Graphical Ontology Editor for Multilingual Search System

Cesar R. K. StradiottoTania C. D. Bueno

Hugo C. Hoeschl

THE ONTOJURIS PROJECT

A multilingual information system for legal

information retrieval. Has a module called

Knowledge Engineering Suite (KES), which

has an ontology editor.

The system accepts queries in one language,

and allows document retrieval of many

documents written in several languages.

THE ONTOJURIS PROJECT

The editor works with UWs inside the

UNL project

Proposition of a new expansion

method for indexing documents,

based on a combination of ontology

networks and Universal Words

THE ONTOJURIS PROJECT

Has information on legislation in the area of

Intellectual Property Law, Consumer Rights

and Electronic Law

For the process of multilingual ontology

construction, it uses legal terms available in

databases to help the

It is made by a consortium formed by Brazil,

Chile, Spain and Argentina, since 2007

MODULES

SEARCH MODULE: Realize the information retrieval

of laws in web. It offers three ways for user to

request searching: similarity, domain choosing, and

simple textual search

MODULES: SEARCH SCREEN

MODULES

MULTILINGUAL EDITOR: Based on Mind Engineering

Methodology for Ontology Construction: Instances of

representation do not include description between

objects, but only relations between them, within

chained domains

MODULES: CHOOSING THE DOMAIN

MODULES: SOME ONTO NETWORK SAMPLE

MODULES: PRE-PROCESSING

BASIC STRUCTURE FOR DOCUMENT INDEXING:

Two main structures:

An alphabetically ordered list of key-words

An alphabetically ordered list of terms

MODULES: PRE-PROCESSING

INDEXING KB DOCUMENTS:

For each document inside the base

1 – Removing irrelevant words (Stop Words)

2 – Stemming to Eliminate desinences (gender, plural)

MODULES: PRE-PROCESSING

3 – Removing special and isolated characters

4 – Testing if there are Terms (composed by words) inside the text, to generate the term vector

5 – Represent a document as a vector of index of terms and key words

SAMPLE OF AN EXPANSION

QUERY EXPANSION:

AMBIGUITY PROBLEM

UW TO SOLVE AMBIGUITY

WHAT IS NEXT?

We have the visual editor, but didn’t tried some experimental results with terms and UW’s: We have, for this moment, the ideal model (the easier one to understand)

What is the role of domains, on this model?

What happens when we have the same two terms on each of two compared languages, connected by its corresponding UW’s, but with a different relation between them (asymetric connected ontologies)?

SAMPLE FOR ASYMETRIC ONTOLOGIES

Thank You for Your Support, Patience and Tolerance!

http://www.i3g.org.br