12. A method for automatically generating grammar for use in the processing of natural language, the method comprising: setting one domain as a target domain to be processed by an intention analysis system using a setting processor; extracting a corpus relevant to the target domain from a collection of corpora using an extractor, dividing the corpus into sentences and tagging the sentences; classifying the extracted corpus into a domain action among one or more domain actions that correspond to the target domain; converting one or more words included in the extracted corpus into classes; and generating a grammar based on the converted classes of the extracted corpus using a generator wherein one or more ungrammatical words or sentences are removed from the corpus.
12. A method for automatically generating grammar for use in the processing of natural language, the method comprising: setting one domain as a target domain to be processed by an intention analysis system using a setting processor; extracting a corpus relevant to the target domain from a collection of corpora using an extractor, dividing the corpus into sentences and tagging the sentences; classifying the extracted corpus into a domain action among one or more domain actions that correspond to the target domain; converting one or more words included in the extracted corpus into classes; and generating a grammar based on the converted classes of the extracted corpus using a generator wherein one or more ungrammatical words or sentences are removed from the corpus. 18. The method of claim 12 , wherein extracting the corpus comprises using vectors to represent the collection of corpora and a reference corpora, and extracting the corpus relevant to the target domain based on a comparison of the vectors.