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Collaborative Filtering Algorithm Based on the Similarity of User Ratings and Item Attributes 基于用户评分和项目属性相似度的协同过滤算法
International Congress of Mathematicans Pub Date : 2015-10-30 DOI: 10.2991/ICMII-15.2015.78
Aili Liu, Baoan Li
{"title":"Collaborative Filtering Algorithm Based on the Similarity of User Ratings and Item Attributes","authors":"Aili Liu, Baoan Li","doi":"10.2991/ICMII-15.2015.78","DOIUrl":"https://doi.org/10.2991/ICMII-15.2015.78","url":null,"abstract":"Collaborative filtering recommendation algorithm is key technologies of personalized re commendation system, as the serious data sparsity of rated items, the traditional collaborative filtering algorithms only depending on users data cannot achieve satisfactory recommended quality, an improved collaborative filtering recommendation algorithm based on the similarity of user ratings and item attributes is proposed. The experimental results based on Movie Lens dataset show that the improved hybrid collaborative filtering recommendation algorithm obtains the better recommendation accuracy than traditional similarity calculation method.","PeriodicalId":270248,"journal":{"name":"International Congress of Mathematicans","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132377573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Reliability evaluation of distribution network based on improved non sequential Monte Carlo method 基于改进非顺序蒙特卡罗方法的配电网可靠性评估
International Congress of Mathematicans Pub Date : 2015-04-20 DOI: 10.2991/ICMRA-15.2015.105
Jie Zhu, C. Li, A. Tang
{"title":"Reliability evaluation of distribution network based on improved non sequential Monte Carlo method","authors":"Jie Zhu, C. Li, A. Tang","doi":"10.2991/ICMRA-15.2015.105","DOIUrl":"https://doi.org/10.2991/ICMRA-15.2015.105","url":null,"abstract":"system; Distribution network. Abstract. In this paper the idea of stratificatio n is utilized to form a homogeneous-st ratified sampling method, which can increase the efficient of power system random fault state evaluation. Applying this method for reliability evaluation only generates a small number of independent random numbers, it decrease the amount of calculation and increase the efficient. The improved non sequential Monte Carlo method is then demonstrated and implemented in the reliability evaluation of RBTS-BUS5 system case, illustrating this algorithm can be used in reliability evaluation of distribution network.","PeriodicalId":270248,"journal":{"name":"International Congress of Mathematicans","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132768943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Constrain Component Extraction Techniques 约束成分提取技术
International Congress of Mathematicans Pub Date : 2015-04-20 DOI: 10.2991/ICMRA-15.2015.154
Yongjian Zhao
{"title":"Constrain Component Extraction Techniques","authors":"Yongjian Zhao","doi":"10.2991/ICMRA-15.2015.154","DOIUrl":"https://doi.org/10.2991/ICMRA-15.2015.154","url":null,"abstract":"","PeriodicalId":270248,"journal":{"name":"International Congress of Mathematicans","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131738359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
An Operating Equipment Scheduling System Based on Multi-Rule Constraints 基于多规则约束的作业设备调度系统
International Congress of Mathematicans Pub Date : 2015-04-20 DOI: 10.2991/ICMRA-15.2015.182
B. Duan
{"title":"An Operating Equipment Scheduling System Based on Multi-Rule Constraints","authors":"B. Duan","doi":"10.2991/ICMRA-15.2015.182","DOIUrl":"https://doi.org/10.2991/ICMRA-15.2015.182","url":null,"abstract":"","PeriodicalId":270248,"journal":{"name":"International Congress of Mathematicans","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132342382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Improved K-means Algorithm for Brain MRI Image Segmentation 脑MRI图像分割的改进k -均值算法
International Congress of Mathematicans Pub Date : 2015-04-20 DOI: 10.2991/ICMRA-15.2015.210
Jianwei Liu, Lei Guo
