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Supervised learning in Neural Machine Translation (NMT) typically follows a teacher forcing paradigm where reference tokens constitute the conditioning context in the model's prediction, instead of its own previous predictions. In order to…

Computation and Language · Computer Science 2023-07-18 Nathaniel Berger , Miriam Exel , Matthias Huck , Stefan Riezler

In contemporary self-supervised contrastive algorithms like SimCLR, MoCo, etc., the task of balancing attraction between two semantically similar samples and repulsion between two samples of different classes is primarily affected by the…

Machine Learning · Computer Science 2024-05-13 Siladittya Manna , Soumitri Chattopadhyay , Rakesh Dey , Saumik Bhattacharya , Umapada Pal

A prominent technique for self-supervised representation learning has been to contrast semantically similar and dissimilar pairs of samples. Without access to labels, dissimilar (negative) points are typically taken to be randomly sampled…

Machine Learning · Computer Science 2020-10-22 Ching-Yao Chuang , Joshua Robinson , Lin Yen-Chen , Antonio Torralba , Stefanie Jegelka

The two-tower architecture has been widely applied for learning item and user representations, which is important for large-scale recommender systems. Many two-tower models are trained using various in-batch negative sampling strategies,…

Information Retrieval · Computer Science 2021-10-29 Jinpeng Wang , Jieming Zhu , Xiuqiang He

Contrastive learning has become a popular technique to pre-train image encoders, which could be used to build various downstream classification models in an efficient way. This process requires a large amount of data and computation…

Computer Vision and Pattern Recognition · Computer Science 2022-01-21 Yutong Wu , Han Qiu , Tianwei Zhang , Jiwei L , Meikang Qiu

Word alignment has proven to benefit many-to-many neural machine translation (NMT). However, high-quality ground-truth bilingual dictionaries were used for pre-editing in previous methods, which are unavailable for most language pairs.…

Computation and Language · Computer Science 2022-04-27 Zhuoyuan Mao , Chenhui Chu , Raj Dabre , Haiyue Song , Zhen Wan , Sadao Kurohashi

This paper proposes a method for representation learning of multimodal data using contrastive losses. A traditional approach is to contrast different modalities to learn the information shared between them. However, that approach could fail…

Computer Vision and Pattern Recognition · Computer Science 2021-07-07 Yunze Liu , Qingnan Fan , Shanghang Zhang , Hao Dong , Thomas Funkhouser , Li Yi

Neighbor embedding methods $t$-SNE and UMAP are the de facto standard for visualizing high-dimensional datasets. Motivated from entirely different viewpoints, their loss functions appear to be unrelated. In practice, they yield strongly…

Machine Learning · Computer Science 2024-06-06 Sebastian Damrich , Jan Niklas Böhm , Fred A. Hamprecht , Dmitry Kobak

Supervised contrastive learning (SupCon) has proven to be a powerful alternative to the standard cross-entropy loss for classification of multi-class balanced datasets. However, it struggles to learn well-conditioned representations of…

Machine Learning · Computer Science 2025-03-24 David Mildenberger , Paul Hager , Daniel Rueckert , Martin J Menten

Recently, contrastive learning has achieved great results in self-supervised learning, where the main idea is to push two augmentations of an image (positive pairs) closer compared to other random images (negative pairs). We argue that not…

Computer Vision and Pattern Recognition · Computer Science 2021-09-13 Ajinkya Tejankar , Soroush Abbasi Koohpayegani , Vipin Pillai , Paolo Favaro , Hamed Pirsiavash

Neural machine translation benefits from semantically rich representations. Considerable progress in learning such representations has been achieved by language modelling and mutual information maximization objectives using contrastive…

Computation and Language · Computer Science 2024-01-09 Kshitij Ambilduke , Aneesh Shetye , Diksha Bagade , Rishika Bhagwatkar , Khurshed Fitter , Prasad Vagdargi , Shital Chiddarwar

To solve video-and-language grounding tasks, the key is for the network to understand the connection between the two modalities. For a pair of video and language description, their semantic relation is reflected by their encodings'…

Computer Vision and Pattern Recognition · Computer Science 2023-02-28 Yubo Zhang , Feiyang Niu , Qing Ping , Govind Thattai

Retrieval-augmented Neural Machine Translation models have been successful in many translation scenarios. Different from previous works that make use of mutually similar but redundant translation memories~(TMs), we propose a new…

Computation and Language · Computer Science 2022-12-07 Xin Cheng , Shen Gao , Lemao Liu , Dongyan Zhao , Rui Yan

Contrastive learning (CL) methods effectively learn data representations in a self-supervision manner, where the encoder contrasts each positive sample over multiple negative samples via a one-vs-many softmax cross-entropy loss. By…

Machine Learning · Computer Science 2023-08-16 Huangjie Zheng , Xu Chen , Jiangchao Yao , Hongxia Yang , Chunyuan Li , Ya Zhang , Hao Zhang , Ivor Tsang , Jingren Zhou , Mingyuan Zhou

Pre-trained code models have emerged as the state-of-the-art paradigm for code search tasks. The paradigm involves pre-training the model on search-irrelevant tasks such as masked language modeling, followed by the fine-tuning stage, which…

Software Engineering · Computer Science 2024-11-25 Hande Dong , Jiayi Lin , Yanlin Wang , Yichong Leng , Jiawei Chen , Yutao Xie

A great challenge in speaker representation learning using deep models is to design learning objectives that can enhance the discrimination of unseen speakers under unseen domains. This work proposes a supervised contrastive learning…

Audio and Speech Processing · Electrical Eng. & Systems 2022-11-18 Zhe Li , Man-Wai Mak

Neural network based speech recognition systems suffer from performance degradation due to accented speech, especially unfamiliar accents. In this paper, we study the supervised contrastive learning framework for accented speech…

Sound · Computer Science 2021-07-05 Tao Han , Hantao Huang , Ziang Yang , Wei Han

This paper finds that contrastive learning can produce superior sentence embeddings for pre-trained models but is also vulnerable to backdoor attacks. We present the first backdoor attack framework, BadCSE, for state-of-the-art sentence…

Computation and Language · Computer Science 2022-10-21 Xiaoyi Chen , Baisong Xin , Shengfang Zhai , Shiqing Ma , Qingni Shen , Zhonghai Wu

Any city-scale visual localization system has to overcome long-term appearance changes, such as varying illumination conditions or seasonal changes between query and database images. Since semantic content is more robust to such changes, we…

Computer Vision and Pattern Recognition · Computer Science 2022-04-01 Semih Orhan , Jose J. Guerrero , Yalin Bastanlar

Learning by contrasting positive and negative samples is a general strategy adopted by many methods. Noise contrastive estimation (NCE) for word embeddings and translating embeddings for knowledge graphs are examples in NLP employing this…

Computation and Language · Computer Science 2018-08-06 Avishek Joey Bose , Huan Ling , Yanshuai Cao
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