Eckhard Bick - VISL

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VALENCY & SEMANTIC CLASS DISAMBIGUATION iterative application of contextual Contraint Grammar rules - 14 - "PALSEM" TRANSLATION MODULE I programmed in C, handles polysemy resolution, using bilingually motivated distinctions, based on disambiguated morphological, syntactic, valency and semantic class tags, attaches base form translation equivalents and some target language flection information MT MODULE TRANSLATION EQUIVALENT MAPPING (CG) Constraint Grammar rules mapping, changing or appending context dependent base form or word form translations TRANSLATION MODULE II handles bilingual syntax transformation, rearranging Portuguese (SL) word order, group & clause structure according to Danish (TL) grammar, uses a rule rule file that is compiled into a Perl program "PAL- TRANS" MORPHOLOGICAL GENERATOR written in C, works on - translated - lexeme base forms and tag lists, builds Danish words from a base form lexicon with inflexion information
2 The lexicomorphological level: Structuring words 2.1 A lexical analyser for Portuguese: PALMORF PALMORF is a so-called morphological or lexical analyser, a computer program that takes running text as input and yields an analysed file as output where word and sentence boundaries have been established, and where each word form or "wordlike" polylexical unit is tagged for word class (PoS), inflexion and derivation/composition, with morphologically ambiguous words receiving multiple tag lines. The notational conventions used by PALMORF match the input conventions for a CG disambiguation grammar. With a CG-term, an ambiguous list of morphological readings, as in (1), is called a cohort. (1) WORD FORM BASE FORM SECONDARY TAGS PRIMARY TAGS revista "revista" N F S ‘magazine’,‘inspection’ "revestir" V PR 1/3S SUBJ VFIN ‘to cover’ "revistar" V IMP 2S VFIN ‘to review’ "revistar" V PR 3S IND VFIN "rever" V PCP F S ‘to see again’,‘to leak’ In example (1), the word form 'revista' has been assigned one noun-reading (female singular) and four verb-readings, the latter covering three different base forms, subjunctive, imperative, indicative present tense and participle readings. By convention, PoS and morphological features are regarded as primary tags and coded by capital letters. In addition there can be secondary lexical information about valency and semantic class, marked by bracketing, like for intransitive verbs (“rever” - ‘leak through’) , for monotransitive verbs (“rever” - ‘see again’), for pre-name distribution (“revista VEJA” - ‘VEJA magazine”), for 'readable object' or for +CONTROL and +PERFECTIVE ASCPECT (“revista” - ‘review’). (2) WORD FORM BASE FORM SECONDARY TAGS PRIMARY TAGS (i) telehipnotizar "hipnotizar" V INF 0/1/3S "hipnotizar" V FUT 1/3S SUBJ VFIN (ii) corruptograma ALT xxxograma "corrupt" N M S - 15 -
Page 1 and 2: Eckhard Bick ♠ THE PARSING SYSTEM
Page 3 and 4: Abstract The dissertation describes
Page 5 and 6: 3.7.2. Making the most of the lexic
Page 7 and 8: Inflexion tags 451 Syntactic tags 4
Page 9 and 10: first, - but soon, it would move th
Page 11 and 12: disambiguated), same level tags (to
Page 13: chain, but rather the linguistic co
Page 17 and 18: The core of PALMORF is written in C
Page 19 and 20: (d) as part of words. For instance,
Page 21 and 22: (1) binary search technique: a . .
Page 23 and 24: acapitã#=#####B(orn)###413 acara#a
Page 25 and 26: Words with graphical accents often
Page 27 and 28: 2.2.3.2 The inflexional endings lex
Page 29 and 30: 2.2.3.3 The suffix lexicon (1) 1
Page 31 and 32: Suffix combination rules is also us
Page 33 and 34: an V a DERP a- [ANT] brad Vi as HV
Page 35 and 36: "inimigo" ADJ M P "inimigo" N M P
Page 37 and 38: variable word forms receive '_'- li
Page 39 and 40: The remaining 2 words of the 4-word
Page 41 and 42: appear truncated or not, depending
Page 43 and 44: comparison to the substring consist
Page 45 and 46: My present linguistic solution 28 i
Page 47 and 48: In some non-personal proper nouns,
Page 49 and 50: (i.e., not too complex) derivationa
Page 51 and 52: 2.2.4.5 Abbreviations and sentence
Page 53 and 54: Another case, where meaning bearing
Page 55 and 56: 2.2.4.6 The human factor: variation
Page 57 and 58: circumflex-) accented words without
Page 59 and 60: the tagger tries to identify a word
Page 61 and 62: xxxar-#1##AaiD######54578 endings-s
Page 63 and 64: "sombrancelha" N F P '=sobrancelha
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(6) Word class distribution and par
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VFIN 24.96 16 7.77 9 2.46 - - 25 3.
