1 code implementation • NAACL 2022 • Guangyi Liu, Zichao Yang, Tianhua Tao, Xiaodan Liang, Junwei Bao, Zhen Li, Xiaodong He, Shuguang Cui, Zhiting Hu
Such training objective is sub-optimal when the target sequence is not perfect, e. g., when the target sequence is corrupted with noises, or when only weak sequence supervision is available.
no code implementations • 3 Jun 2024 • Guangyi Liu, Yongqi Zhang, Yong Li, Quanming Yao
The task of reasoning over Knowledge Graphs (KGs) poses a significant challenge for Large Language Models (LLMs) due to the complex structure and large amounts of irrelevant information.
no code implementations • 25 May 2024 • Lan Wu, Xuebin Wang, Ruijuan Chu, Guangyi Liu, Yingchun Chen, Jing Zhang, Linyu Wang
To address the above issues, we propose FlightPatchNet, a multi-scale patch network with differential coding for flight trajectory prediction.
no code implementations • 9 Apr 2024 • Sen Wang, Tianxiong Wang, Shulun Zhao, Zhen Feng, Guangyi Liu, Chunfeng Cui, Chih-Lin I, Jiangzhou Wang
The proposed system architecture and the dedicated signal processing methods enable the scheme to transmit a bigger number of parallel data streams than the number of receiving RF chains, achieving a spectral efficiency performance close to that of a fully digital (FD) MIMO system with the same number of antenna elements, each equipped with an RF chain.
1 code implementation • 21 Mar 2024 • Guangyi Liu, Quanming Yao, Yongqi Zhang, Lei Chen
Recommendation systems, as widely implemented nowadays on various platforms, recommend relevant items to users based on their preferences.
no code implementations • 19 Mar 2024 • Heng Wang, Jianhua Zhang, Gaofeng Nie, Li Yu, Zhiqiang Yuan, Tongjie Li, Jialin Wang, Guangyi Liu
Digital twin channel (DTC) is the real-time mapping of a wireless channel from the physical world to the digital world, which is expected to provide significant performance enhancements for the sixth-generation (6G) air-interface design.
no code implementations • 29 Feb 2024 • Guangyi Liu, Yu Wang, Zeyu Feng, Qiyu Wu, Liping Tang, Yuan Gao, Zhen Li, Shuguang Cui, Julian McAuley, Zichao Yang, Eric P. Xing, Zhiting Hu
The vast applications of deep generative models are anchored in three core capabilities -- generating new instances, reconstructing inputs, and learning compact representations -- across various data types, such as discrete text/protein sequences and continuous images.
no code implementations • 28 Dec 2023 • Guangyi Liu, Christoforos Somarakis, Nader Motee
This work explores cascading failures in networked control systems by employing a platoon of vehicles that exchange information over a time-delayed communication graph as a model.
no code implementations • 16 Dec 2023 • Jialin Wang, Jianhua Zhang, Yuxiang Zhang, Yutong Sun, Gaofeng, Nie, Lianzheng Shi, Ping Zhang, Guangyi Liu
The digital twin channel (DTC) is crucial for 6G wireless autonomous networks as it replicates the wireless channel fading states in 6G air interface transmissions.
no code implementations • 25 Oct 2023 • Yameng Liu, Jianhua Zhang, Yuxiang Zhang, Huiwen Gong, Tao Jiang, Guangyi Liu
The proposed approach can be summarized as follows: Firstly, an ISAC channel model is proposed, where shared and non-shared components are superimposed for both communication and sensing.
no code implementations • 10 Sep 2023 • Vivek Pandey, Guangyi Liu, Arash Amini, Nader Motee
In this paper, we propose a distributionally robust risk framework to investigate cascading failures in platoons.
no code implementations • 26 May 2023 • Jianhua Zhang, Jiaxin Lin, Pan Tang, Yuxiang Zhang, Huixin Xu, Tianyang Gao, Haiyang Miao, Zeyong Chai, Zhengfu Zhou, Yi Li, Huiwen Gong, Yameng Liu, Zhiqiang Yuan, Lei Tian, Shaoshi Yang, Liang Xia, Guangyi Liu, Ping Zhang
Then, a survey of the progress of the 6G channel research regarding the above five promising technologies is presented in terms of the latest measurement campaigns, new characteristics, modeling methods, and research prospects.
no code implementations • 22 May 2023 • Zixiang Han, Lincong Han, Xiaozhou Zhang, Yajuan Wang, Liang Ma, Mengting Lou, Jing Jin, Guangyi Liu
A novel multistatic multiple-input multiple-output (MIMO) integrated sensing and communication (ISAC) system in cellular networks is proposed.
