Tuesday, June 14, 2005
Automatically building semantic taxonomies
The Search Guy: "The Search Guy: Automatically building semantic taxonomies
One of the capabilities that our research search engine has (that is to say, this capability doesn't ship with Sun's products) is the ability to build a semantic taxonomy from all of the words in the indexed material. The taxonomy is built on a relationship of generality, where more general terms are said to subsume more specific terms. For example, the word canine is more general that the word dog.
We currently build such a taxonomy using two kinds of information. The first is a set of lexical axioms. These are simply facts that you need to know about the world. For example, the fact that a dog is a kind of canine is something that you simply need to know about the world. You can't deduce this relationship by simply looking at the words themselves. "
One of the capabilities that our research search engine has (that is to say, this capability doesn't ship with Sun's products) is the ability to build a semantic taxonomy from all of the words in the indexed material. The taxonomy is built on a relationship of generality, where more general terms are said to subsume more specific terms. For example, the word canine is more general that the word dog.
We currently build such a taxonomy using two kinds of information. The first is a set of lexical axioms. These are simply facts that you need to know about the world. For example, the fact that a dog is a kind of canine is something that you simply need to know about the world. You can't deduce this relationship by simply looking at the words themselves. "
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