scholarly journals A Study on the Regionalization of Point Rainfall by Multivariate Analysis Technique

2003 ◽  
Vol 36 (5) ◽  
pp. 879-892
Author(s):  
Jang Park ◽  
Byong-Ho Jun ◽  
Suk-Hwan Jang
Keyword(s):  
Multivariate Analysis ◽  
Analysis Technique

scholarly journals Sparse HJ Biplot: A New Methodology via Elastic Net

Mathematics ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 1298
Author(s):  
Mitzi Cubilla-Montilla ◽  
Ana Belén Nieto-Librero ◽  
M. Purificación Galindo-Villardón ◽  
Carlos A. Torres-Cubilla
Keyword(s):  
Multivariate Analysis ◽  
Elastic Net ◽  
Massive Datasets ◽  
New Techniques ◽  
Modern Approach ◽  
R Language ◽  
Reduced Dimensions ◽  
Analysis Technique ◽  
Practical Support ◽  
Novel Algorithm

The HJ biplot is a multivariate analysis technique that allows us to represent both individuals and variables in a space of reduced dimensions. To adapt this approach to massive datasets, it is necessary to implement new techniques that are capable of reducing the dimensionality of the data and improving interpretation. Because of this, we propose a modern approach to obtaining the HJ biplot called the elastic net HJ biplot, which applies the elastic net penalty to improve the interpretation of the results. It is a novel algorithm in the sense that it is the first attempt within the biplot family in which regularisation methods are used to obtain modified loadings to optimise the results. As a complement to the proposed method, and to give practical support to it, a package has been developed in the R language called SparseBiplots. This package fills a gap that exists in the context of the HJ biplot through penalized techniques since in addition to the elastic net, it also includes the ridge and lasso to obtain the HJ biplot. To complete the study, a practical comparison is made with the standard HJ biplot and the disjoint biplot, and some results common to these methods are analysed.

scholarly journals KARAKTERISASI AROMA DAN RASA BEBERAPA VARIETAS BERAS LOKAL MELALUI QUANTITATIVE DESCRIPTIVE ANALYSIS METHOD

2015 ◽  
Vol 22 (1) ◽  
pp. 37 ◽  
Author(s):  
Ami Teja Rakhmi
Keyword(s):  
Multivariate Analysis ◽  
Descriptive Analysis ◽  
Early Age ◽  
Analysis Method ◽  
Rice Varieties ◽  
Local Varieties ◽  
Quantitative Descriptive Analysis ◽  
High Productivity ◽  
Analysis Technique ◽  
Quantitative Descriptive

<div data-canvas-width="788.4949999999995">Improvement of the national rice production could be done by using superior variety (VUB), which has early age of</div><div data-canvas-width="802.7116666666665">maturity and high productivity. However, the farmers, until now, still fanatics to grow the local rice. The utilization of</div><div data-canvas-width="802.6783333333335">local varieties as genetic resources for producing new superior varieties is expected to be solution. The study used seven</div><div data-canvas-width="802.6816666666666">local rice varieties (Anak Daro, Si Buyung, Cicih Merah, Mentik Wangi, Bengawan Solo, Rojolele, and Mandoti), to test</div><div data-canvas-width="802.6816666666666">the aroma and taste. Quantitative Descriptive Analysis (QDA) using trained panelists was applied. Data obtained were</div><div data-canvas-width="802.6866666666664">analyzed by Multivariate Analysis of Principle Component Analysis technique. Results showed that Mandoti and Rojolele</div><div data-canvas-width="802.7249999999999">have similar aroma and characterized by pandan, cereals, buttery, and green aroma. Cicih Merah characterized by creamy</div><div data-canvas-width="802.6766666666666">and sweet aroma. Mentik Wangi, Bengawan solo, and Anak Daro have similar properties but are not characterized by a</div><div data-canvas-width="802.6850000000001">distinctive aroma. Flavors of Cicih Merah and Bengawan solo are in one group and characterized by a taste of sweet and</div><div data-canvas-width="802.6916666666665">umami. Mandoti are in different groups and characterized by a taste of salty and bitter. Mentik Wangi and Si Buyung,</div><div data-canvas-width="669.7833333333333">Anak Daro and Rojolele even be in one group but not characterized by a distinctive flavor attributes.</div>

scholarly journals Estadística multivariante para la caracterización sectorial según la infraestructura de las viviendas en San Carlos de Zulia

2021 ◽  
Vol 4 (2) ◽  
pp. 73
Author(s):  
Lelly María Useche Castro ◽  
Olga Lilian Mendoza Talledo ◽  
Rosalba Karen Bravo Saltos ◽  
Miguel Ángel Lapo Palacios
Keyword(s):  
Multivariate Analysis ◽  
Correspondence Analysis ◽  
Rural Population ◽  
Previous Investigation ◽  
Advantages And Disadvantages ◽  
Palabras Clave ◽  
Analysis Technique ◽  
Basic Services ◽  
San Carlos

