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Advancing large language models (LLMs) for the next point-of-interest (POI) recommendation task faces two fundamental challenges: (i) although existing methods produce semantic IDs that incorporate semantic information, their topology-blind…

信息检索 · 计算机科学 2026-03-13 Peibo Li , Shuang Ao , Hao Xue , Yang Song , Maarten de Rijke , Johan Barthélemy , Tomasz Bednarz , Flora D. Salim

In this paper, we propose and study the problem of top-m rank aggregation of spatial objects in streaming queries, where, given a set of objects O, a stream of spatial queries (kNN or range), the goal is to report m objects with the highest…

数据库 · 计算机科学 2016-10-24 Farhana M. Choudhury , Zhifeng Bao , J. Shane Culpepper , Timos Sellis

Point of interest (POI) recommendation can play a pivotal role in enriching tourists' experiences by suggesting context-dependent and preference-matching locations and activities, such as restaurants, landmarks, itineraries, and cultural…

信息检索 · 计算机科学 2026-05-28 Alejandro Bellogín , Linus W. Dietz , Francesco Ricci , Pablo Sánchez

User preference queries are very important in spatial databases. With the help of these queries, one can found best location among points saved in database. In many situation users evaluate quality of a location with its distance from its…

数据库 · 计算机科学 2011-12-13 Nasrin Mazaheri Soudani , Ahmad Baraani-Dastgerdi

Recognizing precise geometrical configurations of groups of objects is a key capability of human spatial cognition, yet little studied in the deep learning literature so far. In particular, a fundamental problem is how a machine can learn…

机器学习 · 计算机科学 2020-07-20 Laetitia Teodorescu , Katja Hofmann , Pierre-Yves Oudeyer

In Location-based Social Networks, Point-of-Interest (POI) recommendation helps users discover interesting places. There is a trend to move from the cloud-based model to on-device recommendations for privacy protection and reduced server…

信息检索 · 计算机科学 2024-01-26 Ruiqi Zheng , Liang Qu , Tong Chen , Lizhen Cui , Yuhui Shi , Hongzhi Yin

Spatial representations that capture both structural and semantic characteristics of urban environments are essential for urban modeling. Traditional spatial embeddings often prioritize spatial proximity while underutilizing fine-grained…

计算工程、金融与科学 · 计算机科学 2025-06-04 Junyuan Liu , Xinglei Wang , Tao Cheng

In this paper we address the task of visual place recognition (VPR), where the goal is to retrieve the correct GPS coordinates of a given query image against a huge geotagged gallery. While recent works have shown that building descriptors…

计算机视觉与模式识别 · 计算机科学 2022-01-26 Valerio Paolicelli , Antonio Tavera , Carlo Masone , Gabriele Berton , Barbara Caputo

Item recommendation is a personalized ranking task. To this end, many recommender systems optimize models with pairwise ranking objectives, such as the Bayesian Personalized Ranking (BPR). Using matrix Factorization (MF) --- the most widely…

信息检索 · 计算机科学 2018-08-20 Xiangnan He , Zhankui He , Xiaoyu Du , Tat-Seng Chua

Point-of-Interest (POI ) recommendation systems have gained popularity for their unique ability to suggest geographical destinations with the incorporation of contextual information such as time, location, and user-item interaction.…

信息检索 · 计算机科学 2023-12-07 Ali Tourani , Hossein A. Rahmani , Mohammadmehdi Naghiaei , Yashar Deldjoo

6D object pose estimation in cluttered scenes remains challenging due to severe occlusion and sensor noise. We propose MAPRPose, a two-stage framework that leverages mask-aware correspondences for pose proposal and amodal-driven…

计算机视觉与模式识别 · 计算机科学 2026-04-23 Yang Luo , Yan Gong , Yongsheng Gao , Xiaoying Sun , Jie Zhao

With the advancement of machine learning and artificial intelligence technologies, recommender systems have been increasingly used across a vast variety of platforms to efficiently and effectively match users with items. As application…

信息检索 · 计算机科学 2026-01-28 Xuan Bi , Yaqiong Wang , Gediminas Adomavicius , Shawn Curley

The objective of the panoramic activity recognition task is to identify behaviors at various granularities within crowded and complex environments, encompassing individual actions, social group activities, and global activities. Existing…

计算机视觉与模式识别 · 计算机科学 2024-08-02 Wenqing Gan , Yan Sun , Feiran Liu , Xiangfeng Luo

We introduce Probabilistic Rank and Reward (PRR), a scalable probabilistic model for personalized slate recommendation. Our approach allows off-policy estimation of the reward in the scenario where the user interacts with at most one item…

信息检索 · 计算机科学 2024-07-08 Imad Aouali , Achraf Ait Sidi Hammou , Otmane Sakhi , David Rohde , Flavian Vasile

Bayesian Personalized Ranking (BPR) is a representative pairwise learning method for optimizing recommendation models. It is widely known that the performance of BPR depends largely on the quality of negative sampler. In this paper, we make…

信息检索 · 计算机科学 2018-09-24 Jingtao Ding , Guanghui Yu , Xiangnan He , Yong Li , Depeng Jin

Next Point-of-Interest (POI) recommendation aims to predict users' next locations by leveraging historical check-in sequences. Although existing methods have shown promising results, they often struggle to capture complex high-order…

信息检索 · 计算机科学 2025-03-31 Jinze Wang , Tiehua Zhang , Lu Zhang , Yang Bai , Xin Li , Jiong Jin

Next point of interest (POI) recommendation primarily predicts future activities based on users' past check-in data and current status, providing significant value to users and service providers. We observed that the popular check-in times…

信息检索 · 计算机科学 2025-07-22 Pei-Xuan Li , Wei-Yun Liang , Fandel Lin , Hsun-Ping Hsieh

Sequential recommendations have drawn significant attention in modeling the user's historical behaviors to predict the next item. With the booming development of multimodal data (e.g., image, text) on internet platforms, sequential…

信息检索 · 计算机科学 2024-12-12 Changhong Li , Zhiqiang Guo

Recommender systems leverage both content and user interactions to generate recommendations that fit users' preferences. The recent surge of interest in deep learning presents new opportunities for exploiting these two sources of…

信息检索 · 计算机科学 2016-08-23 Jeroen B. P. Vuurens , Martha Larson , Arjen P. de Vries

Sequential recommendation (SR) aims to predict the next purchasing item according to users' dynamic preference learned from their historical user-item interactions. To improve the performance of recommendation, learning dynamic…

信息检索 · 计算机科学 2024-12-31 Chuan He , Yongchao Liu , Qiang Li , Weiqiang Wang , Xin Fu , Xinyi Fu , Chuntao Hong , Xinwei Yao