1 code implementation • 16 Jan 2022 • Ziwei Fan, Zhiwei Liu, Alice Wang, Zahra Nazari, Lei Zheng, Hao Peng, Philip S. Yu
We further argue that BPR loss has no constraint on positive and sampled negative items, which misleads the optimization.
1 code implementation • 14 Aug 2021 • Ziwei Fan, Zhiwei Liu, Jiawei Zhang, Yun Xiong, Lei Zheng, Philip S. Yu
Therefore, we propose to unify sequential patterns and temporal collaborative signals to improve the quality of recommendation, which is rather challenging.
1 code implementation • 11 Jun 2021 • Ziwei Fan, Zhiwei Liu, Lei Zheng, Shen Wang, Philip S. Yu
We use Elliptical Gaussian distributions to describe items and sequences with uncertainty.
no code implementations • 24 Feb 2021 • Lei Zheng, Rui Yang, Zhixuan Wu, Jiesen Panb, Hui Cheng
In this paper, a safe and learning-based control framework for model predictive control (MPC) is proposed to optimize nonlinear systems with a non-differentiable objective function under uncertain environmental disturbances.
Gaussian Processes
Robotics
1 code implementation • 18 Oct 2019 • Zhiwei Liu, Lei Zheng, Jiawei Zhang, Jiayu Han, Philip S. Yu
JSCN will simultaneously operate multi-layer spectral convolutions on different graphs, and jointly learn a domain-invariant user representation with a domain adaptive user mapping module.
2 code implementations • 7 May 2019 • Kan Ren, Jiarui Qin, Lei Zheng, Zhengyu Yang, Wei-Nan Zhang, Yong Yu
The problem is formulated as to forecast the probability distribution of market price for each ad auction.
1 code implementation • 2 May 2019 • Kan Ren, Jiarui Qin, Yuchen Fang, Wei-Nan Zhang, Lei Zheng, Weijie Bian, Guorui Zhou, Jian Xu, Yong Yu, Xiaoqiang Zhu, Kun Gai
In order to tackle these challenges, in this paper, we propose a Hierarchical Periodic Memory Network for lifelong sequential modeling with personalized memorization of sequential patterns for each user.
no code implementations • 6 Jan 2019 • Tomasz Konopczyński, Thorben Kröger, Lei Zheng, Christoph S. Garbe, Jürgen Hesser
Following their idea of feature learning instead of hand-crafted filters, we have extended the method to learn 3D features.
no code implementations • 4 Jan 2019 • Tomasz Konopczyński, Jitendra Rathore, Thorben Kröger, Lei Zheng, Christoph S. Garbe, Simone Carmignato, Jürgen Hesser
We suggest both the metrics and this data set as a reference for studying the performance of different algorithms.
no code implementations • 4 Jan 2019 • Tomasz Konopczyński, Thorben Kröger, Lei Zheng, Jürgen Hesser
We propose a novel approach for automatic extraction (instance segmentation) of fibers from low resolution 3D X-ray computed tomography scans of short glass fiber reinforced polymers.
no code implementations • 4 Jan 2019 • Tomasz Konopczyński, Danish Rathore, Jitendra Rathore, Thorben Kröger, Lei Zheng, Christoph S. Garbe, Simone Carmignato, Jürgen Hesser
We present the first attempt to perform short glass fiber semantic segmentation from X-ray computed tomography volumetric datasets at medium (3. 9 {\mu}m isotropic) and low (8. 3 {\mu}m isotropic) resolution using deep learning architectures.
no code implementations • 11 Nov 2018 • Vahid Noroozi, Sara Bahaadini, Lei Zheng, Sihong Xie, Weixiang Shao, Philip S. Yu
While neural networks for learning representation of multi-view data have been previously proposed as one of the state-of-the-art multi-view dimension reduction techniques, how to make the representation discriminative with only a small amount of labeled data is not well-studied.
Dimensionality Reduction
Learning Representation Of Multi-View Data
1 code implementation • 7 Sep 2018 • Kan Ren, Jiarui Qin, Lei Zheng, Zhengyu Yang, Wei-Nan Zhang, Lin Qiu, Yong Yu
By capturing the time dependency through modeling the conditional probability of the event for each sample, our method predicts the likelihood of the true event occurrence and estimates the survival rate over time, i. e., the probability of the non-occurrence of the event, for the censored data.
1 code implementation • 30 Aug 2018 • Lei Zheng, Chun-Ta Lu, Fei Jiang, Jiawei Zhang, Philip S. Yu
Benefiting from the rich information of connectivity existing in the \textit{spectral domain}, SpectralCF is capable of discovering deep connections between users and items and therefore, alleviates the \textit{cold-start} problem for CF.
2 code implementations • 3 Jun 2018 • Yang Yang, Lei Zheng, Jiawei Zhang, Qingcai Cui, Zhoujun Li, Philip S. Yu
By projecting the explicit and latent features into a unified feature space, TI-CNN is trained with both the text and image information simultaneously.
no code implementations • 23 Mar 2018 • Bokai Cao, Lei Zheng, Chenwei Zhang, Philip S. Yu, Andrea Piscitello, John Zulueta, Olu Ajilore, Kelly Ryan, Alex D. Leow
The increasing use of electronic forms of communication presents new opportunities in the study of mental health, including the ability to investigate the manifestations of psychiatric diseases unobtrusively and in the setting of patients' daily lives.
1 code implementation • 6 Feb 2018 • Yaoming Zhu, Sidi Lu, Lei Zheng, Jiaxian Guo, Wei-Nan Zhang, Jun Wang, Yong Yu
We introduce Texygen, a benchmarking platform to support research on open-domain text generation models.
no code implementations • 12 Jun 2017 • Vahid Noroozi, Lei Zheng, Sara Bahaadini, Sihong Xie, Philip S. Yu
The model consists of two complementary components.
5 code implementations • 17 Jan 2017 • Lei Zheng, Vahid Noroozi, Philip S. Yu
One of the networks focuses on learning user behaviors exploiting reviews written by the user, and the other one learns item properties from the reviews written for the item.