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关于学校和教师搜查学生的相关法律问题研究
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作者 解立军 《中国人民大学教育学刊》 2019年第2期35-50,共16页
搜查学生是学校和教师管教行为的一环,是教师专业自主权的应有内涵。一般情况下,启动对学生的搜查,必须有合理理由让人相信,搜查将发现学生违反或正在违反法律或学校纪律的证据,形成对学生违法违纪的合理怀疑。学校和教师搜查前不需要... 搜查学生是学校和教师管教行为的一环,是教师专业自主权的应有内涵。一般情况下,启动对学生的搜查,必须有合理理由让人相信,搜查将发现学生违反或正在违反法律或学校纪律的证据,形成对学生违法违纪的合理怀疑。学校和教师搜查前不需要取得检查证或者搜查证,否则将会严重影响纪律处分程序的灵活性和及时性。搜查学生行为的常见类型有人身搜查,非随身书包、行李箱等私人物品的搜查,宿舍搜查,借助金属探测器实施的搜查和学生同意的搜查。无论哪种类型搜查,都应遵循比例性原则、保密原则、不得异性搜查学生身体原则和实施搜查的教师不得少于两人原则。学校和教师对搜查所发现的违禁品,应根据违禁品的性质等实际情形做出不同的处理。 展开更多
关键词 搜查 检查 搜查依据 搜查条件 搜查原则
PVSS:A Progressive Vehicle Search System for Video Surveillance Networks
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作者 Xin-Chen Liu Wu Liu +1 位作者 Hua-Dong Ma Shuang-Qun Li 《计算机科学技术学报:英文版》 SCIE EI CSCD 2019年第3期634-644,共11页
This paper is focused on the task of searching for a specific vehicle that appears in the surveillance networks.Existing methods usually assume the vehicle images are well cropped from the surveillance videos,and then... This paper is focused on the task of searching for a specific vehicle that appears in the surveillance networks.Existing methods usually assume the vehicle images are well cropped from the surveillance videos,and then use visual attributes,like colors and types,or license plate numbers to match the target vehicle in the image set.However,a complete vehicle search system should consider the problems of vehicle detection,representation,indexing,storage,matching,and so on.Besides,it is very difficult for attribute-based search to accurately find the same vehicle due to intra-instance changes in different cameras and the extremely uncertain environment.Moreover,the license plates may be mis-recognized in surveillance scenes due to the low resolution and noise.In this paper,a progressive vehicle search system,named as PVSS,is designed to solve the above problems.PVSS is constituted of three modules:the crawler,the indexer,and the searcher.The vehicle crawler aims to detect and track vehicles in surveillance videos and transfer the captured vehicle images,metadata and contextual information to the server or cloud.Then multi-grained attributes,such as the visual features and license plate fingerprints,are extracted and indexed by the vehicle indexer.At last,a query triplet with an input vehicle image,the time range,and the spatial scope is taken as the input by the vehicle searcher.The target vehicle will be searched in the database by a progressive process.Extensive experiments on the public dataset from a real surveillance net work validate the effec tiveness of PVSS. 展开更多
关键词 MULTI-MODAL data analysis PROGRESSIVE SEARCH system VEHICLE SEARCH VIDEO SURVEILLANCE network
UAV’s Coverage Search Planning Algorithm Based on Action Combinations
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作者 陈仔荣 鲁亚飞 +1 位作者 侯中喜 王俊伟 《上海交通大学学报:英文版》 EI 2019年第1期48-57,共10页
The autonomous route planning in coverage search is an important subject of unmanned aerial vehicle(UAV) mission planning. Pre-planning is simple and feasible for the coverage search mission of single UAV in regular a... The autonomous route planning in coverage search is an important subject of unmanned aerial vehicle(UAV) mission planning. Pre-planning is simple and feasible for the coverage search mission of single UAV in regular areas. As to the dynamic mission in complicated environment of multi-UAV, the route planning will encounter the difficulties of reasonable task distribution and the real-time environment changes which include the changes of the mission area, the detection of threat area, the interference of communication and so on. At this point, making the UAV to do real-time autonomous planning is necessary. However, it is hard to fulfil requirements of real-time, autonomous and efficient at the same time. According to a scalable knowledge base,this paper proposes a coverage search algorithm which is based on the mapping between the basic behavior combination and surroundings. A UAV’s coverage search simulation model with random shapes is built with a discrete map to update the environment and the changes of the mission on time. Comparison of the simulation analysis and the dynamic programming shows that the method has amazing expandability and can change the search strategy feasibly. It is efficient, and the ratio of coverage redundancy can be decreased to 1.21. It also has the potentiality in real-time calculation, and the computing time can be shortened to about 2 s. 展开更多
