Análise de agrupamento (Clusters Analysis) em duas etapas no ensino à distância: Uma forma de reduzir as lacunas na literatura científica no ensino à distância
Bibliographic record
Abstract
Background: Dropout rates are often very high in distance education. A plethora of research has been conducted to identify the contributing factors; however, the majority of the findings are inconclusive and point to the fact that it is difficult to isolate a single explanatory factor. While frequently examined factors are personal and environmental, there is less research on the relationship between course design and retention or dropout. Method: This paper presents a study involving two-stage cluster analysis of 623 variables from 19 university courses at one open and distance education (ODE) institution. To this end, the current study grouped the courses into five types based on 22 variables. Results: The results indicate that certain sociodemographic variables become a risk factor for course dropout depending on their distribution in the standard courses. Conclusions: This result highlights the importance of instructional design in the ODE retention and dropout equation and helps explain, in part, why previous studies have not reached a consensus on which variables should be considered to explain dropout rates. / Contexto: Embora as taxas de abandono escolar sejam frequentemente muito elevadas no ensino à distância, tem sido realizada muita investigação para identificar os fatores que influenciam o abandono escolar ou a persistência neste modo de aprendizagem. As conclusões destes estudos nem sempre convergem e salientam que é difícil isolar um único fator explicativo. Embora a maioria dos fatores sejam pessoais e ambientais, há menos investigação sobre a relação entre a conceção e a retenção ou desistência do curso. Método: Este estudo apresenta uma metodologia que envolve uma análise em duas fases de 623 variáveis de 19 cursos universitários de uma instituição de ensino à distância (EAD). Este estudo agrupou os cursos em cinco tipos de cursos com base em 22 variáveis. Resultados: Os resultados indicaram que certas variáveis sociodemográficas se tornam um fator de risco de desistência dos cursos, dependendo da sua distribuição nos cursos padrão. Conclusão: Esta metodologia sublinha a importância da conceção instrucional na equação de retenção e desistência da EAD e ajuda a explicar, em parte, porque é que estudos anteriores não chegaram a um consenso sobre quais as variáveis que devem ser utilizadas para explicar a desistência.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.004 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.005 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.007 | 0.004 |
| Open science | 0.003 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.008 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".