Assistant Professor of Biomedical Informatics

Contact Info:

Research Interests

Visweswaran's research interests lie in the application of Artificial intelligence and machine learning to problems in clinical medicine and bioinformatics with a specific focus on data mining of biomedical data, patient-specific predictive modeling, medical anomaly detection, and decision support systems.

Education

• MBBS, Jawaharlal Institute of Post-Graduate Medical Education and Research, Pondicherry, India, 1989
• MS in Physiology and Biophysics, University of Illinois at Urbana-Champaign, IL, 1996
• Residency in Neurology, Boston University, Boston, MA, 2000
• MS in Intelligent Systems (Biomedical Informatics track), University of Pittsburgh, 2004

Publications

Refereed Articles

• Wadhwa, R, Fridsma, DB, Saul, MI, Penrod, LE, Visweswaran, S, Cooper, GF, Chapman, W. Analysis of a Failed Clinical Decision Support System for Management of Congestive Heart Failure. In: Proceedings of the Fall Symposium of the American Medical Informatics Association (Nov 2008).
• Handler, SM, Hanlon, JT, Perera, S, Saul, MI, Fridsma, DB, Visweswaran, S, Studenski, SA, Roumani, YF, Castle, NG, Nace, DA, Becich, MJ. Assessing the Performance Characteristics of Signals Used by a Clinical Event Monitor to Detect Adverse Drug Reactions in the Nursing Home. In: Proceedings of the Fall Symposium of the American Medical Informatics Association (Nov 2008).
• Lustgarten, JL, Visweswaran, S, Grover, H, Kimmel, CP, Ryberg, H, Bowser, RP, Gopalakrishnan, V, Hogan, WR. Using a Novel Resource to Facilitate Proteomic Biomarker Identification. In: Proceedings of the Fall Symposium of the American Medical Informatics Association [poster abstract] (Nov 2008).
• Lustgarten, JL, Gopalakrishnan, V, Grover, H, Visweswaran, S. Improving Classification Performance with Discretization on Biomedical Datasets. In: Proceedings of the Fall Symposium of the American Medical Informatics Association (Nov 2008).
• Wong, I, Visweswaran, S. A Bayesian combinatorial partitioning method for analyzing gene-gene interactions. In: Proceedings of the Sixteenth International Conference on Intelligent Systems for Molecular Biology (ISMB-08) [poster abstract] (July 2008).
• Lustgarten, JL, Visweswaran, S, Grover, H, Gopalakrishnan, V. An evaluation of discretization methods for learning rules from biomedical datasets, In: Proceedings of the International Conference on Bioinformatics and Computational Biology (BIOCOMP-08) (July 2008)
• Grover, H, Lustgarten, JL, Visweswaran, S, Gopalakrishnan, V. Improving peptide identification via validation with intensity-based modeling of tandem mass spectra. In: Proceedings of the International Conference on Bioinformatics, Computational Biology, Genomics and Chemoinformatics (BCBGC-08) (July 2008).
• Hauskrecht M, Valko M, Kveton B, Visweswaran S, Cooper GF, Evidence-based anomaly detection in clinical domains. In: Proceedings of the Fall Symposium of the American Medical Informatics Association (Nov 2007). PMID: 18693850 [PubMed - in process]
• Mezger J, Visweswaran, S, Hauskrecht M, Clermont G, Cooper GF. Evidence-based anomaly detection in clinical domains. AMIA Annu Symp Proc. 2007 Oct 11:319-23.PMID: 18693850 [PubMed-in process]
• Visweswaran, S, Cooper, GF. Patient-Specific Models for Predicting the Outcomes of Patients with Community Acquired Pneumonia. In: Proceedings of the Fall Symposium of the American Medical Informatics Association (Oct 2005). (Received 3rd prize in the best student paper competition)
• Cooper, GF, Visweswaran, S, Deriving the Expected Utility of a Predictive Model When the Utilities are Uncertain. In: In: Proceedings of the Fall Symposium of the American Medical Informatics Association (Oct 2005). PMID: 16779022 [PubMed - indexed for MEDLINE]
• McEllistrem, MC, Adams, JM, Visweswaran, S, Khan S. Detection of Very-High-Level Penicillin Resistant Variants of the Tennessee 23F-4 Clone Via Single and Serial Transformations with Four Serotype 19A International Pneumococcal Clones. Microb Drug Resist. 2005 Fall;11(3). PMID: 16201931 [PubMed - indexed for MEDLINE]
• McEllistrem, MC, Adams, JM, Visweswaran, S, Khan S, Microarray Analysis of Pneumococcal Transformants Which Have Acquired Penicillin Resistance. In: 105th American Society of Microbiology, 5 June-9 June, 2005, Atlanta, GA. (June 2005).
• Visweswaran, S, Cooper, GF. Instance-Specific Bayesian Model Averaging for Classification. In: NIPS 2004. (Dec 2004).
• McEllistrem, MC, Adams, JM, Visweswaran, S, Wald, ER, Khan, S, In Vitro Horizontal Transfer of Three Penicillin Binding Proteins Between International Drug-Resistant Pneumococcal Clones. In: 104th American Society of Microbiology, 23 May-27 May, 2004, New Orleans, LA. (May 2004).
• McEllistrem, CM, Noller, AC, Visweswaran S, Adams JM, Harrison, LH. Serotype 14 variants of the France 9V-3 Clone from Baltimore, Maryland Can Be Differentiated by the cpsB Gene. J Clin Microbiol. 2004 Jan;42(1):250-6. (Jan 2004). PMID: 14715761 [PubMed - indexed for MEDLINE]
• Bartling, WC, Schleyer, TK, Visweswaran, S. Retrieval and classification of dental research articles. Adv Dent Res. 2003 Dec;17:115-20. (Dec 2003).PMID: 15126221 [PubMed - indexed for MEDLINE]
• Visweswaran, S, Hanbury, P, Saul, M, Cooper, GF. Detecting adverse drug events in discharge summaries using variations on the simple Bayes model. In: Proceedings of the Fall Symposium of the American Medical Informatics Association (Nov 2003). PMID: 14728261 [PubMed - indexed for MEDLINE]

Administrative Support

Yolanda DiBucci, yodi@pitt.edu

Graduate students

Ian Wong (ISP Doctoral student, Primary research advisor)
Jonathan Bickel (DBMI Masters student, Primary research advisor)
Jonathan Lustgarten (DBMI Doctoral student, Graduate committee member)
Himanshu Grover (DBMI Doctoral student, Graduate committee member)
Shuguang Wang (ISP Doctoral student, Graduate committee member)