几何布朗运动 (GBM)(也叫做指数布朗运动)是连续时间情况下的随机过程,其中随机变量的对数遵循布朗运动。几何布朗运动在金融数学中有所应用,用来在布莱克-舒尔兹模型(Black-Sholes 模型)中模拟股票价格。
如果风险资产的价格服从几何布朗运动,那么资产市场具有两基金分离现象。
If the price of the risky asset follows the geometric Brownian motion, the asset market exhibits the separation of two funds.
然而在具体应用中,大部分学者直接将标的资产的价格设为几何布朗运动,并未进行深入研究。
Most researchers directly take an assumption that underlying assets price moving mode is Geometric Brownian Motion, don't ever deeply consider whether it is proper.
通过引入用于预测普通商品价格的较成熟的几何布朗运动模型建立了燃煤市场的煤价波动模型。
By means of introducing ripe geometrical Brown movement model for common commodity price forecasting a coal price fluctuation model of coal market is established.
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