³ò ŽB_Kc@s¯dZddklZddklZddkZdefd„ƒYZd„Zd„Z e d „Z d „Z d „Z d „Zd ZdZdZedjo e ƒndS(sÆ Tools for reading and writing dependency trees. The input is assumed to be in U{Malt-TAB} format. Currently only reads the first tree in a file. iÿÿÿÿ(tTree(tpformatNtDependencyGraphcBsïeZdZed„Zd„Zd„Zd„Zd„Zd„Z d„Z d„Z d „Z e d „ƒZe d „ƒZd „Zd „Zd„Zd„Zed„Zd„Zd„Zd„Zd„Zd„Zd„Zd„ZRS(sQ A container for the nodes and labelled edges of a dependency structure. cCsmhdd<gd<dd<dd<dd<}|g|_d|_d|_|o|i|ƒndS( s We place a dummy 'top' node in the first position in the nodelist, since the root node is often assigned '0' as its head. This also means that the indexing of the nodelist corresponds directly to the Malt-TAB format, which starts at 1. twordtdepstTOPtrelttagitaddressN(tNonetnodelisttroottstreamt_parse(tselfttree_strttop((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pyt__init__s 3   cCsht|iƒd}xN|djo@|i|}|d|jo|ii|ƒn|d8}qWdS(sx Removes the node with the given address. References to this node in others will still exist. iiRN(tlenR tpop(RRt node_indextnode((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pytremove_by_address,s  cCshxa|iD]V}g}x=|dD]1}||jo|i|ƒq!|i|ƒq!W||d(RR (R((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pyt__repr__qscCstt|ƒiƒƒS(s8 @param file: a file in Malt-TAB format (Rtopentread(tfile((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pytloadtscCs(tidƒ}ti|d|ƒiƒS(sL Deal with lines in which spaces are used rather than tabs. s +s (tretcompiletsubtstrip(tlinetSPC((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pyt _normalize{scs<|i|d}|i|d‰t‡fd†|DƒƒS(sl Returns the number of left children under the node specified by the given address. RRc3s*x#|]}|ˆjo dVqqWdS(iN((t.0tc(tindex(s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pys Šs(R tsum(RRtchildren((R7s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pyt left_childrenƒscs<|i|d}|i|d‰t‡fd†|DƒƒS(sm Returns the number of right children under the node specified by the given address. RRc3s*x#|]}|ˆjo dVqqWdS(iN((R5R6(R7(s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pys “s(R R8(RRR9((R7s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pytright_childrenŒscCs,|i|dƒp|ii|ƒndS(NR(R'R R(RR((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pytadd_node•scCs-g}|idƒD]'}|iƒo|ti|ƒqq~}g}x·t|ƒD]©\}}y†|idƒ}t|ƒ}|djo|\} } } d} ni|djo|\} } } } nF|djo(|\ } } } } } } } } } } ntd|ƒ‚t| ƒ} |ii h|dd <| d <| d <| d <| d <g}|D](\}}||djo ||qdqd~d<ƒy |i| di |dƒWn*t j o|i |d| fƒnXWqWtj oPqWXqWW|iddd}|i||_ dS(Ns s itii sTNumber of tab-delimited fields (%d) not supported by CoNLL(10) or Malt-Tab(4) formatiRRRtheadRRi( tsplitR1RR4t enumerateRt ValueErrortintR Rt IndexErrorR (Rtinputt_[1]R2tlinesttempR7tcellstnrCellsRRR>Rt_t_[2]tdtht root_address((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pyR ™s6D      ( ,B   cCs.|d}|o|djo|Sq*n|S(NRt,((RRtfiltertw((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pyt_word»s cCsq|i|}|d}|d}t|ƒdjo|Sn2t|g}|D]}||i|ƒqM~ƒSdS(sû Recursive function for turning dependency graphs into NLTK trees. @type i: C{int} @param i: index of a node in C{nodelist} @return: either a word (if the indexed node is a leaf) or a L{Tree}. RRiN(R RRt_tree(RtiRRRREtj((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pyRSÁs   cCsN|i}|d}|d}t|g}|D]}||i|ƒq.