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A Class-Cluster k-Nearest Neighbors Method for Temporal In-Trouble Student Identification

  • Chau VoEmail author
  • Hua Phung NguyenEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11431)

Abstract

Temporal in-trouble student identification is a classification task at the program level that predicts a final study status of a current student at the end of his/her study time using the data gathered from the students in the past. Moreover, this task focuses on correct predictions for the in-trouble students whose predicted labels are at the lowest performance level. Educational datasets in this task have many challenging characteristics such as multiple classes, overlapping, and imbalance. Simultaneously handling these characteristics has not yet been investigated in educational data mining. For the existing general-purpose works, their methods are not straightforwardly applicable to the educational datasets. Therefore, in this paper, a novel method is proposed as an effective solution to the previously defined task. Combining the traditional k-nearest neighbors and clustering ensemble methods, our method is designed with three new features: relax the number k of the nearest neighbors, use a set of the cluster-based neighbors newly generated by partitioning the subspace of each class, and set four new criteria to decide a final class label rather than the majority voting scheme. As a result, it is a new lazy learning method able to provide correct predictions of more instances belonging to a positive minority class. In an empirical evaluation, higher Accuracy, Recall, and F-measure confirmed the effectiveness of our method as compared to some popular methods on our two real educational datasets and the benchmarking “Iris” dataset.

Keywords

Student classification Educational data mining k-nearest neighbors Clustering ensemble Fisher’s discriminant ratio Data imbalance 

Notes

Acknowledgments

This research is funded by Vietnam National University Ho Chi Minh City, Vietnam, under grant number C2017-20-18.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Ho Chi Minh City University of TechnologyVietnam National UniversityHo Chi Minh CityVietnam

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