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Technique of emotion recognition enables computers to classify human affective states into discrete categories. However, the emotion may fluctuate instead of maintaining a stable state even within a short time interval. There is also a…

信号处理 · 电气工程与系统科学 2022-08-24 Yiwen Zhu , Kaiyu Gan , Zhong Yin

As cyber threats grow increasingly sophisticated, reinforcement learning (RL) is emerging as a promising technique to create intelligent and adaptive cyber defense systems. However, most existing autonomous defensive agents have overlooked…

机器学习 · 计算机科学 2025-04-17 Ilya Orson Sandoval , Isaac Symes Thompson , Vasilios Mavroudis , Chris Hicks

Obtaining a single-vector representation from a Large Language Model's (LLM) token-level outputs is a critical step for nearly all sentence-level tasks. However, standard pooling methods like mean or max aggregation treat tokens as an…

机器学习 · 计算机科学 2026-03-05 Krishna Sri Ipsit Mantri , Carola-Bibiane Schönlieb , Zorah Lähner , Moshe Eliasof

Gait recognition is a promising biometric technology for identification due to its non-invasiveness and long-distance. However, external variations such as clothing changes and viewpoint differences pose significant challenges to gait…

计算机视觉与模式识别 · 计算机科学 2023-08-28 Yan Sun , Xueling Feng , Liyan Ma , Long Hu , Mark Nixon

Social Networks represent one of the most important online sources to share content across a world-scale audience. In this context, predicting whether a post will have any impact in terms of engagement is of crucial importance to drive the…

社会与信息网络 · 计算机科学 2023-06-21 Marco Arazzi , Marco Cotogni , Antonino Nocera , Luca Virgili

Heterogeneous graph learning aims to capture complex relationships and diverse relational semantics among entities in a heterogeneous graph to obtain meaningful representations for nodes and edges. Recent advancements in heterogeneous graph…

计算与语言 · 计算机科学 2024-05-21 Jiabin Tang , Yuhao Yang , Wei Wei , Lei Shi , Long Xia , Dawei Yin , Chao Huang

As a structured representation of the image content, the visual scene graph (visual relationship) acts as a bridge between computer vision and natural language processing. Existing models on the scene graph generation task notoriously…

计算机视觉与模式识别 · 计算机科学 2022-03-01 Yuyu Guo , Jingkuan Song , Lianli Gao , Heng Tao Shen

This paper presents SYBILGAT, a novel approach to Sybil detection in social networks using Graph Attention Networks (GATs). Traditional methods for Sybil detection primarily leverage structural properties of networks; however, they tend to…

社会与信息网络 · 计算机科学 2024-09-16 Stuart Heeb , Andreas Plesner , Roger Wattenhofer

Recently, pre-trained language representation models such as bidirectional encoder representations from transformers (BERT) have been performing well in commonsense question answering (CSQA). However, there is a problem that the models do…

计算与语言 · 计算机科学 2022-11-15 Byeongmin Choi , YongHyun Lee , Yeunwoong Kyung , Eunchan Kim

In this paper, we propose MGNet, a simple and effective multiplex graph convolutional network (GCN) model for multimodal brain network analysis. The proposed method integrates tensor representation into the multiplex GCN model to extract…

计算机视觉与模式识别 · 计算机科学 2021-08-03 Zhaoming Kong , Lichao Sun , Hao Peng , Liang Zhan , Yong Chen , Lifang He

Detection of malicious behavior in a large network is a challenging problem for machine learning in computer security, since it requires a model with high expressive power and scalable inference. Existing solutions struggle to achieve this…

机器学习 · 计算机科学 2024-08-08 Simon Mandlik , Tomas Pevny , Vaclav Smidl , Lukas Bajer

Large Language Models (LLMs) have shown remarkable capabilities across various domains, yet they struggle with knowledge-intensive tasks in areas that demand factual accuracy, e.g. industrial automation and healthcare. Key limitations…

机器学习 · 计算机科学 2025-09-10 Michael Banf , Johannes Kuhn

Entity synonyms discovery is crucial for entity-leveraging applications. However, existing studies suffer from several critical issues: (1) the input mentions may be out-of-vocabulary (OOV) and may come from a different semantic space of…

人工智能 · 计算机科学 2021-04-02 Yiying Yang , Xi Yin , Haiqin Yang , Xingjian Fei , Hao Peng , Kaijie Zhou , Kunfeng Lai , Jianping Shen

Contextualized entity representations learned by state-of-the-art transformer-based language models (TLMs) like BERT, GPT, T5, etc., leverage the attention mechanism to learn the data context from training data corpus. However, these models…

计算与语言 · 计算机科学 2021-09-06 Keyur Faldu , Amit Sheth , Prashant Kikani , Hemang Akbari

Interpretable graph learning is in need as many scientific applications depend on learning models to collect insights from graph-structured data. Previous works mostly focused on using post-hoc approaches to interpret pre-trained models…

机器学习 · 计算机科学 2022-06-20 Siqi Miao , Miaoyuan Liu , Pan Li

The remarkable progress of network embedding has led to state-of-the-art algorithms in recommendation. However, the sparsity of user-item interactions (i.e., explicit preferences) on websites remains a big challenge for predicting users'…

信息检索 · 计算机科学 2019-07-30 Jun Zhao , Zhou Zhou , Ziyu Guan , Wei Zhao , Wei Ning , Guang Qiu , Xiaofei He

Click-through rate prediction is a critical task in online advertising. Currently, many existing methods attempt to extract user potential interests from historical click behavior sequences. However, it is difficult to handle sparse user…

人工智能 · 计算机科学 2022-02-08 Wensen Jiang , Yizhu Jiao , Qingqin Wang , Chuanming Liang , Lijie Guo , Yao Zhang , Zhijun Sun , Yun Xiong , Yangyong Zhu

Most knowledge graph completion (KGC) methods learn latent representations of entities and relations of a given graph by mapping them into a vector space. Although the majority of these methods focus on static knowledge graphs, a large…

机器学习 · 计算机科学 2023-09-29 Duygu Sezen Islakoglu , Mel Chekol , Yannis Velegrakis

Online social media works as a source of various valuable and actionable information during disasters. These information might be available in multiple languages due to the nature of user generated content. An effective system to…

计算与语言 · 计算机科学 2022-03-08 Samujjwal Ghosh , Subhadeep Maji , Maunendra Sankar Desarkar

Recommendation systems aim to provide users with relevant suggestions, but often lack interpretability and fail to capture higher-level semantic relationships between user behaviors and profiles. In this paper, we propose a novel approach…