| 词条 | Fernando de Helguero |
| 释义 |
Fernando de Helguero was born near Florence. He studied mathematics at the University of Rome. After receiving his licentiate degree in 1903,[3] he taught mathematics while he studied natural sciences, biology, statistics, and biometry.[1] He was an Invited Speaker of the ICM in Rome in April 1908.[4] However, he died later the same year in the 1908 Messina earthquake.[1] His collected papers were published in 1972.[5] According to Azzalini and Capitanio:[6] {{blockquote|The tragic end of de Helguero's life prevented the development of his innovative ideas, and the whole formulation passed unnoticed for the rest of the 20th century. It appears that his contribution has re-emerged only in the discussion of Azzalini (2005), thanks to a personal communication of D. M. Cifarelli. ...The formulation is distinctly one step ahead of the mainstream approach of data fitting of those years: probability distributions must not simply be devised to provide a numerical fit to observed frequencies, but they must also help to understand how the non-normal distribution has been generalized. This goal can be achieved by a formulation which relates perturbation of normality to the effect of some external mechanism.}} Selected publications
References1. ^1 2 {{cite web|url=http://azzalini.stat.unipd.it/SN/talk-FdH2011.pdf|title=The work of Fernando de Helguero on non-normality arising from selection by Adelchi Azzalini and Giuliana Regoli, Presented at "A Celebration of N. Balakrishnan's 30 years of Contributions to Statistics", Hong Kong, 28–31 December 2011|website=azzalini.stat.unipd.it}} 2. ^{{cite journal|author=Azzalini, A.|year=2005|title=The skew‐normal distribution and related multivariate families|journal=Scandinavian Journal of Statistics|volume=32|issue=2|pages=159–188|doi=10.1111/j.1467-9469.2005.00426.x}} 3. ^1 {{cite journal|author=Azzalini, A.|author2=Regoli, G.|year=2012|title=The work of Fernando de Helguero on non-normality arising from selection|journal=Chilean Journal of Statistics (ChJS)|volume=3|issue=2|pages=113–129|url=http://chjs.mat.utfsm.cl/volumes/03/02/Azzalini_Regoli(2012).pdf}} 4. ^{{cite book|author=de Helguero, F.|chapter=Sulla rappresentazione analitica delle curve abnormali|editor=G. Castelnuovo (ed.)|title=Atti del IV Congresso Internazionale dei Matematici (Roma, 6–11 Aprile 1908)|year=1909|volume=vol. 3|pages=288–299|chapter-url=http://www.mathunion.org/ICM/ICM1908.3/Main/icm1908.3.0288.0299.ocr.pdf}} 5. ^{{cite book|author=de Helguero, F.|title=Scritti vari|year=1972|location=Padova|publisher=CEDAM|isbn=8813137982|postscript=; 228 pages}} 6. ^{{cite book|author=Azzalini, Adelchi|author2=Capitanio, Antonella|title=The Skew-Normal and Related Families|year=2014|publisher=Cambridge University Press|pages=44–45|isbn=978-1-107-02927-9|url=https://books.google.com/books?id=-tkaAgAAQBAJ&pg=PA44}} External links
5 : 1880 births|1908 deaths|Italian statisticians|20th-century Italian mathematicians|Italian mathematicians |
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