Context knowledge modeling method for sharing and reusing context knowledge in context-aware system

• US 20070038438A1
• Filed: 05/23/2006
• Published: 02/15/2007
• Est. Priority Date: 11/08/2005
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Kim, Hyun, Jung, Jin, Kim, Hyoung, Lee, Joo, Hong, Chung, Cho, Joon
• Application Number:
  US11/438,855
• Publication Number:
  US 20070038438A1
• Time in Patent Office: Days
• US Class Current: 704/9
• CPC Class Codes: G06F 16/367 Ontology

Abstract

A context knowledge modeling method is provided. The context knowledge modeling method includes the steps of: a) defining a context knowledge space as a two-dimensional space based on an abstract level and an application domain of knowledge; b) locating a share ontology as a highest level of the abstract level for defining a common ontology concept at a plurality of applications and services performed in various environment and domains; c) locating at least one of domain ontologies as a lower abstract level than the share ontology by taking over the ontology concept defined at the share ontology and defining a class and an attribute specialized at a corresponding domain and a developing application; and d) locating one or more instance bases expressing knowledge about real objects to have a lower abstract level than the domain ontologies.

Claims

1. A context knowledge modeling method comprising the steps of:

a) defining a context knowledge space as a two-dimensional space based on an abstract level and an application domain of knowledge;

b) locating a share ontology as a highest level of the abstract level for defining a common ontology concept at a plurality of applications and services performed in various environment and domains;

c) locating at least one of domain ontologies as a lower abstract level than the share ontology by taking over the ontology concept defined at the share ontology and defining a class and an attribute specialized at a corresponding domain and a developing application; and

d) locating one or more instance bases expressing knowledge about real objects to have a lower abstract level than the domain ontologies.

2. The context knowledge modeling method of claim 1, wherein the ontology concept of the step b) is a class and an attribute, and the share ontology provides a highest level ontology knowledge to a context based application and service and guides the domain ontologies to define ontology concepts similar to an integrated level.

3. The context knowledge modeling method of claim 1, wherein the domain ontology of the step c) provides a domain ontology knowledge to a context based application and service and performs a role of a schema for a relation between a real object and objects in the instance bases.

4. The context knowledge modeling method of claim 1, wherein the instance bases in the step d) provide context information of a physical space to a context based application and service.

5. A context knowledge modeling method comprising the steps of:

a) defining a category class as a highest level class where the category class is permanent and not capable of providing an identification condition and transferring;

b) defining a type class as a lower level class than other type class or the category class where the type class is permanent and provides an identification condition;

c) defining a phased sortal class as a lower class of the type class where the phase sortal class is impermanent, undependable and is not capable or providing an new global identification condition; and

d) defining a material role class as a lower class of the type class or the phase sortal class where the material role class is impermanent and dependable any conditions.