Archive for the Web Category

Korean fashion style following KPOP weave

Posted in Fashion, Web on December 18, 2011 by wsjoung

Recently KPOP is getting very popular, it called KPOP weave.  It seems like that many of Korean pop singers or groups already are on the top of music chart in Asian area including China, Japan and south eastern Asia.

This trends lead some of other fields like movies, TV dramas and fashion. Especially Korean clothing is getting more popular as Korean celebrities getting popular. Because people notice the style of Korean celebrities on TV show.

Korean fashion clothing is distinguished from others. First they are mostly for slim. sometimes it’s not make easy to find big size of clothing. Second fashion trends are changing very fast. Korea is a sort of small county, when a style is getting trends it doesn’t take that long to get spread out. The last is that they have very efficient manufacturing cycle. All these make difference on Korean fashion style.




What is an Ontology?

Posted in Web with tags , on November 17, 2006 by wsjoung

Ontology is the key terminology of semantic web. I just wanted to get more exact concept of this word.

Short answer:
An ontology is a specification of a conceptualization.

The word “ontology” seems to generate a lot of controversy in discussions about AI. It has a long history in philosophy, in which it refers to the subject of existence. It is also often confused with epistemology, which is about knowledge and knowing.

In the context of knowledge sharing, I use the term ontology to mean a specification of a conceptualization. That is, an ontology is a description (like a formal specification of a program) of the concepts and relationships that can exist for an agent or a community of agents. This definition is consistent with the usage of ontology as set-of-concept-definitions, but more general. And it is certainly a different sense of the word than its use in philosophy.

What is important is what an ontology is for. My colleagues and I have been designing ontologies for the purpose of enabling knowledge sharing and reuse. In that context, an ontology is a specification used for making ontological commitments. The formal definition of ontological commitment is given below. For pragmetic reasons, we choose to write an ontology as a set of definitions of formal vocabulary. Although this isn’t the only way to specify a conceptualization, it has some nice properties for knowledge sharing among AI software (e.g., semantics independent of reader and context). Practically, an ontological commitment is an agreement to use a vocabulary (i.e., ask queries and make assertions) in a way that is consistent (but not complete) with respect to the theory specified by an ontology. We build agents that commit to ontologies. We design ontologies so we can share knowledge with and among these agents.

Tom Gruber