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研討會總覽

Modeling Healthcare Data Using Multiple-Channel Latent Dirichlet Allocation

2016/12/09
  • 研討會日期 : 2016-12-09
  • 時間 : 14:30
  • 主講人 : Professor Hsin-Min Lu
  • 主持人 : Professor Tzu-Ting Yang
  • 地點 : Conference Room B110
  • 演講者簡介 : Prof. Lu received his Ph.D. in Management Information Systems from University of Arizona in 2010. He is currently an Associate Professor at National Taiwan University. His research fields are Business Analytics, Data/Text/Web Mining, Health Informatics, and Applied Econometrics.
  • 演講摘要 : Information and communications technologies have enabled healthcare institutions to accumulate large amounts of healthcare data that include diagnoses, medications, and additional contextual information such as patient demographics. To gain a better understanding of big healthcare data and to develop better data-driven clinical decision support systems, we propose a novel multiple-channel latent Dirichlet allocation (MCLDA) approach for modeling diagnoses, medications, and contextual information in healthcare data. The proposed MCLDA model assumes that a latent health status group structure is responsible for the observed co-occurrences among diagnoses, medications, and contextual information. Using a real-world research testbed that includes one million healthcare insurance claim records, we investigate the utility of MCLDA. Our empirical evaluation results suggest that MCLDA is capable of capturing the comorbidity structures and linking them with the distribution of medications. Moreover, MCLDA is able to identify the pairing between diagnoses and medications in a record based on the assigned latent groups. MCLDA can also be employed to predict missing medications or diagnoses given partial records. Our evaluation results also show that, in most cases, MCLDA outperforms alternative methods such as logistic regressions and the k-nearest-neighbor (KNN) model for two prediction tasks, i.e., medication and diagnosis prediction. Thus, MCLDA represents a promising approach to modeling healthcare data for clinical decision support.