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def init_inference_model(self, train_model):

    self.train_model = train_model
    self.topics_num = train_model.topics_num
    self.K = train_model.K
    self.alpha = train_model.alpha
    self.beta = train_model.beta
    self.sum_alpha_beta()
    self.global_bi = train_model.local_bi
    return
