نتایج جستجو برای: missing data

تعداد نتایج: 2444874  

Journal: :Sociological Methods & Research 2000

Journal: :Behavior Research Methods & Instrumentation 1982

Journal: :American Journal of Public Health 2017

Journal: :International Journal of Radiation Oncology*Biology*Physics 2021

Journal: :IEEE Transactions on Knowledge and Data Engineering 2018

Journal: :Circulation: Cardiovascular Quality and Outcomes 2010

Journal: :Journal of Statistical Software 2018

Journal: :Statistical Analysis and Data Mining: The ASA Data Science Journal 2017

2002
Cheti Nicoletti Pierre Hoonhout

This paper stresses the links that exist between concepts that are used in the theory of model reduction and concepts that arise in the missing data literature. This connection motivates the extension of the missing at random (MAR) and the missing completely at random (MCAR) concepts from a static setting, as introduced by Rubin (1976), to the case of dynamic panel data models. Using this exten...

ابدی, علیرضا, امین پورحسینقلی, محمد, علوی مجد, حمید, پروانه وار, سیمین,

Background and Objectives: Missing data exist in many studies, e.g. in regression models, and they decrease the model's efficacy. Many methods have been suggested for handling incomplete data: they have generally focused on missing outcome values. But covariate values can also be missing.Materials and Methods: In this paper we study the missing imputation by the EM algorithm and auxiliary varia...

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