Delroy Cameron
Research Assistant: Knoesis Center
PhD Student: Wright State University
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Research Summary

A full research summary is available here

Research Projects

    1) PREDOSE: PREscription Drug abuse, Online-Surveillance and Epidemiology project
    People
    Delroy Cameron, Lu Chen, Raminta Daniulaityte, Robert Carlson, Russel Falck, Amit P. Sheth (Sujan Udayanga - Alumni)

    Project Page
    http://wiki.knoesis.org/index.php/PREDOSE
    http://www.med.wright.edu/citar/web-based-UGC

    Summary
    This research project aims to develop a mechanism to automate 'qualitative coding' in social research by automatically extracting triples from web data, particularly web forum posts. The goal of such triple extraction is to provide a framework that can be exploited to study user knowledge, attitudes and behaviors as it relates to non-medical use of pharmaceutical opiods (e.g. OxyContin, buprenorphine etc). Interesting areas include 1) Social Network analysis, intended to determine information diffusion patterns and 2) Spatial-Temporal-Thematic analysis, intended to determine trends within the community regarding usage, distribution, of method of administration of pharmaceutical opioids (including Suboxone and Subutex, which are buprenorphine products).

    Publications
    R. Daniulaityte, R. Carlson, R. Falck, D. Cameron, S. Udayanga, L. Chen, A. P. Sheth. A web-based study of self-treatment of opioid withdrawal symptoms with loperamide (submitted).

    2) Literature-Based Knowledge Discovery (LBD) using Semantic Predications
    People
    Delroy Cameron, Olivier Bodenreider, Thomas C. Rindflesch, Ramakanth Kavuluru. Pablo N. Mendes, Amit P. Sheth

    Project Page
    http://wiki.knoesis.org/index.php/Obvio

    Summary
    Knowledge discovery using assertions extracted from scientific literature (i.e., semantic predications) is often limited by combinatorial explosion of possible paths and lack of context among concepts. We propose the notion of knowledge abstraction to make logical leaps that bridge the gap between semantically interlinked predications, based on a rule-based extension of the notion of vertex reachability from graph theory. This framework, forms the basis for open knowledge discovery, limited only by the quality of extracted predica- tions and the rules for making logical leaps.

    Publications
    D. Cameron, R. Kavuluru, O. Bodenreider, P. N. Mendes, A. P. Sheth, K. Thirunarayan, Semantic Predications for Complex Information Needs in Biomedical Literature, 5th International Conference on Bioinformatics and Biomedicine BIBM2011, Atlanta GA, November 12-15, 2011
    3) Semantic Browser (Scooner/Trellis)
    People
    Ramakanth Kavuluru, Gary A. Smith, Paul Fultz II, Delroy Cameron, Pablo Mendes, Christopher Thomas, Wenbo Wang

    Project Page
    http://wiki.knoesis.org/index.php/Scooner

    Summary
    Scooner is a Semantic Browser that is a knowledge-driven, Text Exploration, Semantic Web application for knowledge discovery. It is based on the idea that humans performing search on a text corpus are in search of information, not so much documents. Hence, the browser is built on a data-centric view of information in corpora. It performs the following tasks: Document Indexing (using Lucene), Metadata Extraction (Named Entity & Relationship Identification), Spotting known entities in text, Annotating spotted entities, Supporting navigation of triples over a corpus (Semantic Browsing), Reranking and bookmarking results in the Workbench (Document Ranking), Saving and publishing search results.

    Publications
    D. Cameron, P. N. Mendes, A. P. Sheth, V. Chan, Semantics-Empowered Text Exploration for Knowledge Discovery, 48th ACM Southeast Conference, ACMSE2010, Oxford Mississippi, April 15-17, 2010 (PDF) (PPT)

    Demo
    An online demo of the Semantic Browser is available here.

    4) SEMEF: SEMantic Expert Finder (M.S. Thesis)
    People
    Delroy Cameron, Boanerges Aleman-Meza, I. Budak Arpinar, Sheron L. Decker

    Summary
    The expert finder project is aimed at finding experts to serve as program committee (PC) members for conferences, by estimating their expertise based on publication record and inexact expertise found through extrapolation, using a taxonomy of topics and subtopics across some domain.

    Publications
    D. Cameron, B. Aleman-Meza, I. B. Arpinar, S. L. Decker, A. P. Sheth, A Taxonomy-based Model for Expertise Extrapolation, 4th International Conference on Semantic Computing ICSC2010, Pittsburgh PA, September 22-24, 2010 (PDF) (PPT)

    B. Aleman-Meza, S. L. Decker, D. Cameron, I. B. Arpinar, Association Analytics for Network Connectivity in a Bibliographic and Expertise Dataset, Book Chapter in Semantic Web Engineering in the Knowledge Society, 2008 (PDF)

    D. Cameron, B. Aleman-Meza, I. B. Arpinar, Collecting Expertise of Researchers for Finding Relevant Experts in a Peer-Review Setting, 1st International ExpertFinder Workshop EFW 2007, (Co-located with 7th Knowledge Web General Assembly) Berlin Germany, January 16, 2007 (PDF) (PDF)

    Demo
    An online demo of the Semantic Expert Finder is available here.