Online Monitoring of Water-Quality Anomaly in Water Distribution Systems Based on Probabilistic Principal Component Analysis by UV-Vis Absorption Spectroscopy

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td align="left"> </td><td align="center">Actual water-quality normal</td><td align="center">Actual water-quality abnormal</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td align="left">Evaluated water-quality normal</td><td align="center">True negative (TN)</td><td align="center">False negative (FN)</td></tr><tr><td align="left">Evaluated water-quality abnormal</td><td align="center">False positive (FP)</td><td align="center">True positive (TP)</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Signs for four actual circumstances of water-quality.

Journal of Spectroscopy

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Table 2: Online Monitoring of Water-Quality Anomaly in Water Distribution Systems Based on Probabilistic Principal Component Analysis by UV-Vis Absorption Spectroscopy 

Table 2 | Online Monitoring of Water-Quality Anomaly in Water Distribution Systems Based on Probabilistic Principal Component Analysis by UV-Vis Absorption Spectroscopy 