The present invention relates to the annotation systems of automation, for generating an ontology sentence method, sentence is according to the present invention when automatic annotation system starts to decompose storage unit for ontological creation, it stores input sentence by sentence and decomposes the corpus with annotation to appropriate units, it was found that one piece of similar meaning, sentence fragment is broken from decomposing storage unit in structure simultaneously, with reference to including an annotation to annotate the content that the band of one piece of input sentence annotates. ;Furthermore, the similitude of annotation method according to the present invention based on sentence has a first order, it decomposes a sentence in a comparable unit, one second process, it measures the structural similarity between sentence fragment, mean that variable third process measurement how semantic similarity seen whether between sentence fragment one go out it is similar, on the basis of syntactic transfer include execute annotation one the 4th step.
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