Imputation of rainfall data using the sine cosine function fitting neural network

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18450%2F21%3A50018348" target="_blank" >RIV/62690094:18450/21:50018348 - isvavai.cz</a>

Result on the web

<a href="https://www.ijimai.org/journal/sites/default/files/2021-08/ijimai6_7_4.pdf" target="_blank" >https://www.ijimai.org/journal/sites/default/files/2021-08/ijimai6_7_4.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.9781/ijimai.2021.08.013" target="_blank" >10.9781/ijimai.2021.08.013</a>

Result language

angličtina

Original language name

Imputation of rainfall data using the sine cosine function fitting neural network

Original language description

Missing rainfall data have reduced the quality of hydrological data analysis because they are the essential input for hydrological modeling. Much research has focused on rainfall data imputation. However, the compatibility of precipitation (rainfall) and non-precipitation (meteorology) as input data has received less attention. First, we propose a novel pre-processing mechanism for non-precipitation data by using principal component analysis (PCA). Before the imputation, PCA is used to extract the most relevant features from the meteorological data. The final output of the PCA is combined with the rainfall data from the nearest neighbor gauging stations and then used as the input to the neural network for missing data imputation. Second, a sine cosine algorithm is presented to optimize neural network for infilling the missing rainfall data. The proposed sine cosine function fitting neural network (SC-FITNET) was compared with the sine cosine feedforward neural network (SC-FFNN), feedforward neural network (FFNN) and long short-term memory (LSTM) approaches. The results showed that the proposed SC-FITNET outperformed LSTM, SC-FFNN and FFNN imputation in terms of mean absolute error (MAE), root mean square error (RMSE) and correlation coefficient (R), with an average accuracy of 90.9%. This study revealed that as the percentage of missingness increased, the precision of the four imputation methods reduced. In addition, this study also revealed that PCA has potential in pre-processing meteorological data into an understandable format for the missing data imputation. © 2021, Universidad Internacional de la Rioja. All rights reserved.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

International Journal of Interactive Multimedia and Artificial Intelligence

ISSN

1989-1660

e-ISSN

—

Volume of the periodical

6

Issue of the periodical within the volume

7

Country of publishing house

ES - SPAIN

Number of pages

10

Pages from-to

39-48

UT code for WoS article

000762258500005

EID of the result in the Scopus database

2-s2.0-85115289154