Browsing by Subject "Mathematical statistics"
Now showing items 1-20 of 310
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A comparison of some confidence intervals for estimating the population coefficient of variation: a simulation study
(Institut d'Estadística de Catalunya, 2012)
Article
Open AccessThis paper considers several confidence intervals for estim ating the population coefficient of variation based on parametric, nonparametric and modified m ethods. A simulation study has been conducted to compare the ... -
A Compositional Approach to Allele Sharing Analysis
(Springer, 2016)
Part of book or chapter of book
Restricted access - publisher's policyRelatedness is of great interest in population-based genetic association studies. These studies search for genetic factors related to disease. Many statistical methods used in population-based genetic association studies ... -
A Decomposition-Ensemble framework for oil price forecasting during Covid19 outbreak: enabling rapid response in IOCs and NOCs
(Universitat Politècnica de Catalunya / Universitat de Barcelona, 2021-10)
Master thesis
Open AccessOne of main economic impacts of Covid19 was the unprecedented drop in crude futures prices. After the crash, a high-volatility period followed, adding more uncertainty to the markets and financial institutions worldwide. ... -
A genome-wide study of Hardy–Weinberg equilibrium with next generation sequence data
(2017-04-03)
Article
Open AccessStatistical tests for Hardy–Weinberg equilibrium have been an important tool for detecting genotyping errors in the past, and remain important in the quality control of next generation sequence data. In this paper, we ... -
A log-ratio biplot approach for exploring genetic relatedness based on identity by state
(2019-04-24)
Article
Open AccessThe detection of cryptic relatedness in large population-based cohorts is of great importance in genome research. The usual approach for detecting closely related individuals is to plot allele sharing statistics, based on ... -
A methodology for maintaining consistency between conceptual interpretations of nested partitions
(2016)
Conference report
Restricted access - publisher's policyThe relationship between interpretations of nested partitions is analyzed in this work, since there are multiple situations where a refinement of the original partition arises. As a result, a new methodology NCI-IMS is ... -
A microbiology application of the skew-Laplace distribution
(Institut d'Estadística de Catalunya, 2008)
Article
Open AccessFlow cytometry scatter are ofen used in microbiology, and their measures are related to bacteria size and granularity. We present an application of the skew-Laplace distribution to flow cytometry data. The goodness of fit ... -
A new spectral method for latent variable models
(2018-05-22)
Article
Open AccessWe present an algorithm for the unsupervised learning of latent variable models based on the method of moments. We give efficient estimates of the moments for two models that are well known, e.g., in text mining, the ... -
A note on interval estimation for the mean of inverse Gaussian distribution
(Institut d'Estadística de Catalunya, 2008)
Article
Open AccessIn this paper, we study the interval Estimation for the mean from inverse Gaussian distribution. This distribution is a member of the natural exponential families with cubic variance function. Also, we simulate the coverage ... -
A note on the likelihood and moments of the skew-normal distribution
(Institut d'Estadística de Catalunya, 2008)
Article
Open AccessIn this paper an alternative approach to the one in Henze (1986) is proposed for deriving the odd moments of the skew-normal distribution considered in Azzalini (1985). The approach is based on a Pascal type triangle, which ... -
A simulation study on some confidence intervals for the population standard deviation
(Institut d'Estadística de Catalunya, 2011)
Article
Open AccessIn this paper a robust estimator against outliers along with some other existing interval estimators are considered for estimating the population standard devi ation. An extensive simulation study has been conducted ... -
A statistical learning based approach for parameter fine-tuning of metaheuristics
(2016-06)
Article
Open AccessMetaheuristics are approximation methods used to solve combinatorial optimization problems. Their performance usually depends on a set of parameters that need to be adjusted. The selection of appropriate parameter values ... -
A survey exploring biomedical editors’ perceptions of editorial interventions to improve adherence to reporting guidelines
(2019-09-24)
Article
Open AccessBackground: Improving the completeness of reporting of biomedical research is essential for improving its usability. For this reason, hundreds of reporting guidelines have been created in the last few decades but adherence ... -
Algunes reflexions al voltat de l'estadística
(2014-01-10)
Other
Open Access -
Allele-Sharing analysis and relationship inference
(Universitat Politècnica de Catalunya / Universitat de Barcelona / Universitat de Girona, 2014-06)
Master thesis
Restricted access - author's decisionThis master's thesis presents some techniques in statistical genetics to study family relationships. Two individuals can share 0, 1 or 2 alleles for any genetic marker. The larger the number of shared alleles between a ... -
Amplitude equation approach to spatiotemporal dynamics of cardiac alternans
(American Physical Society, 2007-11-30)
Article
Open AccessAmplitude equations are derived that describe the spatiotemporal dynamics of cardiac alternans during periodic pacing of one- B. Echebarria and A. Karma, Phys. Rev. Lett. 88, 208101 2002 and twodimensional homogeneous ... -
An agile simheuristic for the stochastic team task assignment and orienteering problem: applications to unmanned aerial vehicles
(2020)
Conference report
Open AccessEfficient coordination of unmanned aerial vehicles (UAVs) requires the solving of challenging operational problems. One of them is the integrated team task assignment and orienteering problem (TAOP). The TAOP can be seen ... -
An application of the isometric log-ratio transformation in relatedness research
(Springer, 2016)
Part of book or chapter of book
Restricted access - publisher's policyAbstract Genetic marker data contains information on the degree of relatedness of a pair of individuals. Relatedness investigations are usually based on the extent to which alleles of a pair of individuals match over a set ... -
An energy model for the acoustic insulation of absorbing materials
(Sociedad Española de Métodos Numéricos en Ingeniería (SEMNI), 2013)
Conference report
Open AccessIn this work an energy model for the acoustic insulation of absorbing ma- terials is shown. This model is an extension of Statistical Energy Analysis (SEA) [1] in order to account for the effect of non-conservative ... -
An invitation to singular symplectic geometry
(2017)
External research report
Open AccessIn this paper we analyze in detail a collection of motivating examples to consider bm- symplectic forms and folded-type symplectic structures. In particular, we provide models in Celestial Mechanics for every bm-symplectic ...
