Key points in PM (2) a Customizing decoding algorithm according to new lexicon Improved time-synchronous search algorithm to reduce the path expansion(caused by CD modeling) a based algorithm based tree-trellis search algorithm to score multiple pronunciation variations simul taneously in the path a Modifying statistical language model W=arg max P(X W)P(W) W= arg max P(XIn)P() W W=Baseform() w=argmax P(X)(W)P(W) W=Baseform(l Center of speech Technology, Tsinghua University Slide 8Center of Speech Technology, Tsinghua University Slide 8 Key Points in PM (2) ❑ Customizing decoding algorithm according to new lexicon ❖ Improved time-synchronous search algorithm to reduce the path expansion (caused by CD modeling) ❖ A* based algorithm based tree-trellis search algorithm to score multiple pronunciation variations simultaneously in the path ❑ Modifying statistical language model ˆ arg max ( | ) ( ) W W P X W P W = ( ) ˆ argmax ( | ) ( ) W Baseform V W P X V P V = = ( ) ˆ argmax ( | ) ( | ) ( ) W Baseform V W P X V P V W P W = =