Yes, you're right, sorry if that was unclear. I omitted the source LHS symbol because it's always X in hierarchical phrase-based models.
Phil On 10 Apr 2012, at 13:55, Bill_Lang(Gmail) wrote: > Hi Philip, > Thanks for your kindly and professional replying. I think your > answers are correct. But I have one point not totally clearly. > > For rule c: [X][S] </s> [X] ||| [X][S] </s> [S] ||| 1 ||| 0-0 ||| 0 > In the left side, does the first [X][S] mean the source side target must be > "X" and the target side target must be "S" at the same while? > > You explained rule c as: S -> X </s>, S </s> > Can it be fully explained as: X/S -> X </s>, S </s> > > I am a fresh guy for mose hierarchical model. Thanks for your answering in > patience. > > Best Regards, > Jun Lang > > On Tue, Apr 10, 2012 at 6:50 PM, Philip Williams <philip.willi...@me.com> > wrote: > Hi, > > the Moses rule table format pairs up source and target non-terminal symbols > for the rule right-hand-sides, so you should read the SCFGs in rule c and d > as being > > S -> X </s>, S </s> > > and > > S -> X X, S X > > (With monotone non-terminal correspondences, i.e. no reordering.) > > The next steps in your derivation are therefore: > > 3. rule d. X </s> > 4. rule c. X > > Phil > > > On 10 Apr 2012, at 08:39, Bill_Lang(Gmail) wrote: > > > Dear Moses community friends, > > For moses hierarchical decoding, I have a question about the auto > > generated gleu-rule file. I make this example as follows. > > ------------------------------------------------------------------------------ > > rule-table: > > aa [X] ||| bb [X] ||| 0.5 0.572507 0.000191388 1.44549e-05 2.718 ||| ||| 2 > > 5225 > > > > glue-rule: > > <s> [X] ||| <s> [S] ||| 1 ||| ||| 0 > > [X][S] </s> [X] ||| [X][S] </s> [S] ||| 1 ||| 0-0 ||| 0 > > [X][S] [X][X] [X] ||| [X][S] [X][X] [S] ||| 2.718 ||| 0-0 1-1 ||| 0 > > > > The numbers of above four rules can be: a b c d. > > a aa [X] ||| bb [X] ||| 0.5 0.572507 0.000191388 1.44549e-05 2.718 ||| > > ||| 2 5225 > > b <s> [X] ||| <s> [S] ||| 1 ||| ||| 0 > > c [X][S] </s> [X] ||| [X][S] </s> [S] ||| 1 ||| 0-0 ||| 0 > > d [X][S] [X][X] [X] ||| [X][S] [X][X] [S] ||| 2.718 ||| 0-0 1-1 ||| 0 > > > > When translating this input sentence by above rules: > > <s> aa </s> > > > > Moses-chart can get translation as: bb > > > > I suppose the translation steps to source side is > > 1. rule b. X aa </s> > > 2. rule a. X X </s> > > > > Here, I can not proceed further. Can anybody help me to understand how > > about the whole translation steps with above rules and input? > > > > Thanks in advance. > > > > Best Regards, > > Jun Lang > > _______________________________________________ > > Moses-support mailing list > > Moses-support@mit.edu > > http://mailman.mit.edu/mailman/listinfo/moses-support > > > _______________________________________________ > Moses-support mailing list > Moses-support@mit.edu > http://mailman.mit.edu/mailman/listinfo/moses-support _______________________________________________ Moses-support mailing list Moses-support@mit.edu http://mailman.mit.edu/mailman/listinfo/moses-support
