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Estimating Missing Values of Daily Rainfall Using Classification Techniques

Author(s): Tae-Woong Kim; Hosung Ahn; Jae-Hyun Ahn; Sung-Ho Byeon; Sung-Wook Wi; Moonil Kim

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Abstract: Missing data in daily rainfall records need to be filled in accurately beforehand. Presented herein is an effort to develop a new spatial daily rainfall model that is intended specifically to fill in gaps in the measured rainfalls. This study adopted a neural networkoriented pattern classifier that determines a daily rainfall occurrence. We herein tested four alternative classifiers. The testing results reveal that a probabilistic neural network approach was superior to the others. Also, a stepwise regression performed better for estimating rainfall amounts than other competing approaches. This study proved that the proposed model produced accurate and unbiased estimates for missing values of daily rainfall.

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Year: 2007

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