Machine Learning |https://www.khaichiong.com/tags/machine-learning/Machine LearningHugoBlox Kit (https://hugoblox.com)en-usSun, 26 Apr 2026 00:00:00 +0000https://www.khaichiong.com/media/icon_hu_da05098ef60dc2e7.pngMachine Learninghttps://www.khaichiong.com/tags/machine-learning/Learning Heterogeneity from Unstructured Data: An Application to Chatbot Personalizationhttps://www.khaichiong.com/publications/chatbot-personalization-unstructured-data/Sun, 26 Apr 2026 00:00:00 +0000https://www.khaichiong.com/publications/chatbot-personalization-unstructured-data/<p>Working paper.</p>Random Projection Estimation of Discrete-Choice Models with Large Choice Setshttps://www.khaichiong.com/publications/random-projection-estimation-discrete-choice/Tue, 01 Jan 2019 00:00:00 +0000https://www.khaichiong.com/publications/random-projection-estimation-discrete-choice/<p>Chiong and Shum tackle the computational challenges posed by discrete-choice models with large choice sets. Their random projection estimator dramatically reduces dimensionality, allowing researchers to analyze complex choice data efficiently. The approach is particularly useful for modern marketing and transportation applications involving many alternatives.</p>