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Coxian Phase-type Distributions, Survival Trees and the Gini Index Collaborating together to Provide an in-Depth Knowledge of the Distribution of the Length of University Studies

Authors: Kalamatianou, A; Marshall A. H; ZENGA, MARIANGELA;

Coxian Phase-type Distributions, Survival Trees and the Gini Index Collaborating together to Provide an in-Depth Knowledge of the Distribution of the Length of University Studies

Abstract

This paper introduces a framework of techniques that separately have in the past been developed and used on survival data but are now proposed to be separate parts of a sequence of stages in a much larger modelling process. By integrating these methods to¬-gether, it is proposed that the survival data undergoes a much more thorough investiga¬tion and as a result yields a greater in-depth reporting of the survival distributions, and the covariates that best characterise the survival distribution behaviours in a manner that retains the simple straightforward way in which these methods are clear and easy to use. The framework is applied to a specific data set to study the Length of Studies (LoS) of students at a Greek university enrolled on courses until the event of interest occurs, that is, the depar¬tu¬re from the course due to graduation, dropout or extensive period of study time. Results conclude that the approaches applied in this framework offer a more in-depth insight into student behaviour highlighting also the most influential characteristics.

Countries
Italy, United Kingdom
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Keywords

Coxian phase-type distributions, Survival trees, Gini index, Length of uni¬ver¬sity studies, 004

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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