{"title":"Construction of trend-free optimal block designs under some correlation structures","authors":"Akram Fakhari-Esferizi, Razieh Khodsiani","doi":"10.1007/s42952-024-00264-5","DOIUrl":null,"url":null,"abstract":"<p>In many block experiments where the treatments are applied to the experimental units sequentially over time or space, there may be a systematic trend effect that influences the observations in addition to the block and the treatment effects. In some previous literature, optimality of block designs under trend effects has been studied in the case of uncorrelated observations when the number of treatments is greater than the size of blocks. This article deals with the block model incorporating trend components when the observations are correlated under some correlation structures. We introduce methods for constructing trend-free optimal designs with every treatment number and block size.</p>","PeriodicalId":49992,"journal":{"name":"Journal of the Korean Statistical Society","volume":"56 1","pages":""},"PeriodicalIF":0.6000,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Korean Statistical Society","FirstCategoryId":"100","ListUrlMain":"https://doi.org/10.1007/s42952-024-00264-5","RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"STATISTICS & PROBABILITY","Score":null,"Total":0}
引用次数: 0
Abstract
In many block experiments where the treatments are applied to the experimental units sequentially over time or space, there may be a systematic trend effect that influences the observations in addition to the block and the treatment effects. In some previous literature, optimality of block designs under trend effects has been studied in the case of uncorrelated observations when the number of treatments is greater than the size of blocks. This article deals with the block model incorporating trend components when the observations are correlated under some correlation structures. We introduce methods for constructing trend-free optimal designs with every treatment number and block size.
期刊介绍:
The Journal of the Korean Statistical Society publishes research articles that make original contributions to the theory and methodology of statistics and probability. It also welcomes papers on innovative applications of statistical methodology, as well as papers that give an overview of current topic of statistical research with judgements about promising directions for future work. The journal welcomes contributions from all countries.