Building a Terminological Database from Heterogeneous.ppt

Building a Terminological Database from Heterogeneous Definitional Sources
Smaranda Muresan, Peter T. Davis
Samuel D. Popper, Judith L. Klavans
Columbia University
May 21, 2003
Why Terminology is Important?
Each agency and each department might have different ways to define the same concept
Working with multiple databases requires understanding the data across multiple agencies and domains
What’s an Employee?
An appointed officer or employee of USDA including special Government employees (collaborators, consultants and panel members). The term excludes independent contractors.
An individual who is engaged pensated by a railroad or by a contractor to a railroad, who is authorized by a railroad to use its munications in connection with railroad operations.
A person who works for wages or salary in the service of an employer.
The term "employee" does not include a director, trustee, or officer.
US Department of Agriculture
Federal Railroad Administration
Mine Safety and Health Administration
US SEC
Desiderata for Terminological Resources
Capture the ongoing evolution of language
Provide consistency, ease of sharing and integration across agencies.
Architecture
Collection
SemanticAnalysis
Use
Heterogeneous Definitional Corpus
GetGloss
Definder
ParseGloss
Database Building
Terminological Database
dynamic sources
relations among concepts and their attributes
fast access, flexibility, sharing
database query
Building the terminological DB
Collection
Motivation
Definitions are rich in terminological knowledge
On-line dictionaries are static and generally plete
Need to capture the evolution of language
Acquisition of Heterogeneous Definitional Corpus
GetGloss
Definder
Solution
GetGloss – identification and extraction of glossaries
Definder - extraction of definitions from online free text
Building the Terminological DB
Motivation
Need to identify relationships among concepts
. synonyms, hypernyms, cross-reference
Need to sto