However, the original integrated Model-III does not distinguish the newly added TM phrase-pairs from those original SMT phrasepairs in ( | ).
we introduce two new features Source Phrase Origin (SPO) and Target Phrase Origin (TPO), which are a member of {Original, Newly-Added}, to the original Model-III in  to favor the newly added TM phrase-pairs, and re-derive ( | ) as follows (assume that TPO is only dependent on SPO, NLN and ): The additional factor ( | ) in the above equation is added to handle those newly added TM phrase-pairs.