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Sequential recommender systems (SRSs) aim to predict the subsequent items which may interest users via comprehensively modeling users' complex preference embedded in the sequence of user-item interactions. However, most of existing SRSs…

Information Retrieval · Computer Science 2024-10-31 Chengkai Huang , Shoujin Wang , Xianzhi Wang , Lina Yao

We introduce a simple yet effective method of integrating contextual embeddings with commonsense graph embeddings, dubbed BERT Infused Graphs: Matching Over Other embeDdings. First, we introduce a preprocessing method to improve the speed…

Computation and Language · Computer Science 2019-10-18 Jeff Da

Recommender systems increasingly incorporate textual reviews to enrich user and item representations. However, most review-aware models remain optimized for rating prediction rather than ranking quality. This misalignment limits their…

Sequential recommendation methods are increasingly important in cutting-edge recommender systems. Through leveraging historical records, the systems can capture user interests and perform recommendations accordingly. State-of-the-art…

Information Retrieval · Computer Science 2023-08-10 Chong Liu , Xiaoyang Liu , Rongqin Zheng , Lixin Zhang , Xiaobo Liang , Juntao Li , Lijun Wu , Min Zhang , Leyu Lin

Despite their promising performance across various natural language processing (NLP) tasks, current NLP systems are vulnerable to textual adversarial attacks. To defend against these attacks, most existing methods apply adversarial training…

Computation and Language · Computer Science 2023-07-06 Junjie Wu , Dit-Yan Yeung

Contrastive learning has achieved remarkable success in self-supervised representation learning, often guided by information-theoretic objectives such as mutual information maximization. Motivated by the limitations of static augmentations…

Machine Learning · Computer Science 2026-03-16 Jiansong Zhang , Zhuoqin Yang , Xu Wu , Xiaoling Luo , Peizhong Liu , Linlin Shen

Selecting radiology examination protocol is a repetitive, and time-consuming process. In this paper, we present a deep learning approach to automatically assign protocols to computer tomography examinations, by pre-training a…

Computation and Language · Computer Science 2021-07-08 Wilson Lau , Laura Aaltonen , Martin Gunn , Meliha Yetisgen

The purpose of the study is to investigate the relative effectiveness of four different sentiment analysis techniques: (1) unsupervised lexicon-based model using Sent WordNet; (2) traditional supervised machine learning model using logistic…

Computation and Language · Computer Science 2020-07-03 Shivaji Alaparthi , Manit Mishra

Multilingual BERT (mBERT), XLM-RoBERTa (XLMR) and other unsupervised multilingual encoders can effectively learn cross-lingual representation. Explicit alignment objectives based on bitexts like Europarl or MultiUN have been shown to…

Computation and Language · Computer Science 2020-10-07 Shijie Wu , Mark Dredze

The current state-of-the-art task-oriented semantic parsing models use BERT or RoBERTa as pretrained encoders; these models have huge memory footprints. This poses a challenge to their deployment for voice assistants such as Amazon Alexa…

Computation and Language · Computer Science 2020-10-13 Prafull Prakash , Saurabh Kumar Shashidhar , Wenlong Zhao , Subendhu Rongali , Haidar Khan , Michael Kayser

Instance-level contrastive learning techniques, which rely on data augmentation and a contrastive loss function, have found great success in the domain of visual representation learning. They are not suitable for exploiting the rich…

Computer Vision and Pattern Recognition · Computer Science 2021-10-22 Martine Toering , Ioannis Gatopoulos , Maarten Stol , Vincent Tao Hu

Contrastive self-supervised learning methods famously produce high quality transferable representations by learning invariances to different data augmentations. Invariances established during pre-training can be interpreted as strong…

Computer Vision and Pattern Recognition · Computer Science 2023-04-05 Ruchika Chavhan , Henry Gouk , Jan Stuehmer , Calum Heggan , Mehrdad Yaghoobi , Timothy Hospedales

Efficient document retrieval heavily relies on the technique of semantic hashing, which learns a binary code for every document and employs Hamming distance to evaluate document distances. However, existing semantic hashing methods are…

Information Retrieval · Computer Science 2022-11-01 Zexuan Qiu , Qinliang Su , Jianxing Yu , Shijing Si

Trained classification models can unintentionally lead to biased representations and predictions, which can reinforce societal preconceptions and stereotypes. Existing debiasing methods for classification models, such as adversarial…

Computation and Language · Computer Science 2021-09-23 Aili Shen , Xudong Han , Trevor Cohn , Timothy Baldwin , Lea Frermann

We introduce Three Towers (3T), a flexible method to improve the contrastive learning of vision-language models by incorporating pretrained image classifiers. While contrastive models are usually trained from scratch, LiT (Zhai et al.,…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Jannik Kossen , Mark Collier , Basil Mustafa , Xiao Wang , Xiaohua Zhai , Lucas Beyer , Andreas Steiner , Jesse Berent , Rodolphe Jenatton , Efi Kokiopoulou

We introduce a self-supervised approach for learning node and graph level representations by contrasting structural views of graphs. We show that unlike visual representation learning, increasing the number of views to more than two or…

Machine Learning · Computer Science 2020-06-11 Kaveh Hassani , Amir Hosein Khasahmadi

In this work, we represent CMV-BERT, which improves the pretraining of a language model via two ingredients: (a) contrastive learning, which is well studied in the area of computer vision; (b) multiple vocabularies, one of which is…

Computation and Language · Computer Science 2021-06-01 Wei Zhu , Daniel Cheung

For many computer vision applications such as image captioning, visual question answering, and person search, learning discriminative feature representations at both image and text level is an essential yet challenging problem. Its…

Computer Vision and Pattern Recognition · Computer Science 2019-08-29 Nikolaos Sarafianos , Xiang Xu , Ioannis A. Kakadiaris

Domain adaptation or transfer learning using pre-trained language models such as BERT has proven to be an effective approach for many natural language processing tasks. In this work, we propose to formulate word sense disambiguation as a…

Computation and Language · Computer Science 2020-10-02 Boon Peng Yap , Andrew Koh , Eng Siong Chng

Objective: Biomedical Knowledge Graphs play a pivotal role in various biomedical research domains. Concurrently, term clustering emerges as a crucial step in constructing these knowledge graphs, aiming to identify synonymous terms. Due to a…

Computation and Language · Computer Science 2023-12-14 Huaiyuan Ying , Zhengyun Zhao , Yang Zhao , Sihang Zeng , Sheng Yu