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In recent decades, the emergence of social networks has enabled internet service providers (e.g., Facebook, Twitter and Uber) to achieve great commercial success. Link prediction is recognized as a common practice to build the topology of…

社会与信息网络 · 计算机科学 2022-12-14 Song Mei , Cong Zhen

Crime has been previously explained by social characteristics of the residential population and, as stipulated by crime pattern theory, might also be linked to human movements of non-residential visitors. Yet a full empirical validation of…

计算机与社会 · 计算机科学 2020-04-20 Cristina Kadar , Stefan Feuerriegel , Anastasios Noulas , Cecilia Mascolo

Identifying current and future informal regions within cities remains a crucial issue for policymakers and governments in developing countries. The delineation process of identifying such regions in cities requires a lot of resources. While…

计算机与社会 · 计算机科学 2018-08-21 Mohamed R. Ibrahim , Helena Titheridge , Tao Cheng , James Haworth

Sparsity and missing data problems are very common in spatiotemporal traffic data collected from various sensing systems. Making accurate imputation is critical to many applications in intelligent transportation systems. In this paper, we…

机器学习 · 统计学 2020-06-12 Xinyu Chen , Jinming Yang , Lijun Sun

Recommender systems can change our life a lot and help us select suitable and favorite items much more conveniently and easily. As a consequence, various kinds of algorithms have been proposed in last few years to improve the performance.…

信息检索 · 计算机科学 2012-06-18 Jinhu Liu , Chengcheng Yang , Zi-Ke Zhang

Human mobility patterns refer to the regularities and trends in the way people move, travel, or navigate through different geographical locations over time. Detecting human mobility patterns is essential for a variety of applications,…

社会与信息网络 · 计算机科学 2023-05-23 Yisheng Alison Zheng , Abdallah Lakhdari , Amani Abusafia , Shing Tai Tony Lui , Athman Bouguettaya

We present a new algorithm for inferring the home location of Twitter users at different granularities, including city, state, time zone or geographic region, using the content of users tweets and their tweeting behavior. Unlike existing…

社会与信息网络 · 计算机科学 2014-03-11 Jalal Mahmud , Jeffrey Nichols , Clemens Drews

The development of positioning technologies has resulted in an increasing amount of mobility data being available. While bringing a lot of convenience to people's life, such availability also raises serious concerns about privacy. In this…

密码学与安全 · 计算机科学 2017-09-07 Michael Backes , Mathias Humbert , Jun Pang , Yang Zhang

Modern social platforms are characterized by the presence of rich user-behavior data associated with the publication, sharing and consumption of textual content. Users interact with content and with each other in a complex and dynamic…

社会与信息网络 · 计算机科学 2019-02-08 Adit Krishnan , Ashish Sharma , Hari Sundaram

In low and middle income countries, household surveys are a valuable source of information for a range of health and demographic indicators. Increasingly, subnational estimates are required for targeting interventions and evaluating…

统计方法学 · 统计学 2020-09-21 Katie Wilson , Jon Wakefield

Next location prediction is a key task in human mobility analysis, crucial for applications like smart city resource allocation and personalized navigation services. However, existing methods face two significant challenges: first, they…

机器学习 · 计算机科学 2025-09-16 Yuqian Wu , Yuhong Peng , Jiapeng Yu , Xiangyu Liu , Zeting Yan , Kang Lin , Weifeng Su , Bingqing Qu , Raymond Lee , Dingqi Yang

A location histogram is comprised of the number of times a user has visited locations as they move in an area of interest, and it is often obtained from the user in applications such as recommendation and advertising. However, a location…

密码学与安全 · 计算机科学 2019-12-03 Grigorios Loukides , George Theodorakopoulos

We introduce a detection framework for dense crowd counting and eliminate the need for the prevalent density regression paradigm. Typical counting models predict crowd density for an image as opposed to detecting every person. These…

计算机视觉与模式识别 · 计算机科学 2020-02-18 Deepak Babu Sam , Skand Vishwanath Peri , Mukuntha Narayanan Sundararaman , Amogh Kamath , R. Venkatesh Babu

Inductive spatial temporal prediction can generalize historical data to predict unseen data, crucial for highly dynamic scenarios (e.g., traffic systems, stock markets). However, external events (e.g., urban structural growth, market crash)…

机器学习 · 计算机科学 2024-09-23 Jialun Zheng , Divya Saxena , Jiannong Cao , Hanchen Yang , Penghui Ruan

With the growing demand for latency-critical and computation-intensive Internet of Things (IoT) services, the IoT-oriented network architecture, mobile edge computing (MEC), has emerged as a promising technique to reinforce the computation…

信息论 · 计算机科学 2022-08-09 Jiechen Chen , Hong Xing , Xiaohui Lin , Arumugam Nallanathan , Suzhi Bi

The rise of In-Context Learning (ICL) for universal medical image segmentation has introduced an unprecedented demand for large-scale, diverse datasets for training, exacerbating the long-standing problem of data scarcity. While data…

计算机视觉与模式识别 · 计算机科学 2025-09-25 Jiesi Hu , Yanwu Yang , Zhiyu Ye , Chenfei Ye , Hanyang Peng , Jianfeng Cao , Ting Ma

As an important task for the management of bike sharing systems, accurate forecast of travel demand could facilitate dispatch and relocation of bicycles to improve user satisfaction. In recent years, many deep learning algorithms have been…

人工智能 · 计算机科学 2022-02-14 Xinyu Li , Yang Xu , Xiaohu Zhang , Wenzhong Shi , Yang Yue , Qingquan Li

Spatiotemporal data consisting of timestamps, GPS coordinates, and IDs occurs in many settings. Modeling approaches for this type of data must address challenges in terms of sensor noise, uneven sampling rates, and non-persistent IDs. In…

统计方法学 · 统计学 2024-10-10 Pranay Pherwani , Nicholas Hass , Anna K. Yanchenko

Users' locations are important for many applications such as personalized search and localized content delivery. In this paper, we study the problem of profiling Twitter users' locations with their following network and tweets. We propose a…

数据库 · 计算机科学 2012-08-02 Rui Li , Shengjie Wang , Kevin Chen-Chuan Chang

Image geolocalization, the task of determining an image's geographic origin, poses significant challenges, largely due to visual similarities across disparate locations and the large search space. To address these issues, we propose a…

计算机视觉与模式识别 · 计算机科学 2025-11-04 Narges Ghasemi , Amir Ziashahabi , Salman Avestimehr , Cyrus Shahabi