关键词 unmanned AERIAL vehicle(UAV) COVERAGE SEARCH action COMBINATIONS SEARCH strategy dynamic PROGRAMMING
A Novel Search Engine for Internet of Everything Based on Dynamic Prediction 预览
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作者 Hui Lu Shen Su +1 位作者 Zhihong Tian Chunsheng Zhu 《中国通信:英文版》 SCIE CSCD 2019年第3期42-52,共11页
In recent years,with the rapid development of sensing technology and deployment of various Internet of Everything devices,it becomes a crucial and practical challenge to enable real-time search queries for objects,dat... In recent years,with the rapid development of sensing technology and deployment of various Internet of Everything devices,it becomes a crucial and practical challenge to enable real-time search queries for objects,data,and services in the Internet of Everything.Moreover,such efficient query processing techniques can provide strong facilitate the research on Internet of Everything security issues.By looking into the unique characteristics in the IoE application environment,such as high heterogeneity,high dynamics,and distributed,we develop a novel search engine model,and build a dynamic prediction model of the IoE sensor time series to meet the real-time requirements for the Internet of Everything search environment.We validated the accuracy and effectiveness of the dynamic prediction model using a public sensor dataset from Intel Lab. 展开更多
关键词 IoE SEARCH ENGINE IoE security REAL-TIME SEARCH MODEL dynamic PREDICTION MODEL time series PREDICTION
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Cursor momentum for fascination measurement
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作者 Yu HONG Kai WANG +2 位作者 Weiyi GE Yingying QIU Guodong ZHOU 《中国计算机科学前沿:英文版》 SCIE EI CSCD 2019年第2期396-412,共17页
We present a very different cause of search engine user behaviors ——fascination. It is generally identified as the initial effect of a product attribute on users' interest and purchase intentions. Considering th... We present a very different cause of search engine user behaviors ——fascination. It is generally identified as the initial effect of a product attribute on users' interest and purchase intentions. Considering the fact that in most cases the cursor is driven directly by a hand to move via a mouse (or touchpad), we use the cursor movement as the critical feature to analyze the personal reaction against the fascinating search results. This paper provides a deep insight into the goal-directed cursor movement that occurs within a remarkably short period of time (<30 milliseconds), which is the interval between a user's click-through and decision-making behaviors. Instead of the fundamentals, we focus on revealing the characteristics of the split-second cursor movement. Our empirical findings showed that a user may push or pull the mouse with a slightly greater strength when fascinated by a search result. As a result, the cursor slides toward the search result with an increased momentum. We model the momentum through a combination of translational and angular kinetic energy calculations. Based on Fitts' law, we implement goal-directed cursor movement identification. Supported by the momentum, together with other physical features, we built different fascination-based search result reranking systems. Our experiments showed that goal-directed cursor momentum is an effective feature in detecting fascination. In particular, they show feasibility in both the personalized and cross-media cases. In addition, we detail the advantages and disadvantages of both click-through rate and cursor momentum for re-ranking search results. 展开更多
关键词 fascination MEASUREMENT USER-ORIENTED SEARCH user behavior goal-directed CURSOR movement SEARCH result RE-RANKING
Design of Railway Computer Interlocking Search Algorithm and Implementation of Interlocking Software 预览
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作者 DONG Decun WANG Xiaonong HE Yunpeng 《国际设备工程与管理:英文版》 2019年第2期73-80,共8页
