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DOI: 10.14569/IJACSA.2022.0130710
PDF

Solving the Imbalanced and Limited Data Labeled for Automated Essay Scoring using Cost Sensitive XGBoost and Pseudo-Labeling

Author 1: Marvina Pramularsih
Author 2: Mardhani Riasetiawan

International Journal of Advanced Computer Science and Applications(IJACSA), Volume 13 Issue 7, 2022.

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Abstract: There are two main problems on forming the Automatic Essay Scoring Model. They are the datasets having imbalanced amount of the right and wrong answers and the minimal use of labeled data in the model training. The model forming based on these problems is divided into three main points, namely word representation, Cost-Sensitive XGBoost Classification, and adding unlabeled data with the Pseudo-Labeling Technique. The essay answer data is converted into a vector using the trained word vector fastText. Furthermore, the classification of unlabeled data was carried out using the Cost-Sensitive XGBoost Method. The data labeled by the classification model is added as training data for the new classification model form. The process is carried out iteratively. This research is about using the combination of Cost-Sensitive XGBoost Classification and Pseudo-Labeling which is expected to solve the problems. For the 0th iteration, the dataset having a ratio of the amount of "right" labeled data with the amount of "right" labeled data is close to 1, in other words a balanced dataset or a ratio that is more than 1 produces a model with better performance. Thus, the selection of training data at an early stage must pay attention to this ratio. In addition, the use of the Hybrid Method on these datasets can save labeled data 56 times compared to the AdaBoost Method. Hybrid model is able to produce F1-Measure more than 95.6%, so it can be concluded that the Hybrid Method, which combines the XGBoost and Pseudo-Labeling Cost-Sensitive Classification with Self Training, is able to overcome the problem of unbalanced datasets and data limited label.

Keywords: Imbalanced data; limited labeled data; automated essay scoring; cost sensitive XGBoost; pseudo-labeling

Marvina Pramularsih and Mardhani Riasetiawan, “Solving the Imbalanced and Limited Data Labeled for Automated Essay Scoring using Cost Sensitive XGBoost and Pseudo-Labeling” International Journal of Advanced Computer Science and Applications(IJACSA), 13(7), 2022. http://dx.doi.org/10.14569/IJACSA.2022.0130710

@article{Pramularsih2022,
title = {Solving the Imbalanced and Limited Data Labeled for Automated Essay Scoring using Cost Sensitive XGBoost and Pseudo-Labeling},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2022.0130710},
url = {http://dx.doi.org/10.14569/IJACSA.2022.0130710},
year = {2022},
publisher = {The Science and Information Organization},
volume = {13},
number = {7},
author = {Marvina Pramularsih and Mardhani Riasetiawan}
}



Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

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