Results
We present the results of our experiments using the aforementioned
tuning parameters for each of the water quality
time series. Through Figures 1–6: (a) shows the raw data;
(b) presents the raw data and the incorporated contaminants;
(c) provides the residuals obtained from the
prediction results and in the presence of contaminations;
(d), (e), (f), (g) depict respectively the results obtained with
the SPRT, the CUSUM, the BED, and the OBCPD. The
y-axes, for (d), (e), (f), (g) show respectively the computed
sequential probability ratio, the computed CUSUM, the
computed probability with the binomial distribution, and
the computed run length.