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Unusual customer response identification and visualization based on text mining and anomaly detection

Authors
Seo, SeungwanSeo, DeokseongJang, MyeongjunJeong, JaeyunKang, Pilsung
Issue Date
15-4월-2020
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
Voice of customers; Keyword network; Local outlier factor; TF-IDF
Citation
EXPERT SYSTEMS WITH APPLICATIONS, v.144
Indexed
SCIE
SCOPUS
Journal Title
EXPERT SYSTEMS WITH APPLICATIONS
Volume
144
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/56614
DOI
10.1016/j.eswa.2019.113111
ISSN
0957-4174
Abstract
The Vehicle Dependability Study (VDS) is a survey study on customer satisfaction for vehicles that have been sold for three years. VDS data analytics plays an important role in the vehicle development process because it can contribute to enhancing the brand image and sales of an automobile company by properly reflecting customer requirements retrieved from the analysis results when developing the vehicle's next model. Conventional approaches to analyzing the voice of customers (VOC) data, such as VDS, have focused on finding the mainstream of customer responses, many of which are already known to the enterprise. However, detecting and visualizing notable opinions from a large amount of VOC data are important in responding to customer complaints. In this study, we propose a framework for identifying unusual but significant customer responses and frequently used words therein based on distributed document representation, local outlier factor, and TF-IDF methods. We also propose a procedure that can provide useful information to vehicle engineers by visualizing the main results of the framework. This unusual customer response detection and visualization framework can accelerate the efficiency and effectiveness of many VOC data analytics. (C) 2019 Elsevier Ltd. All rights reserved.
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Kang, Pil sung
공과대학 (산업경영공학부)
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