the trace file normally only shows the target side of the rule since the source isn't usually required once the rule has been found.
To see source side in the trace file, add an extra feature function to your ini file [feature] SetSourcePhrase num-features=0 Then each line in the trace file will contain sourcePhrase=... About the tree-to-string model in Moses - it takes a tree as input, but the resulting derivation doesn't need to be a valid tree. It uses the syntax labels only as a constraint on whether rules can be applied On 7 May 2014 10:29, joerg <[email protected]> wrote: > > I started to run some experiments with tree-to-string models and I would > like to look closer at the derivations of the best hypothesis. Could > someone explain me how to understand the trace-information and also how to > get output that looks more like the ones shown at > http://www.statmt.org/moses/?n=Moses.SyntaxTutorial#ntoc5 > > I have input like this: > > <tree label="ROOT"> <tree label="NOUN"> Resumption </tree> <tree > label="adpmod"> <tree label="ADP"> of </tree> <tree label="adpobj"> <tree > label="det"> <tree label="DET"> the </tree> </tree> <tree label="NOUN"> > session </tree> </tree> </tree> </tree> > > and rule-tables that contain rules like the following: > Resumption [NOUN] ||| reprise [X] ||| 0.103716 0.25 0.656868 1 ||| 0-0 ||| > 19 3 3 ||| > Resumption [adpmod][X] [ROOT] ||| reprise [adpmod][X] [X] ||| 0.110561 > 0.25 0.110561 1 ||| 0-0 1-1 ||| 0.999999 0.999999 0.999999 ||| > Resumption of [adpobj][X] [ROOT] ||| reprise de [adpobj][X] [X] ||| > 0.110561 0.0699863 0.110561 0.391762 ||| 0-0 1-1 2-2 ||| 0.999999 0.999999 > 0.999999 ||| > Resumption of the session [ROOT] ||| reprise de la session [X] ||| > 0.110561 0.00885433 0.110561 0.101433 ||| 0-0 1-1 2-2 3-3 ||| 0.999999 > 0.999999 0.999999 ||| > > > My trace is then as follows: > > Trans Opt 0 [0..5]: [5..5]=</s> [0..4]=S : S ->S -> S </s> :0-0 : > c=-1.35101 core=(0,-1,1,0,0,0,0,0,0) > 4.10236core=(0,-6,10,-3.538,-4.72685,-2.88132,-2.28836,3.99959,-10.4206) > Trans Opt 0 [0..4]: [4..4]=X [0..3]=S : S ->S -> S X :0-0 1-1 : > c=1.1999 core=(0,-0,1,0,0,0,0,0.999896,0) > 2.96706core=(0,-5,9,-3.538,-4.72685,-2.88132,-2.28836,3.99959,-10.2912) > Trans Opt 0 [0..3]: [3..3]=X [0..2]=S : S ->S -> S X :0-0 1-1 : > c=1.1999 core=(0,-0,1,0,0,0,0,0.999896,0) > 1.05327core=(0,-4,7,-3.15851,-3.34055,-2.40175,-2.28836,2.99969,-10.2172) > Trans Opt 0 [0..2]: [2..2]=X [0..1]=S : S ->S -> S X :0-0 1-1 : > c=1.1999 core=(0,-0,1,0,0,0,0,0.999896,0) > -0.608594core=(0,-3,5,-2.93781,-2.65946,-1.07876,-0.937101,1.99979,-10.1715) > Trans Opt 0 [0..1]: [1..1]=X [0..0]=S : S ->S -> S X :0-0 1-1 : > c=1.1999 core=(0,-0,1,0,0,0,0,0.999896,0) > -2.0778core=(0,-2,3,-2.2661,-1.38629,-0.420272,0,0.999896,-9.72632) > Trans Opt 0 [0..0]: [0..0]=<s> : S ->S -> <s> :: c=1.2 > core=(0,-1,1,0,0,0,0,0,0) 1.2core=(0,-1,1,0,0,0,0,0,0) > Trans Opt 0 [1..1]: [1..1]=Resumption : X ->X -> reprise :: c=-4.73173 > core=(0,-1,1,-2.2661,-1.38629,-0.420272,0,0,0) > -4.73173core=(0,-1,1,-2.2661,-1.38629,-0.420272,0,0,-10.2344) > Trans Opt 0 [2..2]: [2..2]=of : X ->X -> de :: c=-1.83086 > core=(0,-1,1,-0.671711,-1.27316,-0.658493,-0.937101,0,0) > -1.83086core=(0,-1,1,-0.671711,-1.27316,-0.658493,-0.937101,0,-4.64553) > Trans Opt 0 [3..3]: [3..3]=the : X ->X -> la :: c=-2.38389 > core=(0,-1,1,-0.2207,-0.681098,-1.32298,-1.35126,0,0) > -2.38389core=(0,-1,1,-0.2207,-0.681098,-1.32298,-1.35126,0,-5.73737) > Trans Opt 0 [4..4]: [4..4]=session : X ->X -> session :: c=-4.76921 > core=(0,-1,1,-0.379489,-1.38629,-0.479572,0,0,0) > -4.76921core=(0,-1,1,-0.379489,-1.38629,-0.479572,0,0,-11.0403) > > > I expected to see rule applications that include NTs like ROOT, NOUN, > adpmod etc. but I don't see any. Do I have to add other flags to get this > kind of information? > > Thanks in advance! > Best, > Jörg > > > ********************************************************************************** > Jörg Tiedemann > http://stp.lingfil.uu.se/~joerg/ > > > > > _______________________________________________ > Moses-support mailing list > [email protected] > http://mailman.mit.edu/mailman/listinfo/moses-support > > -- Hieu Hoang Research Associate University of Edinburgh http://www.hoang.co.uk/hieu -- Hieu Hoang Research Associate University of Edinburgh http://www.hoang.co.uk/hieu
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