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Volume 25 No. 1
05 February 2020

Guangzhe Zhao, Aiguo Chen, Guangxi Lu, Wei Liu

2020, 25(1): 12-19.   doi:10.26599/TST.2018.9010138
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In cyber-physical systems, multidimensional data fusion is an important method to achieve comprehensive evaluation decisions and reduce data redundancy. In this paper, a data fusion algorithm based on fuzzy set theory and Dempster-Shafer (D-S) evidence theory is proposed to overcome the shortcomings of the existing decision-layer multidimensional data fusion algorithms. The basic probability distribution of evidence is determined based on fuzzy set theory and attribute weights, and the data f...

Kuai Xu, Feng Wang, Haiyan Wang, Bo Yang

2020, 25(1): 20-27.   doi:10.26599/TST.2018.9010139
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Fake news has recently leveraged the power and scale of online social media to effectively spread misinformation which not only erodes the trust of people on traditional presses and journalisms, but also manipulates the opinions and sentiments of the public. Detecting fake news is a daunting challenge due to subtle difference between real and fake news. As a first step of fighting with fake news, this paper characterizes hundreds of popular fake and real news measured by shares, reactions, an...

Donghyun Kim, Junggab Son, Daehee Seo, Yeojin Kim, Hyobin Kim, Jung Taek Seo

2020, 25(1): 28-43.   doi:10.26599/TST.2019.9010025
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This paper introduces a new fog-assisted cloud storage which can achieve much higher throughput compared to the traditional cloud-only storage architecture by reducing the traffics toward the cloud storage. The fog-storage service providers are transparency to end-users and therefore, no modification on the end-user devices is necessary. This new system is featured with (1) a stronger audit scheme which is naturally coupled with the proposed architecture and does not suffer from the replay at...

Ji Li, Madhuri Siddula, Xiuzhen Cheng, Wei Cheng, Zhi Tian, Yingshu Li

2020, 25(1): 44-55.   doi:10.26599/TST.2019.9010023
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As Internet-of-Things (IoT) networks provide efficient ways to transfer data, they are used widely in data sensing applications. These applications can further include wireless sensor networks. One of the critical problems in sensor-equipped IoT networks is to design energy efficient data aggregation algorithms that address the issues of maximum value and distinct set query. In this paper, we propose an algorithm based on uniform sampling and Bernoulli sampling to address these issues. We hav...

Jianqiang Huang, Wentao Han, Xiaoying Wang, Wenguang Chen

2020, 25(1): 56-67.   doi:10.26599/TST.2018.9010112
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A Weighted Essentially Non-Oscillatory scheme (WENO) is a solution to hyperbolic conservation laws, suitable for solving high-density fluid interface instability with strong intermittency. These problems have a large and complex flow structure. To fully utilize the computing power of High Performance Computing (HPC) systems, it is necessary to develop specific methodologies to optimize the performance of applications based on the particular system’s architecture. The Sunway TaihuLight superco...

Jiaxi Gu, Jiliang Wang, Lan Zhang, Zhiwen Yu, Xiaozhe Xin, Yunhao Liu

2020, 25(1): 68-80.   doi:10.26599/TST.2019.9010004
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Camera-equipped mobile devices are encouraging people to take more photos and the development and growth of social networks is making it increasingly popular to share photos online. When objects appear in overlapping Fields Of View (FOV), this means that they are drawing much attention and thus indicates their popularity. Successfully discovering and locating these objects can be very useful for many applications, such as criminal investigations, event summaries, and crowdsourcing-based Geogr...

Yudong Qin, Deke Guo, Xu Lin, Geyao Cheng

2020, 25(1): 81-92.   doi:10.26599/TST.2018.9010105
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Visible-Light Communication (VLC) has the potential to provide dense and fast connectivity at low cost. In this paper we propose SFNet, a novel VLC-enabled hybrid data center network that extends the design of wireless Data Center Networks (DCNs) into three further dimensions: (1) fully wireless at the inter-rack level; (2) no need for a centralized control mechanism on wireless links; and (3) no need for any infrastructure-level alterations to data centers. Previous proposals typically canno...