The computer interlocking system has a wide application in realizing interlocking control between the switch, the signal, and the track circuit in station. Due to the similarity between the binary tree and the station... The computer interlocking system has a wide application in realizing interlocking control between the switch, the signal, and the track circuit in station. Due to the similarity between the binary tree and the station-type data structure, the actual station route search method and the recursive algorithm are combined inorder to realize the computer interlocking route search. On this basis, through the design of switch class, track circuit class and signal machine class, by using C++ object-oriented the management of station data structure and entity object are realized, and then the crowding alarm, switch operations and so on in computer interlocking software. Taking the implementation of 5# station computer interlocking software as an example and based on are realized C++ the object-oriented computer interlocking software is written to provide a reference for realizing the railway computer interlocking training system function. 展开更多
关键词 computer INTERLOCKING CLUSTER SEARCH ROUTE SEARCH OBJECT-ORIENTED
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浅谈对包含电路的专利申请的检索策略 预览
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作者 高辉辉 李慧 《科技资讯》 2019年第17期207-209,共3页
电学领域的专利申请很多都涉及电路,这类专利的权利要求请求保护电路的连接关系,针对包含整个电路连接关系的权利要求的特点,笔者分析了其检索难点,并总结归纳出相应的检索策略,在实际中着手电路主要模块,从电路效果入手,以达到事半功... 电学领域的专利申请很多都涉及电路,这类专利的权利要求请求保护电路的连接关系,针对包含整个电路连接关系的权利要求的特点,笔者分析了其检索难点,并总结归纳出相应的检索策略,在实际中着手电路主要模块,从电路效果入手,以达到事半功半的效果,最后结合实际案例深入阐明、分析了如何采用上述策略进行有效检索. 展开更多
关键词 专利申请 电路 检索
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Enhanced Autonomous Exploration and Mapping of an Unknown Environment with the Fusion of Dual RGB-D Sensors 预览
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作者 Ningbo Yu Shirong Wang 《工程(英文)》 2019年第1期164-172,共9页
The autonomous exploration and mapping of an unknown environment is useful in a wide range of applications and thus holds great significance. Existing methods mostly use range sensors to generate twodimensional (2D) g... The autonomous exploration and mapping of an unknown environment is useful in a wide range of applications and thus holds great significance. Existing methods mostly use range sensors to generate twodimensional (2D) grid maps. Red/green/blue-depth (RGB-D) sensors provide both color and depth information on the environment, thereby enabling the generation of a three-dimensional (3D) point cloud map that is intuitive for human perception. In this paper, we present a systematic approach with dual RGB-D sensors to achieve the autonomous exploration and mapping of an unknown indoor environment. With the synchronized and processed RGB-D data, location points were generated and a 3D point cloud map and 2D grid map were incrementally built. Next, the exploration was modeled as a partially observable Markov decision process. Partial map simulation and global frontier search methods were combined for autonomous exploration, and dynamic action constraints were utilized in motion control. In this way, the local optimum can be avoided and the exploration efficacy can be ensured. Experiments with single connected and multi-branched regions demonstrated the high robustness, efficiency, and superiority of the developed system and methods. 展开更多
关键词 AUTONOMOUS EXPLORATION Red/green/blue-depth Sensor fusion Point cloud Partial map simulation Global FRONTIER search
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信号传输领域关键词检索策略浅析 预览
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作者 双维芳 张辉 《中国发明与专利》 2019年第6期104-109,共6页
本文首先介绍了信号传输领域专利申请的范围和特点,分析了该领域发明专利的检索难点。针对该领域的两类典型权利要求,即较长的方法类权利要求和涉及电路结构的装置类权利要求,提出了相应的检索策略,并通过具体案例对如何准确提取关键词... 本文首先介绍了信号传输领域专利申请的范围和特点,分析了该领域发明专利的检索难点。针对该领域的两类典型权利要求,即较长的方法类权利要求和涉及电路结构的装置类权利要求,提出了相应的检索策略,并通过具体案例对如何准确提取关键词进行了分析,提出了一些可实际操作的检索技巧。 展开更多
关键词 信号传输 采集 控制 关键词 检索
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Linear random search and engineering estimation of sinkage for launching carrier aircraft
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作者 ZHONG Guo HUANG Jun +1 位作者 ZHOU ZeYang YI MingXu 《中国科学:技术科学英文版》 SCIE EI CAS CSCD 2019年第6期996-1002,共7页
