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State-of-the-art model for zero-shot cross-lingual spoken language understanding performs cross-lingual unsupervised contrastive learning to achieve the label-agnostic semantic alignment between each utterance and its code-switched data.…

计算与语言 · 计算机科学 2024-05-13 Bowen Xing , Ivor W. Tsang

Contrastive learning methods have attracted considerable attention due to their remarkable success in analyzing graph-structured data. Inspired by the success of contrastive learning, we propose a novel framework for contrastive…

机器学习 · 计算机科学 2023-06-21 Xiaojuan Zhang , Jun Fu , Shuang Li

Contrastive learning and self-supervised techniques have gained prevalence in computer vision for the past few years. It is essential for medical image analysis, which is often notorious for its lack of annotations. Most existing…

图像与视频处理 · 电气工程与系统科学 2022-03-07 Jun Li , Quan Quan , S. Kevin Zhou

The prior self-supervised learning researches mainly select image-level instance discrimination as pretext task. It achieves a fantastic classification performance that is comparable to supervised learning methods. However, with degraded…

计算机视觉与模式识别 · 计算机科学 2022-05-11 Bing Zhao , Jun Li , Hong Zhu

We introduce DocSCAN, a completely unsupervised text classification approach using Semantic Clustering by Adopting Nearest-Neighbors (SCAN). For each document, we obtain semantically informative vectors from a large pre-trained language…

计算与语言 · 计算机科学 2022-10-05 Dominik Stammbach , Elliott Ash

Training image-based object detectors presents formidable challenges, as it entails not only the complexities of object detection but also the added intricacies of precisely localizing objects within potentially diverse and noisy…

计算机视觉与模式识别 · 计算机科学 2024-02-22 Chandan Kumar , Jansel Herrera-Gerena , John Just , Matthew Darr , Ali Jannesari

Recent mask proposal models have significantly improved the performance of zero-shot semantic segmentation. However, the use of a `background' embedding during training in these methods is problematic as the resulting model tends to…

计算机视觉与模式识别 · 计算机科学 2023-01-19 Son Duy Dao , Hengcan Shi , Dinh Phung , Jianfei Cai

Pre-trained language models (PLMs) have been shown effective for zero-shot (0shot) text classification. 0shot models based on natural language inference (NLI) and next sentence prediction (NSP) employ cross-encoder architecture and infer by…

计算与语言 · 计算机科学 2022-10-25 Prafulla Kumar Choubey , Yu Bai , Chien-Sheng Wu , Wenhao Liu , Nazneen Rajani

Existing text recognition methods usually need large-scale training data. Most of them rely on synthetic training data due to the lack of annotated real images. However, there is a domain gap between the synthetic data and real data, which…

计算机视觉与模式识别 · 计算机科学 2023-03-03 Mingkun Yang , Minghui Liao , Pu Lu , Jing Wang , Shenggao Zhu , Hualin Luo , Qi Tian , Xiang Bai

Natural language prompts have been shown to facilitate cross-task generalization for large language models. However, with no or limited labeled examples, the cross-task performance is highly sensitive to the choice of prompts, while…

计算与语言 · 计算机科学 2022-11-10 Chonghua Liao , Yanan Zheng , Zhilin Yang

In some of object recognition problems, labeled data may not be available for all categories. Zero-shot learning utilizes auxiliary information (also called signatures) describing each category in order to find a classifier that can…

计算机视觉与模式识别 · 计算机科学 2016-06-01 Seyed Mohsen Shojaee , Mahdieh Soleymani Baghshah

Self-training methods have proven to be effective in exploiting abundant unlabeled data in semi-supervised learning, particularly when labeled data is scarce. While many of these approaches rely on a cross-entropy loss function (CE), recent…

机器学习 · 计算机科学 2024-09-12 Aurelien Gauffre , Julien Horvat , Massih-Reza Amini

In cross-lingual named entity recognition (NER), self-training is commonly used to bridge the linguistic gap by training on pseudo-labeled target-language data. However, due to sub-optimal performance on target languages, the pseudo labels…

计算与语言 · 计算机科学 2023-06-06 Ran Zhou , Xin Li , Lidong Bing , Erik Cambria , Chunyan Miao

Classification predicts classes of objects using the knowledge learned during the training phase. This process requires learning from labeled samples. However, the labeled samples usually limited. Annotation process is annoying, tedious,…

机器学习 · 计算机科学 2017-06-06 Shahira Shaaban Azab , Mohamed Farouk Abdel Hady , Hesham Ahmed Hefny

Zero-shot text classification remains a difficult task in domains with evolving knowledge and ambiguous category boundaries, such as ticketing systems. Large language models (LLMs) often struggle to generalize in these scenarios due to…

机器学习 · 计算机科学 2025-08-05 Amrit Rajeev , Udayaadithya Avadhanam , Harshula Tulapurkar , SaiBarath Sundar

Self-supervised models trained with a contrastive loss such as CLIP have shown to be very powerful in zero-shot classification settings. However, to be used as a zero-shot classifier these models require the user to provide new captions…

机器学习 · 计算机科学 2022-10-31 Bhawesh Kumar , Anil Palepu , Rudraksh Tuwani , Andrew Beam

Speech emotion recognition (SER) is a key technology to enable more natural human-machine communication. However, SER has long suffered from a lack of public large-scale labeled datasets. To circumvent this problem, we investigate how…

Few-shot learning aims to transfer information from one task to enable generalization on novel tasks given a few examples. This information is present both in the domain and the class labels. In this work we investigate the complementary…

计算机视觉与模式识别 · 计算机科学 2021-06-23 Orchid Majumder , Avinash Ravichandran , Subhransu Maji , Alessandro Achille , Marzia Polito , Stefano Soatto

Zero-shot learning (ZSL) aims to recognize classes that do not have samples in the training set. One representative solution is to directly learn an embedding function associating visual features with corresponding class semantics for…

计算机视觉与模式识别 · 计算机科学 2023-07-19 Yu Du , Miaojing Shi , Fangyun Wei , Guoqi Li

Conversational Search (CS) involves retrieving relevant documents from a corpus while considering the conversational context, integrating retrieval with context modeling. Recent advancements in Large Language Models (LLMs) have…

信息检索 · 计算机科学 2025-05-19 Simon Lupart , Mohammad Aliannejadi , Evangelos Kanoulas