A Relationship: Word Alignment, Phrase Table, and Translation Quality

Algorithm 1

Phrase extraction based on the only one alignment point: 𝑒_𝑖↔𝑓_𝑗.

Start from 𝑒₁:

 𝑁_phrases=𝐼−𝑖+1;

Start from 𝑒₂:

 𝑁_phrases=𝐼−𝑖+1;

Similarly ∀𝑖∈(𝑖=𝑖,…,𝐼) in the target side:

 𝑁_phrases=𝐼−𝑖+1;