2021: Vol. 45, Núm. 1

Summary

  • The radiant diagrams of Florence Nightingale 

    Friendly, Michael; Andrews, Raymond (Institut d'Estadística de Catalunya, 2021-06-15)
    Article
    Open Access
    This article is a tribute to the contributions of Florence Nightingale to statistics and statistical graphics on her bicentennial. We start with her most famous “rose” diagram and describe how she came to this graphic, ...

  • Verifying compliance with ballast water standards: a decision-theoretic approach 

    Costa, Eliardo G.; Paulino, Carlos Daniel; Singer, Julio M (Institut d'Estadística de Catalunya, 2021-06-15)
    Article
    Open Access
    We construct credible intervals to estimate the mean organism (zooplankton and phytoplankton) concentration in ballast water via a decision-theoretic approach. To obtain the required optimal sample size, we use a total ...

  • Bayesian classification for dating archaeological sites via projectile points 

    Armero, Carmen; García-Donato, Gonzalo; Jimenez-Puerto, Joaquín; Pardo-Gordó, Salvador; Bernabeu, Joan (Institut d'Estadística de Catalunya, 2021-06-15)
    Article
    Open Access
    Dating is a key element for archaeologists. We propose a Bayesian approach to provide chronology to sites that have neither radiocarbon dating nor clear stratigraphy and whose only information comes from lithic arrowheads. ...

  • Joint outlier detection and variable selection using discrete optimization 

    Jammal, Mahdi; Canu, Stephane; Abdallah, Maher (Institut d'Estadística de Catalunya, 2021-06-15)
    Article
    Open Access
    In regression, the quality of estimators is known to be very sensitive to the presence of spurious variables and outliers. Unfortunately, this is a frequent situation when dealing with real data. To handle outlier proneness ...

  • The unilateral spatial autogressive process for the regular lattice two-dimensional spatial discrete data 

    Chutoo, Azmi; Karlis, Dimitris; Khan, Naushad Mamode; Jowaheer, Vandna (Institut d'Estadística de Catalunya, 2021-06-15)
    Article
    Open Access
    This paper proposes a generalized framework to analyze spatial count data under a unilateral regular lattice structure based on thinning type models. We start from the simple spatial integer-valued auto-regressive model ...