A linear random search algorithm(LRSA) is developed to determine the critical value of takeoff weight limited to the safe flight track sinkage and an engineering estimation method(EEM) is proposed to calculate the sin... A linear random search algorithm(LRSA) is developed to determine the critical value of takeoff weight limited to the safe flight track sinkage and an engineering estimation method(EEM) is proposed to calculate the sinkage of carrier aircraft launch in real time. Based on the analysis of free flight after leaving the carrier, the equations are established to participate into engineering estimation of flight track sinkage. Thanks to the proposed search algorithm, the maximum takeoff weight of carrier aircraft with safe catapult launch flight track sinkage is generated in few steps. The results of sinkage estimation and the search algorithm are in good agreement with that of aircraft catapult launch simulation. The main contribution of this manuscript is the establishment of simple and accurate engineering estimation for carrier aircraft launch flight track sinkage and the development of robust and efficient search algorithm for the critical value with safe catapult criteria. 展开更多
关键词 carrier aircraft LAUNCH flight track SINKAGE ENGINEERING ESTIMATION LINEAR random search simulation
分布式搜索引擎中关键词倒排索引方法仿真 预览
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作者 黄立冬 《计算机仿真》 北大核心 2019年第8期380-383,398共5页
针对当前信息检索方法存在的检索效率低、检索过程安全性和准确性差的问题,提出分布式搜索引擎中关键词倒排索引方法。以倒排索引理论分析为依据,构建关键词倒排索引体系,并解析索引中的关键技术。使用该技术将多种特征向量构建的超向... 针对当前信息检索方法存在的检索效率低、检索过程安全性和准确性差的问题,提出分布式搜索引擎中关键词倒排索引方法。以倒排索引理论分析为依据,构建关键词倒排索引体系,并解析索引中的关键技术。使用该技术将多种特征向量构建的超向量当作文档特征提取出来,将取值不同的各维特征向量归一化。提取特征后,将各维特征均值与标准差作为规整向量,完成文档特征规整。依据特征特征规整,利用模糊K均值聚类法生成检索词典。分析词典,构建明文倒排索引文档,对文档中相关记录信息加密,生成密文文档并构建密文文档倒排索引。索引服务器根据CRC32算法处理密文索引词,利用特征提取技术将索引词划分成不同段,根据词典将其转换成字序列用于检索,以命中关键词在每个候选文档中占据的比例当作检索词与全部候选文档相似程度的判定依据,将相似度值按从大到小顺序排列,将排列结果返给用户,完成一次索引。实验结果表明,上述方法检索耗时短、安全系数高,检索结果准确性优于当前方法,适用性强。 展开更多
关键词 分布式 搜索 关键词 索引
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Quantum Algorithm Design:Techniques and Applications
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作者 SHAO Changpeng LI Yang LI Hongbo 《系统科学与复杂性学报:英文版》 SCIE EI CSCD 2019年第1期375-452,共78页
In recent years,rapid developments of quantum computer are witnessed in both the hardware and the algorithm domains,making it necessary to have an updated review of some major techniques and applications in quantum al... In recent years,rapid developments of quantum computer are witnessed in both the hardware and the algorithm domains,making it necessary to have an updated review of some major techniques and applications in quantum algorithm design. In this survey as well as tutorial article,the authors first present an overview of the development of quantum algorithms,then investigate five important techniques:Quantum phase estimation,linear combination of unitaries,quantum linear solver,Grover search,and quantum walk,together with their applications in quantum state preparation,quantum machine learning,and quantum search.In the end,the authors collect some open problems influencing the development of future quantum algorithms. 展开更多
关键词 QUANTUM algorithm QUANTUM COMPUTATION QUANTUM MACHINE learning QUANTUM SEARCH QUANTUM WALK
QE-integrating framework based on Github knowledge and SVM ranking
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作者 Qing HUANG Huaiguang WU 《中国科学:信息科学(英文版)》 SCIE EI CSCD 2019年第5期92-107,共16页
The latest query expansion(QE) methods use the software development features for expanding queries. However, these methods allow only one feature to be considered at a time. To consider additional features simultaneou... The latest query expansion(QE) methods use the software development features for expanding queries. However, these methods allow only one feature to be considered at a time. To consider additional features simultaneously, we propose a QE method based on Github knowledge;this is a new comprehensive feature that covers both the existing features(i.e., the application program interface(API) information and crowd knowledge). It is extracted from the 'pull requests' of code repositories on Github, which contain descriptions of a request and its commits, the participants’ comments and the API information of the changed files. In addition, we implement a black-box framework that integrates multiple QE methods based on the support vector machine ranking called Github knowledge search repository(GKSR). Our empirical evaluation shows that the GKSR outperforms the state-of-the-art QE methods CodeHow and QECK by 25%–32% in terms of precision. 展开更多
关键词 code SEARCH QUERY expansion Github KNOWLEDGE SVM RANKING crowd KNOWLEDGE
混床树脂快速失效原因分析及处理办法 预览
