نتایج جستجو برای: data clustering

تعداد نتایج: 2468872  

Journal: :International Journal on Artificial Intelligence Tools 2004

Journal: :Journal of Econometrics 2022

We propose a dynamic clustering model for uncovering latent time-varying group structures in multivariate panel data. The is three ways. First, the cluster location and scale matrices are to track gradual changes characteristics over time. Second, all units can transition between clusters based on Hidden Markov (HMM). Finally, HMM’s matrix depend lagged distances as well economic covariates. Mo...

In data mining, clustering is one of the important issues for separation and classification with groups like unsupervised data. In this paper, an attempt has been made to improve and optimize the application of clustering heuristic methods such as Genetic, PSO algorithm, Artificial bee colony algorithm, Harmony Search algorithm and Differential Evolution on the unlabeled data of an Iranian bank...

Journal: :journal of advances in computer research 0

clustering is the process of dividing a set of input data into a number of subgroups. the members of each subgroup are similar to each other but different from members of other subgroups. the genetic algorithm has enjoyed many applications in clustering data. one of these applications is the clustering of images. the problem with the earlier methods used in clustering images was in selecting in...

Journal: :iranian journal of pharmaceutical sciences 0
farzaneh boroumand department of biostatistics, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran, iran alireza akbarzade baghban department of biostatistics, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran, iran farid zayeri department of biostatistics, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran, iran hediye faghir ghanesefat department of pharmacology, faculty of medicine, tehran university of medical sciences, tehran, iran

ignoring two main characteristics of the concentration-response data, correlation between observations and presence of outliers, may lead to misleading results. therefore the special method should be considered. in this paper in to examine the effect of phenylephrine in rat corpus cavernosum, outlier robust nonlinear mixed estimation is used. in this study, eight different doses of phenylephrin...

Journal: :Jurnal CoreIT: Jurnal Hasil Penelitian Ilmu Komputer dan Teknologi Informasi 2018

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