| Office:
231 Rush Building |
| Tel(O): (215)895-6360 |
| Tel(C): (215)840-6193 |
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Research Projects
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- Web-based Factoid Question Answering
- Entity (Concept) Categorization
- Semantic Profiling of Human Tags at Social Bookmarking Sites
- Biological Concepts and Relationships Extraction
- Document Classification with Small Training Datasets
- Context-sensitive Semantic Smoothing for Language Modeling
Approach to Ad-hoc Text Retrieval
- Information Visualization (VAST Competition)
- Word Sense Disambiguation (WSD) System Using Memory-based
Learning
Research Assistant, working with Professor
Hyoil Han at College of Information Science & Technology
(IST), Drexel University, Winter 2004-05
Implemented a Java-based WSD system using Memory-based Learning
(MBL) that incorporates a variety of lexical and world knowledge
such as syntactic relation, collocations, surrounding words,
POS, morphology, and selectional restrictions.
- A Semantics-based Information Retrieval
(IR) Model
Supervised by Professor
Xia Lin at IST, Drexel University, Winter 2004-05
Proposed a model for semantics-based IR that uses triplet (concept-relation-concept)
to index documents. A comparison with traditional keyword-based
IR model and a case study are followed.
- Information Extraction from
Semi-structured Patient Record
Collaborating with Professor
Hyoil Han at IST, Fall 2004-05
Proposed and implemented a system which uses three different
approaches to extraction of medical terms (e.g. past medical
history), numeric values (e.g. blood pressure), and categorical
values (e.g. smoking behavior) respectively.
- Automatic Acquisition of Linguistic
Patterns for Conceptual Modeling
Collaborating with Nan
Zhou and Prof.
Il-Yeol Song at IST, Fall 2004-05.
Surveyed the representation of and the learning methods for
linguistic patterns, and proposed the solution to automate the
acquisition of linguistic patterns for conceptual modeling.
The prototyped learning system is under development.
- Visualization
of UMLS Concepts
Research Assistant, working with Prof.
Xia Lin at IST, Summer 2003-04
Implemented a web-based interface that visualizes the relationship
of concepts in Unified Medical Language System (UMLS) using
concepts co-occurrence counts.
- Framework for Automated System Analysis
Collaborating with Nan
Zhou and Prof.
Il-Yeol Song at IST, Summer 2004
Suggested a framework that could automate the generation of
class diagram from functional specifications by using domain
ontology and linkage-based semantic analysis to identify concepts
and their inter-relationships, and linguistic patterns to label
those relationships.
- Conceptual Modeling of
Bioinformatics Data and Process Using UML
Supervised by Professor
Il-Yeol Song at IST, summer 2003-04
Used Unified Modeling Language (UML) to model various data types
for Pharmacogenetics and genetic studies, intuitively presenting
the tri-relationships among genotype, phenotype, and environment.
- Prediction of Sequence Alignment Algorithm by
A Hybrid Method
Research Assistant, working with Professor
Hyoil Han at IST, Drexel University, and Dr. Junwen Wang
at University of Pennsylvania, Fall 2003-04.
Tested the idea of combining neural network and genetic algorithm
to optimize the model that can predict the optimal sequence
alignment method given a specific sequence.
- Design of e-Currency and Trust
Authority for Electronic Barter Market
Master thesis, Advisor: Professor
Chongfeng Wu at Graduate School of Management, Shanghai
Jiao Tong University, China, 1999-2002
Presented a business model of virtual barter market that addressed
two core issues, the design of e-currency and the establishment
of trust authority. Moreover, computer-based simulation technique
was used to study the features of e-barter market.
- Steel-making Process Modeling
by Neural Network
Research Assistant, working with Dr. Bin Du at Research Institute
of BaoSteel Corp, Shanghai, China, 2000.
Used back-propagation neural network to model the complicated
steel-making process.
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