Classifying Digital Mammogram Masses Using Univariate ANOVA Discriminant Analysis

2009 ◽  
Author(s):  
B. Surendiran ◽  
Y. Sundaraiah ◽  
A. Vadivel
Keyword(s):  
Discriminant Analysis ◽  
Digital Mammogram ◽  
Univariate Anova

scholarly journals Relationship between effectiveness and match outcome in the Spanish Water Polo League (Relación entre efectividad y resultado del partido en la Liga Española de Waterpolo)

Retos ◽  
2021 ◽  
Vol 41 ◽  
pp. 798-803
Author(s):  
Enrique García Ordóñez ◽  
Carlos Touriño González
Keyword(s):  
Discriminant Analysis ◽  
Success Rate ◽  
Model Test ◽  
Generalized Linear Model ◽  
Effect Sizes ◽  
Water Polo ◽  
Univariate Anova ◽  
Modelo Lineal ◽  
Multivariate Discriminant ◽  
Power Play

  The purpose of the present study was to identify the indicators of offensive effectiveness which best discriminate by match score (favourable, balanced or unfavourable) in water polo. The sample comprised 88 regular season games (2011-2014) from the Spanish Professional Water Polo League. Univariate (ANOVA test; Kruskal-Wallis test and Generalized Linear Model test (GLM)) and multivariate (Discriminant) analysis were used to compare favourable, balanced or unfavourable games, and effect sizes of the differences for the indicators were calculated. The results showed that favourable games had averages that were significantly higher for the success rate in even attacks and shots, power-play attacks and shots, counterattack and counterattack shots, shots from zone 1, 2, 3, 4, 5 and 6, drive shots, and shots after 1, 2 and more than 2 fakes. The indicators of offensive effectiveness that most discriminated were the success rate for drive shots (SC=-.624), even attacks and shots (SC=-.359 and SC=-.322, respectively), and for power-play actions and shots (SC=-.343 and SC=-.321, respectively). These results could help coaches when planning training and competition, providing them with the percentages of offensive effectiveness that must be reinforced in order to have more chances to win the match. This information can help coaches to evaluate their teams and to design training aimed at improving their weakest skills.  Resumen: El objetivo del presente estudio fue identificar los indicadores de eficacia ofensiva que mejor discriminan en función del resultado del partido (favorable, equilibrado o desfavorable) en el waterpolo. La muestra estuvo formada por 88 partidos de temporada regular (2011-2014) de la Liga Española de Waterpolo Profesional. Se utilizaron análisis univariados (prueba ANOVA; prueba de Kruskal Wallis y prueba del Modelo Lineal Generalizado (GLM)) y multivariante (discriminante) para comparar resultados favorables, equilibrados o desfavorables, y se calcularon los tamaños del efecto de las diferencias para los indicadores. Los resultados mostraron que los equipos con resultado favorables tenían promedios significativamente más altos para la tasa de efectividad en ataques y lanzamientos en igualdad, ataques y lanzamientos en superioridad, ataques y lanzamientos de contraataque, lanzamientos de zona 1, 2, 3, 4, 5 y 6, lanzamientos directos y después de 1, 2 y más de 2 efectividad en lanzamientos directos (SC=-.624), ataques y lanzamientos en igualdad (SC=-.359 y SC=-.322, respectivamente), y ataques y lanzamientos en superioridad (SC=-.343 y SC=-.321, respectivamente). Estos resultados podrían ayudar a los entrenadores a la hora de planificar los entrenamientos y la competición, proporcionándoles los porcentajes de efectividad ofensiva que se deben reforzar para tener más posibilidades de ganar el partido. Puede ayudar a los entrenadores a evaluar a sus equipos y diseñar entrenamientos destinados a mejorar sus habilidades más débiles.

An Introduction to Discriminant Analysis

1989 ◽  
Vol 22 (3) ◽  
pp. 158-168 ◽  
Author(s):  
Carl J Huberty ◽  
Richard M. Barton
Keyword(s):  
Discriminant Analysis

Brief Report. The PCL-R and Gender

2000 ◽  
Vol 16 (3) ◽  
pp. 147-149 ◽  
Author(s):  
Martin Grann
Keyword(s):  
Gender Differences ◽  
Sexual Behavior ◽  
Discriminant Analysis ◽  
Juvenile Delinquency ◽  
Violent Offenders ◽  
Matched Pairs ◽  
Psychopathy Checklist ◽  
Psychopathy Checklist Revised ◽  
And Gender

Summary: Hare's Psychopathy Checklist - Revised (PCL-R; Hare, 1991 ) was originally constructed for use among males in correctional and forensic settings. In this study, the PCL-R protocols of 36 matched pairs of female and male violent offenders were examined with respect to gender differences. The results indicated a few significant differences. By means of discriminant analysis, male Ss were distinguished from their female counterparts through their relatively higher scores on “callous/lack of empathy” (item 8) and “juvenile delinquency” (item 18), whereas the female Ss scored relatively higher on “promiscuous sexual behavior” (item 11). Some sources of bias and possible implications are discussed.

