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4,266 results on '"Fu, Hao"'

102. Energy efficiency of ultra-dense small cell radio access networks for 5G and beyond

Author

Fu, Hao and O'Farrell, Timothy

Abstract

Small cell base station (BS) densification in the radio access network (RAN) is an effective solution to improve the RAN capacity. However, small cell BS densification by adding more non-zero energy-consuming BSs increases energy consumption, compromising energy efficiency, which can be mitigated by adopting sleep mode. A comprehensive evaluation framework is applied in this research to analyse the capacity, energy consumption, and energy efficiency performance of the ultra-dense small cell RANs as a complete energy efficiency assessment, which is lacking in the literature. The impact of advanced techniques millimetre wave (mmWave), antenna array beamforming, and integrated access and backhaul (IAB) on RAN energy efficiency are also investigated. MATLAB- based simulation results show that the ultra-dense small cell RANs, where the number of BSs greatly exceeds the number of active user equipment (UEs), can only be energy efficient if all the empty cells without UE association are turned off completely. Energy efficiency enhancement comes from capacity improvement and energy consumption constraint. Specifically, the ultra-dense small cell RANs can achieve maximum performance improvement of 7.56-fold and 2.35-fold regarding capacity, 3780.11-fold and 32.38-fold regarding energy consumption using the current power model, and 28591.53-fold and 75.97-fold regarding energy efficiency in homogeneous and heterogeneous infrastructures, respectively, comparing the cases with and without the sleep mode. In addition, mmWave and IAB trade energy consumption and energy efficiency for capacity improvement and backhaul cost reduction. With mmWave and IAB, dense small cell RAN can achieve a maximum of 2.55-fold and 1.70-fold for capacity improvement, 2.46-fold and 2.89-fold for energy consumption reduction using the current power model, and 6.27-fold and 8.34-fold energy efficiency enhancement for UE densities of 900 and 300 UEs/km2, respectively, comparing the cases with and without the sleep mode.

Published
2022

103. Denoising User-aware Memory Network for Recommendation

Author

Bian, Zhi, Zhou, Shaojun, Fu, Hao, Yang, Qihong, Sun, Zhenqi, Tang, Junjie, Liu, Guiquan, Liu, Kaikui, and Li, Xiaolong

Subjects
Computer Science - Information Retrieval, Computer Science - Artificial Intelligence
Abstract

For better user satisfaction and business effectiveness, more and more attention has been paid to the sequence-based recommendation system, which is used to infer the evolution of users' dynamic preferences, and recent studies have noticed that the evolution of users' preferences can be better understood from the implicit and explicit feedback sequences. However, most of the existing recommendation techniques do not consider the noise contained in implicit feedback, which will lead to the biased representation of user interest and a suboptimal recommendation performance. Meanwhile, the existing methods utilize item sequence for capturing the evolution of user interest. The performance of these methods is limited by the length of the sequence, and can not effectively model the long-term interest in a long period of time. Based on this observation, we propose a novel CTR model named denoising user-aware memory network (DUMN). Specifically, the framework: (i) proposes a feature purification module based on orthogonal mapping, which use the representation of explicit feedback to purify the representation of implicit feedback, and effectively denoise the implicit feedback; (ii) designs a user memory network to model the long-term interests in a fine-grained way by improving the memory network, which is ignored by the existing methods; and (iii) develops a preference-aware interactive representation component to fuse the long-term and short-term interests of users based on gating to understand the evolution of unbiased preferences of users. Extensive experiments on two real e-commerce user behavior datasets show that DUMN has a significant improvement over the state-of-the-art baselines. The code of DUMN model has been uploaded as an additional material.

Published
2021

126. Non-autoregressive Transformer-based End-to-end ASR using BERT

Author

Yu, Fu-Hao and Chen, Kuan-Yu

Subjects
Computer Science - Computation and Language, Computer Science - Sound, Electrical Engineering and Systems Science - Audio and Speech Processing
Abstract

Transformer-based models have led to significant innovation in classical and practical subjects as varied as speech processing, natural language processing, and computer vision. On top of the Transformer, attention-based end-to-end automatic speech recognition (ASR) models have recently become popular. Specifically, non-autoregressive modeling, which boasts fast inference and performance comparable to conventional autoregressive methods, is an emerging research topic. In the context of natural language processing, the bidirectional encoder representations from Transformers (BERT) model has received widespread attention, partially due to its ability to infer contextualized word representations and to enable superior performance for downstream tasks while needing only simple fine-tuning. Motivated by the success, we intend to view speech recognition as a downstream task of BERT, thus an ASR system is expected to be deduced by performing fine-tuning. Consequently, to not only inherit the advantages of non-autoregressive ASR models but also enjoy the benefits of a pre-trained language model (e.g., BERT), we propose a non-autoregressive Transformer-based end-to-end ASR model based on BERT. We conduct a series of experiments on the AISHELL-1 dataset that demonstrate competitive or superior results for the model when compared to state-of-the-art ASR systems.

