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Kei-Hoi Cheung, PhD

Professor of Biomedical Informatics & Data Science; Professor, Biostatistics

Research Summary

As the number of life science databases and analytic tools increase, the interoperation of such databases and tools has become important and challenging. We tackle this challenge by exploring efficient and innovative approaches involving the use of ontologies, semantic web, metadata, natural language processing and high performance computing. Dr. Cheung has been collaborating with many faculty members in different departments and core facilities including Genetics, Biology, Computer Science, Biostatistics, and Yale Keck Protein Profiling Facility. His research has been carried out in the context of integrating and analyzing: a) genomics data, b) proteomics data including mass spectrometry (MS) data, c) immunology data and d) neuroscience data.

Specialized Terms: Genetic database; Tool interpolation

Extensive Research Description

Ongoing Projects:

  • Yale Protein Expression Database (YPED). YPED is an institution-wide database for use by proteomics researchers at Yale and outside of Yale
  • Human Immunology Project Consortium (HIPC). HIPC was established by NIAID, which generates a wide variety of phenotypic and molecular data from well-characterized patient cohorts, including genome-wide
    expression profiling, high-dimensional flow cytometry and serum cytokine concentrations. The adoption and adherence
    to data standards is critical to enable data integration across HIPC centers, and facilitate data re-use by the wider scientific community. One key component of HIPC involves data standardization effort, along with the infrastructure that has been developed.
  • Center for Expanded Data Annotation and Retrieval (CEDAR). CEDAR is part of the Big Data to Knowledge (BD2K) initiative funded by NIH. It studies the creation of comprehensive and expressive metadata for biomedical datasets to facilitate data discovery, data interpretation, and data reuse.
  • Clinical Natural Language Processing (NLP). To extract and retrieve information from large amounts of clinical notes (unstructured data) for facilitating clinical research, a variety of NLP techniques including the incorporation of ontologies have been explored in different domains including lung/colon cancer, post-traumatic stress disorder, psychogenic nonepileptic seizure, and chronic pain.


Research Interests

Anesthesiology; Emergency Medicine; Medical Informatics; Natural Language Processing; Technology; Databases, Genetic

Selected Publications