Báo cáo khoa học: "Parsing with Discontinuous Constituents" pot
Báo cáo khoa học: "Parsing with Discontinuous Constituents" pot
... location of a constituent to allow discontinuous Ioctaions, one can describe the discontinuous consti- tuents of non-configurational languages. These discontinuous consti- tuents can be described ... languages is described by allowing constituents to have discontinuous [ocatio,ls. To demonstrate that it is possible to parse with such discontinuous constituents. I show how they can be incorporated ... familiar with Prolog should note that [ [lave reversed the usual orthographic convention by writing variables with a lower ca~e intial letter (they are also italicized), while constants begin with...
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Tài liệu Báo cáo khoa học: "Parsing with generative models of predicate-argument structure" pptx
... derivation tree itself. It as-sumes that binary trees (with parent category)have one head child (with category) and one non-head child (with category), and that each nodehas one lexical head. ... projection of constituents. After expandingthenode to and, the NP that is co-indexed with woman can-not be unified with the object of saw anymore.These examples have shown that two changes tothe ... number of times it occurs with lex-ical categoryand is the th argument of the lexicalfunctorin question, divided by the numberof times theth argument of is instantiated with a constituent whose...
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Báo cáo khoa học: "Parsing with an Extended Domain of Locality" pot
... since the same rule may be used several times within a single derivation, and also the same constituent may be used within different partial analyses with features instantiated in dif- ferent ... addressed both with respect to grammar encoding (Evans et al., 1995; Candito, 1996) and parsing (Joshi and Srinivas, 1994; Evans and Weir, 1998). On the other hand, if the EDOL hypothesis holds ... 1998). It can be seen as an evaluation of how well these two grammars make use of the EDOL hypothesis with respect to those dependencies that are being checked by the parser. 2 Parsing Unification-Based...
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Báo cáo khoa học: "Parsing with polymorphism" doc
... and with either the same path or with path p. Also, in leaves of a proof in L (/'\'v), categories only occur with zero path. Therefore, if we have 124 a proof of a sequent with ... positive occurrence of ViX.X/X and with non-zero path, then there must occur higher in the proof, a sequent with V,.X.X/X occurring again positively and this time with with zero-path. In other words ... leaf such as T ==~ X. One can hy- pothesis X = Y/Z, extend the deduction tree by the rewrite associated with a slash Right rule, obtain- ing once again a leaf with a succedent occurrence of an...
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Báo cáo khoa học: "Parsing with Treebank Grammars: Empirical Bounds, Theoretical Models, and the Structure of the Penn Treebank" ppt
... signature and a span .If we align the tags in with words in and alignthe categories in with spans of words in , then pro-vided the categories align with a non-empty span (forNOEMPTIES) or any ... that all states with the same signature will match a span length with the same probability. For example, the stateNPNP NP CC . NP has the same signature, but mustalign the CC with the final element ... encodings. (c) The ratio of the number of edges and traversals produced with a top-down strategy overthe number produced with a bottom-up strategy (shown for TRIE-NOTRANSFORM, others are similar).parsing...
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Báo cáo khoa học: "Parsing and Subcategorization Data" pot
... the Binomial Hypothesis Test(Brent, 1993) and a back-off algorithm (Sarkar andZeman, 2000).1. The Binomial Hypothesis Test (BHT): Letp be the probability that an scfioccurs with verbjthat ... usually proceed intwo steps and we adopt this approach.1. Hypothesis Generation: Identify all SCCsfrom the corpus data.2. Hypothesis Selection: Determine which SCCis a valid SCF for a particular ... small clause NP-NP, (NP)-ADJPcontrol (NP)-INF-tocontrol (NP)-INF-wh-toSBAR with a complementizer (NP)-S-wh, (NP)-S-thatwithout a complementizer (NP)-S-thatTable 1: SCCs for different clauseswe...
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Báo cáo khoa học: "PARSING AS NATURAL DEDUCTION " pot
... notation for a cate- gory c paired with its (partial) syntax tree t is c : t. A basic category is associated with the tree con- sisting of one node labelled with the name of the category. Complex ... applications, i.e. one distinguished leaf is labelled with the functor category which this tree is associa- ted with, all other leaves are labelled with variables bound by A-operators. The list of ... [Hepple/Morrill 1989]. Other approaches to cope with the problem of spurious ambiguity take into account the peculari- ties of categorial grammars compared to grammars With "context-free skeleton"....
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Báo cáo khoa học: "Parsing preferences with Lexicalized Tree Adjoining Grammars : exploiting the derivation tree" pptx
... attachment" (MA) are often formulated with respect to constituent trees. We present 3 preference principles based on "derivation trees" within the framework of LTAGs. We argue ... substitution with an initial tree that has a root of same category. Adjunction is optional (although it can be forbidden or made compulsory using specific constraints) and deals essentially with determiners, ... derivation trees : 1. Prefer the derivation tree with the fewer number of nodes 2. Prefer to attach an m-tree low 6 3. Prefer the derivation tree with the fewer number of 13-tree nodes Principle...
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Báo cáo khoa học: "Parsing Noun Phrase Structure with CCG" potx
... than the overall figure.We have also experimented with using automat-ically assigned POS tags. These tags are accurate with an F-score of 96.34%, with precision 96.20%and recall 96.49%. Table ... to deal with. We may also need to change dependencies reachingfrom inside to outside the NP, if the head(s) of theNP have changed. In these cases we simply replacethe old head(s) with the ... Inter-vening non-conjunct nodes are given the same cate-gory with the conj feature, resulting in a derivationthat can be parsed with the standard CCGbank bi-nary coordination rules:conj X...
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Báo cáo khoa học: "Parsing the Wall Street Journal with the Inside-Outside Algorithm" potx
... grammar with the par- tial bracketings of these sentences given in the corpus. Using part-of-speech tags as the only source of lexical information, high bracketing accuracy is achieved even with ... algorithm on a gr,-unmar with n nontermi- nals requires O(n31wl 3) time per t~ning sentence w. Sec- ond, the inferred grammar imposes bracketings which do not agree with linguistic judgments ... bracketing imposed by the inferred grammar with the partial brack- eting of held out sentences. Surprisingly high bracketing accuracy is achieved with only 1042 sentences as train- • ing materi,'d:...
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