{"title":"An Improved K-means Algorithm for Brain MRI Image Segmentation","authors":"Jianwei Liu, Lei Guo","doi":"10.2991/ICMRA-15.2015.210","DOIUrl":"https://doi.org/10.2991/ICMRA-15.2015.210","url":null,"abstract":"For the problem of low accuracy by the traditional K-means clustering algorithm to segment noised brain magnetic resonance imaging (MRI) images. This paper proposed an improved K-means algorithm. The traditional K-means algorithm only considers the brain image gray value itself, ignoring the relationship between pixels. Due to the characteristics of brain MRI image adjacent pixels most likely belonging to the same class, this paper adopts average value of small neighborhood of each image pixel and image gray value to compose a new sample point, in order to reduce the impact of noise on the clustering accuracy. Experimental results show that the improved K-means algorithm can effectively improve the segmentation accuracy of the noised brain MRI image.","PeriodicalId":270248,"journal":{"name":"International Congress of Mathematicans","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132377568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Graphene Field-effect Transistor Modeling Based on Artificial Neural Network 基于人工神经网络的石墨烯场效应晶体管建模
International Congress of Mathematicans Pub Date : 2015-04-01 DOI: 10.2991/MEIC-15.2015.339
Guojian Cheng, Haiyan Wu, Xinjian Qiang, Qianyu Ji, Qi-Mei Zhao
{"title":"Graphene Field-effect Transistor Modeling Based on Artificial Neural Network","authors":"Guojian Cheng, Haiyan Wu, Xinjian Qiang, Qianyu Ji, Qi-Mei Zhao","doi":"10.2991/MEIC-15.2015.339","DOIUrl":"https://doi.org/10.2991/MEIC-15.2015.339","url":null,"abstract":"Simulations and verifications on graphene electronic devices are foundations for application of graphene in integrated circuits. Modeling on graphene metal-oxide-semiconductor field-effect transistor is implemented with artificial neural network. The proposed model has high accuracy and high efficiency. The computational time for the MOSFET model is decreased significantly. More importantly, the novel model for graphene MOSFET is realized in HSPICE software as a subcircuit, which may obviously increase the efficiency of simulations on graphene large scale integrated circuits. Keywords-graphene; field-effect transistors; modeling; artificial neural network; HSPICE","PeriodicalId":270248,"journal":{"name":"International Congress of Mathematicans","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132803502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Development and Application of Software for Water Ecological Index Screening 水生态指数筛选软件的开发与应用
International Congress of Mathematicans Pub Date : 2015-04-01 DOI: 10.2991/MEIC-15.2015.154
H. Yonggang, Hu Xiaomin, Jiang Binhui, Wang Yidi
{"title":"Development and Application of Software for Water Ecological Index Screening","authors":"H. Yonggang, Hu Xiaomin, Jiang Binhui, Wang Yidi","doi":"10.2991/MEIC-15.2015.154","DOIUrl":"https://doi.org/10.2991/MEIC-15.2015.154","url":null,"abstract":"The objective of this article is to apply a program for ecological indicator screening base on a new method, which is the Comprehensive Method for Water Ecological Index Screening (CMWEIS). CMWEIS is based on the Principal Component Analysis (PCA) and Delphi Method (DM, a kind of expert investigation method). Not only the objective factors but also the subjective factors are considered. Using CMWEIS, the ecological indicators were sorted in the range of Liao River basin. 25 ecological indexes, 2 years’ observed data of the main stream of Liao River were considered. Ten specialists were invited to answer the designed questionnaires. After 5 times of screening, the score of each ecological index was provided and 11 indexes were selected. CMWEIS considered both the objective characters of the indicators and the subjective adjustment of the specialists. So the indexes selected by WEIDSM could reflect the ecological status well and truly. The model was programmed by Visual Basic 6.0, so that all the statistical calculations were done by the computer. It could be expected that CMWEIS could give the sequence of ecological indicators quickly, so as to make ecological monitoring or evaluating more effectively. Keywordsecological index; index screening; principal component analysis; Delphi method","PeriodicalId":270248,"journal":{"name":"International Congress of Mathematicans","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132206361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on The Debris Flow Monitoring System Based on Infrasonic Wave 基于次声波的泥石流监测系统研究