Published
2021
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129. Effect of Pore Blockage on Transpiration Cooling of Marine Turbine Blades

Author

Sun, Haiou, Ma, Hongfei, Yan, Lanyi, Fu, Hao, Luan, Yigang, Magagnato, Franco, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, and Yang, Desen, editor

Published
2023
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131. Application of 'Green and Low Carbon' in the Design of Expressway Service Area

Author

Fu, Hao, Liang, Defei, Li, Peng, Yang, Peng, Gao, Kang, Dou, Runliang, Editor-in-Chief, Liu, Jing, Editor-in-Chief, Khasawneh, Mohammad T., Editor-in-Chief, Balas, Valentina Emilia, Series Editor, Bhowmik, Debashish, Series Editor, Khan, Khalil, Series Editor, Masehian, Ellips, Series Editor, Mohammadi-Ivatloo, Behnam, Series Editor, Nayyar, Anand, Series Editor, Pamucar, Dragan, Series Editor, Shu, Dewu, Series Editor, Akhtar, Nadeem, editor, Draman, Azah Kamilah, editor, and Abdollah, Mohd Faizal, editor

Published
2023
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132. Numerical Analysis on Thermal Management Performance of Lithium-Ion Battery Pack with Liquid Cooling

Author

Zeng, Junxiong, Fu, Hao, Feng, Shuai, Lai, Chenguang, Song, Jie, Fu, Lijuan, Chen, Hu, Gao, Tieyu, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Sun, Fengchun, editor, Yang, Qingxin, editor, Dahlquist, Erik, editor, and Xiong, Rui, editor

Published
2023
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133. A Systematic Comparison on Prevailing Intrusion Detection Models

Author

Liu, Jianxuan, Xue, Haotian, Wang, Junfeng, Hong, Shuo, Fu, Hao, Dib, Omar, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Takizawa, Hiroyuki, editor, Shen, Hong, editor, Hanawa, Toshihiro, editor, Hyuk Park, Jong, editor, Tian, Hui, editor, and Egawa, Ryusuke, editor

Published
2023
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134. LiDAR-Based High-Precision Mapping and GNSS-Denied Localiztion for UAV

Author

Tu, Zhiming, Fu, Hao, Sun, Zhenping, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Fu, Wenxing, editor, Gu, Mancang, editor, and Niu, Yifeng, editor

Published
2023
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135. EasyNUSC: An Efficient Heterogeneous Computing Framework for Non-uniform Sampling Two-Dimensional Convolution Applications

Author

Lu, Yu, Yu, Ce, Xiao, Jian, Wang, Hao, Fu, Hao, Tang, Shanjiang, Kang, Bo, Zheng, Gang, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Meng, Weizhi, editor, Lu, Rongxing, editor, Min, Geyong, editor, and Vaidya, Jaideep, editor

Published
2023
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136. Long-Term Fairness Scheduler for Pay-as-You-Use Cache Sharing Systems

Author

Zhou, Zhongyu, Tang, Shanjiang, Fu, Hao, Chang, Wanqing, Yu, Ce, Sun, Chao, Li, Yusen, Xiao, Jian, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Meng, Weizhi, editor, Lu, Rongxing, editor, Min, Geyong, editor, and Vaidya, Jaideep, editor

Published
2023
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149. Development and Validation of an Automatic Ultrawide-Field Fundus Imaging Enhancement System for Facilitating Clinical Diagnosis: A Cross-sectional Multicenter Study

Author

Wei, Qiaoling, Gu, Zhuoyao, Tan, Weimin, Kong, Hongyu, Fu, Hao, Jiang, Qin, Zhuang, Wenjuan, Zhang, Shaochi, Feng, Lixia, Liu, Yong, Li, Suyan, Qin, Bing, Lu, Peirong, Zhao, Jiangyue, Li, Zhigang, Yuan, Songtao, Yan, Hong, Zhang, Shujie, Zhu, Xiangjia, Hong, Jiaxu, Zhao, Chen, and Yan, Bo

Published
2024
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150. Safety, dosimetry, and efficacy of an optimized long-acting somatostatin analog for peptide receptor radionuclide therapy in metastatic neuroendocrine tumors: From preclinical testing to first-in-human study

Author

Guo, Wei, Wen, Xuejun, Chen, Yuhang, Zhao, Tianzhi, Liu, Jia, Tao, Yucen, Fu, Hao, Wang, Hongjian, Xu, Weizhi, Pang, Yizhen, Zhao, Liang, Huang, Jingxiong, Xu, Pengfei, Guo, Zhide, Miao, Weibing, Zhang, Jingjing, Chen, Xiaoyuan, and Chen, Haojun

Published
2024
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