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Large language models (LLMs) are frequently fine-tuned or unlearned to adapt to new tasks or eliminate undesirable behaviors. While existing evaluation methods assess performance after such interventions, there remains no general approach…

计算与语言 · 计算机科学 2025-07-30 Aly M. Kassem , Zhuan Shi , Negar Rostamzadeh , Golnoosh Farnadi

Providing example sentences that are diverse and aligned with learners' proficiency levels is essential for fostering effective language acquisition. This study examines the use of Pre-trained Language Models (PLMs) to produce example…

计算与语言 · 计算机科学 2025-06-05 Enrico Benedetti , Akiko Aizawa , Florian Boudin

As one of the most effective self-supervised representation learning methods, contrastive learning (CL) relies on multiple negative pairs to contrast against each positive pair. In the standard practice of contrastive learning, data…

机器学习 · 计算机科学 2024-01-18 Lu Wang , Chao Du , Pu Zhao , Chuan Luo , Zhangchi Zhu , Bo Qiao , Wei Zhang , Qingwei Lin , Saravan Rajmohan , Dongmei Zhang , Qi Zhang

Recent works have shown promising results of prompt tuning in stimulating pre-trained language models (PLMs) for natural language processing (NLP) tasks. However, to the best of our knowledge, existing works focus on prompt-tuning…

计算与语言 · 计算机科学 2022-05-24 Yuan Yao , Bowen Dong , Ao Zhang , Zhengyan Zhang , Ruobing Xie , Zhiyuan Liu , Leyu Lin , Maosong Sun , Jianyong Wang

Vision-language models are pre-trained by aligning image-text pairs in a common space to deal with open-set visual concepts. To boost the transferability of the pre-trained models, recent works adopt fixed or learnable prompts, i.e.,…

计算机视觉与模式识别 · 计算机科学 2024-03-26 Jiangmeng Li , Wenyi Mo , Wenwen Qiang , Bing Su , Changwen Zheng , Hui Xiong , Ji-Rong Wen

Model Parsing defines the research task of predicting hyperparameters of the generative model (GM), given a generated image as input. Since a diverse set of hyperparameters is jointly employed by the generative model, and dependencies often…

计算机视觉与模式识别 · 计算机科学 2024-11-01 Xiao Guo , Vishal Asnani , Sijia Liu , Xiaoming Liu

As large language models (LLMs) are increasingly used as evaluators for natural language generation tasks, ensuring unbiased assessments is essential. However, LLM evaluators often display biased preferences, such as favoring verbosity and…

计算与语言 · 计算机科学 2025-04-21 Hawon Jeong , ChaeHun Park , Jimin Hong , Hojoon Lee , Jaegul Choo

Prompt learning is an effective method to customize Vision-Language Models (VLMs) for various downstream tasks, involving tuning very few parameters of input prompt tokens. Recently, prompt pretraining in large-scale dataset (e.g.,…

计算机视觉与模式识别 · 计算机科学 2024-09-11 Zhenyuan Chen , Lingfeng Yang , Shuo Chen , Zhaowei Chen , Jiajun Liang , Xiang Li

In this paper, we study the problem of generating obstinate (over-stability) adversarial examples by word substitution in NLP, where input text is meaningfully changed but the model's prediction does not, even though it should. Previous…

计算与语言 · 计算机科学 2023-08-21 Yimu Wang , Peng Shi , Hongyang Zhang

Although foundational vision-language models (VLMs) have proven to be very successful for various semantic discrimination tasks, they still struggle to perform faithfully for fine-grained categorization. Moreover, foundational models…

计算机视觉与模式识别 · 计算机科学 2024-09-10 Soumitri Chattopadhyay , Sanket Biswas , Emanuele Vivoli , Josep Lladós

Perplexity (per word) is the most widely used metric for evaluating language models. Despite this, there has been no dearth of criticism for this metric. Most of these criticisms center around lack of correlation with extrinsic metrics like…

计算与语言 · 计算机科学 2016-04-01 Kushal Arora , Anand Rangarajan

Recently, large language models (LLMs) have emerged as a notable field, attracting significant attention for its ability to automatically generate intelligent contents for various application domains. However, LLMs still suffer from…

密码学与安全 · 计算机科学 2024-04-29 Kongyang Chen , Zixin Wang , Bing Mi , Waixi Liu , Shaowei Wang , Xiaojun Ren , Jiaxing Shen

Retrained large language models (LLMs) have become extensively used across various sub-disciplines of natural language processing (NLP). In NLP, text classification problems have garnered considerable focus, but still faced with some…

计算与语言 · 计算机科学 2023-12-05 Zhiqiang Wang , Yiran Pang , Yanbin Lin

Automatic counterspeech generation methods have been developed to assist efforts in combating hate speech. Existing research focuses on generating counterspeech with linguistic attributes such as being polite, informative, and…

计算与语言 · 计算机科学 2024-10-02 Lingzi Hong , Pengcheng Luo , Eduardo Blanco , Xiaoying Song

Large language models memorize parts of their training data. Memorizing short snippets and facts is required to answer questions about the world and to be fluent in any language. But models have also been shown to reproduce long verbatim…

计算与语言 · 计算机科学 2024-11-18 Michael Aerni , Javier Rando , Edoardo Debenedetti , Nicholas Carlini , Daphne Ippolito , Florian Tramèr

(Very early draft)Traditional supervised learning keeps pushing convolution neural network(CNN) achieving state-of-art performance. However, lack of large-scale annotation data is always a big problem due to the high cost of it, even…

计算机视觉与模式识别 · 计算机科学 2019-11-26 Zhibo Wang , Shen Yan , Xiaoyu Zhang , Niels Lobo

Safety alignment has become a critical step to ensure LLMs refuse harmful requests while providing helpful and harmless responses. However, despite the ubiquity of safety alignment for deployed frontier models, two separate lines of recent…

密码学与安全 · 计算机科学 2026-04-06 John T. Halloran

In recent years, Large Language Models (LLMs) have demonstrated remarkable proficiency in comprehending and generating natural language, with a growing prevalence in the domain of recommendation systems. However, LLMs still face a…

信息检索 · 计算机科学 2024-12-13 Xinyu Li , Chuang Zhao , Hongke Zhao , Likang Wu , Ming HE

Generative neural samplers are probabilistic models that implement sampling using feedforward neural networks: they take a random input vector and produce a sample from a probability distribution defined by the network weights. These models…

机器学习 · 统计学 2016-06-03 Sebastian Nowozin , Botond Cseke , Ryota Tomioka

Recently, language models have demonstrated strong performance on various natural language understanding tasks. Language models trained on large human-generated corpus encode not only a significant amount of human knowledge, but also the…

计算与语言 · 计算机科学 2023-04-10 Damin Zhang , Julia Rayz , Romila Pradhan