+ hT*^RIt^RIHt!RR4t!RR]4tRtRtR t]!R R R .4t !R R4t R#)N) namedtupleca]tRt^toRtRRlt]R4t]R4tRt Rt ]!] ] 4t Rt R t R tR tR tR tVtR#) AlignedSenta Return an aligned sentence object, which encapsulates two sentences along with an ``Alignment`` between them. Typically used in machine translation to represent a sentence and its translation. >>> from nltk.translate import AlignedSent, Alignment >>> algnsent = AlignedSent(['klein', 'ist', 'das', 'Haus'], ... ['the', 'house', 'is', 'small'], Alignment.fromstring('0-3 1-2 2-0 3-1')) >>> algnsent.words ['klein', 'ist', 'das', 'Haus'] >>> algnsent.mots ['the', 'house', 'is', 'small'] >>> algnsent.alignment Alignment([(0, 3), (1, 2), (2, 0), (3, 1)]) >>> from nltk.corpus import comtrans >>> print(comtrans.aligned_sents()[54]) 'So why should EU arm...'> >>> print(comtrans.aligned_sents()[54].alignment) 0-0 0-1 1-0 2-2 3-4 3-5 4-7 5-8 6-3 7-9 8-9 9-10 9-11 10-12 11-6 12-6 13-13 :param words: Words in the target language sentence :type words: list(str) :param mots: Words in the source language sentence :type mots: list(str) :param alignment: Word-level alignments between ``words`` and ``mots``. Each alignment is represented as a 2-tuple (words_index, mots_index). :type alignment: Alignment NcWnW nVf\.4VnR#\ V4\JgQhW0nR#N)_words_mots Alignment alignmenttype)selfwordsmotsr s&&&&4/usr/lib/python3/dist-packages/nltk/translate/api.py__init__AlignedSent.__init__/s4   &r]DN ?i/ //&NcVP#r)rr s&rrAlignedSent.words8s {{rcVP#r)r rs&rrAlignedSent.mots<s zzrcVP#r) _alignmentrs&r_get_alignmentAlignedSent._get_alignment@s rcx\\VP4\VP4V4WnR#r)_check_alignmentlenrrr)r r s&&r_set_alignmentAlignedSent._set_alignmentCs#TZZ#dii.)D#rc RRPRVP44,pRRPRVP44,pRV RV RVP: R2#)zG Return a string representation for this ``AlignedSent``. :rtype: str z[%s]z, c34"TFpRV,xK R#5iz'%s'N.0ws& r 'AlignedSent.__repr__..Os#D 1FQJJ c34"TFpRV,xK R#5ir$r%r&s& rr)r*Ps"Bz!6A::zr+z AlignedSent())joinrr r)r rrs& r__repr__AlignedSent.__repr__Is^ $))#D #DDE"Btzz"BBCeWBtfBt.ACCrc  hRpVR, pTRPVPUu.uF pRV RV R2NK up4, pTRPVPUu.uF pRV RV R2NK up4, pTRPVPUUu.uF0wr4RVPV, RVPV, R 2NK2 upp4, p\ \ VP4^, 4FEpVR P VPV,VPV^,,4, pKG \ \ VP4^, 4FEpVR P VPV,VPV^,,4, pKG VR R PRVP44,, pVR R PRVP44,, pVR, pV#uupiuupiuuppi)z, Dot representation of the aligned sentence zgraph align { znode[shape=plaintext] "z_source" [label="z"] z_target" [label="z _source" -- "z _target" z)"{}_source" -- "{}_source" [style=invis] z)"{}_target" -- "{}_target" [style=invis] z{rank = same; %s}  c34"TFpRV,xK R#5i)z "%s_source"Nr%r&s& rr)&AlignedSent._to_dot..vs.V+Q}q/@/@+r+c34"TFpRV,xK R#5i)z "%s_target"Nr%r&s& rr)r6ws.U*Q}q/@/@*r+})r.rr rrangerformat)r sr(uvis& r_to_dotAlignedSent._to_dotTs  && RWW L 1!-aS6 L MM RWW K 1!-aS6 K LL RWW!OO +DADKKN#=A{K+   s4;;'!+,A =DD A AE" A-s4::*+A =DD 1  1q5! A, "chh.V$++.V&V WW "chh.U$**.U&U VV S?MK sH$ H) 6H. c fVP4PR4pRp\P!RRV,.