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作者 申家君 《化工设计通讯》 CAS 2019年第6期4-4,27共2页
混床,即混合离子交换器,是二级除盐系统的关键设备,能使阴阳离子交换反应进行得十分彻底,出水水质很高.以中海石油华鹤煤化有限公司生产过程中实际发生的问题为依据,首先简单说明了混床快速失效的现象及产生的后果,接着介绍了失效原因... 混床,即混合离子交换器,是二级除盐系统的关键设备,能使阴阳离子交换反应进行得十分彻底,出水水质很高.以中海石油华鹤煤化有限公司生产过程中实际发生的问题为依据,首先简单说明了混床快速失效的现象及产生的后果,接着介绍了失效原因及处理办法,对脱盐水系统被污染原因的快速排查有很大的指导意义. 展开更多
关键词 混床 快速失效 原因分析 排查
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Experimental Evaluation of A New Developed Algorithm for An Autonomous Surface Vehicle and Comparison with Simulink Results 预览
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作者 Hossein MOUSAZADEH Ali KIAPEY 《中国海洋工程:英文版》 SCIE EI CSCD 2019年第3期268-278,共11页
Performing repeatable duties automatically was the dreams of human being for centuries. Although full autonomy has long been dreamed of by visionaries, many researches have been performed for surface vehicles automati... Performing repeatable duties automatically was the dreams of human being for centuries. Although full autonomy has long been dreamed of by visionaries, many researches have been performed for surface vehicles automation since the last century to get close to this dream stepwise. To increase daily working hours and accuracy and reduce cost, operations such as hydrography are susceptible for autonomy. Beside platform topology, installed sensors and energy resources, the core elements of any autonomous surface vehicle are navigation, guidance and control systems. To perform bathymetry operation in autonomy manner, a reliable and robust navigation algorithm is designed and embedded in an autonomous surface vehicle titled Morvarid. Morvarid is a plug-in hybrid solar powered catamaran boat. The developed algorithm is a combination of extended Kalman filter, search ball and potential field approaches. Many experimental field tests are carried out after simulation in Simulink environment. Test results illustrated the algorithm and improved the path followed by reducing SD and RMSE and there is a good correlation between simulation run and experimental tests. 展开更多
关键词 AUTONOMOUS surface vehicle extended KALMAN filter SEARCH ball TRAJECTORY tracking BATHYMETRY
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基于聊天机器人的知识库管理系统的研究 预览
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作者 周煜华 陈德胜 孙麒 《工业控制计算机》 2019年第9期124-126,共3页
随着互联网技术的不断革新,一些移动通信设备公司的产品线越加丰富,版本更多,信息量更大,为了解决运维人员在众多产品文档中查找文档效率低的问题,设计与实现了基于聊天机器人的知识库管理系统,关键模块包括智能问答、文档搜索、产品搜... 随着互联网技术的不断革新,一些移动通信设备公司的产品线越加丰富,版本更多,信息量更大,为了解决运维人员在众多产品文档中查找文档效率低的问题,设计与实现了基于聊天机器人的知识库管理系统,关键模块包括智能问答、文档搜索、产品搜索、知识推荐和知识图谱等以辅助运维人员方便地查找文档和产品,能够在与运维人员对话过程中理解其意图、精确提取查询条件以及实现在知识图谱优化下的文档推荐。 展开更多
关键词 文档 产品 推荐 搜索 聊天机器人
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Comprehensive 3D-QSAR and Binding Mode of DAPY Inhibitors Using R-group Search and Molecular Docking 预览
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作者 仝建波 王洋 +1 位作者 雷珊 秦尚尚 《结构化学》 SCIE CAS CSCD 2019年第1期25-36,1共13页
The diarylpyrimidine(DAPY) compounds are important in the nonnucleoside reverse enzyme inhibitors. The present study is aimed at studying the three-dimensional quantitative structure-activity relationship(3D-QSAR) of ... The diarylpyrimidine(DAPY) compounds are important in the nonnucleoside reverse enzyme inhibitors. The present study is aimed at studying the three-dimensional quantitative structure-activity relationship(3D-QSAR) of DAPY inhibitors and their binding mode. We build a 3D-QSAR model involving 24 training DAPY inhibitors based on Topomer CoMFA, and 8 molecules are employed to validate the external predictive power of the model obtained. The multiple correlation coefficients of fitting, cross-validation and external validation were 0.979, 0.597 and 0.756, respectively. Topomer Search was employed as a tool for virtual screening in drug-like compounds of ZINC database(2012). Finally, we successfully design 30 new molecules with higher activity than that of all training and test inhibitors. The results indicated that Topomer CoMFA model had both favorable estimation stability and good predictive capability. Topomer Search technology could be effectively used to screen and design new compound, and had good predictive capability to guide the design of new Anti-HIV drugs. The molecular docking method was also used to study the interactions of these drugs by docking the ligands into HIV-1 reverse transcriptase active site, which revealed the likely bioactive conformations. This study showed extensive interactions between the DAPY derivatives and MET230, TRP229, PHE227, TYR318, TYR183, PRO95, GLY99, ILE100,TYR188, VAL106, TYR181, GLY190, GLU138, VAL179, THR139, ASN103 and LYS101 residues in the active site of HIV-1 reverse transcriptase. These results provide useful insights for the design of potent new inhibitors of HIV-1 reverse transcriptase. 展开更多
