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When large language models are fine-tuned to generate persona- or tone-conditioned responses, their output diversity is severely limited--a failure we term Cross-Style Collapse. We trace this collapse to the cross-entropy objective, which…

计算与语言 · 计算机科学 2026-05-28 Kerui Peng , Feifei Li , Xingyu Fan , Wenhui Que

Tokenization is the first step in modern neural language model pipelines where an input text is converted to a sequence of subword tokens. We introduce from first principles a finite-state transduction framework which can efficiently encode…

计算与语言 · 计算机科学 2024-10-22 Marco Cognetta , Naoaki Okazaki

Understanding the latent space geometry of large language models (LLMs) is key to interpreting their behavior and improving alignment. Yet it remains unclear to what extent LLMs linearly organize representations related to semantic…

计算与语言 · 计算机科学 2026-01-22 Baturay Saglam , Paul Kassianik , Blaine Nelson , Sajana Weerawardhena , Yaron Singer , Amin Karbasi

Practitioners deploying multi-agent large language model (LLM) systems must currently choose between communication topologies such as chain, star, mesh, and richer variants without any pre-inference diagnostic for which topology will…

多智能体系统 · 计算机科学 2026-05-15 Ethan Parks , Dalal Alharthi

Systems for language understanding have become remarkably strong at overcoming linguistic imperfections in tasks involving phrase matching or simple reasoning. Yet, their accuracy drops dramatically as the number of reasoning steps…

计算与语言 · 计算机科学 2020-05-04 Daniel Khashabi , Erfan Sadeqi Azer , Tushar Khot , Ashish Sabharwal , Dan Roth

The automation of Cyber Threat Intelligence (CTI) relies heavily on Named Entity Recognition (NER) to extract critical entities from unstructured text. Currently, Large Language Models (LLMs) primarily address this task through…

密码学与安全 · 计算机科学 2025-12-23 Jiaren Peng , Hongda Sun , Xuan Tian , Cheng Huang , Zeqing Li , Rui Yan

Existing question answering systems can only predict answers without explicit reasoning processes, which hinder their explainability and make us overestimate their ability of understanding and reasoning over natural language. In this work,…

计算与语言 · 计算机科学 2020-04-06 Ran Wang , Kun Tao , Dingjie Song , Zhilong Zhang , Xiao Ma , Xi'ao Su , Xinyu Dai

Semi-supervised learning has shown promise in allowing NLP models to generalize from small amounts of labeled data. Meanwhile, pretrained transformer models act as black-box correlation engines that are difficult to explain and sometimes…

计算与语言 · 计算机科学 2022-10-17 Reid Pryzant , Ziyi Yang , Yichong Xu , Chenguang Zhu , Michael Zeng

Text matching is a fundamental problem in natural language processing. Neural models using bidirectional LSTMs for sentence encoding and inter-sentence attention mechanisms perform remarkably well on several benchmark datasets. We propose…

计算与语言 · 计算机科学 2018-09-12 Siddhartha Brahma

Large Language Models (LLMs) enable dynamic game interactions but fail to follow essential procedural flows in rule-governed trading systems, eroding player trust. This work resolves the core tension between the creative flexibility of LLMs…

人工智能 · 计算机科学 2025-10-30 Minkyung Kim , Junsik Kim , Woongcheol Yang , Sangdon Park , Sohee Bae

Many NLP models operate over sequences of subword tokens produced by hand-crafted tokenization rules and heuristic subword induction algorithms. A simple universal alternative is to represent every computerized text as a sequence of bytes…

计算与语言 · 计算机科学 2021-04-13 Uri Shaham , Omer Levy

The task of natural language inference (NLI) asks whether a given premise (expressed in NL) entails a given NL hypothesis. NLI benchmarks contain human ratings of entailment, but the meaning relationships driving these ratings are not…

计算与语言 · 计算机科学 2023-09-06 Juri Opitz , Shira Wein , Julius Steen , Anette Frank , Nathan Schneider

Diffusion Large Language Models (DLLMs) promise fast non-autoregressive inference but suffer a severe quality-speed trade-off in parallel decoding. This stems from the ''combinatorial contradiction'' phenomenon, where parallel tokens form…

计算与语言 · 计算机科学 2026-02-27 Yushi Ye , Feng Hong , Huangjie Zheng , Xu Chen , Zhiyong Chen , Yanfeng Wang , Jiangchao Yao

Silent Speech Interfaces (SSIs) have gained attention for their ability to generate intelligible speech from non-acoustic signals. While significant progress has been made in advancing speech generation pipelines, limited work has addressed…

计算与语言 · 计算机科学 2025-09-08 Nithyashree Sivasubramaniam

Long-Text Understanding (LTU) at million-token scale requires balancing reasoning fidelity with computational efficiency. Frontier long-context LLMs can process millions of token contexts end-to-end, but they suffer from high token…

计算与语言 · 计算机科学 2026-05-07 Zhenliang Zhang , Wenqing Wang , Yong Hu , Yaming Yang , Jiaheng Gao , Chen Shen , Xiaojun Wan

The language models, especially the basic text classification models, have been shown to be susceptible to textual adversarial attacks such as synonym substitution and word insertion attacks. To defend against such attacks, a growing body…

密码学与安全 · 计算机科学 2024-06-12 Xinyu Zhang , Hanbin Hong , Yuan Hong , Peng Huang , Binghui Wang , Zhongjie Ba , Kui Ren

Recent studies reveal that large language models (LLMs) exhibit limited logical reasoning abilities in mathematical problem-solving, instead often relying on pattern-matching and memorization. We systematically analyze this limitation,…

计算与语言 · 计算机科学 2026-04-21 Shaojie Wang , Liang Zhang

State recognition of the environment and objects, such as the open/closed state of doors and the on/off of lights, is indispensable for robots that perform daily life support and security tasks. Until now, state recognition methods have…

机器人学 · 计算机科学 2024-10-31 Kento Kawaharazuka , Yoshiki Obinata , Naoaki Kanazawa , Kei Okada , Masayuki Inaba

Researchers have relegated natural language processing tasks to Transformer-type models, particularly generative models, because these models exhibit high versatility when performing generation and classification tasks. As the size of these…

计算与语言 · 计算机科学 2025-04-04 Fabio Yáñez-Romero , Andrés Montoyo , Armando Suárez , Yoan Gutiérrez , Ruslan Mitkov

While Large Language Models (LLMs) demonstrate exceptional performance in surface-level text generation, their nature in handling complex multi-step reasoning tasks often remains one of ``statistical fitting'' rather than systematic logical…

机器学习 · 计算机科学 2026-01-27 Lianlei Shan , Han Chen , Yixuan Wang , Zhenjie Liu , Wei Li