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Vision-Language Models (VLMs) demonstrate impressive zero-shot generalization through large-scale image-text pretraining, yet their performance can drop once the deployment distribution diverges from the training distribution. To address…

计算机视觉与模式识别 · 计算机科学 2025-10-23 Xiaozhen Qiao , Jingkai Zhao , Yuqiu Jiang , Xianda Guo , Zhe Sun , Hongyuan Zhang , Xuelong Li

In the context of continual learning, prototypes-as representative class embeddings-offer advantages in memory conservation and the mitigation of catastrophic forgetting. However, challenges related to semantic drift and prototype…

机器学习 · 计算机科学 2023-11-14 Zhuowei Li , Long Zhao , Zizhao Zhang , Han Zhang , Di Liu , Ting Liu , Dimitris N. Metaxas

Masked language modeling (MLM), a self-supervised pretraining objective, is widely used in natural language processing for learning text representations. MLM trains a model to predict a random sample of input tokens that have been replaced…

计算与语言 · 计算机科学 2021-09-07 Atsuki Yamaguchi , George Chrysostomou , Katerina Margatina , Nikolaos Aletras

How can we extend a pre-trained model to many language understanding tasks, without labeled or additional unlabeled data? Pre-trained language models (PLMs) have been effective for a wide range of NLP tasks. However, existing approaches…

计算与语言 · 计算机科学 2023-05-29 Xuandong Zhao , Siqi Ouyang , Zhiguo Yu , Ming Wu , Lei Li

Recent contrastive methods show significant improvement in self-supervised learning in several domains. In particular, contrastive methods are most effective where data augmentation can be easily constructed e.g. in computer vision.…

机器学习 · 计算机科学 2021-12-09 Konstantinos Kallidromitis , Denis Gudovskiy , Kazuki Kozuka , Iku Ohama , Luca Rigazio

The backpropagation method has enabled transformative uses of neural networks. Alternatively, for energy-based models, local learning methods involving only nearby neurons offer benefits in terms of decentralized training, and allow for the…

无序系统与神经网络 · 物理学 2025-01-30 Martin J. Falk , Adam T. Strupp , Benjamin Scellier , Arvind Murugan

Although pre-trained language models show good performance on various natural language processing tasks, they often rely on non-causal features and patterns to determine the outcome. For natural language inference tasks, previous results…

计算与语言 · 计算机科学 2024-10-29 Heerin Yang , Sseung-won Hwang , Jungmin So

Contrastive learning is a family of self-supervised methods where a model is trained to solve a classification task constructed from unlabeled data. It has recently emerged as one of the leading learning paradigms in the absence of labels…

机器学习 · 统计学 2021-03-05 Bingbin Liu , Pradeep Ravikumar , Andrej Risteski

This paper presents contrastive-tuning, a simple method employing contrastive training to align image and text models while still taking advantage of their pre-training. In our empirical study we find that locked pre-trained image models…

计算机视觉与模式识别 · 计算机科学 2022-06-23 Xiaohua Zhai , Xiao Wang , Basil Mustafa , Andreas Steiner , Daniel Keysers , Alexander Kolesnikov , Lucas Beyer

Current multimodal machine translation (MMT) systems rely on fully supervised data (i.e models are trained on sentences with their translations and accompanying images). However, this type of data is costly to collect, limiting the…

计算与语言 · 计算机科学 2025-03-12 Matthieu Futeral , Cordelia Schmid , Benoît Sagot , Rachel Bawden

In this paper, we introduce a novel weighted co-training approach that is guided by Large Language Models (LLMs). Namely, in our co-training approach, we use LLM labels on unlabeled data as target labels and co-train two encoder-only based…

机器学习 · 计算机科学 2025-09-24 Md Mezbaur Rahman , Cornelia Caragea

Contrastive Self-supervised Learning (CSL) is a practical solution that learns meaningful visual representations from massive data in an unsupervised approach. The ordinary CSL embeds the features extracted from neural networks onto…

计算机视觉与模式识别 · 计算机科学 2022-08-19 Shentong Mo , Zhun Sun , Chao Li

Post-training quantization is an effective method for reducing the serving cost of large language models, where the standard approach is to use a round-to-nearest quantization level scheme. However, this often introduces large errors due to…

Pre-trained Language Models are widely used in many important real-world applications. However, recent studies show that these models can encode social biases from large pre-training corpora and even amplify biases in downstream…

计算与语言 · 计算机科学 2023-10-20 Xiangjue Dong , Ziwei Zhu , Zhuoer Wang , Maria Teleki , James Caverlee

While BERT is an effective method for learning monolingual sentence embeddings for semantic similarity and embedding based transfer learning BERT based cross-lingual sentence embeddings have yet to be explored. We systematically investigate…

计算与语言 · 计算机科学 2025-10-21 Jingshu Liu , Raheel Qader , Gaëtan Caillaut , Mariam Nakhlé

An effective technique for obtaining high-quality representations is adding a projection head on top of the encoder during training, then discarding it and using the pre-projection representations. Despite its proven practical…

机器学习 · 计算机科学 2024-03-19 Yihao Xue , Eric Gan , Jiayi Ni , Siddharth Joshi , Baharan Mirzasoleiman

Customizable keyword spotting (KWS) in continuous speech has attracted increasing attention due to its real-world application potential. While contrastive learning (CL) has been widely used to extract keyword representations, previous CL…

音频与语音处理 · 电气工程与系统科学 2024-01-15 Yu Xi , Baochen Yang , Hao Li , Jiaqi Guo , Kai Yu

Generative language models (LMs) offer numerous advantages but may produce inappropriate or harmful outputs due to the harmful knowledge acquired during pre-training. This knowledge often manifests as undesirable correspondences, such as…

计算与语言 · 计算机科学 2024-08-20 Guitao Chen , Yunshen Wang , Hongye Sun , Guang Chen

(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

Vision-language models (VLMs) like CLIP exhibit strong zero-shot capabilities but often fail to generalize under distribution shifts. Test-time adaptation (TTA) allows models to update at inference time without labeled data, typically via…

计算机视觉与模式识别 · 计算机科学 2025-09-22 Marc Lafon , Gustavo Adolfo Vargas Hakim , Clément Rambour , Christian Desrosier , Nicolas Thome