Báo cáo khoa học: "PARSING HEAD-DRIVEN PHRASE STRUCTURE GRAMMAR" docx
Báo cáo khoa học: "Parsing Noun Phrase Structure with CCG" potx
... 335–343,
Columbus, Ohio, USA, June 2008.
c
2008 Association for Computational Linguistics
Parsing Noun Phrase Structure with CCG
David Vadas and James R. Curran
School of Information Technologies
University ... novel features, with an increase in
parser performance of 1.51%.
1 Introduction
Internal noun phrase (NP) structure is not recovered
by a number of widely-used parsers, e.g. C...
Báo cáo khoa học: "REVISED GENERALIZED PHRASE STRUCTURE GRAMMAR" potx
... enormous
phrase structure trees whose yield is the empty string (see Ristad,
1986a). Thus, a parser that used such a grammar must nonde-
terministically postulate elaborate phrase structure ... set of ID rules, defining a set of
phrase structure trees of depth one (local trees). One principle of
UFI is the head feature convention, which ensures that phrases
are projected from...
Tài liệu Báo cáo khoa học: "Optimizing Typed Feature Structure Grammar Parsing through Non-Statistical Indexing" doc
... oc-
currences of such variables are limited to a single
category in a phrase structure rule. External vari-
ables are the variables used to share structure be-
tween categories. If a variable is used for ... TFSG rules can cause
the categories to change in structure (due to exter-
nal variable sharing), we need some extra notation
to refer to a phrase structure rule’s categories a...
Báo cáo khoa học: "Parsing the Internal Structure of Words: A New Paradigm for Chinese Word Segmentation" doc
... the Penn Chinese
Treebank and actually is able to parse both
word and phrase structures in a unified way.
1 Why Parse Word Structures?
Research in Chinese word segmentation has pro-
gressed tremendously ... word structures naturally. Evaluation shows
that the model can learn much of the regularity of
word structures, and also achieves reasonable ac-
curacy in parsing higher level constituent...
Báo cáo khoa học: "Adding Noun Phrase Structure to the Penn Treebank" ppt
... base noun phrases (NPs), commit-
ting only to flat structures that ignore the
complexity of English NPs. This means
that tools trained on Treebank data cannot
learn the correct internal structure ... developed from the Penn Treebank, to
represent noun phrase structure more accurately.
240
2 Motivation
Many approaches to identifying base noun phrases
have been explored as part of chunking...
Báo cáo khoa học: "Parsing for Semidirectional Lambek Grammar is NP-Complete" doc
... that this natural-deduction-style proof in the
type logic corresponds very closely to the phrase-
structure tree one would like to adopt in an analysis
with traces. We thus can derive Bill ... 5 The claim embodied by se-
quent U =~ A can be read as "formula A is derivable
from the structured database U". Figure 2 shows
Lambek's original calculus t.
First of all, since
Báo cáo khoa học: "Multi-Modal Combinatory Categorial Grammar" docx
... lead to ungrammatical
scrambled orders inside noun phrases. For exam-
ple, consider (9), in which the category of a post-
nominal prepositional phrase composes into that
of a pre-nominal adjective.
(9)
*a ... to
handle. This would amount to using the categorial
grammar system as a kind of specialized phrase
structure grammar — at which point we lose the
appeal of the purely type-driven...
Báo cáo khoa học: "PARSING HEAD-DRIVEN PHRASE STRUCTURE GRAMMAR" docx
... PARSING HEAD-DRIVEN PHRASE STRUCTURE GRAMMAR
Derek Proudlan and Carl Pollard
Hewlett-Packard Laboratories
1501 Page Mill Road
Palo Alto, CA. 94303, USA
Abstract
The Head-driven Phrase Structure ...
information from phrase structure rules into the lexi-
con
[5]. This wholesale lexicalization of linguistic infor-
mation in HPSG results in a drastic reduction in the
nu...
Tài liệu Báo cáo khoa học: "Understanding the Semantic Structure of Noun Phrase Queries" pptx
... focus
of previous works, but also understanding
their semantic structure. In this work, we
formally define the semantic structure of
noun phrase queries as comprised of intent
heads and intent modifiers. ... July 2010.
c
2010 Association for Computational Linguistics
Understanding the Semantic Structure of Noun Phrase Queries
Xiao Li
Microsoft Research
One Microsoft Way
Redmond, WA 98...
Tài liệu Báo cáo khoa học: "Parsing with generative models of predicate-argument structure" pptx
... long-range
dependencies.
1 Introduction
State-of-the-art statistical parsers for Penn
Treebank-style phrase- structure grammars (Collins,
1999), (Charniak, 2000), but also for Categorial
Grammar (Hockenmaier ... (represented in terms of
the categories
):
3 Predicate-argument structure in CCG
Like Clark et al. (2002), we define predicate-
argument structure for CCG in terms of the depen-...