French-English Patterns

We developed the following process for forming French-English patterns.

1. Parallel French-English Corpus

   We prepare French-English parallel sentences for training. Example sentences are listed in Table 1.

   
   

   表 1: Parallel French-English Corpus

   French sentence	Le feu tait au rouge.
   English sentence	The light was red.

   
   

2. French-English Phrase Table

   Using training-model.perl [4], we construct a French-English phrase table. An example French-English phrase table is shown in table 2.

   
   

   表 2: Example of French-English Phrase Table

   1	Le feu |||The light |||0.5 0.071 0.5 0.209
   2	Les lumire ne |||The lights |||0.0001 0.0006 0.003 0.004
   3	feu |||light |||0.2 0.01 0.2 0.2

   
   

3. French-English High Probability Phrase Table

   We deleted the low-probability French-English phrase table (Table 2), in which the threshold was below 0.1. We call the resulting table a French-English high-probability phrase table (HPPT). An example of an HPPT is shown in Table 3.

   
   

   表 3: Example of French-English High Probability Phrase Table

   1	Le feu |||The light |||0.5 0.071 0.5 0.209
   2	feu |||light |||0.2 0.01 0.2 0.2

   
   

4. French-English Patterns

   Using French-English parallel sentences (Table ) and the French-English high probability phrase table (Table 3), we formed French-English patterns. Note that all possible French-English patterns were generated. So, one or more French-English patterns were generated from one French-English parallel sentence. Example French-English patterns are listed in Table .

   
   

   表 4: French-English Patterns

   1	French pattern	X1 tait au rouge.
   	English pattern	X1 was red.
   2	French pattern	Le X1 tait au rouge.
   	English pattern	The X1 was red.

   
   

Figure 1 shows a flowchart for forming French-English patterns.

図 1: Forming French-English Patterns