Browsing Journal of Engineering Research and Education (JERE) by Author "Ahmad Shukri, Yahaya"
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The Replacement of Missing Values of Continous Air Pollution Monitoring Data using Mean Top Bottom Imputation technique
Norazian, Mohamed Noor; Ahmad Shukri, Yahaya; Nor Azam, Ramli; Mohd Mustafa, Al Bakri Abdullah (Kolej Universiti Kejuruteraan Utara Malaysia, 2006)Air pollutants data such as PM10 carbon monoxide, sulphur dioxide and ozone concentration were obtained from automated monitoring stations. These data usually contain missing values that can cause bias due to systematic ...