טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
M.Sc Thesis
M.Sc StudentChrizman Cherkassky Nitsan
SubjectHow to Construct Multilingual Domain Ontologies
DepartmentDepartment of Computer Science
Supervisor Professor Emeritus Alon Itai


Abstract

In information science, an ontology is a structural framework for organizing information, which represents knowledge as a set of concepts and the relationships between them.

Our research focuses on automatic construction of multi-lingual domain-ontologies, i.e., creating a DAG (directed acyclic graph) consisting of concepts related to a specific domain and the relations between them.

Our final result is a method which, given a domain, produces a multilingual ontology that represents the main concepts within the domain, along with their attributes and the relationships between those concepts. The methodology we developed includes developing, using a given domain and relying on a foundation ontology, a domain-ontology in a source language (the main language) and, based on that, developing a corresponding domain-ontology in a target languages (the secondary language).


We considered three tasks: First, Accumulating the domain's basic concepts-- Gathering a large set of ``relevant concepts", concepts which are closely related to the domain core. Second, developing the domain-ontology in the source language-- Finding the connections between the concepts, which were obtained in the first task. Finally, developing the corresponding domain-ontology in the target language-- Developing an ontology in the target language based on the ontology in the source language we had created in the previous tasks.