Wen Zhou, Jinyuan Jia, Chengxi Huang, Yongqing Cheng

2020, 25(1): 93-102.   doi:10.26599/TST.2018.9010113
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With the rapid development of Web3D technologies, sketch-based model retrieval has become an increasingly important challenge, while the application of Virtual Reality and 3D technologies has made shape retrieval of furniture over a web browser feasible. In this paper, we propose a learning framework for shape retrieval based on two Siamese VGG-16 Convolutional Neural Networks (CNNs), and a CNN-based hybrid learning algorithm to select the best view for a shape. In this algorithm, the AlexNet...

Tun Li, Qinhan Yu, Hai Wan, Sikun Li

2020, 25(1): 103-116.   doi:10.26599/TST.2018.9010136
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Soft errors have become a critical challenge as a result of technology scaling. Existing circuit-hardening techniques are commonly associated with prohibitive overhead of performance, area, and power. However, evaluating the influence of soft errors in Flip-Flops (FFs) on the failure of circuit is a difficult verification problem. Here, we proposed a novel flip-flop soft-error failure rate analysis methodology using a formal method with respect to application behaviors. Approach and optimizat...

Xu Han, Binyang Li, Zhuoran Wang

2020, 25(1): 117-126.   doi:10.26599/TST.2019.9010022
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Uncertainty identification is an important semantic processing task. It is crucial to the quality of information in terms of factuality in many applications, such as topic detection and question answering. Factuality has become a premier concern especially in social media, in which texts are written informally. However, existing approaches that rely on lexical cues suffer greatly from the casual or word-of-mouth peculiarity of social media, in which the cue phrases are often expressed in subs...

Jiayang Li, Yi Zhang, Mengkai Shi, Qi Liu, Yi Chen

2020, 25(1): 127-139.   doi:10.26599/TST.2018.9010143
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We analyzed and improved a collision avoidance strategy, which was supported by Long Term Evolution-Vehicle (LTE-V)-based Vehicle-to-Vehicle (V2V) communication, for automated vehicles. This work was completed in two steps. In the first step, we analyzed the probability distribution of message transmission time, which was conditional on transmission distance and vehicle density. Our analysis revealed that transmission time exhibited a near-linear increase with distance and density. We also qu...

Pei Zhang, Changqing An, Zhanfeng Wang, Fengyuan Ma

2020, 25(1): 140-148.   doi:10.26599/TST.2019.9010002
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The performance of Internet applications is heavily affected by the end-to-end available bandwidth. Thus, it is very important to examine how to accurately predict the available Internet bandwidth. A number of available bandwidth prediction algorithms have been proposed to date, but none of the existing solutions are able to achieve a high level of accuracy. In this paper, a Multi-manifold based Available Bandwidth prediction algorithm (MD-AVB) is proposed, based on the observation that the a...

Gang Li, Yi Zhao, Ling Zhang, Xingwei Wang, Yueqin Zhang, Fayun Guo

2020, 25(1): 149-160.   doi:10.26599/TST.2019.9010026
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This paper proposes a parameter adaptive hybrid model for image segmentation. The hybrid model combines the global and local information in an image, and provides an automated solution for adjusting the selection of the two weight parameters. Firstly, it combines an improved local model with the global Chan-Vese (CV) model , while the image’s local entropy is used to establish the index for measuring the image’s gray-level information. Parameter adjustment is then performed by the real-time a...

Jiachen Yang, Chaofan Ma, Jiabao Man, Huifang Xu, Gan Zheng, Houbing Song

2020, 25(1): 1-11.   doi:10.26599/TST.2018.9010137
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The proliferation of mobile devices that support the acceleration of data services (especially smartphones) has resulted in a dramatic increase in mobile traffic. Mobile data also increased exponentially, already exceeding the throughput of the backhaul. To improve spectrum utilization and increase mobile network traffic, in combination with content caching, we study the cooperation between primary and secondary networks via content caching. We consider that the secondary base station assists...