arXiv Machine Learning

Analysis of Public Schools Educational Performance Based on Causal Models and Hierarchical Clustering

arXiv:2607. 14124v1 Announce Type: cross Abstract: The increasing availability of large-scale educational datasets has expanded the use of quantitative methods for investigating school performance.

arXiv AI
Aug 26

Causal Modelling of Support Interventions for Student Competency Assessment

The paper proposes a structural causal modelling framework for student competency assessment, moving beyond traditional probabilistic models like item response theory. It introduces a protocol for constructing such models, emphasizing the explicit representation of interventions (e.g., hints) and counterfactual analysis. The authors illustrate the approach with data from an assessment of compulsory school students’ algorithmic skills.

By Francesca Mangili, Alessandro Antonucci, Rafael Caba\~nas
arXiv Machine Learning
Jul 30

Archetypes or ability? Clustering for modelling student mathematical competence

arXiv:2607. 26063v1 Announce Type: cross Abstract: Personalised learning systems often assume that mathematical ability is combined of discrete abilities, acquired sequentially and dependent upon first acquiring foundational abilities, and students often report different strengths.

By Benjamin Mawdsley, Tom Quilter, Richard Turner, Sarah Jackson, Paul Edwards
arXiv Machine Learning
Sep 25

Limited Structural Reliability in Public Educational Prediction Benchmarks: A Four-Dimension Audit of Seven Datasets

The study audited seven public educational prediction datasets using four pre‑modeling reliability checks—baseline gap, split instability, null separation, and metadata adequacy under group‑aware holdout. Only three datasets passed all checks; the others failed either group‑aware generalization tests or lacked necessary provenance metadata. The audit revealed that cross‑group fragility, rather than weak iid performance, was the dominant failure mode, and that increasing model complexity did not resolve these structural issues.

By Yan Ma, Lizhuo Zhang
arXiv Machine Learning
Sep 23

A Hybrid AI Framework for Academic Advising: Integrating Ensemble-Based Grade Prediction and a Rule-Based Expert System

The paper presents a hybrid AI framework for academic advising that combines an ensemble-based grade prediction model with a rule‑based expert system. Students from the University of Birjand were clustered using Gaussian Mixture Models, and a Stacking Ensemble of Random Forest, Gradient Boosting, and MLP was trained per cluster, achieving an aggregated RMSE of 2.35. The expert system then uses these predictions alongside institutional regulations to give real‑time feedback such as GPA forecasts, probation warnings, and course recommendations.

By Hamid Saadatfar, Rohollah Hedayati-Nasab, AmirHossein Eshghi, Arash Hajihashemi
arXiv Machine Learning
Aug 11

Crowd-Sourced Geographies of Income: Using Google Maps Points of Interest as High-Frequency Proxies for Sub-Municipal Income Estimation in Sao Paulo, Brazil

arXiv:2608. 07871v1 Announce Type: cross Abstract: Accurate, up-to-date income data at the sub-municipal scale is essential for social policy in middle-income countries, yet in Brazil it depends on a costly decennial census whose intercensal gap recently exceeded a decade.

By Adrienne C. Kinney, Anya Workman, Ademar Takeo Akabane, Jenna Barac, Paulo Fernando Braga Carvalho, Jeova Farias, Fernando Nascimento, Paulo Ricardo da Silva Oliveira
arXiv Machine Learning
1d ago

One Mastery Threshold Does Not Fit All Knowledge Tracing Models

The study investigates how a single mastery threshold can produce divergent outcomes across different knowledge tracing (KT) models. By evaluating six KT models on four datasets with thresholds ranging from 0.50 to 0.99, the authors find that Bayesian Knowledge Tracing (BKT) is relatively insensitive to threshold changes, whereas neural models become increasingly selective as thresholds rise. The optimal threshold varies widely across models and instructional settings, and stricter thresholds can disproportionately limit advancement for weaker students.

By Xianghui Meng, Yujing Zhang, Jionghao Lin