International Congress of Mathematicans Pub Date : 2015-04-01 DOI: 10.2991/MEIC-15.2015.120
Hongyun Guan, Hui Zhang
{"title":"Research on The Debris Flow Monitoring System Based on Infrasonic Wave","authors":"Hongyun Guan, Hui Zhang","doi":"10.2991/MEIC-15.2015.120","DOIUrl":"https://doi.org/10.2991/MEIC-15.2015.120","url":null,"abstract":"Debris-prone areas are widely distributed worldwide, all continents except Antarctic have been harmed by debris flow. Debris flow normally outbreaks all of a sudden, sweeps along fast accompanying with other disasters like landslides, flood and collapse. It has huge destructive power, making severe threats to water conservancy and hydropower, mines, traffic in mountain areas and other engineering facilities as well as local people’s lives, property and safety.This task makes an in-depth research on theory of infrasonic wave produced when debris flow occurs. Infrasonic signal collected in the experiment has been transformed with Hilbert-Hang (HHT) which is good at analysis and processing of nonlinear and unstable signals. This system enables to transform debris flow’s infrasonic signal collected with infrasonic wave sensor to digital signals by data acquisition card and send it to computer, and then analyze and process such signal using digital signal processing methods in combination of characteristics of infrasonic signal. This research makes an efficient separation of infrasonic signals which are produced by debris flow and environment noises. So in this way, a debris flow monitoring system can be designed based on infrasonic wave. Keywords-debris flow; HHT; infrasonic wave sensor; data acquisition card; monitoring","PeriodicalId":270248,"journal":{"name":"International Congress of Mathematicans","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133541897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Anti-interference Study on D2D Communications D2D通信的抗干扰研究
International Congress of Mathematicans Pub Date : 2015-04-01 DOI: 10.2991/MEIC-15.2015.314
Xianjun Zhou, Ya Zhang, Qiulin Sheng, Danwen Wu
{"title":"The Anti-interference Study on D2D Communications","authors":"Xianjun Zhou, Ya Zhang, Qiulin Sheng, Danwen Wu","doi":"10.2991/MEIC-15.2015.314","DOIUrl":"https://doi.org/10.2991/MEIC-15.2015.314","url":null,"abstract":"D2D (Device-to-Device) communication is a new technology that allowing terminals communicate directly by reusing cell resources under the BS(base station) controlling.After bringing D2D communication mode into cellular network,and that will cause interference problems. This paper describes the generation of interference after D2D communication mode being brought into the cellular network and then summarize current interference studies of a single cell and multi-cellular communications networks.","PeriodicalId":270248,"journal":{"name":"International Congress of Mathematicans","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134636060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Carrier power dependence and avoidance methods of passive intermodulation product 无源互调产品的载波功率依赖及避免方法
International Congress of Mathematicans Pub Date : 2015-04-01 DOI: 10.2991/MEIC-15.2015.236
Pei Zhao, Tong Liang
{"title":"Carrier power dependence and avoidance methods of passive intermodulation product","authors":"Pei Zhao, Tong Liang","doi":"10.2991/MEIC-15.2015.236","DOIUrl":"https://doi.org/10.2991/MEIC-15.2015.236","url":null,"abstract":"With the widely development of high power and multi-channel system, passive intermodulaton (PIM) caused by passive components can not be neglected anymore. In this paper, an experimental investigation of the relationship between PIM levels and the carrier powers has been carried out and the results are reported and fitted. Then the performance requirement of passive component used in wireless system is introduced and frequency planning method to avoid effective hit of PGSM is provided.","PeriodicalId":270248,"journal":{"name":"International Congress of Mathematicans","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134547148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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