization inefficiencies when applied to specialized domains. Although continual pretraining for domain adaptation partially alleviate performance degradation, it…

计算与语言 · 计算机科学 2026-05-19 Gunjan Balde , Soumyadeep Roy , Mainack Mondal , Niloy Ganguly

Large Language Models (LLMs) typically represent numbers using multiple tokens, which requires the model to aggregate these tokens to interpret numerical values. This fragmentation makes both training and inference less efficient and…

计算与语言 · 计算机科学 2026-04-22 Tianyi Zhou , Deqing Fu , Mahdi Soltanolkotabi , Robin Jia , Vatsal Sharan

We introduce Dynamic Nested Depth (DND), a novel method that improves performance for off-the-shelf LLMs by selecting critical tokens to reprocess in a nested depth manner. Specifically, at the end of the given transformer layer, DND…

计算与语言 · 计算机科学 2026-01-28 Tieyuan Chen , Xiaodong Chen , Haoxing Chen , Zhenzhong Lan , Weiyao Lin , Jianguo Li

Google's multilingual speech recognition system combines low-level acoustic signals with language-specific recognizer signals to better predict the language of an utterance. This paper presents our experience with different signal…

机器学习 · 计算机科学 2019-11-05 Shengye Wang , Li Wan , Yang Yu , Ignacio Lopez Moreno