A support vector regression based prediction model of affective responses for product form design

Authors:
Chih-Chieh Yang;Meng-Dar Shieh
Affiliations:
Department of Multimedia and Entertainment Science, Southern Taiwan University, 1 Nantai Street, Yung-Kang City, Tainan County 71005, Taiwan, ROC;Department of Industrial Design, National Cheng Kung University, No. 1, University Road, Tainan 70101, Taiwan, ROC
Venue:
Computers and Industrial Engineering
Year:
2010

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Abstract

In this paper, a state-of-the-art machine learning approach known as support vector regression (SVR) is introduced to develop a model that predicts consumers' affective responses (CARs) for product form design. First, pairwise adjectives were used to describe the CARs toward product samples. Second, the product form features (PFFs) were examined systematically and then stored them either as continuous or discrete attributes. The adjective evaluation data of consumers were gathered from questionnaires. Finally, prediction models based on different adjectives were constructed using SVR, which trained a series of PFFs and the average CAR rating of all the respondents. The real-coded genetic algorithm (RCGA) was used to determine the optimal training parameters of SVR. The predictive performance of the SVR with RCGA (SVR-RCGA) is compared to that of SVR with 5-fold cross-validation (SVR-5FCV) and a back-propagation neural network (BPNN) with 5-fold cross-validation (BPNN-5FCV). The experimental results using the data sets on mobile phones and electronic scooters show that SVR performs better than BPNN. Moreover, the RCGA for optimizing training parameters for SVR is more convenient for practical usage in product form design than the timeconsuming CV.