The Assessment of Fear of Flying: Elaboration and Validation of a Videotape as an Analogous Situation of a Flight1

1997 ◽  
Vol 13 (2) ◽  
pp. 118-130 ◽  
Author(s):  
Juan I. Capafóns ◽  
Carmen D. Sosa ◽  
Manuel Herrero ◽  
Conrado Viña
Keyword(s):  
Heart Rate ◽  
Discriminant Analysis ◽  
Post Treatment ◽  
Subjective Measure ◽  
Physiological Measures ◽  
Personal Safety ◽  
Metal Detector ◽  
Fear Of Flying ◽  
Situational Anxiety ◽  
Treatment Measures

The results are presented for the validation of a videotape as an analogous situation for a flight. The video includes the most significant elements of a flight by air: confirmation of the flight, packing, going to the airport, checking-in, going through the metal-detector, departure lounge, boarding the plane, demonstration of the personal safety drills, interiors and exteriors during the flight and landing. Two physiological measures are used for validation (heart rate and temperature) and a subjective measure (situational anxiety, SA). The results (both t-tests and the discriminant analysis) indicate that the videotape is able to discriminate between phobics and non-phobics of flying in the three variables considered. With respect to sensitivity in detecting change produced by various treatments in clients with phobia of flying, the results are also satisfactory. A greater differentiation is produced between the pre-post treatment measures, both in subjective and in the physiological measures.

Comparison of Examinees’ and Doctors’ Judgement of Health Status Using Data in an AMHTS

1984 ◽  
Vol 23 (01) ◽  
pp. 15-22
Author(s):  
Y. Sekita ◽  
T. Ohta ◽  
M. Inoue ◽  
H. Takeda
Keyword(s):  
Health Status ◽  
Discriminant Analysis ◽  
Explanatory Power ◽  
Laboratory Data ◽  
Subjective Symptom ◽  
Health Conditions ◽  
Testing System ◽  
Multiple Discriminant Analysis ◽  
Canonical Axis ◽  
Using Data

SummaryJudgements of examinees’ health status by doctors and by the examinees themselves are compared applying multiple discriminant analysis. The doctors’ judgements of the examinees’ health status are studied comparatively using laboratory data and the examinees’ subjective symptom data.This data was obtained in an Automated Multiphasic Health Testing System. We discuss the health conditions which are significant for the judgement of doctors about the examinees. The results show that the explanatory power, when using subjective symptom data, is fair in the case of the doctors’ judgement. We found common variables, such as nervousness, lack of perseverance etc., which form the first canonical axis.

Use of Posterior Probabilities to Evaluate Methods of Discriminant Analysis

1981 ◽  
Vol 20 (04) ◽  
pp. 207-212 ◽  
Author(s):  
J. Hermans ◽  
B. van Zomeren ◽  
J. W. Raatgever ◽  
P. J. Sterk ◽  
J. D. F. Habbema
Keyword(s):  
Experimental Data ◽  
Discriminant Analysis ◽  
Posterior Probabilities

By means of a case study the choice between several methods of discriminant analysis is presented. Experimental data of a two-groups problem with one or two variables is analysed. The different methods are compared according to posterior probabilities which can be computed for each subject and which are the basis of discriminant analysis. These posterior probabilities are analysed graphically as well as numerically.

Discriminant Analysis and its Applications in Epidemiology

1980 ◽  
Vol 19 (04) ◽  
pp. 220-226 ◽  
Author(s):  
P. A. Lachenbruch ◽  
W. R. Clarke
Keyword(s):  
Discriminant Analysis ◽  
Historical Review ◽  
Review Article ◽  
Logistic Discrimination

This review article discusses current use of discriminant analysis in epidemiology. Contents include historical review, simple extensions and generalizations, examples, evaluation of rules, logistic discrimination, and robustness.

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