no code implementations • 23 Jun 2022 • Yizhou Zhao, Steven Gong, Xiaofeng Gao, Wensi Ai, Song-Chun Zhu
With the recent progress of simulations by 3D modeling software and game engines, many researchers have focused on Embodied AI tasks in the virtual environment.
no code implementations • 6 Jun 2022 • Xiaofeng Gao, Xingwei Wu, Samson Ho, Teruhisa Misu, Kumar Akash
To understand the effect of highlighting on drivers' SA for objects with different types and locations under various traffic densities, we conducted an in-person experiment with 20 participants on a driving simulator.
no code implementations • 1 Jun 2022 • Zuowu Zheng, Changwang Zhang, Xiaofeng Gao, Guihai Chen
Based on this observation, in this paper, we propose a novel approach Hierarchical Intention Embedding Network (HIEN), which considers dependencies of attributes based on bottom-up tree aggregation in the constructed attribute graph.
no code implementations • 25 Apr 2022 • Chenxiao Yang, Qitian Wu, Jipeng Jin, Xiaofeng Gao, Junwei Pan, Guihai Chen
To circumvent false negatives, we develop a principled approach to improve the reliability of negative instances and prove that the objective is an unbiased estimation of sampling from the true negative distribution.
1 code implementation • 27 Feb 2022 • Xiaofeng Gao, Qiaozi Gao, Ran Gong, Kaixiang Lin, Govind Thattai, Gaurav S. Sukhatme
Language-guided Embodied AI benchmarks requiring an agent to navigate an environment and manipulate objects typically allow one-way communication: the human user gives a natural language command to the agent, and the agent can only follow the command passively.
no code implementations • 20 Feb 2022 • Chenxiao Yang, Junwei Pan, Xiaofeng Gao, Tingyu Jiang, Dapeng Liu, Guihai Chen
Multi-task learning (MTL) has been widely used in recommender systems, wherein predicting each type of user feedback on items (e. g, click, purchase) are treated as individual tasks and jointly trained with a unified model.
1 code implementation • 31 Oct 2021 • Runbo Ni, Xueyan Li, Fangqi Li, Xiaofeng Gao, Guihai Chen
Finding influential users in social networks is a fundamental problem with many possible useful applications.
no code implementations • 6 Mar 2021 • Xiaofeng Gao, Luyao Yuan, Tianmin Shu, Hongjing Lu, Song-Chun Zhu
Our experiments with human participants demonstrate that a short calibration using REMP can effectively bridge the gap between what a non-expert user thinks a robot can reach and the ground truth.
no code implementations • 1 Jan 2021 • Qitian Wu, Hengrui Zhang, Xiaofeng Gao, Hongyuan Zha
In this paper, we propose an inductive collaborative filtering framework that learns a hidden relational graph among users from the rating matrix.
no code implementations • 24 Jul 2020 • Xiaofeng Gao, Ran Gong, Yizhou Zhao, Shu Wang, Tianmin Shu, Song-Chun Zhu
Thus, in this paper, we propose a novel explainable AI (XAI) framework for achieving human-like communication in human-robot collaborations, where the robot builds a hierarchical mind model of the human user and generates explanations of its own mind as a form of communications based on its online Bayesian inference of the user's mental state.
1 code implementation • 9 Jul 2020 • Qitian Wu, Hengrui Zhang, Xiaofeng Gao, Junchi Yan, Hongyuan Zha
The first model follows conventional matrix factorization which factorizes a group of key users' rating matrix to obtain meta latents.
no code implementations • 18 Feb 2020 • Chaoqi Yang, Junwei Lu, Xiaofeng Gao, Haishan Liu, Qiong Chen, Gongshen Liu, Guihai Chen
Online real-time bidding (RTB) is known as a complex auction game where ad platforms seek to consider various influential key performance indicators (KPIs), like revenue and return on investment (ROI).
no code implementations • 7 Nov 2019 • Jiacheng Dai, Zhifeng Jia, Xiaofeng Gao, Guihai Chen
Top-k Nearest Geosocial Keyword (T-kNGK) query on geosocial network is defined to give users k recommendations based on some keywords and designated spatial range, and can be realized by shortest path algorithms.
1 code implementation • NeurIPS 2019 • Qitian Wu, Zixuan Zhang, Xiaofeng Gao, Junchi Yan, Guihai Chen
We target modeling latent dynamics in high-dimension marked event sequences without any prior knowledge about marker relations.
no code implementations • 26 Aug 2019 • Xiuqi Huang, Yuanning Gao, Xiaofeng Gao, Guihai Chen
In the user layer, we exploit the network embedding strategy to measure the relationship effect in users' relationship network.
1 code implementation • 25 Mar 2019 • Qitian Wu, Hengrui Zhang, Xiaofeng Gao, Peng He, Paul Weng, Han Gao, Guihai Chen
Social recommendation leverages social information to solve data sparsity and cold-start problems in traditional collaborative filtering methods.
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1 code implementation • 13 Mar 2019 • Xiaofeng Gao, Ran Gong, Tianmin Shu, Xu Xie, Shu Wang, Song-Chun Zhu
One of the main challenges of advancing task-oriented learning such as visual task planning and reinforcement learning is the lack of realistic and standardized environments for training and testing AI agents.
no code implementations • 31 Oct 2017 • Fei Wang, Xiaofeng Gao, Guihai Chen, Jun Ye
Unfortunately, the calculation of the sampling probability distribution $P$ causes a major limitation of IS: it requires the input data to be well-structured, i. e., the feature vector is properly defined.
no code implementations • 1 Mar 2017 • Tianmin Shu, Xiaofeng Gao, Michael S. Ryoo, Song-Chun Zhu
In this paper, we present a general framework for learning social affordance grammar as a spatiotemporal AND-OR graph (ST-AOG) from RGB-D videos of human interactions, and transfer the grammar to humanoids to enable a real-time motion inference for human-robot interaction (HRI).