请将以下文字进行改写，以突出重点并使其表达更加精简。 instantaneous P can be seen as a distribution where all of the probability mass is located at the upper limit or lower limit of the range of values taken by the vector P. 即时P可以被视为一种分布在该分布中，概率质量全部集中在向量P取值范围的上限或下限。
user
即时P可视为一种概率分布，其中所有概率质量集中在向量P取值范围的上限或下限。
assistant