Abstract: The present disclosure relates to a system and method of generating a sentence similar to a basis sentence for machine learning. For the same, the similar sentence generating method includes: generating a first similar sentence by using a word similar to a word included in a basis sentence; generating a second similar sentence of the basis sentence or the first similar sentence based on a speaker feature; and determining whether or not the first similar sentence and the second similar sentence are valid.

Abstract: The present disclosure relates to an apparatus and method of allocating a question according to a question type or question feature. A question allocating apparatus for the same may include a question analysis unit generating at least one of question type information and question feature information of a current question; and a question allocating unit determining an answer generating unit suitable for the current questions among a plurality of answer generating units based on at least one of the question type information, and the question feature information, and allocating the current question to at least one answer generating including the determined answer generating unit.

Abstract: The present disclosure relates to a system and method of sentence learning based on an unsupervised learning method. For the same, a sentence learning method may include: enhancing a basis sentence corpus by using a word similar to a word included in a basis sentence; performing learning for the basis sentence included in the basis sentence corpus based on an unsupervised learning method; and removing an abnormal sentence among at least one similar sentence obtained by performing of the sentence learning.