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We introduce a noisy channel approach for language model prompting in few-shot text classification. Instead of computing the likelihood of the label given the input (referred as direct models), channel models compute the conditional…

计算与语言 · 计算机科学 2022-03-16 Sewon Min , Mike Lewis , Hannaneh Hajishirzi , Luke Zettlemoyer

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

Large-scale pretrained language models have led to dramatic improvements in text generation. Impressive performance can be achieved by finetuning only on a small number of instances (few-shot setting). Nonetheless, almost all previous work…

计算与语言 · 计算机科学 2021-07-08 Ernie Chang , Xiaoyu Shen , Hui-Syuan Yeh , Vera Demberg

Prototypical network for Few shot learning tries to learn an embedding function in the encoder that embeds images with similar features close to one another in the embedding space. However, in this process, the support set samples for a…

计算机视觉与模式识别 · 计算机科学 2022-11-23 Manas Gogoi , Sambhavi Tiwari , Shekhar Verma

Few-shot learning benchmarks are critical for evaluating modern NLP techniques. It is possible, however, that benchmarks favor methods which easily make use of unlabeled text, because researchers can use unlabeled text from the test set to…

计算与语言 · 计算机科学 2024-10-03 Kush Dubey

Few-shot classification is a challenging problem that aims to learn a model that can adapt to unseen classes given a few labeled samples. Recent approaches pre-train a feature extractor, and then fine-tune for episodic meta-learning. Other…

计算机视觉与模式识别 · 计算机科学 2022-03-28 Philip Chikontwe , Soopil Kim , Sang Hyun Park

Partial-label learning (PLL) generally focuses on inducing a noise-tolerant multi-class classifier by training on overly-annotated samples, each of which is annotated with a set of labels, but only one is the valid label. A basic promise of…

计算与语言 · 计算机科学 2021-06-03 Yunfeng Zhao , Guoxian Yu , Lei Liu , Zhongmin Yan , Lizhen Cui , Carlotta Domeniconi

In this paper, we look at cross-domain few-shot classification which presents the challenging task of learning new classes in previously unseen domains with few labelled examples. Existing methods, though somewhat effective, encounter…

计算机视觉与模式识别 · 计算机科学 2024-04-04 Rashindrie Perera , Saman Halgamuge

Few-shot learning (FSL) is popular due to its ability to adapt to novel classes. Compared with inductive few-shot learning, transductive models typically perform better as they leverage all samples of the query set. The two existing classes…

计算机视觉与模式识别 · 计算机科学 2023-04-25 Hao Zhu , Piotr Koniusz

Multi-modal (vision-language) models, such as CLIP, are replacing traditional supervised pre-training models (e.g., ImageNet-based pre-training) as the new generation of visual foundation models. These models with robust and aligned…

计算机视觉与模式识别 · 计算机科学 2024-01-05 Fan Liu , Tianshu Zhang , Wenwen Dai , Wenwen Cai , Xiaocong Zhou , Delong Chen

Few-shot classification aims at classifying categories of a novel task by learning from just a few (typically, 1 to 5) labelled examples. An effective approach to few-shot classification involves a prior model trained on a large-sample base…

计算机视觉与模式识别 · 计算机科学 2021-09-22 Rajshekhar Das , Yu-Xiong Wang , JoséM. F. Moura

In this paper, we propose an approach to improve few-shot classification performance using a composite rotation based auxiliary task. Few-shot classification methods aim to produce neural networks that perform well for classes with a large…

计算机视觉与模式识别 · 计算机科学 2020-11-24 Pratik Mazumder , Pravendra Singh , Vinay P. Namboodiri

The prompt has become an effective linguistic tool for utilizing pre-trained language models. However, in few-shot scenarios, subtle changes in the prompt design always make the result widely different, and the prompt learning methods also…

计算与语言 · 计算机科学 2024-03-13 Jinta Weng , Yifan Deng , d Donghao Li , Hao You , Yue Hu , Heyan Huang

Few-shot learning aims at recognizing new instances from classes with limited samples. This challenging task is usually alleviated by performing meta-learning on similar tasks. However, the resulting models are black-boxes. There has been…

机器学习 · 计算机科学 2022-03-01 Mohammad Reza Zarei , Majid Komeili

Large pretrained Transformer-based language models like BERT and GPT have changed the landscape of Natural Language Processing (NLP). However, fine tuning such models still requires a large number of training examples for each target task,…

机器学习 · 计算机科学 2022-11-11 Arijit Sehanobish , Kawshik Kannan , Nabila Abraham , Anasuya Das , Benjamin Odry

Few-shot learning arises in important practical scenarios, such as when a natural language understanding system needs to learn new semantic labels for an emerging, resource-scarce domain. In this paper, we explore retrieval-based methods…

计算与语言 · 计算机科学 2021-04-14 Dian Yu , Luheng He , Yuan Zhang , Xinya Du , Panupong Pasupat , Qi Li

Even though large pre-trained multilingual models (e.g. mBERT, XLM-R) have led to significant performance gains on a wide range of cross-lingual NLP tasks, success on many downstream tasks still relies on the availability of sufficient…

计算与语言 · 计算机科学 2021-09-07 M Saiful Bari , Batool Haider , Saab Mansour

Meta-learning methods have been extensively studied and applied in computer vision, especially for few-shot classification tasks. The key idea of meta-learning for few-shot classification is to mimic the few-shot situations faced at test…

计算机视觉与模式识别 · 计算机科学 2020-07-20 Chenghao Liu , Zhihao Wang , Doyen Sahoo , Yuan Fang , Kun Zhang , Steven C. H. Hoi

Few-shot segmentation is a challenging task, requiring the extraction of a generalizable representation from only a few annotated samples, in order to segment novel query images. A common approach is to model each class with a single…

计算机视觉与模式识别 · 计算机科学 2021-03-31 Joakim Johnander , Johan Edstedt , Martin Danelljan , Michael Felsberg , Fahad Shahbaz Khan

Transformer-based language models have achieved remarkable success in few-shot in-context learning and drawn a lot of research interest. However, these models' performance greatly depends on the choice of the example prompts and also has…

计算与语言 · 计算机科学 2023-06-21 Genta Indra Winata , Liang-Kang Huang , Soumya Vadlamannati , Yash Chandarana