这个代码需要替换掉原来的 `Z = np.exp(-0.5*t)*composite_index + np.dot(weights, W)`,即在第 27 行处进行修改。将原来的代码:
```
Z = np.exp(-0.5*t)*composite_index + np.dot(weights, W)
```
改为:
```
weights = np.repeat(weights, len(composite_index) // len(weights))
weights = np.concatenate([weights, np.zeros(len(composite_index) % len(weights))])
Z = np.exp(-0.5*t)*composite_index + np.dot(weights, W)
```
这样就可以先将 `weights` 转换成和 `composite_index` 维度相同的数组,再进行计算。