no code implementations • 18 Apr 2023 • Weihua Xu, Feifei Gao, Yong Zhang, Chengkang Pan, Guangyi Liu
Visual perception is an effective way to obtain the spatial characteristics of wireless channels and to reduce the overhead for communications system.
no code implementations • 16 Mar 2023 • Guangyi Liu, Disha Kamale, Cristian-Ioan Vasile, Nader Motee
We develop a novel framework to assess the risk of misperception in a traffic sign classification task in the presence of exogenous noise.
no code implementations • 15 Mar 2023 • Guangyi Liu, Vivek Pandey, Christoforos Somarakis, Nader Motee
We develop a framework to assess the risk of cascading failures when a team of agents aims to rendezvous in time in the presence of exogenous noise and communication time-delay.
no code implementations • 15 Feb 2023 • Huiwen Gong, Jianhua Zhang, Yuxiang Zhang, Zhengfu Zhou, Guangyi Liu
In the modeling process, we consider the non-ideal phase modulation of the RIS element, so as to accurately characterize the dependence of its phase modulation on the incoming wave angle.
no code implementations • 21 Jan 2023 • Feiyang Wen, Weihua Xu, Feifei Gao, Chengkang Pan, Guangyi Liu
In this letter, we propose a novel mmWave beam selection method based on the environment semantics extracted from user-side camera images.
no code implementations • 14 Jan 2023 • Yuwen Yang, Feifei Gao, Xiaoming Tao, Guangyi Liu, Chengkang Pan
In this paper, we propose an environment semantics aided wireless communication framework to reduce the transmission latency and improve the transmission reliability, where semantic information is extracted from environment image data, selectively encoded based on its task-relevance, and then fused to make decisions for channel related tasks.
no code implementations • 11 Jan 2023 • Zhijin Qin, Feifei Gao, Bo Lin, Xiaoming Tao, Guangyi Liu, Chengkang Pan
This article introduces a framework for generalized semantic communication system, which exploits the semantic information in both the multimodal source and the wireless channel environment.
no code implementations • 29 Dec 2022 • Yuan Zhang, Jianhua Zhang, Yuxiang Zhang, Yuan YAO, Guangyi Liu
However, the channel might not satisfy isotropic scattering because of generalized angle distributions, and the antenna gain is limited by the array aperture in reality.
no code implementations • 12 Nov 2022 • Yameng Liu, Jianhua Zhang, Yuxiang Zhang, Zhiqiang Yuan, Guangyi Liu
Then, a stochastic JCAS channel model is proposed to capture the sharing feature, where shared and non-shared clusters by the two channels are defined and superimposed.
1 code implementation • 1 Aug 2022 • Guangyi Liu, Zeyu Feng, Yuan Gao, Zichao Yang, Xiaodan Liang, Junwei Bao, Xiaodong He, Shuguang Cui, Zhen Li, Zhiting Hu
This paper proposes a new efficient approach for composable text operations in the compact latent space of text.
Ranked #2 on Unsupervised Text Style Transfer on Yelp
no code implementations • 12 Jul 2022 • Bo Lin, Feifei Gao, Yong Zhang, Chengkang Pan, Guangyi Liu
In this paper, we proposed a multi-camera view based proactive BS selection and beam switching that can predict the optimal BS of the user in the future frame and switch the corresponding beam pair.
no code implementations • 11 Jul 2022 • Zhaowei Chang, Jianhua Zhang, Pan Tang, Lei Tian, Li Yu, Guangyi Liu, Liang Xia
In this letter, the reflection coefficient of the THz channel is researched based on extensive measurement campaigns.
no code implementations • 6 Jun 2022 • Xiang Peng, Zhijin Qin, Danlan Huang, Xiaoming Tao, Jianhua Lu, Guangyi Liu, Chengkang Pan
With the advent of the 6G era, the concept of semantic communication has attracted increasing attention.
1 code implementation • 9 May 2022 • Zhenzi Weng, Zhijin Qin, Xiaoming Tao, Chengkang Pan, Guangyi Liu, Geoffrey Ye Li
In this paper, we develop a deep learning based semantic communication system for speech transmission, named DeepSC-ST. We take the speech recognition and speech synthesis as the transmission tasks of the communication system, respectively.
no code implementations • 10 Mar 2022 • Guangyi Liu, Arash Amini, Martin Takac, Nader Motee
For a given stable recurrent neural network (RNN) that is trained to perform a classification task using sequential inputs, we quantify explicit robustness bounds as a function of trainable weight matrices.
no code implementations • 29 Dec 2021 • Christoforos Somarakis, Guangyi Liu, Nader Motee
We develop a framework to quantify systemic risk measures in a class of Wide-Area-Control (WAC) laws in power networks in the presence of noisy and time-delayed sensory data.
no code implementations • 29 Dec 2021 • Guangyi Liu, Christoforos Somarakis, Nader Motee
We develop a framework to assess the risk of cascading collisions in a platoon of vehicles in the presence of exogenous noise and communication time-delay.
