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This paper proposes a multi-day needs-based model for activity and travel demand analysis. The model captures the multi-day dynamics in activity generation, which enables the modeling of activities with increased flexibility in time and…

The large-scale recommender system mainly consists of two stages: matching and ranking. The matching stage (also known as the retrieval step) identifies a small fraction of relevant items from billion-scale item corpus in low latency and…

Information Retrieval · Computer Science 2021-05-19 Houyi Li , Zhihong Chen , Chenliang Li , Rong Xiao , Hongbo Deng , Peng Zhang , Yongchao Liu , Haihong Tang

Aligning agent behaviors with diverse human preferences remains a challenging problem in reinforcement learning (RL), owing to the inherent abstractness and mutability of human preferences. To address these issues, we propose AlignDiff, a…

Artificial Intelligence · Computer Science 2024-02-06 Zibin Dong , Yifu Yuan , Jianye Hao , Fei Ni , Yao Mu , Yan Zheng , Yujing Hu , Tangjie Lv , Changjie Fan , Zhipeng Hu

Data association-based multiple object tracking (MOT) involves multiple separated modules processed or optimized differently, which results in complex method design and requires non-trivial tuning of parameters. In this paper, we present an…

Computer Vision and Pattern Recognition · Computer Science 2019-04-11 Peng Chu , Haibin Ling

Travel demand modeling has shifted from aggregated trip-based models to behavior-oriented activity-based models because daily trips are essentially driven by human activities. To analyze the sequential activity-travel decisions, deep…

Artificial Intelligence · Computer Science 2025-03-18 Yuebing Liang , Shenhao Wang , Jiangbo Yu , Zhan Zhao , Jinhua Zhao , Sandy Pentland

The unprecedented performance of deep neural networks (DNNs) has led to large strides in various Artificial Intelligence (AI) inference tasks, such as object and speech recognition. Nevertheless, deploying such AI models across commodity…

Machine Learning · Computer Science 2021-06-30 Stylianos I. Venieris , Ioannis Panopoulos , Ilias Leontiadis , Iakovos S. Venieris

High-speed, low-latency obstacle avoidance that is insensitive to sensor noise is essential for enabling multiple decentralized robots to function reliably in cluttered and dynamic environments. While other distributed multi-agent collision…

Artificial Intelligence · Computer Science 2017-07-07 Pinxin Long , Wenxi Liu , Jia Pan

Sensor-based human activity recognition (HAR) requires to predict the action of a person based on sensor-generated time series data. HAR has attracted major interest in the past few years, thanks to the large number of applications enabled…

Machine Learning · Computer Science 2021-03-30 Davide Buffelli , Fabio Vandin

The Embodied AI community has made significant strides in visual navigation tasks, exploring targets from 3D coordinates, objects, language descriptions, and images. However, these navigation models often handle only a single input modality…

In this paper, we want to show the potential benefit of a dynamic auto-tuning approach for the inference process in the Deep Neural Network (DNN) context, tackling the object detection challenge. We benchmarked different neural networks to…

Computer Vision and Pattern Recognition · Computer Science 2021-05-28 Emanuele Vitali , Anton Lokhmotov , Gianluca Palermo

3D object detection has recently received much attention due to its great potential in autonomous vehicle (AV). The success of deep learning based object detectors relies on the availability of large-scale annotated datasets, which is…

Computer Vision and Pattern Recognition · Computer Science 2024-10-23 Jinpeng Lin , Zhihao Liang , Shengheng Deng , Lile Cai , Tao Jiang , Tianrui Li , Kui Jia , Xun Xu

Vision-and-Language Navigation (VLN) requires an embodied agent to ground complex natural-language instructions into long-horizon navigation in unseen environments. While Vision-Language Models (VLMs) offer strong 2D semantic understanding,…

Robotics · Computer Science 2026-03-19 Zihao Xin , Wentong Li , Yixuan Jiang , Ziyuan Huang , Bin Wang , Piji Li , Jianke Zhu , Jie Qin , Shengjun Huang

Recently, a deep reinforcement learning method is proposed to solve multiobjective optimization problem. In this method, the multiobjective optimization problem is decomposed to a number of single-objective optimization subproblems and all…

Neural and Evolutionary Computing · Computer Science 2020-02-14 Hong Wu , Jiahai Wang , Zizhen Zhang

Designing resource-efficient Deep Neural Networks (DNNs) is critical to deploy deep learning solutions over edge platforms due to diverse performance, power, and memory budgets. Unfortunately, it is often the case a well-trained ML model…

Machine Learning · Computer Science 2020-06-09 Sheng-Chun Kao , Arun Ramamurthy , Reed Williams , Tushar Krishna

Navigating and understanding complex and unknown environments autonomously demands more than just basic perception and movement from embodied agents. Truly effective exploration requires agents to possess higher-level cognitive abilities,…

Artificial Intelligence · Computer Science 2025-09-12 Abdel Hakim Drid , Vincenzo Suriani , Daniele Nardi , Abderrezzak Debilou

Object Goal Navigation (ObjectNav) refers to an agent navigating to an object in an unseen environment, which is an ability often required in the accomplishment of complex tasks. While existing methods demonstrate proficiency in isolated…

Robotics · Computer Science 2026-04-15 Jiahua Pei , Yi Liu , Guoping Pan , Yuanhao Jiang , Houde Liu , Xueqian Wang

Autonomous navigation for Unmanned Aerial Vehicles faces key challenges from limited onboard computational resources, which restrict deployed deep neural networks to shallow architectures incapable of handling complex environments.…

Robotics · Computer Science 2025-12-25 Pengyu Chen , Tao Ouyang , Ke Luo , Weijie Hong , Xu Chen

Cross-domain Recommendation systems leverage multi-domain user interactions to improve performance, especially in sparse data or new user scenarios. However, CDR faces challenges such as effectively capturing user preferences and avoiding…

Information Retrieval · Computer Science 2024-10-10 Junxiong Tong , Mingjia Yin , Hao Wang , Qiushi Pan , Defu Lian , Enhong Chen

We revisit the problem of Object-Goal Navigation (ObjectNav). In its simplest form, ObjectNav is defined as the task of navigating to an object, specified by its label, in an unexplored environment. In particular, the agent is initialized…

Computer Vision and Pattern Recognition · Computer Science 2020-09-01 Dhruv Batra , Aaron Gokaslan , Aniruddha Kembhavi , Oleksandr Maksymets , Roozbeh Mottaghi , Manolis Savva , Alexander Toshev , Erik Wijmans

In mobile manipulation, navigation and manipulation are often treated as separate problems, resulting in a significant gap between merely approaching an object and engaging with it effectively. Many navigation approaches primarily define…

Robotics · Computer Science 2025-03-17 Pingrui Zhang , Xianqiang Gao , Yuhan Wu , Kehui Liu , Dong Wang , Zhigang Wang , Bin Zhao , Yan Ding , Xuelong Li