Eunhye Kim, HongGeun Ji, Jina Kim, Eunil Park, Jay Y. Ohm

KIPS Transactions on Software and Data Engineering, Vol. 10, No. 9, pp. 359-366, Sep. 2021
https://doi.org/10.3745/KTSDE.2021.10.9.359,   PDF Download:
Keywords: Apartment, Defect, Repair Tasks, Sub Category, Finishing Works, Machine Learning
Abstract

A number of construction companies in Korea invest considerable human and financial resources to construct a system for managing apartment defect data and for categorizing repair tasks. Thus, this study proposes machine learning models to automatically classify defect complaint text-data into one of the sub categories of ‘finishing work’ (i.e., one of the defect repair tasks). In the proposed models, we employed two word representation methods (Bag-of-words, Term Frequency-Inverse Document Frequency (TF-IDF)) and two machine learning classifiers (Support Vector Machine, Random Forest). In particular, we conducted both binary- and multi- classification tasks to classify 9 sub categories of finishing work: home appliance installation work, paperwork, painting work, plastering work, interior masonry work, plaster finishing work, indoor furniture installation work, kitchen facility installation work, and tiling work. The machine learning classifiers using the TF-IDF representation method and Random Forest classification achieved more than 90% accuracy, precision, recall, and F1 score. We shed light on the possibility of constructing automated defect classification systems based on the proposed machine learning models.

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