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In this paper, we present an unsupervised learning approach to identify the user points of interest (POI) by exploiting WiFi measurements from smartphone application data. Due to the lack of GPS positioning accuracy in indoor, sheltered,…

Machine Learning · Computer Science 2021-05-11 Sumudu HasalaMarakkalage , Billy Pik Lik Lau , Yuren Zhou , Ran Liu , Chau Yuen , Wei Quin Yow , Keng Hua Chong

Recommendation for new users, also called user cold start, has been a well-recognized challenge for online recommender systems. Most existing methods view the crux as the lack of initial data. However, in this paper, we argue that there are…

Information Retrieval · Computer Science 2021-08-25 Shangfeng Dai , Haobin Lin , Zhichen Zhao , Jianying Lin , Honghuan Wu , Zhe Wang , Sen Yang , Ji Liu

Previous Person Re-Identification (Re-ID) models aim to focus on the most discriminative region of an image, while its performance may be compromised when that region is missing caused by camera viewpoint changes or occlusion. To solve this…

Computer Vision and Pattern Recognition · Computer Science 2020-08-11 Zhipu Liu , Lei Zhang , Yang Yang

Extracting significant places or places of interest (POIs) using individuals' spatio-temporal data is of fundamental importance for human mobility analysis. Classical clustering methods have been used in prior work for detecting POIs, but…

Machine Learning · Computer Science 2018-07-03 Yunlong Wang , Bjoern Sommer , Falk Schreiber , Harald Reiterer

Large language models (LLMs) have shown promising potential for next Point-of-Interest (POI) recommendation. However, existing methods only perform direct zero-shot prompting, leading to ineffective extraction of user preferences,…

Information Retrieval · Computer Science 2024-12-12 Ziqing Wu , Zhu Sun , Dongxia Wang , Lu Zhang , Jie Zhang , Yew Soon Ong

Sequential recommendation is a popular task in academic research and close to real-world application scenarios, where the goal is to predict the next action(s) of the user based on his/her previous sequence of actions. In the training…

Information Retrieval · Computer Science 2022-04-26 Yuli Liu , Christian Walder , Lexing Xie

Loneliness is a growing health concern as it can lead to depression and other associated mental health problems for people who experience feelings of loneliness over prolonged periods of time. Utilizing passive sensing methods that use…

Human-Computer Interaction · Computer Science 2024-02-09 Malik Muhammad Qirtas , Evi Zafeiridi , Eleanor Bantry White , Dirk Pesch

Digital maps are commonly used across the globe for exploring places that users are interested in, commonly referred to as points of interest (PoI). In online food delivery platforms, PoIs could represent any major private compounds where…

Machine Learning · Computer Science 2021-09-10 Abhinav Ganesan , Anubhav Gupta , Jose Mathew

Travel providers such as airlines and on-line travel agents are becoming more and more interested in understanding how passengers choose among alternative itineraries when searching for flights. This knowledge helps them better display and…

Machine Learning · Statistics 2018-03-19 Alejandro Mottini , Rodrigo Acuna-Agost

Traditional geometric registration based estimation methods only exploit the CAD model implicitly, which leads to their dependence on observation quality and deficiency to occlusion. To address the problem,the paper proposes a bidirectional…

Computer Vision and Pattern Recognition · Computer Science 2023-09-15 Yuhao Yang , Jun Wu , Yue Wang , Guangjian Zhang , Rong Xiong

With the increasing popularity of location-based social media applications and devices that automatically tag generated content with locations, large repositories of collaborative geo-referenced data are appearing on-line. Efficiently…

Information Retrieval · Computer Science 2012-04-09 Leandro Balby Marinho , Cláudio de Souza Baptista , Thomas Sandholm , Iury Nunes , Caio Nóbrega , Jordão Araújo

Point-of-Interest (POI) retrieval aims to identify relevant candidates from massive-scale POI databases, serving as a cornerstone for diverse location-based services. However, in general map search scenarios, conventional POI retrieval…

Information Retrieval · Computer Science 2026-05-06 Dong Chen , Shuai Zheng , Haoyang Shao , Hongsheng Wu , Muhao Xu , Yeyu Yan , Ruifang Li , Zhenfeng Zhu

The next location recommendation is at the core of various location-based applications. Current state-of-the-art models have attempted to solve spatial sparsity with hierarchical gridding and model temporal relation with explicit time…

Information Retrieval · Computer Science 2021-02-09 Yingtao Luo , Qiang Liu , Zhaocheng Liu

Point-of-interest (POI) recommender systems help users discover relevant locations, but their effectiveness is often compromised by popularity bias, which disadvantages less popular, yet potentially meaningful places. This paper addresses…

Information Retrieval · Computer Science 2025-07-15 Andrea Forster , Simone Kopeinik , Denic Helic , Stefan Thalmann , Dominik Kowald

Modern web-based platforms show ranked lists of recommendations to users, attempting to maximise user satisfaction or business metrics. Typically, the goal of such systems boils down to maximising the exposure probability for items that are…

Information Retrieval · Computer Science 2023-07-27 Olivier Jeunen

This paper presents the design of deep learning architectures which allow to classify the social relationship existing between two people who are walking in a side-by-side formation into four possible categories --colleagues, couple, family…

Machine Learning · Computer Science 2022-07-08 Oscar Castro , Ely Repiso , Anais Garrell , Alberto Sanfeliu

Standard methods in preference learning involve estimating the parameters of discrete choice models from data of selections (choices) made by individuals from a discrete set of alternatives (the choice set). While there are many models for…

Machine Learning · Computer Science 2021-08-18 Kiran Tomlinson , Johan Ugander , Austin R. Benson

A recommender system learns to predict the user-specific preference or intention over many items simultaneously for all users, making personalized recommendations based on a relatively small number of observations. One central issue is how…

Information Retrieval · Computer Science 2022-09-21 Ben Dai , Xiaotong Shen , Wei Pan

The next point-of-interest (POI) recommendation task aims to predict the users' immediate next destinations based on their preferences and historical check-ins, holding significant value in location-based services. Recently, large language…

Artificial Intelligence · Computer Science 2025-10-17 Penglong Zhai , Jie Li , Fanyi Di , Yue Liu , Yifang Yuan , Jie Huang , Peng Wu , Sicong Wang , Mingyang Yin , Tingting Hu , Yao Xu , Xin Li

Predicting the next interaction of a short-term interaction session is a challenging task in session-based recommendation. Almost all existing works rely on item transition patterns, and neglect the impact of user historical sessions while…

Information Retrieval · Computer Science 2022-03-01 Yitong Pang , Lingfei Wu , Qi Shen , Yiming Zhang , Zhihua Wei , Fangli Xu , Ethan Chang , Bo Long , Jian Pei