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To extract robust deep representations from long sequential modeling of speech data, we propose a self-supervised learning approach, namely Contrastive Separative Coding (CSC). Our key finding is to learn such representations by separating…

音频与语音处理 · 电气工程与系统科学 2021-03-02 Jun Wang , Max W. Y. Lam , Dan Su , Dong Yu

Today's most accurate language models are trained on orders of magnitude more language data than human language learners receive - but with no supervision from other sensory modalities that play a crucial role in human learning. Can we make…

计算与语言 · 计算机科学 2024-03-22 Chengxu Zhuang , Evelina Fedorenko , Jacob Andreas

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

Graph contrastive learning (GCL) has been widely used as an effective self-supervised learning method for graph representation learning. However, how to apply adequate and stable graph augmentation to generating proper views for contrastive…

机器学习 · 计算机科学 2025-01-09 Yanchen Xu , Siqi Huang , Hongyuan Zhang , Xuelong Li

Selecting an appropriate response from many candidates given the utterances in a multi-turn dialogue is the key problem for a retrieval-based dialogue system. Existing work formalizes the task as matching between the utterances and a…

计算与语言 · 计算机科学 2022-03-03 Wentao Zhang , Shuang Xu , Haoran Huang

Pre-trained sequence-to-sequence language models have led to widespread success in many natural language generation tasks. However, there has been relatively less work on analyzing their ability to generate structured outputs such as…

计算与语言 · 计算机科学 2022-04-12 Swarnadeep Saha , Prateek Yadav , Mohit Bansal

Triple extraction is an essential task in information extraction for natural language processing and knowledge graph construction. In this paper, we revisit the end-to-end triple extraction task for sequence generation. Since generative…

计算与语言 · 计算机科学 2023-01-26 Hongbin Ye , Ningyu Zhang , Shumin Deng , Mosha Chen , Chuanqi Tan , Fei Huang , Huajun Chen

Graph contrastive learning (GCL) has recently emerged as a new concept which allows for capitalizing on the strengths of graph neural networks (GNNs) to learn rich representations in a wide variety of applications which involve abundant…

机器学习 · 计算机科学 2024-06-26 Yuzhou Chen , Jose Frias , Yulia R. Gel

Contrastive learning has become a popular approach in natural language processing, particularly for the learning of sentence embeddings. However, the discrete nature of natural language makes it difficult to ensure the quality of positive…

计算与语言 · 计算机科学 2023-05-23 Qinyuan Cheng , Xiaogui Yang , Tianxiang Sun , Linyang Li , Xipeng Qiu

The goal of text-to-image synthesis is to generate a visually realistic image that matches a given text description. In practice, the captions annotated by humans for the same image have large variance in terms of contents and the choice of…

机器学习 · 计算机科学 2021-11-30 Hui Ye , Xiulong Yang , Martin Takac , Rajshekhar Sunderraman , Shihao Ji

Recent Visual Question Answering (VQA) models have shown impressive performance on the VQA benchmark but remain sensitive to small linguistic variations in input questions. Existing approaches address this by augmenting the dataset with…

计算机视觉与模式识别 · 计算机科学 2021-04-20 Yash Kant , Abhinav Moudgil , Dhruv Batra , Devi Parikh , Harsh Agrawal

Recent works in Grammatical Error Correction (GEC) have leveraged the progress in Neural Machine Translation (NMT), to learn rewrites from parallel corpora of grammatically incorrect and corrected sentences, achieving state-of-the-art…

计算与语言 · 计算机科学 2020-10-07 Vipul Raheja , Dimitrios Alikaniotis

Contrastive learning models have achieved great success in unsupervised visual representation learning, which maximize the similarities between feature representations of different views of the same image, while minimize the similarities…

计算与语言 · 计算机科学 2022-01-13 Shusheng Xu , Xingxing Zhang , Yi Wu , Furu Wei

Text style transfer is a challenging text generation problem, which aims at altering the style of a given sentence to a target one while keeping its content unchanged. Since there is a natural scarcity of parallel datasets, recent works…

计算与语言 · 计算机科学 2022-02-02 Chenghao Fan , Ziao Li , Wei wei

Modern natural language processing (NLP) methods employ self-supervised pretraining objectives such as masked language modeling to boost the performance of various application tasks. These pretraining methods are frequently extended with…

计算与语言 · 计算机科学 2021-02-26 Nils Rethmeier , Isabelle Augenstein

Contrastive learning has recently established itself as a powerful self-supervised learning framework for extracting rich and versatile data representations. Broadly speaking, contrastive learning relies on a data augmentation scheme to…

机器学习 · 计算机科学 2023-05-02 Ilgee Hong , Huy Tran , Claire Donnat

Consider learning a generative model for time-series data. The sequential setting poses a unique challenge: Not only should the generator capture the conditional dynamics of (stepwise) transitions, but its open-loop rollouts should also…

机器学习 · 统计学 2023-11-03 Daniel Jarrett , Ioana Bica , Mihaela van der Schaar

Contrastive learning has been demonstrated to be effective in enhancing pre-trained language models (PLMs) to derive superior universal sentence embeddings. However, existing contrastive methods still have two limitations. Firstly, previous…

计算与语言 · 计算机科学 2022-10-11 Yuxin Jiang , Linhan Zhang , Wei Wang

Exemplar-based image translation establishes dense correspondences between a conditional input and an exemplar (from two different domains) for leveraging detailed exemplar styles to achieve realistic image translation. Existing work builds…

计算机视觉与模式识别 · 计算机科学 2022-04-04 Fangneng Zhan , Yingchen Yu , Rongliang Wu , Jiahui Zhang , Shijian Lu , Changgong Zhang

Neural dialogue response generation has gained much popularity in recent years. Maximum Likelihood Estimation (MLE) objective is widely adopted in existing dialogue model learning. However, models trained with MLE objective function are…

计算与语言 · 计算机科学 2020-10-14 Hengyi Cai , Hongshen Chen , Yonghao Song , Zhuoye Ding , Yongjun Bao , Weipeng Yan , Xiaofang Zhao