P(λ)是隐马尔可夫模型中的先验概率是什么意思?

时间:2012-03-02 17:39:50

标签: hidden-markov-models markov

给出以下参数:

  • λ=(A,B,π)。
  • A =状态转换矩阵
  • A = {a [i] [j]} = {P(状态q [i]在t |状态q [j]在t + 1)},
  • B =观察矩阵和
  • π=初始分布。

下面的句子是正确的吗? (明确表示λ和A之间的关系):

a [i] [j] = P(状态q [i]在t |状态q [j]在t + 1)= P(状态q [i]在t |状态q [j]在t + 1,λ)

请帮忙!

1 个答案:

答案 0 :(得分:0)

P(state q[i] at t | state q[j] at t+1) =P(state q[i] at t | state q[j] at t+1, λ)

此表达式为

P(state q[i] at t | state q[j] at t+1) =P(state q[i] at t | state q[j] at t+1, λ) / P(λ)