Make the English-Japanese Word Dictionary

Translating only one way from English to Japanese will result in an unreliable the English-Japanese word dictionary. So, in order to increase reliability, we used both English-Japanese word pairs and Japanese-English word pairs to make the English-Japanese word dictionary.
The English-Japanese word dictionary was made as follows.

Step 1

Make English-Japanese word pairs and Japanese-English word pairs using GIZA++.

Step 2

Multiply the translation probabilities of the English-Japanese word pairs and the Japanese-English word pairs. Select the word pairs with probabilities higher than a threshold (α) and put them in the English-Japanese word dictionary.

Table III shows an example of the English-Japanese word dictionary and Table IV shows an example of the Japanese-English word dictionary.

表 III: Example of English-Japanese Word Dictionary

表 IV: Example of Japanese-English Word Dictionary