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the present participle by derivatio
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Inflexion tags combine with word cl
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2.2.5.2 The individual word classes
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SPEC "specifiers": independent pron
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WORD FORM and LEXEME CATEGORIES gen
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WORD FORM and LEXEME CATEGORIES dea
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mood VFIN finite IND indicative SUB
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prefixal derivation in verbs comple
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graph. def. characteristics: hyphen
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PP prepositional group de=aluguel
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2.2.5.3 Portuguese particles By ‘
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Deictic adverbs refer to discourse
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algo, algum=tanto, nada, nadinha?,
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quando når, da hvornår quanto [QU
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(1) Language distribution and error
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3 Morphosyntactic disambiguation: T
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(4) "quando" conjunction or adverb
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oth for the simple ambiguities intr
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case of a 3.person possessor, the u
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The fact that these semantic distin
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In (Karlsson et. al, 1995:19ff) an
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meaning- scope someone loves everyb
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• 5. Tags can be integrated as me
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19 0 0 - - - - >= 20 15 1 - - - - t
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Portuguese non-name words. Apart fr
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words: 40.8 10.5 17.9 2.9 0.5 3.1 8
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quite distinct, and few irregular e
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3.3 Borderline ambiguity: The limit
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(5b) They [saw(see) [the girl with
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Choose 'saw', if within the same cl
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ambiguous words), moving them to "l
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(3) modernização "modernizar" N
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3.5.1 Probabilistics: The 'fire a l
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In a brute force approach, for an a
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While undeniably involving more con
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Generative Grammar, introduced and
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node without branches matching the
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example is a grammar of one termina
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wide coverage tagging and parsing t
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ambiguity, Constraint Grammar can a
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syntactic reach of ordinary hand-cr
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“base form-1” .. .. WORD CLAS
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Base forms ("...") are tags like al
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play after base form rules targetin
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The above sequences are examples of
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3.7.2 Making the most of the lexico
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(1) number of CG rules containing a
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Intuitively, one might assume (a) t
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constructions. Something similar is
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are shaded, as well as the sum-colu
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For global context syntactic rules
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In table (4), three types of contex
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ules appear to be slightly more com
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(5a), continued ¡ ¢ number of con
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in the sequential “understanding
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all - 356 978 492 2219 C-percent 39
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3.8 Mapping: From word class to syn
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@ADVL [N-temp ADV PRP #ICL #FS #AS]
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@#AS-A< [ADV-rel] @#AS- @#AS-
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During the project period I have do
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syntactic errors around it, by prov
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1. Orthography and layout normalisa
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Of course, the use of dishesion mar
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S2 para aquele ... está perfeitame
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Parser performance on speech data (
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4 The syntactic level: A dependency
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subjects, but the second subject ca
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(7) SUBJ o [o] DET M S @>N 'the' b
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4.1.2 Dependency relation types: Cl
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(1) Table: Constituent structure ty
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Any further, more detailed, syntact
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discussion are inspired by Perini (
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Thus, we get ”Comeu peixe/bananas
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type-4 adverbials. Second, adverbia
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they all share one, and only one, c
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AB todos estes ambos os uns, uma,
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from personal pronouns, are not mut
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noun. Only very few adjectives (the
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4.2.2 The adpositional group head a
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However, adnominals can point to a
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(g) isso existe (até/nem (nos Esta
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4.3 The verb chain 4.3.1 The predic
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* aspect estar/andar/continuar/segu
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Ordinarily, 'o' is understood as su
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second verb's object 152 ), with so
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different subjects of matrix and su
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case function ± fronting ÷ fronti
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Quando ”quando” ADV @#FS-ADVL
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abalançar a kaste sig ud i at acab
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fazer xt, xd xdr få til at, lade s
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4.4 Clause types and clause functio
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@#ICL- non-finite subclause (combin
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While it is one of the clausality t
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(6) ..., tudo @S< pago @NN mão @
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(1g) Não [queria [comer outro bolo
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Apart from the presence of predicat
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demais [demais] DET M/F S/P @>N ‘
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element is a comparator and the sec
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without a predicator's valency info
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quantifying) cases, indicating adve
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4.5 Under the magnifying glass: Spe
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O assunto eram as ditaduras 2. F E
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The examples show that the normal "
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focusing function to the syntactic
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the quantifying adverbs mais and me
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qual DET @SC> @#FS-KOMP< antes era
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o [o] DET M S @AS< ‘that’ de [d
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[P=predicator, O=object, A=adverbia
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mais=de [mais=de] ADV @>A ‘more
