{"title":"mqr树:改进二维空间访问方法","authors":"Marc Moreau, W. Osborn, B. Anderson","doi":"10.1109/ICDIM.2009.5356774","DOIUrl":null,"url":null,"abstract":"We propose the mqr-tree, a two-dimensional spatial access method that improves upon the 2DR-tree. The 2DR-tree uses two-dimensional nodes so that the relationships between all objects are maintained. The existing structure of the 2DR-tree has many advantages. However, limitations include higher tree height, overcoverage and overlap than is necessary. The mqr-tree improves utilizes a different node organization, set of validity rules and insertion strategy. A comparison versus the R-tree shows significant improvements in overlap and overcoverage, with comparable height and space utilization. In addition, zero overlap is achieved when the mqr-tree is used to index point data.","PeriodicalId":300287,"journal":{"name":"2009 Fourth International Conference on Digital Information Management","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"The mqr-tree: Improving upon a 2-dimensional spatial access method\",\"authors\":\"Marc Moreau, W. Osborn, B. Anderson\",\"doi\":\"10.1109/ICDIM.2009.5356774\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We propose the mqr-tree, a two-dimensional spatial access method that improves upon the 2DR-tree. The 2DR-tree uses two-dimensional nodes so that the relationships between all objects are maintained. The existing structure of the 2DR-tree has many advantages. However, limitations include higher tree height, overcoverage and overlap than is necessary. The mqr-tree improves utilizes a different node organization, set of validity rules and insertion strategy. A comparison versus the R-tree shows significant improvements in overlap and overcoverage, with comparable height and space utilization. In addition, zero overlap is achieved when the mqr-tree is used to index point data.\",\"PeriodicalId\":300287,\"journal\":{\"name\":\"2009 Fourth International Conference on Digital Information Management\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2009-12-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2009 Fourth International Conference on Digital Information Management\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICDIM.2009.5356774\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2009 Fourth International Conference on Digital Information Management","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICDIM.2009.5356774","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The mqr-tree: Improving upon a 2-dimensional spatial access method
We propose the mqr-tree, a two-dimensional spatial access method that improves upon the 2DR-tree. The 2DR-tree uses two-dimensional nodes so that the relationships between all objects are maintained. The existing structure of the 2DR-tree has many advantages. However, limitations include higher tree height, overcoverage and overlap than is necessary. The mqr-tree improves utilizes a different node organization, set of validity rules and insertion strategy. A comparison versus the R-tree shows significant improvements in overlap and overcoverage, with comparable height and space utilization. In addition, zero overlap is achieved when the mqr-tree is used to index point data.
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