Results 31 to 40 of about 534,689 (331)

Multimodal Affect Models: An Investigation of Relative Salience of Audio and Visual Cues for Emotion Prediction

open access: yesFrontiers in Computer Science, 2021
People perceive emotions via multiple cues, predominantly speech and visual cues, and a number of emotion recognition systems utilize both audio and visual cues.
Jingyao Wu   +4 more
doaj   +1 more source

Maximally selected chi-square statistics for at least ordinal scaled variables [PDF]

open access: yes, 2005
The association between a binary variable Y and a variable X with an at least ordinal measurement scale might be examined by selecting a cutpoint in the range of X and then performing an association test for the obtained 2x2 contingency table using the ...
Boulesteix, Anne-Laure
core   +2 more sources

Interval-Valued Intuitionistic Fuzzy Synthetic Measure (I-VIFSM) Based on Hellwig’s Approach in the Analysis of Survey Data

open access: yesMathematics, 2021
Several complex phenomena are measured with the use of tools in the form of a questionnaire where the values of criteria are assessed by the respondents using ordinal scales.
Ewa Roszkowska, Bartłomiej Jefmański
doaj   +1 more source

Fruit production is influenced by tree size and size‐asymmetric crowding in a wet tropical forest

open access: yesEcology and Evolution, 2019
In tropical forest communities, seedling recruitment can be limited by the number of fruit produced by adults. Fruit production tends to be highly unequal among trees of the same species, which may be due to environmental factors.
David M. Minor, Richard K. Kobe
doaj   +1 more source

Quantifying sudden changes in dynamical systems using symbolic networks [PDF]

open access: yes, 2015
We characterise the evolution of a dynamical system by combining two well-known complex systems' tools, namely, symbolic ordinal analysis and networks.
Arenas, Alex   +7 more
core   +4 more sources

On Two Mixture-Based Clustering Approaches Used in Modeling an Insurance Portfolio

open access: yesRisks, 2018
We review two complementary mixture-based clustering approaches for modeling unobserved heterogeneity in an insurance portfolio: the generalized linear mixed cluster-weighted model (CWM) and mixture-based clustering for an ordered stereotype model (OSM).
Tatjana Miljkovic   +1 more
doaj   +1 more source

Qualitative - Binary, Nominal and Ordinal Data Analysis in Medical Science

open access: yesNational Journal of Community Medicine, 2022
The outcome of any medical research is belonged to the human beings. The correct application of statistical test has its paramount importance. This article provides the details of categorical data analysis test with example and with its interpretation ...
Swati Patel
doaj   +1 more source

Testing Measurement Invariance with Ordinal Missing Data: A Comparison of Estimators and Missing Data Techniques [PDF]

open access: yes, 2019
Ordinal missing data are common in measurement equivalence/invariance (ME/I) testing studies. However, there is a lack of guidance on the appropriate method to deal with ordinal missing data in ME/I testing.
Chen, Po-Yi   +4 more
core   +2 more sources

How Good are Our Measures? Investigating the Appropriate Use of Factor Analysis for Survey Instruments

open access: yesJournal of MultiDisciplinary Evaluation, 2015
Background: Evaluation work frequently utilizes factor analysis to establish the dimensionality, reliability, and stability of surveys. However, survey data is typically ordinal, violating the assumptions of most statistical methods, and thus is often ...
Megan Sanders   +2 more
doaj   +1 more source

Smoothing in Ordinal Regression: An Application to Sensory Data

open access: yesStats, 2021
The so-called proportional odds assumption is popular in cumulative, ordinal regression. In practice, however, such an assumption is sometimes too restrictive.
Ejike R. Ugba   +2 more
doaj   +1 more source

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