Of+"SrSSKrSSKJr S SjrSSjrSSjrS SjrSrSS jr S r S r \ S :Xa\ "5 \ "5 gg)z Utility functions for batch-processing sentences: parsing and extraction of the semantic representation of the root node of the the syntax tree, followed by evaluation of the semantic representation in a first-order model. N)evaluatecSSKJn SSKJnJn [ X5(a U"U5nOU"XS9n/nUH>nUR 5n [URU 55n URU 5 M@ U$)ab Convert input sentences into syntactic trees. :param inputs: sentences to be parsed :type inputs: list(str) :param grammar: ``FeatureGrammar`` or name of feature-based grammar :type grammar: nltk.grammar.FeatureGrammar :rtype: list(nltk.tree.Tree) or dict(list(str)): list(Tree) :return: a mapping from input sentences to a list of ``Tree`` instances. rFeatureGrammar)FeatureChartParser load_parsertrace) nltk.grammarr nltk.parserr isinstancesplitlistparseappend) inputsgrammarr rrrcpparsessenttokenssyntreess //usr/lib/python3/dist-packages/nltk/sem/util.py parse_sentsrsi,:'**  (  . F() h McSSKJn UR5n[X25(deX1$![a [ USS9 [ SU-5 ef=f)z Find the semantic representation at the root of a tree. :param syntree: a parse ``Tree`` :param semkey: the feature label to use for the root semantics in the tree :return: the semantic representation at the root of a ``Tree`` :rtype: sem.Expression r)FeatStructNonterminal )endz'has no specification for the feature %s)r rlabelr KeyErrorprint)syntreesemkeyrnodes r root_semrepr&4s]3 ==?D d 2 22 2B| B d 7&@A Bs."AAc [XUS9VVs/sH nUVs/sHoU[XR54PM snPM" snn$s snfs snnf)a Add the semantic representation to each syntactic parse tree of each input sentence. :param inputs: a list of sentences :type inputs: list(str) :param grammar: ``FeatureGrammar`` or name of feature-based grammar :type grammar: nltk.grammar.FeatureGrammar :return: a mapping from sentences to lists of pairs (parse-tree, semantic-representations) :rtype: list(list(tuple(nltk.tree.Tree, nltk.sem.logic.ConstantExpression))) r )rr&)rrr$r rsyns rinterpret_sentsr)IsJ$F5A AH5==HS{3' (H=A = s >9 >>c[X5VVVs/sH-nUVVs/sHupgXgURSU-X4S94PM snnPM/ snnn$s snnfs snnnf)a Add the truth-in-a-model value to each semantic representation for each syntactic parse of each input sentences. :param inputs: a list of sentences :type inputs: list(str) :param grammar: ``FeatureGrammar`` or name of feature-based grammar :type grammar: nltk.grammar.FeatureGrammar :return: a mapping from sentences to lists of triples (parse-tree, semantic-representations, evaluation-in-model) :rtype: list(list(tuple(nltk.tree.Tree, nltk.sem.logic.ConstantExpression, bool or dict(str): bool))) z%sr )r)r)rrmodel assignmentr interpretationsr(sems revaluate_sentsr/[si" /v?   @O. - u~~dSj*~J K-  @    s A!A A Ac SSSSSSSSS 14S S S 14S SS14SSS14S1Sk4S1Sk4S1Sk4S1Sk4S1Sk4/n[R"U5nURn[R"X!5q[R "U5qg)N)johnb1)maryg1)suzieg2)fidod1)tessd2)noosangirlr4r6boyr2b2dogr8r:barkwalk>r2r8r6chase>r2r4r?r4r4r8r6r:see>rDr?r:r:r2r4r2r6r<in>r2r<r?r<r:r<with>r2r8rDr8r2rK)r ValuationdomainModelm0 Assignmentg0)vvaldoms r demo_model0r]ps  $ t  t  $ #$ JK  Q  67 IJ% A*   Q C **C  !B   S !BrcD[R"USU5nUVs/sHo3R5PM nnSSS5 WVs/sHn[U5S:dMUPM nnUVs/sHo3SS:XaM UPM nnU$s snf!,(df  NT=fs snfs snf)Nrr#)codecsopenrstriplen)filenameencodingfplsentss r read_sentsrjs XsH -%'(RR( . ,1Q!QE , 11qTS[QE 1 L ) . - - 1s3BBBBB( B8BB BcSSKJn URS5n[SU-5 [S5 [ S/USS9H nUSup4[5 [S U5 M" g ) z Check that interpret_sents() is compatible with legacy grammars that use a lowercase 'sem' feature. Define 'test.fcfg' to be the following rrz1 % start S S[sem=] -> 'hello' zReading grammar: %sz********************hellor.)r$zoutput: N)r r fromstringr"r))rgreadingr(r.s rdemo_legacy_grammarrpsb,!!  A  ! #$ (O"G9a>1:  j#?rc SSKnSSKJn SnU"US9nURSSSSSSSS9 UR S S S S S S9 UR SSSSSS9 UR SSSSSS9 UR SSSSSS9 UR SSS S!S"S#9 UR S$S%S S&S'S#9 UR S(S)S*S+S,S#9 UR S-S.S*S/S0S#9 UR 5upES1n[ 5 /S2QnS3nUR(a URn UR(a URnUR(a[S4UR-5 Uc [W 5n[n [n UR(a[XxXUR S59n O[#XxUR$S59n ['U5HupS6n[)S7U-5 [)U5 UR(a`W UHUunnn[+U[,5(a[/UR155n[)S8UU4-5 [)U5 US6- nMW MW UHunn[)S8UU4-5 US6- nM M g)9Nr) OptionParserz, Parse and evaluate some sentences. ) descriptionTdefault)rbetasyntracesemtracedemor sentencesz-dz--demoryzBchoose demo D; omit this for the default demo, or specify 'chat80'D)desthelpmetavarz-gz--gramrzread in grammar GGz-mz--modelr+z"import model M (omit '.py' suffix)Mz-sz --sentencesrzz"read in a file of test sentences SSz-ez --no-eval store_falserzjust do a syntactic analysis)actionr|r}z-bz--no-beta-reductionrvzdon't carry out beta-reductionz-tz --syntracecountrwz.set syntactic tracing on; requires '-e' optionz-Tz --semtracerxzset semantic tracing onz------------------------------)zFido sees a boy with MaryzJohn sees Maryzevery girl chases a dogzevery boy chases a girlzJohn walks with a girl in Noosaz who walksz"grammars/sample_grammars/sem2.fcfgzimport %s as modelr z Sentence: %sz%d: %s)sysoptparserr set_defaults add_option parse_argsr]rzrr+execrjrWrYrr/rxr)rw enumerater"r dictsetkeys)rrrrsoptsoptionsargsSPACERrigramfile sentsfiler+rn evaluationssemrepsirr<r#semrepvalues rryrys%K K 0D   OO   Q  OO hY-@# OO   1  OO   1  OO   +  OO   -  OO   =  OO   & oo'OW FM E4H%% ??}} !GMM 12 }9% E A$UegFVFVW !%9I9IJU#  %& f   *5a.&eT** -Ei1f+-.e Q +9$+1:i1f+-.Q$.$r__main__)r)SEM)rr)utf8) __doc__ranltk.semrrr&r)r/r]rjrpry__name__rrrsW6 *$*"B0{| zFr