~ƒS(s• Starting with the C{root} node, build a dependency tree using the NLTK L{Tree} constructor. Dependency labels are omitted. RR(R RRS(RRRRRERT((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pyttreeÕs   cCs1y|i|dSWntj o dSnXdS(NR>(R RCR (RRT((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pyt_hdßscCs1y|i|dSWntj o dSnXdS(NR(R RCR (RRT((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pyt_relåsc CsRh}xF|iD];}x2|dD]&}t|d|gƒ}d||Ris %s %s %s is %s %s %s %s i s%s %s _ %s %s _ %s %s _ _ sTNumber of tab-delimited fields (%d) not supported by CoNLL(10) or Malt-Tab(4) formatR=(R@R RRAtjoin( RtstyleRFRTRRRR>R((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pytto_conlls  .  ! +(t__name__t __module__t__doc__R RRRRR"R$R'R(R)t staticmethodR-R4R:R;R<R R%RRRSRVRWRXReR[Rk(((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pyRs0      "      cCsÄtdt|iƒƒ}g}|D]<}|i|ƒo&|||i|ƒ|i|ƒfq#q#~}h|_x&|D]}|i|d|i|s&        cCs:ttƒ}|iƒ}|iƒGH|GH|idƒGHdS(sh A demonstration of how to read a string representation of a CoNLL format dependency tree. iN(Rt conll_data1RVR€Rk(RRV((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pyRzks    cCspdGHg}tidƒD]}|o|t|ƒqq~}x)|D]!}|iƒ}d|iƒGHqGWdS(NsMass conll_read demo...s s (t conll_data2R?RRVR€(REtentrytgraphstgraphRV((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pyR{vs4 cCs1ttƒ}|iƒGHtƒ}hdd<dgd<dd<dd<}hdd<dgd<d d<dd<}hdd<d gd<d d<dd<}hdd<dgd<d d<d d<}hdd<d gd<d d<d d<}|||||g|_||_|iƒGHdS( NRiRRRiRitNTOPii(Rt treebank_dataReR R R (Rt cyclic_dgRtchild1tchild2tchild3tchild4((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pyR|~s   ----- sPierre NNP 2 NMOD Vinken NNP 8 SUB , , 2 P 61 CD 5 NMOD years NNS 6 AMOD old JJ 2 NMOD , , 2 P will MD 0 ROOT join VB 8 VC the DT 11 NMOD board NN 9 OBJ as IN 9 VMOD a DT 15 NMOD nonexecutive JJ 15 NMOD director NN 12 PMOD Nov. NNP 9 VMOD 29 CD 16 NMOD . . 9 VMOD s/ 1 Ze ze Pron Pron per|3|evofmv|nom 2 su _ _ 2 had heb V V trans|ovt|1of2of3|ev 0 ROOT _ _ 3 met met Prep Prep voor 8 mod _ _ 4 haar haar Pron Pron bez|3|ev|neut|attr 5 det _ _ 5 moeder moeder N N soort|ev|neut 3 obj1 _ _ 6 kunnen kan V V hulp|ott|1of2of3|mv 2 vc _ _ 7 gaan ga V V hulp|inf 6 vc _ _ 8 winkelen winkel V V intrans|inf 11 cnj _ _ 9 , , Punc Punc komma 8 punct _ _ 10 zwemmen zwem V V intrans|inf 11 cnj _ _ 11 of of Conj Conj neven 7 vc _ _ 12 terrassen terras N N soort|mv|neut 11 cnj _ _ 13 . . Punc Punc punt 12 punct _ _ s1 Cathy Cathy N N eigen|ev|neut 2 su _ _ 2 zag zie V V trans|ovt|1of2of3|ev 0 ROOT _ _ 3 hen hen Pron Pron per|3|mv|datofacc 2 obj1 _ _ 4 wild wild Adj Adj attr|stell|onverv 5 mod _ _ 5 zwaaien zwaai N N soort|mv|neut 2 vc _ _ 6 . . Punc Punc punt 5 punct _ _ 1 Ze ze Pron Pron per|3|evofmv|nom 2 su _ _ 2 had heb V V trans|ovt|1of2of3|ev 0 ROOT _ _ 3 met met Prep Prep voor 8 mod _ _ 4 haar haar Pron Pron bez|3|ev|neut|attr 5 det _ _ 5 moeder moeder N N soort|ev|neut 3 obj1 _ _ 6 kunnen kan V V hulp|ott|1of2of3|mv 2 vc _ _ 7 gaan ga V V hulp|inf 6 vc _ _ 8 winkelen winkel V V intrans|inf 11 cnj _ _ 9 , , Punc Punc komma 8 punct _ _ 10 zwemmen zwem V V intrans|inf 11 cnj _ _ 11 of of Conj Conj neven 7 vc _ _ 12 terrassen terras N N soort|mv|neut 11 cnj _ _ 13 . . Punc Punc punt 12 punct _ _ 1 Dat dat Pron Pron aanw|neut|attr 2 det _ _ 2 werkwoord werkwoord N N soort|ev|neut 6 obj1 _ _ 3 had heb V V hulp|ovt|1of2of3|ev 0 ROOT _ _ 4 ze ze Pron Pron per|3|evofmv|nom 6 su _ _ 5 zelf zelf Pron Pron aanw|neut|attr|wzelf 3 predm _ _ 6 uitgevonden vind V V trans|verldw|onverv 3 vc _ _ 7 . . Punc Punc punt 6 punct _ _ 1 Het het Pron Pron onbep|neut|zelfst 2 su _ _ 2 hoorde hoor V V trans|ovt|1of2of3|ev 0 ROOT _ _ 3 bij bij Prep Prep voor 2 ld _ _ 4 de de Art Art bep|zijdofmv|neut 6 det _ _ 5 warme warm Adj Adj attr|stell|vervneut 6 mod _ _ 6 zomerdag zomerdag N N soort|ev|neut 3 obj1 _ _ 7 die die Pron Pron betr|neut|zelfst 6 mod _ _ 8 ze ze Pron Pron per|3|evofmv|nom 12 su _ _ 9 ginds ginds Adv Adv gew|aanw 12 mod _ _ 10 achter achter Adv Adv gew|geenfunc|stell|onverv 12 svp _ _ 11 had heb V V hulp|ovt|1of2of3|ev 7 body _ _ 12 gelaten laat V V trans|verldw|onverv 11 vc _ _ 13 . . Punc Punc punt 12 punct _ _ 1 Ze ze Pron Pron per|3|evofmv|nom 2 su _ _ 2 hadden heb V V trans|ovt|1of2of3|mv 0 ROOT _ _ 3 languit languit Adv Adv gew|geenfunc|stell|onverv 11 mod _ _ 4 naast naast Prep Prep voor 11 mod _ _ 5 elkaar elkaar Pron Pron rec|neut 4 obj1 _ _ 6 op op Prep Prep voor 11 ld _ _ 7 de de Art Art bep|zijdofmv|neut 8 det _ _ 8 strandstoelen strandstoel N N soort|mv|neut 6 obj1 _ _ 9 kunnen kan V V hulp|inf 2 vc _ _ 10 gaan ga V V hulp|inf 9 vc _ _ 11 liggen lig V V intrans|inf 10 vc _ _ 12 . . Punc Punc punt 11 punct _ _ 1 Zij zij Pron Pron per|3|evofmv|nom 2 su _ _ 2 zou zal V V hulp|ovt|1of2of3|ev 7 cnj _ _ 3 mams mams N N soort|ev|neut 4 det _ _ 4 rug rug N N soort|ev|neut 5 obj1 _ _ 5 ingewreven wrijf V V trans|verldw|onverv 6 vc _ _ 6 hebben heb V V hulp|inf 2 vc _ _ 7 en en Conj Conj neven 0 ROOT _ _ 8 mam mam V V trans|ovt|1of2of3|ev 7 cnj _ _ 9 de de Art Art bep|zijdofmv|neut 10 det _ _ 10 hare hare Pron Pron bez|3|ev|neut|attr 8 obj1 _ _ 11 . . Punc Punc punt 10 punct _ _ 1 Of of Conj Conj onder|metfin 0 ROOT _ _ 2 ze ze Pron Pron per|3|evofmv|nom 3 su _ _ 3 had heb V V hulp|ovt|1of2of3|ev 0 ROOT _ _ 4 gewoon gewoon Adj Adj adv|stell|onverv 10 mod _ _ 5 met met Prep Prep voor 10 mod _ _ 6 haar haar Pron Pron bez|3|ev|neut|attr 7 det _ _ 7 vriendinnen vriendin N N soort|mv|neut 5 obj1 _ _ 8 rond rond Adv Adv deelv 10 svp _ _ 9 kunnen kan V V hulp|inf 3 vc _ _ 10 slenteren slenter V V intrans|inf 9 vc _ _ 11 in in Prep Prep voor 10 mod _ _ 12 de de Art Art bep|zijdofmv|neut 13 det _ _ 13 buurt buurt N N soort|ev|neut 11 obj1 _ _ 14 van van Prep Prep voor 13 mod _ _ 15 Trafalgar_Square Trafalgar_Square MWU N_N eigen|ev|neut_eigen|ev|neut 14 obj1 _ _ 16 . . Punc Punc punt 15 punct _ _ t__main__(Rnt nltk.treeRR€RR.tobjectRRxR}R&RyRzR{R|R–RR‘Rl(((s0/p/zhu/06/nlp/nltk/nltk/parse/dependencygraph.pyss  ÿ   -  V