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Existing dynamic weighted graph visualization approaches rely on users' mental comparison to perceive temporal evolution of dynamic weighted graphs, hindering users from effectively analyzing changes across multiple timeslices. We propose…

人机交互 · 计算机科学 2023-02-16 Xiaolin Wen , Yong Wang , Meixuan Wu , Fengjie Wang , Xuanwu Yue , Qiaomu Shen , Yuxin Ma , Min Zhu

In this paper, we propose the DN-tree that is a data structure to build lossy summaries of the frequent data access patterns of the queries in a distributed graph data management system. These compact representations allow us an efficient…

As graph analytics often involves compute-intensive operations, GPUs have been extensively used to accelerate the processing. However, in many applications such as social networks, cyber security, and fraud detection, their representative…

数据结构与算法 · 计算机科学 2018-06-28 Mo Sha , Yuchen Li , Bingsheng He , Kian-Lee Tan

In recent years, the emergence and development of third-party platforms have greatly facilitated the growth of the Online to Offline (O2O) business. However, the large amount of transaction data raises new challenges for retailers,…

机器学习 · 计算机科学 2022-05-24 Xu Chen , Qiu Qiu , Changshan Li , Kunqing Xie

We introduce Griffin, the first foundation model attemptation designed specifically for Relational Databases (RDBs). Unlike previous smaller models focused on single RDB tasks, Griffin unifies the data encoder and task decoder to handle…

机器学习 · 计算机科学 2025-06-12 Yanbo Wang , Xiyuan Wang , Quan Gan , Minjie Wang , Qibin Yang , David Wipf , Muhan Zhang

Graph-based indexes have been widely employed to accelerate approximate similarity search of high-dimensional vectors. However, the performance of graph indexes to answer different queries varies vastly, leading to an unstable quality of…

数据库 · 计算机科学 2024-08-27 Zeyu Wang , Qitong Wang , Xiaoxing Cheng , Peng Wang , Themis Palpanas , Wei Wang

Most of the textual information available to us are temporally variable. In a world where information is dynamic, time-stamping them is a very important task. Documents are a good source of information and are used for many tasks like,…

计算与语言 · 计算机科学 2021-06-29 Swayambhu Nath Ray

Graphs are a fundamental abstraction for modeling relational data. However, graphs are discrete and combinatorial in nature, and learning representations suitable for machine learning tasks poses statistical and computational challenges. In…

机器学习 · 统计学 2019-05-16 Aditya Grover , Aaron Zweig , Stefano Ermon

Bitcoin, as one of the most popular cryptocurrency, is recently attracting much attention of investors. Bitcoin price prediction task is consequently a rising academic topic for providing valuable insights and suggestions. Existing bitcoin…

统计金融 · 定量金融 2020-08-25 Xiao Li , Weili Wu

Graph Neural Networks (GNNs) have shown significant promise in various domains, such as recommendation systems, bioinformatics, and network analysis. However, the irregularity of graph data poses unique challenges for efficient computation,…

机器学习 · 计算机科学 2024-11-26 Pol Puigdemont , Enrico Russo , Axel Wassington , Abhijit Das , Sergi Abadal , Maurizio Palesi

Smart contracts have enabled blockchain systems to evolve from simple cryptocurrency platforms, such as Bitcoin, to general transactional systems, such as Ethereum. Catering for emerging business requirements, a new architecture called…

分布式、并行与集群计算 · 计算机科学 2020-03-24 Pingcheng Ruan , Dumitrel Loghin , Quang-Trung Ta , Meihui Zhang , Gang Chen , Beng Chin Ooi

Graphs in many applications, such as social networks and IoT, are inherently streaming, involving continuous additions and deletions of vertices and edges at high rates. Constructing random walks in a graph, i.e., sequences of vertices…

数据库 · 计算机科学 2022-09-14 Serafeim Papadias , Zoi Kaoudi , Jorge-Arnulfo Quiane-Ruiz , Volker Markl

In many real world networks, a vertex is usually associated with a transaction database that comprehensively describes the behaviour of the vertex. A typical example is the social network, where the behaviour of every user is depicted by a…

数据库 · 计算机科学 2018-05-10 Mingtao Lei , Lingyang Chu , Zhefeng Wang

Numerous studies have been conducted to investigate the properties of large-scale temporal graphs. Despite the ubiquity of these graphs in real-world scenarios, it's usually impractical for us to obtain the whole real-time graphs due to…

人工智能 · 计算机科学 2023-10-20 Zhen Zhang , Bingqiao Luo , Shengliang Lu , Bingsheng He

There is a growing need for distributed graph processing systems that are capable of gracefully scaling to very large graph datasets. Unfortunately, this challenge has not been easily met due to the intense memory pressure imposed by…

数据库 · 计算机科学 2014-07-03 Yingyi Bu , Vinayak Borkar , Jianfeng Jia , Michael J. Carey , Tyson Condie

Graph-based approximate nearest neighbor search has attracted more and more attentions due to its online search advantages. Numbers of methods studying the enhancement of speed and recall have been put forward. However, few of them focus on…

信息检索 · 计算机科学 2021-02-10 Kang Zhao , Pan Pan , Yun Zheng , Yanhao Zhang , Changxu Wang , Yingya Zhang , Yinghui Xu , Rong Jin

Graph databases (GDB) have recently been arisen to overcome the limits of traditional databases for storing and managing data with graph-like structure. Today, they represent a requirement for many applications that manage graph-like data,…

数据库 · 计算机科学 2016-09-08 Ali Ben Ammar

One of the key problems in Retrieval-augmented generation (RAG) systems is that chunk-based retrieval pipelines represent the source chunks as atomic objects, mixing the information contained within such a chunk into a single vector. These…

Graph convolutional neural network provides good solutions for node classification and other tasks with non-Euclidean data. There are several graph convolutional models that attempt to develop deep networks but do not cause serious…

机器学习 · 计算机科学 2021-02-22 Jingyi Wang , Zhidong Deng

Real world graphs are often dynamic and evolve over time. It is crucial for storing and querying graph evolution in graph databases. However, existing works either suffer from high storage overhead or lack efficient temporal query support,…

数据库 · 计算机科学 2024-04-02 Jiamin Hou , Zhanhao Zhao , Zhouyu Wang , Wei Lu , Guodong Jin , Dong Wen , Xiaoyong Du