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第十八届中国计算语言学大会暨中国中文信息学会2019学术年会

作者： Xiaoting Wu Hanyu Zhao Lei Jing Chao Che State Grid Info & Telecom Group Beijing China-Power Information Technology Co. LTDBeijingChina Key Laboratory of Advanced Design and Intelligent Computing Ministry of EducationDalian University Chiping Vocational Education School LiaochengChina

ISBN: (纸本)9783030323806

Term translation of Chinese historical classics is very difficult and time-consuming work,and using term alignment methods to extract term translation pairs is of great help for historical term ***,the limited bilingual corpora resources of historical classics and special morphology of the ancient Chinese result in poor performance of term *** this end,this paper proposes a historical term alignment method using modern Chinese as a pivot *** method first identifies English terms by rules,then aligns them from English to modern Chinese and then from modern Chinese to ancient *** use of English-modern Chinese corpus and modern-ancient Chinese corpus instead of English-ancient Chinese corpus solves the shortage problem of the parallel ***,using modern Chinese as a pivot language effectively reduces the alignment errors caused by the abbreviations and the interchangeable characters of ancient *** the term alignment experiment on Shiji,our method outperformed the direct alignment method significantly,which proves the validity of our method.

关键词： Chinese Historical Classics Term Alignment Pivot Language

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A Study of Topology Analysis Engine Based on Graph Databases in Electric Utilities 2

A Study of Topology Analysis Engine Based on Graph Databases...

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2017 IEEE 2nd Information Technology, Networking, Electronic and Automation Control Conference (ITNEC 2017)

作者： Bo CHAI Hongbin QIU Siyan LIU Bo ZHANG Kunlun GAO Aihua ZHOU Feng CHEN Advanced Computing and Big Data Laboratory Global Energy Interconnection Research Institute State Grid Corporation of China State Grid Anhui Electric Power Company

ISBN: (纸本)9781509064151;9781509064144

In this paper, we aim at designing topology search engine based on graph databases. Compared with traditional relational graph databases, graph databases are potential solutions to analyzing large-scale highly-connected data. Firstly,we propose an analysis framework of topology search engine based on graph databases. Secondly, the three chosen topology search functions, i.e., electrified state initialization, branch outage simulation and power supply range analysis are realized in the topology search engine. Thirdly, a group of simulations are conducted to compare the performances of the topology search functions between graph databases and relational databases.

关键词： Graph database topology search engine electrified state initialization branch outage simulation power supply range analysis

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Band Structure Engineering of Black Phosphorus/Graphene/MoS2 van der Waals Heterojunctions for Photovoltaic and Optoelectronic Device Application

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Journal of Physics: Conference Series 2021年第2期1865卷

作者： Wenhuan Zhu Lingwei Kong Wei Long Xianglei Shi Dayong Zhou Lijie Sun Lihua Zhou Guiting Yang Xiaodong Liu Hai Liu Maolin Bo Xiaoqiang Hou Department of Micro/Nano Electronics School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai China State Grid Nanchong Power Supply Company Nanchong China State Key Laboratory of Space Power-Sources Technology Shanghai China Shanghai Institute of Space Power-Sources Shanghai China Guizhou Space Appliance Co. Ltd. Guizhou China Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai University Shanghai China Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology (EBEAM) of Chongqing Yangtze Normal University Chongqing China

In this paper, we study the band structure engineering of black phosphorus/graphene/MoS2 (BP/graphene/MoS2) van der Waals heterojunctions based on ab initio simulations. The density of state and charge density of BP/MoS2, bilayer-BP/MoS2, bilayer-BP/graphene/MoS2 and graphene/bilayer-BP/MoS2 heterojunctions are also investigated. It is found that the bandgaps of these four heterojunctions are smaller than the case of single layer BP or MoS2. When graphene is inserted into or stacked upon BP and MoS2 layers, the heterojunction can obtain a minimum bandgap and a higher density of state distribution. In the differential charge density diagram, electrons over the carbon, sulfur and phosphorus atoms are lost from those corresponding parts. These investigations based on the band structure engineering of 2D van der Waals heterojunctions can provide an effective guidance to manufacture the future nanoscale high performance photovoltaic and optoelectronic devices.

