在几何布朗运动中加入了跳跃Jump！！！！！！！！

具有随机跳跃的GBM？？？？大神哥，能不能麻烦详细说为啥用二项分布呢，小弟初学。。。。导师留的任务，没人教啊

。。。。。。。。。。。。莫顿的加入跳跃的期权定价模型 有具体介绍

No, there is no jump here. It is just use a binomial distribution to generate biased random walk. Ordinary Weiner process is based on normal distribution which as we all know can be replicated with throwing a fair coin (0.5,0.5) for infinite times. Here, this code is just to generate a biased distribution with a biased coin (p,q). On each interval "inc" it throws nx=inc/dt which is 100 in this case. 100 trials binomial distribution is roughly enough to approximate a continuous distribution.

Best,

虽然还是不怎么懂，感谢大神！！自己好好研究学习！