منابع مشابه
Dealing with Big Data
A the United States grew rapidly in the late nineteenth century, its government sought to collect more information about the state of the country. The vast amount of data collected in the 1880 census was still being transcribed by clerical staff nine years later. A new method was required for the 1890 census and Herman Hollerith, a census employee, proposed that census returns should be analyse...
متن کاملDealing with Missing Data
Rough sets methodology is a useful tool for analysis of decision problems concerning a set of objects described in a data table by a set of condition attributes and by a set of decision attributes. In practical applications, however, the data table is often not complete because some data are missing. To deal with this case, we propose an extension of the rough set methodology to the analysis of...
متن کاملDealing with Duff Data
The classical problem of statistical outliers does not really exist in the Bayesian context because its detection is indicative of an inadequate analysis model. Nevertheless, we may sometimes want to deal with data where quirky things occasionally happen. We describe two elementary probability formulations for handling this case and show, with the aid of a simple example, how they lead to robus...
متن کاملDealing with missing outcome data in randomized trials and observational studies.
Although missing outcome data are an important problem in randomized trials and observational studies, methods to address this issue can be difficult to apply. Using simulated data, the authors compared 3 methods to handle missing outcome data: 1) complete case analysis; 2) single imputation; and 3) multiple imputation (all 3 with and without covariate adjustment). Simulated scenarios focused o...
متن کامل6 Dealing with Cloudy Data
Looking up, it’s easy to spot the clouds. The white fluff is strikingly contrasted by the blue sky. It’s not so easy from space, especially above the Earth’s poles. The clouds blend in against the vast expanses of snow and ice. This is a problem for scientists who use satellites to study clouds and climate. Recently though, UC Berkeley statistician Bin Yu, her graduate student Tao Shi, and thei...
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ژورنال
عنوان ژورنال: Annual Reviews in Control
سال: 2018
ISSN: 1367-5788
DOI: 10.1016/j.arcontrol.2018.05.001