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The Future of Graph Database applications: An Electric Utility Perspective 2

The Future of Graph Database Applications: An Electric Utili...

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2017 IEEE 2nd Information Technology, Networking, Electronic and Automation Control Conference (ITNEC 2017)

作者： Siyan Liu Guoqiang Lin Bo Chai Jiangpeng Dai Aihua Zhou Feng Chen Jing Pan Advanced Computing and Big Data Laboratory Global Energy Interconnection Research Institute State Grid Anhui Electric Power Company

ISBN: (纸本)9781509064151;9781509064144

With the development of smart grid, renewable energy, as well as electric vehicle technique, plenty of primary and secondary devices are plugged into the power grid. However, the large amount of data generated by these devices cause problems. Relational databases can hardly deal with large-scale topological data. Therefore, graph database may be a better alternative to relational database. This paper describes graph database application scenarios in electric utilities, including topological search, vulnerability analysis, and enterprise relationship management. Among the scenarios, topological search is our existing study. Despite the lack of systematic implementation, we introduced graph database as a novel database management system into electrical engineering.

关键词： graph database enterprise software topology analysis

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Mimic Defense Structured Information System Threat Identification and Centralized Control

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Journal of Physics: Conference Series 2019年第3期1187卷

作者： Bo Zhang Weichao Li Xin Sun Yufeng Zhao State Grid Key Laboratory of Information & Network Security Nanjing China State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou China State Grid Zhejiang Electric Power Research Institute Hangzhou China

With the speeding up of the informatization process of our national economy and social development, the degree of informatization in our country is getting higher and higher. Information system has become the key infrastructure of our country. The security of these basic information networks and important information systems has been seriously related to national security and social stability, to the collective interests of enterprises, and to the vital interests of the broad masses of the people. Increasing application in improving work efficiency and economic benefits at the same time, the increasingly com-plex information system has also brought greater challenges to operation and maintenance managers. The use of known or unknown vulnerabilities, causing damage to information systems, stealing sensitive information, endangering the normal operation of business systems and other behaviors, has become one of the main causes of various security incidents. How to effectively deal with the vulnerability threat and various vulnerability problems of enterprise information systems, concentrate on the implementation of information security vulnerability warning related risks, and provide solutions to related vulnerability threats, have become an urgent problem to be solved. Therefore, we construct the mimic structured enterprise information system by establishing the threat identification system through unified management to form a comprehensive and secure cyber threat management system.

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Binary semantic Similarity Comparison based on software gene

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Journal of Physics: Conference Series 2019年第1期1325卷

作者： Wenjie Sun Yihang Chen Zheng Shan Fudong liu Qiuna Wang State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou China Materials branch of State Grid Henan Electric Power Company Zhengzhou China

The similarity of binary code is widely used in code copyright protection, vulnerability mining, malicious code analysis and etc. In this paper, we proposed a method for measuring/evaluating the similarity of two binary files based on software genes. Some of Natural language processing methods were introduced into program semantics analysis, including word2vec and doc2vec models to generate assembly instruction embeddings and gene semantic embeddings. Then the longest common subsequence method was applied to evaluate the software similarity. Experiments show that our method can effectively evaluate the similarity of binary files.

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Community detection in power grids based on Louvain heuristic algorithm

Community detection in power grids based on Louvain heuristi...

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2017 IEEE Conference on Energy Internet and Energy System Integration, EI2 2017

作者： Lin, Guoqiang Liu, Siyan Zhou, Aihua Dai, Jiangpeng Chai, Bo Zhang, Bo Qiu, Hongbin Gao, Kunlun Song, Yan Chen, Rui Advanced Computing and Big Data Laboratory Global Energy Interconnection Research Institute State Grid Corporation of China Beijing China State Grid Shanghai Electric Power Research Institute Shanghai China

ISBN: (纸本)9781538614273

The statistical tools of complex network analysis and the development of complex network theory offer a new approach into the exploration of complex power grids. As the capacity of power grid increases, grid structure becomes more and more complicated and to some extent that will impair our perception of power grids. Hence in this paper we apply Louvain heuristic algorithm to detecting community structure of power grids. We find that IEEE 118-bus system is of significant strong community structure, with the modularity reaching 0.8. Besides, when we use reciprocal of reactance as the weight of edge, the modularity of the network is larger than that of homogenous weight of edge. This implies that reactance can help reveal the community structure. Community detection may shed light on our understanding on the configuration of the power grids. © 2017 IEEE.

