Correction to: Spatio-temporal analysis of drought in Southern Italy: a combined clustering-forecasting approach based on SPEI index and artificial intelligence algorithms

Correction to: Stochastic Environmental Research and Risk Assessment https://doi.org/10.1007/s00477-023-02390-8

Unfortunately, the fifth and seventh pages of this article's original edition included data errors. With this correction, the incorrect texts have been fixed.

1. Page 5: “the number of drought months with SPEI between 0 and –1 (D0,–1), –1 and –2 (D–1,–2) and –2 and –3 (D–2,–3)” Please correct: D0,–1 as D_0,–1; D–1,–2 as D_–1,–2; D–2,–3 as D_–2,–3

2. Page 5: “The best silhouette score values, higher than 0.4 for all the three clustering algorithms, were obtained for a number of clusters equal to 5 and assuming seven of the eleven parameters initially considered as input variables: SPEI_6,Min, SPEI_6,Max, D0,–1, D– –1, –2, D– –2, –3, DE_Mean and DE_Max.” Also here please correct: D0,–1 as D_0,–1; D– –1,–2 as D_–1,–2; D– –2,–3 as D_–2,–3.

3. Page 7: “2.3.1 C5: SPEI-15, SPEI-14, …, SVPEI-1” This sentence is incorrect and also is not the title of a subsection. It is part of the text in the Sect. 2.3, following “C4: SPEI_–13, SPEI_-12, …, SPEI_-1”. Please correct as: C5: SPEI_–15, SPEI_-14, …, SPEI_-1.

4. As a consequence please correct the subsequent subsection number: from “2.3.2 Support Vector Regression (SVR)” to “2.3.1 Support Vector Regression (SVR)”; from “2.3.3 M5P” to “2.3.2 M5P”; from “2.3.4 Hybrid Model M5P-SVR based on the Stacking algorithm” to “2.3.2 Hybrid Model M5P-SVR based on the Stacking algorithm”.

The original article has been corrected.