2009
DOI: 10.1016/j.watres.2009.07.023
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Treated water quality assurance and description of distribution networks by multivariate chemometrics

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Cited by 29 publications
(10 citation statements)
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“…The analyses prove that when the missing data do not exceed 5 % of the set, satisfactory results of CART classification can be expected (Yong 2006). Thanks to its transparence and high accuracy, the method is used in various branches of science, e.g., medicine (Ture et al 2009), photogrammetry (Yang et al 2003), economics (Chang 2011), environmental protection (Smeti et al 2009), food science (Hazir et al 2012) and chemistry (Chudzinska and Baralkiewicz 2011). The CART classification is made in a few stages.…”
Section: Cart Backgroundmentioning
confidence: 94%
“…The analyses prove that when the missing data do not exceed 5 % of the set, satisfactory results of CART classification can be expected (Yong 2006). Thanks to its transparence and high accuracy, the method is used in various branches of science, e.g., medicine (Ture et al 2009), photogrammetry (Yang et al 2003), economics (Chang 2011), environmental protection (Smeti et al 2009), food science (Hazir et al 2012) and chemistry (Chudzinska and Baralkiewicz 2011). The CART classification is made in a few stages.…”
Section: Cart Backgroundmentioning
confidence: 94%
“…Principal components analysis and/or factor analysis have been applied in a number of studies to identify groups of similar variables that characterize water contamination (Akbal et al 2010;Astel et al 2006;Chen et al 2007;Helena et al 2000;Facchinelli et al 2001;Juahir et al 2011;Pinto and Maheswari 2011;Reghunath et al 2002;Shrestha and Kazama 2007;Singh et al 2004;Soares et al 1999;Fig. 3 Dendrogram of the observed variables obtained by hierarchical clustering using Ward's method as a linkage method and Pearson correlation coefficient as a similarity measure Smeti et al 2009;Viera et al 2012). For the purpose of principal and factor analysis in our research, the original data were transformed by log(x+1) transformation.…”
Section: Principal Component and Factor Analysismentioning
confidence: 99%
“…Transformation by a previously used logarithmic function would result in exactly the same classification trees. In this study, we use the algorithm of classification and regression trees (CART), which was also applied in (Smeti et al 2009) for classification of samples of treated water according to its source. One of the first studies in which classification methods of artificial intelligence were applied for classification of water samples was conducted by Dzeroski and co-workers (1997), who used the CN2 algorithm for induction of decision trees in a biological classification of river water quality.…”
Section: Classification By Decision Treementioning
confidence: 99%
“…Operations data management systems are already used by operations personnel to track operational data that could be used to establish the baseline operating conditions necessary for detection of contamination and calibration of hydraulics models of distribution and treatment systems (Serjeantson et al, 2011). Smeti et al (2009) used a statistical approach to predict water origin in a water system, suggesting that water quality data can be used to predict origin as it refers to a contamination location.…”
Section: Water Quality Parameters For Detection Of Contaminantsmentioning
confidence: 99%