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The recent progress in multi-agent deep reinforcement learning(MADRL) makes it more practical in real-world tasks, but its relatively poor scalability and the partially observable constraints raise challenges to its performance and…

机器学习 · 计算机科学 2021-09-07 Zhenhui Ye , Xiaohong Jiang , Guanghua Song , Bowei Yang

Many machine learning methods have been proposed to achieve accurate transaction fraud detection, which is essential to the financial security of individuals and banks. However, most existing methods leverage original features only or…

机器学习 · 计算机科学 2023-07-13 Yue Tian , Guanjun Liu , Jiacun Wang , Mengchu Zhou

The ISO standard Property Graph model has become increasingly popular for representing complex, interconnected data. However, it lacks native support for querying metadata and reification, which limits its abilities to deal with the demands…

数据库 · 计算机科学 2025-12-16 Sepehr Sadoughi , Nikolay Yakovets , George Fletcher

Recent years have witnessed increasing interest in few-shot knowledge graph completion (FKGC), which aims to infer unseen query triples for a few-shot relation using a few reference triples about the relation. The primary focus of existing…

计算与语言 · 计算机科学 2022-09-28 Yuling Li , Kui Yu , Yuhong Zhang , Xindong Wu

Relevance modeling aims to locate desirable items for corresponding queries, which is crucial for search engines to ensure user experience. Although most conventional approaches address this problem by assessing the semantic similarity…

信息检索 · 计算机科学 2023-10-25 Zeyuan Chen , Wei Chen , Jia Xu , Zhongyi Liu , Wei Zhang

Graph-based Retrieval-Augmented Generation (RAG) has shown great capability in enhancing Large Language Model (LLM)'s answer with an external knowledge base. Compared to traditional RAG, it introduces a graph as an intermediate…

信息检索 · 计算机科学 2025-06-18 Ke Wang , Bo Pan , Yingchaojie Feng , Yuwei Wu , Jieyi Chen , Minfeng Zhu , Wei Chen

A vehicle driving along the road is surrounded by many objects, but only a small subset of them influence the driver's decisions and actions. Learning to estimate the importance of each object on the driver's real-time decision-making may…

计算机视觉与模式识别 · 计算机科学 2020-03-16 Zehua Zhang , Ashish Tawari , Sujitha Martin , David Crandall

Recently, Retrieval-Augmented Generation (RAG) has achieved remarkable success in addressing the challenges of Large Language Models (LLMs) without necessitating retraining. By referencing an external knowledge base, RAG refines LLM…

人工智能 · 计算机科学 2024-09-11 Boci Peng , Yun Zhu , Yongchao Liu , Xiaohe Bo , Haizhou Shi , Chuntao Hong , Yan Zhang , Siliang Tang

Sequential recommendation (SR) is to accurately recommend a list of items for a user based on her current accessed ones. While new-coming users continuously arrive in the real world, one crucial task is to have inductive SR that can produce…

信息检索 · 计算机科学 2021-02-01 Cheng Hsu , Cheng-Te Li

Scene Graph Generation (SGG) is a task that encodes visual relationships between objects in images as graph structures. SGG shows significant promise as a foundational component for downstream tasks, such as reasoning for embodied agents.…

计算机视觉与模式识别 · 计算机科学 2025-09-24 Maëlic Neau , Paulo E. Santos , Anne-Gwenn Bosser , Cédric Buche , Akihiro Sugimoto

Neighbor-based collaborative ranking (NCR) techniques follow three consecutive steps to recommend items to each target user: first they calculate the similarities among users, then they estimate concordance of pairwise preferences to the…

信息检索 · 计算机科学 2018-11-06 Bita Shams , Saman Haratizadeh

Landmarks have long played a pivotal role in automated planning, serving as crucial elements for improving the planning algorithms. The main limitation of classical landmark extraction methods is their sensitivity to specific planning…

人工智能 · 计算机科学 2025-09-23 Cristian Pérez-Corral , Antonio Garrido , Laura Sebastia

Item neighbourhood methods for collaborative filtering learn a weighted graph over the set of items, where each item is connected to those it is most similar to. The prediction of a user's rating on an item is then given by that rating of…

机器学习 · 计算机科学 2012-06-22 Aaron Defazio , Tiberio Caetano

Adversarial object rearrangement in the real world (e.g., previously unseen or oversized items in kitchens and stores) could benefit from understanding task scenes, which inherently entail heterogeneous components such as current objects,…

机器人学 · 计算机科学 2023-09-28 Xibai Lou , Houjian Yu , Ross Worobel , Yang Yang , Changhyun Choi

In pattern recognition or machine learning, it is a very fundamental task to find nearest neighbors of a given point. All the methods for the task work basically by comparing the given point to all the points in the data set. That is why…

机器学习 · 计算机科学 2019-12-10 Hayoung Um , Heeyoul Choi

In processing human produced text using natural language processing (NLP) techniques, two fundamental subtasks that arise are (i) segmentation of the plain text into meaningful subunits (e.g., entities), and (ii) dependency parsing, to…

计算与语言 · 计算机科学 2018-03-20 Giannis Bekoulis , Johannes Deleu , Thomas Demeester , Chris Develder

Graphs are essential for modeling complex relationships and capturing structured interactions in data. Graph Neural Networks (GNNs) are particularly effective when such relational structure is explicitly available, but many real-world…

图形学 · 计算机科学 2026-03-02 Haozhe Chen , Soheila Farokhi , Kelvyn Bladen , Hamid Karimi , Kevin R. Moon

The majority of data scientists and machine learning practitioners use relational data in their work [State of ML and Data Science 2017, Kaggle, Inc.]. But training machine learning models on data stored in relational databases requires…

机器学习 · 计算机科学 2020-02-07 Milan Cvitkovic

Entity alignment is the task of linking entities with the same real-world identity from different knowledge graphs (KGs), which has been recently dominated by embedding-based methods. Such approaches work by learning KG representations so…

计算与语言 · 计算机科学 2019-08-23 Yuting Wu , Xiao Liu , Yansong Feng , Zheng Wang , Rui Yan , Dongyan Zhao

Knowledge graph embedding methods learn embeddings of entities and relations in a low dimensional space which can be used for various downstream machine learning tasks such as link prediction and entity matching. Various graph convolutional…

机器学习 · 计算机科学 2021-02-16 Nasrullah Sheikh , Xiao Qin , Berthold Reinwald , Christoph Miksovic , Thomas Gschwind , Paolo Scotton