The Chinese University of Hong Kong
Department of Computer Science and Engineering


Title: Bridging the gap between electronic health records and tensor factorization
Date: July 25, 2017 (Tuesday)
Time: 4:30 p.m. - 5:30 p.m.
Venue: Room 121, 1/F, Ho Sin-hang Engineering Building,
The Chinese University of Hong Kong,
Shatin, N.T.
Speaker: Prof. Joyce C. HO
Assistant Professor
Department of Mathematics and Computer Science
Emory University, USA



Electronic health records (EHRs) are an increasingly important source of patient information. However, one major challenge is the transformation of this high-dimensional data for rapid consumption by healthcare professionals. Advances in dimensionality reduction approaches can be used to extract concepts from EHRs, yet the question remains how to yield interpretable results and evaluate their meaningfulness. In this talk, I will present some of my work towards addressing these challenges. The first part focuses on the use of sparse, nonnegative tensor factorization models to explore and distill EHRs with minimal human supervision. Experimental results demonstrate the effectiveness of our models to extract interpretable concepts from complex health data. In the second part, I will describe PheKnowCloud, a scalable framework that produces phenotype evidence using online medical literature. The tool allows domain experts to examine evidence sets for supplied concepts to speed up the validation process. With these validated phenotypes, healthcare professionals can better understand their patient population.



Joyce Ho is an assistant professor in Computer Science at Emory University. She has a Ph.D. in Electrical and Computer Engineering from the University of Texas at Austin, and an M.A. and B.S. in Electrical Engineering and Computer Science from Massachusetts Institute of Technology. Her research involves the development of novel data mining and machine learning algorithms to address problems in healthcare. Joyce has published papers in premier journals and conferences including KDD, AISTATS, and TMIS. Her work received the best paper award at the 2017 AMIA Joint Summits on Translational Science. Joyce has served on numerous program committees for top healthcare informatics conferences and is a conference co-chair for the 2017 CIKM short paper track. She has also co-founded a successful healthcare data analytics company, Accordion Health.


Enquiries: Ms Ricola Lo at tel 3943 8439

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