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Chesneau C, Tomy L, Jose M. Wrapped modified Lindley distribution. JOURNAL OF STATISTICS & MANAGEMENT SYSTEMS 2021. [DOI: 10.1080/09720510.2020.1796313] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Christophe Chesneau
- Department of Mathematics, Université de Caen, LMNO, Campus II, Science 3, Caen 14032, France
| | - Lishamol Tomy
- Department of Statistics, Deva Matha College, Kuravilangad, 686633 Kerala, India
| | - Meenu Jose
- Department of Statistics, Carmel College, Mala, Thrissur 680732, Kerala, India
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Bee M. Estimating the wrapped stable distribution via indirect inference. COMMUN STAT-SIMUL C 2020. [DOI: 10.1080/03610918.2020.1801732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Marco Bee
- Department of Economics and Management, University of Trento, Trento, Italy
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Ölander K, Muukkonen I, Saarela TP, Salmela VR. Integration of facial features under memory load. Sci Rep 2019; 9:892. [PMID: 30696943 PMCID: PMC6351552 DOI: 10.1038/s41598-018-37596-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 12/11/2018] [Indexed: 11/17/2022] Open
Abstract
Simple visual items and complex real-world objects are stored into visual working memory as a collection of independent features, not as whole or integrated objects. Storing faces into memory might differ, however, since previous studies have reported perceptual and memory advantage for whole faces compared to other objects. We investigated whether facial features can be integrated in a statistically optimal fashion and whether memory maintenance disrupts this integration. The observers adjusted a probe – either a whole face or isolated features (eyes or mouth region) – to match the identity of a target while viewing both stimuli simultaneously or after a 1.5 second retention period. Precision was better for the whole face compared to the isolated features. Perceptual precision was higher than memory precision, as expected, and memory precision further declined as the number of memorized items was increased from one to four. Interestingly, the whole-face precision was better predicted by models assuming injection of memory noise followed by integration of features than by models assuming integration of features followed by the memory noise. The results suggest equally weighted or optimal integration of facial features and indicate that feature information is preserved in visual working memory while remembering faces.
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Affiliation(s)
- K Ölander
- Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - I Muukkonen
- Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - T P Saarela
- Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - V R Salmela
- Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
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Abstract
The Wrapped package computes the probability density function, cumulative distribution function, quantile function and also generates random samples for many univariate wrapped distributions. It also computes maximum likelihood estimates, standard errors, confidence intervals and measures of goodness of fit for nearly fifty univariate wrapped distributions. Numerical illustrations of the package are given.
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Adnan MAS, Roy S. A sequential discrimination procedure for two almost identically shaped wrapped distributions. J Appl Stat 2017. [DOI: 10.1080/02664763.2016.1189516] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kato S, Jones MC. A tractable and interpretable four-parameter family of unimodal distributions on the circle. Biometrika 2014. [DOI: 10.1093/biomet/asu059] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Affiliation(s)
- Arthur Pewsey
- Mathematics Department, Escuela Politécnica; University of Extremadura; 10003 Cáceres Spain
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Nuñez-Antonio G, Gutiérrez-Peña E. A Bayesian model for longitudinal circular data based on the projected normal distribution. Comput Stat Data Anal 2014. [DOI: 10.1016/j.csda.2012.07.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Laha AK, Mahesh KC, Ghosh DK. SB-Robust Estimators of the Parameters of the Wrapped Normal Distribution. COMMUN STAT-THEOR M 2013. [DOI: 10.1080/03610926.2012.721911] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kato S, Jones M. An extended family of circular distributions related to wrapped Cauchy distributions via Brownian motion. BERNOULLI 2013. [DOI: 10.3150/11-bej397] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Abstract
We provide four-parameter families of distributions on the circle which are unimodal and display the widest ranges of both skewness and peakedness yet available. Our approach is to transform the scale of a generating distribution, such as the von Mises, using various nontrivial extensions of an approach first used in Batschelet's (1981, Circular Statistics in Biology) book. The key is to employ inverses of Batschelet-type transformations in certain ways; these exhibit considerable advantages over direct Batschelet transformations. The skewness transformation is especially appealing as it has no effect on the normalizing constant. As well as a variety of interesting theoretical properties, when likelihood inference is explored these distributions display orthogonality between elements of a pairing of parameters into (location, skewness) and (concentration, peakedness). Further, the location parameter can sometimes be made approximately orthogonal to all the other parameters. Profile likelihoods come to the fore in practice. Two illustrative applications, one concerning the locomotion of a Drosophila fly larva, the other analyzing a large set of sudden infant death syndrome data, are investigated.
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Affiliation(s)
- M C Jones
- Department of Mathematics & Statistics, The Open University, Walton Hall, Milton Keynes, UK.
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Kato S, Jones MC. A Family of Distributions on the Circle With Links to, and Applications Arising From, Möbius Transformation. J Am Stat Assoc 2012. [DOI: 10.1198/jasa.2009.tm08313] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Shogo Kato
- Shogo Kato is Assistant Professor, Institute of Statistical Mathematics, Tachikawa, Tokyo 190-8562, Japan . M. C. Jones is Professor of Statistical Science, Department of Mathematics & Statistics, The Open University, Milton Keynes, MK7 6AA, U.K. . Kato is grateful to the Department of Mathematics & Statistics at the Open University for its hospitality during the research visit that led to this article. Financial support for the visit was provided by the Ministry of Education, Culture, Sports, Science
| | - M. C. Jones
- Shogo Kato is Assistant Professor, Institute of Statistical Mathematics, Tachikawa, Tokyo 190-8562, Japan . M. C. Jones is Professor of Statistical Science, Department of Mathematics & Statistics, The Open University, Milton Keynes, MK7 6AA, U.K. . Kato is grateful to the Department of Mathematics & Statistics at the Open University for its hospitality during the research visit that led to this article. Financial support for the visit was provided by the Ministry of Education, Culture, Sports, Science
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Pewsey A, Shimizu K, de la Cruz R. On an extension of the von Mises distribution due to Batschelet. J Appl Stat 2011. [DOI: 10.1080/02664761003759024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kim HM. A Projected Exponential Family for Modeling Semicircular Data. KOREAN JOURNAL OF APPLIED STATISTICS 2010. [DOI: 10.5351/kjas.2010.23.6.1125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Seo HS, Shin JK, Kim HM. Projected Circular and l-Axial Skew-Normal Distributions. KOREAN JOURNAL OF APPLIED STATISTICS 2009. [DOI: 10.5351/kjas.2009.22.4.879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kim HM. New Family of the Exponential Distributions for Modeling Skewed Semicircular Data. KOREAN JOURNAL OF APPLIED STATISTICS 2009. [DOI: 10.5351/kjas.2009.22.1.205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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