no code implementations • 5 Sep 2021 • Guangyi Liu, Christoforos Somarakis, Nader Motee
We develop a systemic risk framework to explore cascading systemic failures in networked control systems.
no code implementations • 11 Aug 2021 • Guangyi Liu, Yinghong Liao, Fuyu Wang, Bin Zhang, Lu Zhang, Xiaodan Liang, Xiang Wan, Shaolin Li, Zhen Li, Shuixing Zhang, Shuguang Cui
Medical imaging technologies, including computed tomography (CT) or chest X-Ray (CXR), are largely employed to facilitate the diagnosis of the COVID-19.
no code implementations • 1 Jul 2021 • Yijing Liu, Xiang Zhang, Renchang Dai, Guangyi Liu
The modern power system is evolving with increasing penetration of power electronics introducing complicated electromagnetic phenomenon.
1 code implementation • 29 Jun 2021 • Guangyi Liu, Zichao Yang, Tianhua Tao, Xiaodan Liang, Junwei Bao, Zhen Li, Xiaodong He, Shuguang Cui, Zhiting Hu
Such training objective is sub-optimal when the target sequence is not perfect, e. g., when the target sequence is corrupted with noises, or when only weak sequence supervision is available.
no code implementations • 16 Jun 2021 • Yachen Tang, Haiyun Han, Xianmao Yu, Jing Zhao, Guangyi Liu, Longfei Wei
The intelligent question answering (IQA) system can accurately capture users' search intention by understanding the natural language questions, searching relevant content efficiently from a massive knowledge-base, and returning the answer directly to the user.
no code implementations • 6 Jun 2021 • Xiang Zhang, Renchang Dai, Peng Wei, Yijing Liu, Guangyi Liu, Zhiwei Wang
Transient stability analysis (TSA) plays an important role in power system analysis to investigate the stability of power system.
no code implementations • 3 May 2021 • Arash Amini, Guangyi Liu, Nader Motee
However, artificial neural networks are known to exhibit poor robustness in presence of input noise, where the sequential architecture of RNNs exacerbates the problem.
no code implementations • 22 Dec 2020 • Reza Bayani, Saeed D. Manshadi, Guangyi Liu, Yawei Wang, Renchang Dai
A total 19% of generation capacity in California is offered by PV units and over some months, more than 10% of this energy is curtailed.
no code implementations • 18 Dec 2020 • Guangyi Liu, Arash Amini, Martin Takáč, Héctor Muñoz-Avila, Nader Motee
We consider the problem of classifying a map using a team of communicating robots.
no code implementations • COLING 2020 • Yingyao Wang, Junwei Bao, Guangyi Liu, Youzheng Wu, Xiaodong He, BoWen Zhou, Tiejun Zhao
This paper aims to enhance the few-shot relation classification especially for sentences that jointly describe multiple relations.
no code implementations • 20 Sep 2019 • Hossein K. Mousavi, Guangyi Liu, Weihang Yuan, Martin Takáč, Héctor Muñoz-Avila, Nader Motee
We propose a planning and perception mechanism for a robot (agent), that can only observe the underlying environment partially, in order to solve an image classification problem.
no code implementations • 28 Apr 2019 • Yachen Tang, Tingting Liu, Guangyi Liu, Jie Li, Renchang Dai, Chen Yuan
Because of data duplication, database decentralization, weak data relations, and sluggish data updates, the power asset management system eager to adopt a new strategy to avoid the information losses, bias, and improve the data storage efficiency and extraction process.
no code implementations • 18 Sep 2018 • Yizheng Liao, Yang Weng, Guangyi Liu, Zhongyang Zhao, Chin-Woo Tan, Ram Rajagopal
Then, this paper proves that the Chow-Liu algorithm finds the topology by utilizing power flow equations and the conditional independence relationships implied by the radial multi-phase structure of distribution grids with the presence of incorrect bus phase labels.
no code implementations • 18 Sep 2018 • Yongli Zhu, Songtao Lu, Renchang Dai, Guangyi Liu, Zhiwei Wang
Then the raw input and output data are preprocessed by unit scaling, and the trained network is tested on the real price data under different input lengths, forecasting horizons and data sizes.
no code implementations • 10 Sep 2018 • Mahdi Khodayar, Saeed Mohammadi, Mohammad Khodayar, Jianhui Wang, Guangyi Liu
In this paper, a deep generative model is introduced to capture continuous probability densities corresponding to the nodes of an arbitrary graph.
no code implementations • 6 Nov 2016 • Yizheng Liao, Yang Weng, Guangyi Liu, Ram Rajagopal
The increasing penetration of distributed energy resources poses numerous reliability issues to the urban distribution grid.