Se determinó un perfil de la infraestructura de una población rural en Venezuela con respecto a la vivienda según el sector, realizando un análisis de correspondencias simple en donde se compararon las variables de infraestructura con respecto a la variable “sector”.  La base de datos se obtuvo de una investigación previa basada en un cuestionario del censo de población y vivienda del Instituto Nacional de Estadística (INE) de una muestra de 226 hogares. Los resultados obtenidos variaron según el tipo de infraestructura y servicios básicos del sector. La técnica de análisis de correspondencias simple mostró ventajas y desventajas como método para caracterizar poblaciones.   Palabras clave: Análisis de correspondencias simple, análisis multivariante, caracterización, infraestructura.   Abstract A profile of the infrastructure of a rural population in Venezuela was determined with respect to housing according to the sector, performing a simple correspondence analysis in which the infrastructure variables were compared with respect to the variable "sector". The database was obtained from a previous investigation based on a questionnaire of the population and housing census of the National Institute of Statistics (INE) of a sample of 226 households. The results obtained varied according to the type of infrastructure and basic services in the sector. The simple correspondence analysis technique showed advantages and disadvantages as a method to characterize populations.   Keywords: Simple Correspondence Analysis, Multivariate Analysis, Characterization, Infrastructure.

scholarly journals Principal Components & Classification Analysis – Tool for Festuca rupicola Biodynamic Estimation Depending on Grassland Fertilisation

2016 ◽  
Vol 73 (2) ◽  
pp. 224
Author(s):  
Monica Harmanescu ◽  
Veronica Sarateanu
Keyword(s):  
Multivariate Analysis ◽  
Principal Components ◽  
Analysis Tool ◽  
Grassland Ecosystem ◽  
Statistical Tool ◽  
Classification Analysis ◽  
Permanent Grassland ◽  
Analysis Technique ◽  
Sheep Manure ◽  
Festuca Rupicola

The grassland forage must be monitored related to the quantitative and qualitative parameters. Festuca rupicola is one of the grass desired in grassland forage. It is necessary to have accessible statistical tools to monitor the Festuca rupicola biodynamic. The objective of the present research was to study that multivariate analysis technique Principal Components & Classification Analysis (PC&CA) can be used as a statistical tool for the estimation of Festuca rupicola biodynamic dependent of the fertilisation. The experimental results for Festuca rupicola cutting were collected in June and August 2009 from a hill permanent grassland ecosystem, with a substances flow anthropic influenced by the application of mineral and organic (sheep manure) fertilisers. The hill permanent grassland was situated in Banat, Romania, on a Calcic Luvisol. It was selected eight trials as PC&CA cases, the Festuca rupicola biodynamic data as supplementary variables, and as active variables the fertilisation data and ecological soil parameters. The correlation coefficients of Festuca rupicola biodynamic parameters (Fr1 and Fr2) were positively in mineral fertilisation case and negatively for sheep manure application. The Festuca rupicola biodynamic in June 2009 was high positive correlated with the Festuca rupicola biodynamic in August 2009 (0.835). The statistical data performed in the present study have shown that the multivariate analysis technique PC&CA can be used as a statistical tool for the estimation of Festuca rupicola biodymamic dependent of the mineral and/or organic fertilisation of hill grassland ecosystem.

scholarly journals Determination and evaluation of the mineral composition of breadfruit (Artocarpus altilis) using multivariate analysis technique

2016 ◽  
Vol 128 ◽  
pp. 84-88 ◽  
Author(s):  
Cheilane T. de Souza ◽  
Sarah A.R. Soares ◽  
Antonio F.S. Queiroz ◽  
Ana M.P. dos Santos ◽  
Sergio L.C. Ferreira
Keyword(s):  
Multivariate Analysis ◽  
Mineral Composition ◽  
Artocarpus Altilis ◽  
Analysis Technique

scholarly journals Comparative Analysis of Machinability of Nitinol Alloy Using Weighted Radar Diagram

2017 ◽  
Vol 8 (4) ◽  
pp. 74-81 ◽  
Author(s):  
Małgorzata Kowalczyk ◽  
Czesław Niżankowski
Keyword(s):  
Multivariate Analysis ◽  
Comparative Analysis ◽  
Material Properties ◽  
Cutting Conditions ◽  
Independent Factor ◽  
Machining Conditions ◽  
Alloy Type ◽  
Analysis Technique ◽  
Nitinol Alloy ◽  
Experimental Trials

Abstract The paper presents an attempt to analyze comparative machinability of two different varieties of nitinol alloy type, or compare the susceptibility of these materials to change the volume, shape and dimension of adopted machining conditions. The machinability of the material can not be fully determined numerically by only one independent factor. Therefore multivariate analysis technique of weighted diagram radar was developed by authors. This technique allowed for the comprehensive identification machinability analyzed varieties of nitinol alloy exclusively on the basis of the specified in literature directional material properties and general recommendations tool manufacturers on the cutting conditions. In the paper the full usefulness of this technique to demonstrate the differences in machinability of different varieties of the same species alloy, without the need for lengthy and cost-intensive experimental trials was presented.

Life Stress and Symptoms at the Climacterium

1980 ◽  
Vol 136 (5) ◽  
pp. 486-491 ◽  
Author(s):  
J. G. Greene ◽  
D. J. Cooke
Keyword(s):  
Multivariate Analysis ◽  
Life Stress ◽  
Normal Population ◽  
Somatic Symptoms ◽  
Personality Factors ◽  
Considerable Time ◽  
Life Event ◽  
Analysis Technique ◽  
Event Model ◽  
Total Life

SummaryPsychological and somatic symptoms presented by women in middle life are frequently attributed to the menopause. Many writers have questioned this assumption and have placed more emphasis on environmental and personality factors. Using a life event model and a multivariate analysis technique, life stress was shown to have a significantly more powerful influence on the elevation of symptoms in a normal population of women at that age than did the menopause. Furthermore, the elevation in symptoms occurred some considerable time before that event. The finding that there was no significant increase in total life stress at that time of life suggests the presence of a vulnerability or moderating factor.

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