简答题One of the characteristics of neural networks is that they cannot be easily implemented with very large scale integrated circuit or optical integrated circuit system, or with existing computer technologies.多选题The development of neural network has gone through four stages: enlightenment period, low tide period, revival period and connection mechanism period. （ ）简答题1、At present, there are many learning algorithms for neural networks, which can be divided into（ ） according to whether there is a tutor or not, A、Learning with a tutor B、Learning without a tutor C、 Self-learning D、 Reinforcement learning多选题Simple perceptron can only solve the problems of first-order predicate logic and linear classification, it cannot solve the problems of higher-order predicate and non-linear classification.（ ）