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Instance selection in digital soil mapping: a study case in Rio Grande do Sul, Brazil Ciência Rural
Giasson,Elvio; ten Caten,Alexandre; Bagatini,Tatiane; Bonfatti,Benito.
A critical issue in digital soil mapping (DSM) is the selection of data sampling method for model training. One emerging approach applies instance selection to reduce the size of the dataset by drawing only relevant samples in order to obtain a representative subset that is still large enough to preserve relevant information, but small enough to be easily handled by learning algorithms. Although there are suggestions to distribute data sampling as a function of the soil map unit (MU) boundaries location, there are still contradictions among research recommendations for locating samples either closer or more distant from soil MU boundaries. A study was conducted to evaluate instance selection methods based on spatially-explicit data collection using...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil survey; Data sampling; Model training.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000901592
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