I-Fei Chen

Dr. I-Fei Chen


Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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2 May 2023 in Frontiers in Psychology
Verified
Journal Article
Open access
VCVincent Chieh-Ying Chang
Vincent Chieh-Ying Chang
ICI-Fei Chen
I-Fei Chen
Introduction: Based on such physiological data as pupillometry collected in an eye-tracking experiment, the study has further confirmed the effect of directionality on cognitive loads during L1 and L2 textual translations by novice translators, a phenomenon called “translation asymmetry” suggested by the Inhibitory Control Model, while revealing that machine learning-based approaches can be usefully applied to the field of Cognitive Translation and Interpreting Studies.Methods: Directionality was the only factor guiding the eye-tracking experiment where 14 novice translators with the language combination of Chinese and English were recruited to conduct L1 and L2 translations while their pupillometry were recorded. They also filled out a Language and Translation Questionnaire with which categorical data on their demographics were obtained.Results: A nonparametric related-samples Wilcoxon signed rank test on pupillometry verified the effect of directionality, suggested by the model, during bilateral translations, verifying “translation asymmetry” at atextuallevel. Further, using the pupillometric data, together with the categorical information, the XGBoost machine-learning algorithm yielded a model that could reliably and effectively predict translation directions.Conclusion: The study has shown that translation asymmetry suggested by the model was valid at atextuallevel, and that machine learning-based approaches can be gainfully applied to Cognitive Translation and Interpreting Studies.

11 February 2025 in Mathematics
Verified
Journal Article
Open access
PDF file
Chih-Jen SuChih-Jen Su
Chih-Jen Su
ICI-Fei Chen
I-Fei Chen
Tzong-Ru TsaiTzong-Ru Tsai
Tzong-Ru Tsai
TWTzu-Hsuan Wang
Tzu-Hsuan Wang
YLYuhlong Lio
Yuhlong Lio
Resource-intensiveness often occurs in modern industrial settings; meanwhile, common issues and irregular patterns in production can lead to defects and variations in work-piece dimensions, negatively impacting products and increasing costs. Utilizing traditional process control charts to monitor the process and identify potential anomalies is expensive when intensive resources are needed. To conquer these downsides, algorithms for control chart pattern recognition (CCPR) leverage machine learning models to detect non-normality or normality and ensure product quality is established, and novel approaches that integrate the support vector machine (SVM), random forest (RF), and K-nearest neighbors (KNN) methods with the model selection criterion, named SVM-, RF-, and KNN-CCPR, respectively, are proposed. The three CCPR approaches can save sample resources in the initial process monitoring, improve the weak learner’s ability to recognize non-normal data, and include normality as a special case. Simulation results and case studies show that the proposed SVM-CCPR method outperforms the other two competitors with the highest recognition rate and yields favorable performance for quality control.

22 May 2025 in Mathematics
Verified
Journal Article
Open access
PDF file
Chih-Jen SuChih-Jen Su
Chih-Jen Su
ICI-Fei Chen
I-Fei Chen
Tzong-Ru TsaiTzong-Ru Tsai
Tzong-Ru Tsai
YLYuhlong Lio
Yuhlong Lio
The zero-inflated Bernoulli model, enhanced with elastic net regularization, effectively handles binary classification for zero-inflated datasets. This zero-inflated structure significantly contributes to data imbalance. To improve the ZIBer model’s ability to accurately identify minority classes, we explore the use of momentum and Nesterov’s gradient descent methods, particle swarm optimization, and a novel hybrid algorithm combining particle swarm optimization with Nesterov’s accelerated gradient techniques. Additionally, the synthesized minority oversampling technique is employed for data augmentation and training the model. Extensive simulations using holdout cross-validation reveal that the proposed hybrid algorithm with data augmentation excels in identifying true positive cases. Conversely, the hybrid algorithm without data augmentation is preferable when aiming for a balance between the metrics of recall and precision. Two case studies about diabetes and biopsy are provided to demonstrate the model’s effectiveness, with performance assessed through K-fold cross-validation.

7 August 2026 in Sustainability
Verified
Journal Article
Open access
PDF file
LYLi-Ren Yang
Li-Ren Yang
ICI-Fei Chen
I-Fei Chen
HCHsi-Chang Chang
Hsi-Chang Chang
Green technological innovation (GTI) has emerged as a critical driver for achieving strategic objectives of projects, particularly in the context of sustainable new product development (NPD). Although prior studies have suggested that innovation can enhance project outcomes, limited attention has been given to clarifying the contribution of GTI to NPD performance. The lack of conclusive evidence regarding the effectiveness of GTI may partly explain its relatively limited adoption in practice. Therefore, this study aims to investigate the impact of GTI implementation on NPD performance and further explores the moderating influence of project characteristics on this relationship. The empirical findings reveal that multiple dimensions of GTI implementation—including green resource allocation, green manufacturing, green organizational practices, and green planning—significantly improve both product performance and market performance. Furthermore, the findings indicate that project characteristics, such as team size, R&D type, information availability, and material availability, significantly moderate the relationship between overall GTI implementation and NPD performance, suggesting that the effectiveness of GTI depends on specific project characteristics.

6 October 2025 in Mathematics
Verified
Journal Article
Open access
PDF file
TLTzu-Chi Liu
Tzu-Chi Liu
ChihTe YangChihTe Yang
ChihTe Yang
ICI-Fei Chen
I-Fei Chen
Chi-Jie LuChi-Jie Lu
Chi-Jie Lu
Accurately forecasting the interval-valued green electricity (GE) supply is challenging due to the unpredictable and instantaneous nature of its source; yet, reliable multi-step-ahead forecasting is essential for providing the lead time required in operations, resource allocation, and system management. This study proposes an augmented-feature multi-step interval-valued forecasting (AFMIF) scheme that aims to address the challenges in forecasting interval-valued GE supply data by extracting additional features hidden within an interval. Unlike conventional methods that rely solely on original interval bounds, AFMIF integrates augmented features that capture statistical and dynamic properties to reveal hidden patterns. These features include basic interval boundaries and statistical distributions from an interval. Three effective forecasting methods, based on gated recurrent units (GRUs), long short-term memory (LSTM), and a temporal convolutional network (TCN), are constructed under the proposed AFMIF scheme, while the mean ratio of exclusive-or (MRXOR) is used to evaluate the forecasting performance. Two different real datasets of wind-based GE supply data from Belgium and Germany are used as illustrative examples. Empirical results demonstrate that the proposed AFMIF scheme with GRUs can generate promising results, achieving a mean MRXOR of 0.7906 from the Belgium data and 0.9719 from the Germany data for one-step- to three-steps-ahead forecasting. Moreover, the TCN yields an average improvement of 13% across all time steps with the proposed scheme. The results highlight the potential of the AFMIF scheme as an effective alternative approach for accurate multi-step-ahead interval-valued GE supply forecasting that offers practical benefits supporting GE management.