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Systems Thinking(I) 系统思考(我)
Journal of Communication University of China Pub Date : 1900-01-01 DOI: 10.4337/9781781000861.00007
Zan Ting-qua
{"title":"Systems Thinking(I)","authors":"Zan Ting-qua","doi":"10.4337/9781781000861.00007","DOIUrl":"https://doi.org/10.4337/9781781000861.00007","url":null,"abstract":"The system science is one of the most important achievements of sciences in the 20 th century.Systems thinking is of the most fundamental among systems sciences. 60 topics are introduced in this article. Every topic encompasses three modules: related topic + related theories + the perspective of systems economics. It will be very helpful for the readers to understanding and grasping systems thinking that introducing systems thinking with concrete topics.","PeriodicalId":127233,"journal":{"name":"Journal of Communication University of China","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131922036","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: 500
An Improved Image Retrieval Algorithm 一种改进的图像检索算法
Journal of Communication University of China Pub Date : 1900-01-01 DOI: 10.1115/1.859810.paper114
Guangwen Zhang, Lei Yang, Jun Zhai, Hui Li, Yueping Lian
{"title":"An Improved Image Retrieval Algorithm","authors":"Guangwen Zhang, Lei Yang, Jun Zhai, Hui Li, Yueping Lian","doi":"10.1115/1.859810.paper114","DOIUrl":"https://doi.org/10.1115/1.859810.paper114","url":null,"abstract":"This paper introduces the whole process of retrieval based on color characteristics.First of all,this article presents the HSV color model in brief,then HSV color model is selected to verify other links to the choice of methods.Next,the color space is quantized and the quantization standard can be divided into two kinds:equidistant quantification and non-equidistant quantification.Then it is choosing proper feature extraction method.General color histogram can only express the global statistical information of the image without the color space,so this article adopts the method of local cumulative histogram,and in the choice of similarity measure,this paper compares Euclidean distance and the weighted distance,and then concludes the more effective retrieval results.Finally,through the contrast,this paper chooses the optimal image retrieval algorithm:HSV color model-Local accumulate histogram-Euclidean distance-Equidistant quantification.","PeriodicalId":127233,"journal":{"name":"Journal of Communication University of China","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130383798","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
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