\P\P\PR7pTPT4wrVTPR4# \ dp\ R4ThRp?ii;i)zB Ipython magic : show SVG representation of this ``AlignedSent``. utf8svgdotz-T%s)stdinstdoutstderrz0Cannot find the dot binary from Graphviz packageN) r?encode subprocessPopenPIPEOSError Exception communicatedecode)r dot_string output_formatprocesseouterrs& r _repr_svg_AlignedSent._repr_svg_}s\\^**62   W &&./ oo!! G&&z2zz&!!  WNOUV V WsA B B0 B++B0c RPVP4R,R,pRPVP4R,R,pRV RV R2#)zV Return a human-readable string representation for this ``AlignedSent``. :rtype: str r4:NNz...z 'z'>)r.rr )r sourcetargets& r__str__AlignedSent.__str__sQ $++&s+e3$**%c*U2 vhb99rc t\VPVPVPP 44#)zU Return the aligned sentence pair, reversing the directionality :rtype: AlignedSent )rr rrinvertrs&rr_AlignedSent.inverts( 4::t{{DOO4J4J4LMMr)rr rr r)__name__ __module__ __qualname____firstlineno____doc__rpropertyrrrr r r/r?rVr\r___static_attributes____classdictcell__ __classdict__s@rrrsq>'$8I D'R"&:NNrrcba]tRt^toRtRt]R4tRtRt R Rlt Rt R t R t R tVtR#) r a  A storage class for representing alignment between two sequences, s1, s2. In general, an alignment is a set of tuples of the form (i, j, ...) representing an alignment between the i-th element of s1 and the j-th element of s2. Tuples are extensible (they might contain additional data, such as a boolean to indicate sure vs possible alignments). >>> from nltk.translate import Alignment >>> a = Alignment([(0, 0), (0, 1), (1, 2), (2, 2)]) >>> a.invert() Alignment([(0, 0), (1, 0), (2, 1), (2, 2)]) >>> print(a.invert()) 0-0 1-0 2-1 2-2 >>> a[0] [(0, 1), (0, 0)] >>> a.invert()[2] [(2, 1), (2, 2)] >>> b = Alignment([(0, 0), (0, 1)]) >>> b.issubset(a) True >>> c = Alignment.fromstring('0-0 0-1') >>> b == c True c\PW4pV\.48wd\RV44M^VnRVnV#)c32"TF q^,xK R#5irNr%r'ps& rr)$Alignment.__new__..s+d!dsN) frozenset__new__max_len_index)clspairsr s&& rrsAlignment.__new__s=  ,/3y}/DC+d++!   rc p\VP4Uu.uFp\V4NK up4#uupi)a] Read a giza-formatted string and return an Alignment object. >>> Alignment.fromstring('0-0 2-1 9-2 21-3 10-4 7-5') Alignment([(0, 0), (2, 1), (7, 5), (9, 2), (10, 4), (21, 3)]) :type s: str :param s: the positional alignments in giza format :rtype: Alignment :return: An Alignment object corresponding to the string representation ``s``. )r split _giza2pair)rwr;as&& r fromstringAlignment.fromstrings+;A*Q-;<<;s3c |VP'gVP4VPPV4#)z> Look up the alignments that map from a given index or slice. )rv _build_index __getitem__)r keys&&rrAlignment.__getitem__s.{{{    {{&&s++rc &\RV44#)z9 Return an Alignment object, being the inverted mapping. c3`"TF$q^,V^,3VR,,xK& R#5i):NNNr%ros& rr)#Alignment.invert..s&>AQ41,2..s,.)r rs&rr_Alignment.inverts>>>>rNc 2\4pVP'gVP4V'g(\\ \ VP444pVF,pVP RVPV,44K. \V4#)z Work out the range of the mapping from the given positions. If no positions are specified, compute the range of the entire mapping. c3*"TF wrVxK R#5irr%)r'_fs& rr)"Alignment.range..s6~tq~s)setrvrlistr9rupdatesorted)r positionsimagerps&& rr9Alignment.rangesi {{{    U3t{{#345IA LL6t{{1~6 6e}rc &R\V4,#)= Produce a Giza-formatted string representing the alignment. z Alignment(%r))rrs&rr/Alignment.