关键词： Statistical mechanics

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Fault Range Analysis of Information and Communications Assets in Power grid: A Graph Data Perspective

Fault Range Analysis of Information and Communications Asset...

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2017 International Conference on Applied Mathematics, Modelling and Statistics Application（AMMSA2017）

作者： Bo Chai Siyan Liu Jiangpeng Dai Ting Zhao Aihua Zhou Kunlun Gao Advanced Computing and Big Data Laboratory Global Energy Interconnection Research Institute State Grid Corporation of China

In this paper, information and communication assets in the power grid are modeled as graph data. A graph database, Neo4j, is chosen to capturing the connections that could help to analyze fault ranges. Based on breadth-first search, recursion terminations are designed to obtain the fault range from the failed nodes. Two cases are given in the paper, and more cases will be further considered in the future work. In final, we provide the analysis results and shows the advantage of graph databases.

关键词： graph data fault range analysis Neo4j breadth-first search

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Research on Loop Detection of Power grid Equipment Based on Graph Database

Research on Loop Detection of Power Grid Equipment Based on ...

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2017 2nd International Conference on Automation, Mechanical and Electrical Engineering (AMEE2017)

作者： Hongbin Qiu Aihua Zhou Kunlun Gao Jiangpeng Dai Bo Chai Bo Zhang Advanced Computing and Big Data Laboratory Global Energy Interconnection Research Institute State Grid Corporation of China

this paper presents a method of power grid loop detection based on graph database. The topology concept is introduced to extract the network relationship from the power grid equipment. The devices and power lines in the power grid correspond to the vertices in the topological graph, and the connection relation between the grid devices corresponds to the edges in the topological graph. The topological graph data model is generated by establishing the edges of connected vertices and stored in graph database. The loop detection of power grid equipment is divided into ordinary topological loop detection and multi-power loop detection, using the degree reduce algorithm and union-find sets to achieve the ordinary loop detection, and using the breadth first search algorithm to achieve the multipower loop detection. For large-scale power grid, the efficiency of power grid loop detection based on graph database can be 10 times higher than relational database.

关键词： topological graph graph database loop detection power grid

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Cyber-physical security assessment and simulation based on graph database

Cyber-physical security assessment and simulation based on g...

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2017 IEEE Conference on Energy Internet and Energy System Integration, EI2 2017

作者： Wang, Di Guo, Qinglai Song, Yan Gao, Kunlun Zhou, Aihua State Key Laboratory of Power Systems Department of Electrical Engineering Tsinghua University Beijing100084 China Electric Power Research Institute State Grid Shanghai Municipal Electric Power Company Shanghai200437 China Advanced Computing and Big Data Laboratory of SGCC Global Energy Interconnection Research Institute Beijing102209 China

ISBN: (纸本)9781538614273

With the development of information technology, the operation of power grid increasingly depends upon the support of strong communication network. The power system consisting of grids infrastructure and communication equipment is a typical cyber-physical system(CPS). In recent years, power accidents that information-side failure impacts on physical operation happen at times. In order to simulate the impacts of information failure on grid operation, we develop a cyber-physical simulation tool for the secondary-voltage control of power system to implement the reasonable analysis and evaluation of the influence of different types of information failure on voltage control effect. In this paper, the graph database is introduced to construct the basic cyber-physical data model as an important part of the simulation tool, whose graphical modeling and management is friendly for users. In addition, the importance of different types of information is analyzed with the tool. It can be seen that the voltage information is more fragile and critical than the non-independent generator reactive information. © 2017 IEEE.

关键词： Cyber Physical System

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