The Effect of Gaussian Noise on Maximum Likelihood Fitting of Gompertz and Weibull Mortality Models with Yeast Lifespan Data
     
Yazarlar (3)
Emine Güven Düzce Üniversitesi, Türkiye
Dr. Öğr. Üyesi Sevinç AKÇAY Kırşehir Ahi Evran Üniversitesi, Türkiye
Hong Qin
University of Tennessee System, Amerika Birleşik Devletleri
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı EXPERIMENTAL AGING RESEARCH (Q4)
Dergi ISSN 0361-073X Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 03-2019
Cilt / Sayı / Sayfa 45 / 2 / 167–179 DOI 10.1080/0361073X.2019.1586105
Makale Linki http://dx.doi.org/10.1080/0361073x.2019.1586105
Özet
Background/study context: Empirical lifespan data sets are often studied with the best-fitted mathematical model for aging. Here, we studied how experimental noises can influence the determination of the best-fitted aging model. We investigated the influence of Gaussian white noise in lifespan data sets on the fitting outcomes of two-parameter Gompertz and Weibull mortality models, commonly adopted in aging research.Methods: To un-equivocally demonstrate the effect of Gaussian white noises, we simulated lifespans based on Gompertz and Weibull models with added white noises. To gauge the influence of white noise on model fitting, we defined a single index, , for the difference between the maximal log-likelihoods of the Weibull and Gompertz model fittings. We then applied the approach using experimental replicative lifespan data sets for the laboratory BY4741 and BY4742 wildtype reference …
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