__repr__s--rc DRPR\V444#)rr4c3B"TFpRVR,,xK R#5i)z%d-%d:NrNNr%ros& rr)$Alignment.__str__..s>A!B%s)r.rrs&rr\Alignment.__str__sxx>>>>rc \VP^,4Uu.uFp.NK upVnVF,pVPV^,,PV4K. R#uupi)zh Build a list self._index such that self._index[i] is a list of the alignments originating from word i. N)r9rurvappend)r rrps& rrAlignment._build_indexsS $)Q#78#7ar#78 A KK!  $ $Q '9s A&)rvrur)rarbrcrdrers classmethodr~rr_r9r/r\rrgrhris@rr r sF2  = =,? . ? ((rr cTVPR4wr\V4\V43#-r{int) pair_stringr>js& rr|r|s&   S !DA q63q6>rcVVPR4wrp\V4\V43#rr)rr>rrps& r _naacl2pairr s($GA! q63q6>rc`aa\V4\JgQh\;QJdV3RlV4F 'dK RM RM!V3RlV44'g \R4h\;QJdV3RlV4F 'dK RM RM!V3RlV44'g \R4hR#)a> Check whether the alignments are legal. :param num_words: the number of source language words :type num_words: int :param num_mots: the number of target language words :type num_mots: int :param alignment: alignment to be checked :type alignment: Alignment :raise IndexError: if alignment falls outside the sentence c3^<"TF"p^V^,u;8*;'dS8MuxK$ R#5irnr%)r'pair num_wordss& rr)#_check_alignment..s%>IDqDG''i''Is--FTz&Alignment is outside boundary of wordsc3<"TF4q^,RJ;'g^V^,u;8*;'dS8MuxK6 R#5i)rNr%)r'rnum_motss& rr)r s3PidAw$99!tAw"9"9"99is ???z%Alignment is outside boundary of motsN)r r all IndexError)rrr sff&rrrsw  ?i '' ' 3>I>333>I> > >ABB 3PiP333PiP P P@AA QrPhraseTableEntry trg_phraselog_probc<a]tRtRtoRtRtRtRtRtRt Vt R#) PhraseTablei'zg In-memory store of translations for a given phrase, and the log probability of the those translations c$\4VnR#r)dict src_phrasesrs&rrPhraseTable.__init__-s 6rc (VPV,#)a} Get the translations for a source language phrase :param src_phrase: Source language phrase of interest :type src_phrase: tuple(str) :return: A list of target language phrases that are translations of ``src_phrase``, ordered in decreasing order of likelihood. Each list element is a tuple of the target phrase and its log probability. :rtype: list(PhraseTableEntry) rr src_phrases&&rtranslations_forPhraseTable.translations_for0s ++rc \W#R7pWP9d.VPV&VPV,PV4VPV,PRRR7R#)z :type src_phrase: tuple(str) :type trg_phrase: tuple(str) :param log_prob: Log probability that given ``src_phrase``, ``trg_phrase`` is its translation :type log_prob: float )rrcVP#r)r)rSs&r!PhraseTable.add..Ls rT)rreverseN)rrrsort)r rrrentrys&&&& raddPhraseTable.add?sb!JJ -- -+-D  Z ( $++E2 $)).BD)QrcWP9#rrrs&&r __contains__PhraseTable.__contains__Ns----rrN) rarbrcrdrerrrrrgrhris@rrr's$ " , R..rr) rI collectionsrrrrr r|rrrrr%rrrsZ"QNQNh_( _(D  B*0<2LM(.(.r