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(2k) Ficou [ficar] V PS 3S IND V
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interno [interno] ADJ M S @N< '-'
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a preposition, por, then allowing f
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4.5.3 Tagging the quantifier 'todo'
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connection with personal pronouns -
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4.5.4 Adverbial function 4.5.4.1 Ar
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explanation for this may be that a
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a [a] DET F S @>N ‘the’ pergun
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carro [carro] N M S @SUBJ> ‘car
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pass the second test ('*De seu novo
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Therefore, the @ADV-@ADVL distincti
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@PIV, @ADV and @SC are - unlike @AD
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heads a "material" PP. The followin
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4.5.4.3 Intensifier adverbs Intensi
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4.5.4.4 Complementiser adverbs: Int
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complementiser in nominal FS or ICL
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hooked AS-relatives (3) they even a
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4.5.4.5 Adverb disambiguation and o
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position: adverb class: A) set oper
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(5b) fits fairly well into the (A)
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antes/depois+de Depois [depois] AD
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While (2c-e) can be described as pr
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In (4d) ter ('have') does have mono
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When the potential subject is post-
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(1) Table: functions of pronominal
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ditador [ditador] N M S @N ‘-’
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In other contexts, para is not usua
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life that the work of different gra
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SPEC DET/SPEC ¬ @#FS/AS-N< artic
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4.6.3 Tree structures for constitue
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dono de restaurante que pilota a pr
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|-@N
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4.7 Elegant underspecification An i
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5 The uses of valency: A bridge fro
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Returning to a research view concer
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5.2 Valency instantiation: From sec
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Note that valency is treated as a f
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REMOVE (@%vt) (0 @%vK) (*1C @
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word order can't be counted on to m
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than by asking ‘is it an A?’ or
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hemisphere membership 218 , - ‘SW
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disambiguate the senses ‘suit’
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In all, the parser uses 16 atomic s
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‘+ uninferable positive feature +
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6.5 A semantic Constraint Grammar I
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capable - by “negative instantiat
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LIST = (@=c @=v @=p @=s @=t) ; LIS
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um verão ‘a summer’ * ok. * f
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An example of argument-head polysem
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The program module implementing the
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REMOVE (@=X) (*1 @%jn BARRIER @NON-
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@AUX, 'know how to, can' @MV, 'ta
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Note that the MT engine will choose
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Even where none of the semantic rul
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A casa revista PCP @N< revista PC
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O Itamarati +HUM @SUBJ The Itamara
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and a morphological CG module may c
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• V-trees - vertical tree structu
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descriptional complexity: 'full tag
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Here, each line of the CG-notation
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7.2 Grammar teaching on the Interne
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system's disposal. After acquiring
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the reach of "subject"-ness or "obj
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provided and what choices can be ma
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terminological confusion ? term not
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The tree structure of the sample se
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(5) Syntactic tree structures (VISL
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two function tags, since the studen
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7.3 Corpus research In the case of
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- 426 -
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- 428 -
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The NURC speech corpus (“Norma ur
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7.4 Machine translation 7.4.1. A te
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processors used by translators or l
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The following diagram shows how dif
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8 Conclusion: The advantages of inc
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- 440 -
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Sources: English: EngCG: Karlsson e
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(4) Table: syntactic tree structure
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lexicon which ensure removal of fal
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8.2 CG Progressive Level Parsing: G
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Methodologically, it is commonly cl
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$ the dollar sign is used to mark n
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@#ICL-AUX< argument verb in verb ch
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"unit" noun (e.g. "20 metros") att
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SEMANTIC TAGS The tables below prov
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ANIMATE NON-HUMAN, NON-MOVING bo 13
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stof 136 fabric seda ‘silke’ ma
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(-CONCRETE, - MASS, +COUNT) ‘modu
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ax 25 plus below: (-CONCRETE, -MASS
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cI 199 process (-CONTROL, imperfect
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oot search lexicon search takes a w
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translation, prepares bilingual lex
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in a typical van/von-name chain con
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Appendix: Example sentences The fol
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é [ser] V PR 3S IND VFIN @FMV quas
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será [ser] V FUT 3S IND VFIN @FMV
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julgamento [julgamento] N M S @P< $
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Os [o] DET M P @>N sabonetes [sabo
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parte [parte] N F S @P< de [de] PR
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inesquecíveis [inesquecível] ADJ
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Literature Almeida, Napoleão Mende
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Lindberg, Nikolaj, “Learning Cons
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Alphabetical index Page numbers in
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averbal subclauses;254 finite subcl
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attributive;249 nominal;248 finite
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for auxiliary definition;235;237 pa
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subject identity test;236 subjects
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ERROR: rangecheck OFFENDING COMMAND
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