Results 11 to 20 of about 121,428 (266)

Leveraging deep learning to infer continuous predictions from ordinal labels in medical imaging. [PDF]

open access: yesPLOS Digital Health
In clinical medicine, variables like disease severity are often categorized into discrete ordinal labels such as normal/mild/moderate/severe. However, these labels, commonly used to train and evaluate disease severity prediction models, simplify an ...
Katharina V Hoebel   +9 more
doaj   +2 more sources

Statistical Analysis of Ordinal Response Variable: A Comparative Study [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية, 2022
Response variables in biological phenomena vary between three types: numerical response variables, ordinal categorical response variables, and nominal categorical response variables. In statistical studies, handling ordinal variables varies in accordance
Liqaa Alhamdany, Zaid Tariq Salah
doaj   +1 more source

A Summary Indicator Providing a Snapshot of Political Opinions when Variables are Ordinal

open access: yesInternational Journal of Empirical Economics, 2022
This paper deals with the evaluation of the relative performance of different groups when the achievements of the members of a group are summarised by the relative distribution of these achievements across various ordered categories.
Joseph Deutsch, Jacques Silber
doaj   +1 more source

Bivariate Distributions Underlying Responses to Ordinal Variables

open access: yesPsych, 2021
The association between two ordinal variables can be expressed with a polychoric correlation coefficient. This coefficient is conventionally based on the assumption that responses to ordinal variables are generated by two underlying continuous latent ...
Laura Kolbe, Frans Oort, Suzanne Jak
doaj   +1 more source

Median Distance Model for Likert-Type Items in Contingency Table Analysis

open access: yesRevstat Statistical Journal, 2023
Likert-type items (questions) are a widely used scale in questionnaire design. The “neutral” or “undecided” option may lead to misinterpretation and confusion about the results.
Serpil Aktas Altunay   +1 more
doaj   +1 more source

Sentiment as an Ordinal Latent Variable

open access: yesProceedings of the 17th Conference of the European Chapter of the Association for Computational Linguistics, 2023
Sentiment analysis has become a central tool in various disciplines outside of natural language processing. In particular in applied and domain-specific settings with strong requirements for interpretable methods, dictionary-based approaches are still a popular choice. However, existing dictionaries are often limited in coverage, static once annotation
Stoehr, Niklas; id_orcid0000-0003-2867-0236   +2 more
openaire   +2 more sources

Weighted Trajectory Analysis and Application to Clinical Outcome Assessment

open access: yesBioMedInformatics, 2023
The Kaplan–Meier (KM) estimator is widely used in medical research to estimate the survival function from lifetime data. KM estimation is a powerful tool to evaluate clinical trials due to simple computational requirements, its use of a logrank ...
Utkarsh Chauhan   +3 more
doaj   +1 more source

How to use χ2 test correctly——CMH χ2 tests for the data collected from the three kinds of R×C contingency tables

open access: yesSichuan jingshen weisheng, 2021
The purpose of this paper was to introduce the CMH χ2 test and SAS software implementation of the three kinds of R×C contingency table data. The first type was called “two-way unordered R×C contingency table data”.
Hu Chunyan, Hu Liangping
doaj   +1 more source

Why Ordinal Variables Can (Almost) Always Be Treated as Continuous Variables: Clarifying Assumptions of Robust Continuous and Ordinal Factor Analysis Estimation Methods

open access: yesFrontiers in Education, 2020
The analysis of factor structures is one of the most critical psychometric applications. Frequently, variables (i.e., items or indicators) resulting from questionnaires using ordinal items with 2–7 categories are used.
Alexander Robitzsch, Alexander Robitzsch
doaj   +1 more source

Scoring ordinal variables for constructing composite indicators

open access: yesStatistica, 2013
In order to provide composite indicators of latent variables, for example of customer satisfaction, it is opportune to identify the structure of the latent variable, in terms of the assignment of items to the subscales defining the latent variable ...
Marica Manisera
doaj   +1 more source

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