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Recently, pre-trained transformer-based models have achieved great success in the task of definition generation (DG). However, previous encoder-decoder models lack effective representation learning to contain full semantic components of the…

Computation and Language · Computer Science 2022-10-04 Hengyuan Zhang , Dawei Li , Shiping Yang , Yanran Li

Unsupervised representation learning has recently received lots of interest due to its powerful generalizability through effectively leveraging large-scale unlabeled data. There are two prevalent approaches for this, contrastive learning…

Machine Learning · Computer Science 2021-06-14 Saehoon Kim , Sungwoong Kim , Juho Lee

Creating 3D content from single-view images is a challenging problem that has attracted considerable attention in recent years. Current approaches typically utilize score distillation sampling (SDS) from pre-trained 2D diffusion models to…

Computer Vision and Pattern Recognition · Computer Science 2025-04-14 Junbang Liu , Enpei Huang , Dongxing Mao , Hui Zhang , Xinyuan Song , Yongxin Ni

Contrastive learning has been successfully used for retrieval of semantically aligned sentences, but it often requires large batch sizes or careful engineering to work well. In this paper, we instead propose a generative model for learning…

Computation and Language · Computer Science 2023-06-06 John Wieting , Jonathan H. Clark , William W. Cohen , Graham Neubig , Taylor Berg-Kirkpatrick

Mainstream 3D representation learning approaches are built upon contrastive or generative modeling pretext tasks, where great improvements in performance on various downstream tasks have been achieved. However, we find these two paradigms…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Zekun Qi , Runpei Dong , Guofan Fan , Zheng Ge , Xiangyu Zhang , Kaisheng Ma , Li Yi

Relation extraction is an important but challenging task that aims to extract all hidden relational facts from the text. With the development of deep language models, relation extraction methods have achieved good performance on various…

Computation and Language · Computer Science 2022-08-17 Sheng Zhang , Patrick Ng , Zhiguo Wang , Bing Xiang

Graph contrastive learning has emerged as a powerful tool for unsupervised graph representation learning. The key to the success of graph contrastive learning is to acquire high-quality positive and negative samples as contrasting pairs for…

Machine Learning · Computer Science 2023-05-19 Haoran Yang , Hongxu Chen , Sixiao Zhang , Xiangguo Sun , Qian Li , Xiangyu Zhao , Guandong Xu

Recently, contrastive learning attracts increasing interests in neural text generation as a new solution to alleviate the exposure bias problem. It introduces a sequence-level training signal which is crucial to generation tasks that always…

Computation and Language · Computer Science 2023-02-06 Chenxin An , Jiangtao Feng , Kai Lv , Lingpeng Kong , Xipeng Qiu , Xuanjing Huang

Novelty detection is the process of determining whether a query example differs from the learned training distribution. Previous methods attempt to learn the representation of the normal samples via generative adversarial networks (GANs).…

Computer Vision and Pattern Recognition · Computer Science 2021-06-21 Chengwei Chen , Yuan Xie , Shaohui Lin , Ruizhi Qiao , Jian Zhou , Xin Tan , Yi Zhang , Lizhuang Ma

Considering a collection of RDF triples, the RDF-to-text generation task aims to generate a text description. Most previous methods solve this task using a sequence-to-sequence model or using a graph-based model to encode RDF triples and to…

Computation and Language · Computer Science 2022-03-24 Hanning Gao , Lingfei Wu , Hongyun Zhang , Zhihua Wei , Po Hu , Fangli Xu , Bo Long

Relation extraction (RE) is an important information extraction task which provides essential information to many NLP applications such as knowledge base population and question answering. In this paper, we present a novel generative model…

Computation and Language · Computer Science 2022-03-01 Jian Ni , Gaetano Rossiello , Alfio Gliozzo , Radu Florian

Given comparative text, comparative relation extraction aims to extract two targets (\eg two cameras) in comparison and the aspect they are compared for (\eg image quality). The extracted comparative relations form the basis of further…

Computation and Language · Computer Science 2024-06-28 Yequan Wang , Hengran Zhang , Aixin Sun , Xuying Meng

Joint extraction of entities and relations from unstructured texts is a crucial task in information extraction. Recent methods achieve considerable performance but still suffer from some inherent limitations, such as redundancy of relation…

Computation and Language · Computer Science 2021-06-21 Hengyi Zheng , Rui Wen , Xi Chen , Yifan Yang , Yunyan Zhang , Ziheng Zhang , Ningyu Zhang , Bin Qin , Ming Xu , Yefeng Zheng

Though offering amazing contextualized token-level representations, current pre-trained language models actually take less attention on acquiring sentence-level representation during its self-supervised pre-training. If self-supervised…

Computation and Language · Computer Science 2022-10-24 Bohong Wu , Hai Zhao

Accurately modeling idiomatic or non-compositional language has been a longstanding challenge in Natural Language Processing (NLP). This is partly because these expressions do not derive their meanings solely from their constituent words,…

Computation and Language · Computer Science 2024-09-06 Wei He , Marco Idiart , Carolina Scarton , Aline Villavicencio

The recent demand for customized image generation raises a need for techniques that effectively extract the common concept from small sets of images. Existing methods typically rely on additional guidance, such as text prompts or spatial…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Minseo Kim , Minchan Kwon , Dongyeun Lee , Yunho Jeon , Junmo Kim

The joint entity and relation extraction task aims to extract all relational triples from a sentence. In essence, the relational triples contained in a sentence are unordered. However, previous seq2seq based models require to convert the…

Computation and Language · Computer Science 2020-11-06 Dianbo Sui , Yubo Chen , Kang Liu , Jun Zhao , Xiangrong Zeng , Shengping Liu

Search-based dialog models typically re-encode the dialog history at every turn, incurring high cost. Curved Contrastive Learning, a representation learning method that encodes relative distances between utterances into the embedding space…

Computation and Language · Computer Science 2024-07-16 Justus-Jonas Erker , Florian Mai , Nils Reimers , Gerasimos Spanakis , Iryna Gurevych

Relation triple extraction, which outputs a set of triples from long sentences, plays a vital role in knowledge acquisition. Large language models can accurately extract triples from simple sentences through few-shot learning or fine-tuning…

Computation and Language · Computer Science 2024-04-16 Zepeng Ding , Wenhao Huang , Jiaqing Liang , Deqing Yang , Yanghua Xiao

Current bundle generation studies focus on generating a combination of items to improve user experience. In real-world applications, there is also a great need to produce bundle creatives that consist of mixture types of objects (e.g.,…

Information Retrieval · Computer Science 2022-06-10 Penghui Wei , Shaoguo Liu , Xuanhua Yang , Liang Wang , Bo Zheng
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