关键词 3D-QSAR DAPY INHIBITORS Topomer COMFA Topomer SEARCH molecular DOCKING
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Synchronization between frontal eye field and area V4 during free-gaze visual search
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作者 Ting Yan Hui-Hui Zhou 《动物学研究》 CAS CSCD 2019年第5期394-403,共10页
Information flow between the prefrontal and visual cortices is critical for visual behaviors such as visual search. To investigate its mechanisms, we simultaneously recorded spike and local field potential (LFP) signa... Information flow between the prefrontal and visual cortices is critical for visual behaviors such as visual search. To investigate its mechanisms, we simultaneously recorded spike and local field potential (LFP) signals in the frontal eye field (FEF) and area V4 while monkeys performed a free-gaze visual search task. During free-gaze search, spike-LFP coherence between FEF and V4 was enhanced in the theta rhythm (4–8 Hz) but suppressed in the alpha rhythm (8–13 Hz). Cross-frequency couplings during the Cue period before the search phase were related to monkey performance, with higher FEF theta-V4 gamma coupling and lower FEF alpha-V4 gamma coupling associated with faster search. Finally, feature-based attention during search enhanced spike-LFP coherence between FEF and V4 in the gamma and beta rhythms, whereas overt spatial attention reduced coherence at frequencies up to 30 Hz. These results suggest that oscillatory coupling may play an important role in mediating interactions between the prefrontal and visual cortices during visual search. 展开更多
关键词 SYNCHRONIZATION FRONTAL eye FIELD (FEF) V4 Visual SEARCH
Diversifying Top-κRoutes with Spatial Constraints
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作者 Hong-Fei Xu Yu Gu +2 位作者 Jian-Zhong Qi Jia-Yuan He Ge Yu 《计算机科学技术学报:英文版》 SCIE EI CSCD 2019年第4期818-838,共21页
Trip recommendation has become increasingly popular with the rapid growth of check-in data in location-based social networks.Most existing studies focused only on the popularity of trips.In this paper,we consider furt... Trip recommendation has become increasingly popular with the rapid growth of check-in data in location-based social networks.Most existing studies focused only on the popularity of trips.In this paper,we consider further the usability of trip recommendation results through spatial diversification.We thereby formulate a new type of queries named spatial diversified top-κroutes(SDκR)query.This type of queries finds k trip routes with the highest popularity,each of which starts at a given starting point,consumes travel time within a given time budget,and passes through points of interest(POIs)of given categories.Any two trip routes returned are diversified to a certain degree defined by the spatial distance between the two routes.We show that the SDkR problem is NP-hard.We propose two precise algorithms to solve the problem.The first algorithm starts with identifying all candidate routes that satisfy the query constraints,and then searches for theκ-route combination with the highest popularity.The second algorithm identifies the candidate routes and builds up the optimalκ-route combination progressively at the same time.Further,we propose an approximate algorithm to obtain even higher query efficiency with precision bounds.We demonstrate the effectiveness and efficiency of the proposed algorithms on real datasets.Our experimental results show that our algorithms find popular routes with diversified POI locations.Our approximate algorithm saves up to 90%of query time compared with the baseline algorithms. 展开更多
关键词 TRIP RECOMMENDATION spatial DIVERSITY ROUTE SEARCH CHECK-IN data
一起KBZ-400馈电开关故障分析及处理 预览
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作者 刘建平 《机电工程技术》 2019年第7期191-192,共2页
基于一起KBZ馈电开关无法正常吸合的故障,详细阐述了KBZ馈电开关的具体检修过程,包括其故障点的查找、分析以及具体处理方法,并总结了井下电气设备故障查找的一些简单方法,以期为同类KBZ馈电开关故障的解决提供参考。
关键词 馈电开关 故障 查找 处理
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