topdown kbest a∗ parsing
Báo cáo khoa học: "Top-Down K-Best A∗ Parsing" pptx
Ngày tải lên :
07/03/2014, 22:20
... NP
s
1
s
2
s
n-1
(d)
G
s
0
NN
NP
Figure 1: Representations of the different types of items
used in parsing. (a) An inside edge item I(VP, 2, 5). (b)
An outside edge item O(VP, 2, 5). (c) An inside ... to particular conclusion item
as “waiting” on another item before it can be built.
2.2 A
∗
A
∗
parsing (Klein and Manning, 2003) is an al-
gorithm for computing the 1-best parse of a sen-
tence. ... β(G, 0, n) will never be re-
moved from the agenda, allowing some edges to
be safely pruned during parsing. The more closely
h(e) approximates the Viterbi outside cost α(e),
the more items are pruned.
2.3...
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Tài liệu Báo cáo khoa học: "A Unified Syntactic Model for Parsing Fluent and Disfluent Speech∗" ppt
Ngày tải lên :
20/02/2014, 09:20
... sym-
bols
3
, and interruption point information. While an
integrated system for processing and parsing speech
may use both acoustic and syntactic information to
find repairs, and thus may have ... experiment is intended to evaluate the use of the
right corner transform and syntactic information on
parsing speech repair. To make a fair comparison to
the CYK baseline of (Hale et al., 2006), the ... results in Table 1 show that this system per-
forms comparably to the state of the art in over-
all parsing accuracy and reasonably well in edit de-
tection. The TAG system (Johnson and Charniak,
2004)...
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Tài liệu Báo cáo khoa học: "Japanese Dependency Parsing Using Co-occurrence Information and a Combination of Case Elements" pdf
Ngày tải lên :
20/02/2014, 12:20
... hypothesis
that the two proposed probabilities have an effect
on improving the parsing accuracy. We can also
verify that the parsing accuracy improves by using
imprecise information obtained from an ... parse which uses this data set is (Kudo
and Matsumoto, 2005), and their parsing accuracy
is 91.37%. The features and the parsing method
used by their model are almost equal to the poste-
rior ... Japanese dependency parsing by
using large-scale statistical information. It
takes into account two kinds of informa-
tion not considered in previous statistical
(machine learning based) parsing meth-
ods:...
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Tài liệu Báo cáo khoa học: "A Pipeline Framework for Dependency Parsing" ppt
Ngày tải lên :
20/02/2014, 12:20
... the performances of several
of the state of the art dependency parsing systems
with ours. When comparing with other depen-
dency parsing systems it is especially worth notic-
ing that our system ... dependency parsing, prove that it satis-
fies these principles, and show experimentally that
this improves the accuracy of the resulting tree.
Specifically, our approach is based on a shift-
reduced parsing ... improving the set of actions taken
by the parsing algorithm, and by using a look-
ahead search. The second principle is used to jus-
tify the control policy of the parsing algorithm –
which edges to...
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Tài liệu Báo cáo khoa học: "Sentence Disambiguation by a Shift-Reduce Parsing Technique" pot
Ngày tải lên :
21/02/2014, 20:20
... yields only the preferred
structure. The actual output of the parsing system can be found
in Appendix II.
3. The Parsing System
The parsing system we use is a shift-reduce purser. Shift-
reduce ... States government.
constraints, e.g., the difl]culty of parsing garden-path sentences,
could be modeled. His claim about deterministic parsing was
quite strong. Not only was the behavior of ... the garden-
path sentences as a side effect. The parsing system is based on
the shih reduee scheduling technique of Pereira [forthcoming].
Our parsing algorithm is a slight variant of LALR{ 1)...
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Tài liệu Báo cáo khoa học: "A Tool for Multi-Word Expression Extraction in Modern Greek Using Syntactic Parsing" pdf
Ngày tải lên :
22/02/2014, 02:20
... Computational Linguistics
A Tool for Multi-Word Expression Extraction in Modern Greek
Using Syntactic Parsing
Athina Michou
University of Geneva
Geneva, Switzerland
Athina.Michou@unige.ch
Violeta Seretan
University ... items,
also called multi-word expressions (henceforth
MWEs). Its main functionalities are: 1) the robust
parsing of Greek text corpora and the syntax-based
detection of word combinations that are likely ... supporting the manual creation of
monolingual and bilingual MWE lexicons.
The tool relies on a symbolic parsing technol-
ogy, and is part of FipsCo, a larger extraction sys-
tem (Seretan, 2008) which...
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Tài liệu Báo cáo khoa học: "TOWARDS A DICTIONARY SUPPORT ENVIRONMENT FOR REAL TIME PARSING" potx
Ngày tải lên :
22/02/2014, 09:20
... the testing of
software on an unbiased sample. This access is
sufficient to support our current parsing
requirements but could be supplemented with the
addition of further indexing files if ... the two verbs; so the criteria for the
assignment of the V code seem to be syntactic.
174
The parsing systems we are interested in all
employ grammars which carefully distinguish
syntactic ... information and
map it into the representation scheme used for lexical
entries used by one of these parsing systems. To
demonstrate that this is possible we have
implemented a system which constructs...
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Báo cáo khoa học: "Cross-Domain Dependency Parsing Using a Deep Linguistic Grammar" docx
Ngày tải lên :
08/03/2014, 00:20
... sta-
tistical approaches.
3 Dependency Parsing with HPSG
In this section, we explore two possible applica-
tions of the HPSG parsing onto the syntactic de-
pendency parsing task. One is to extract depen-
dency ... have
been focusing on constituent-based parsing, while
the domain adaptation of the dependency parsing
has not been fully explored.
Taking a different approach towards parsing,
grammar-based parsers appear ... par-
tial parsing mode does not work well as a fall-
back in the feature models. In most cases, its
performances are between the original models and
the full-parse HPSG feature models. The partial
parsing...
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Báo cáo khoa học: "A Deductive Approach to Dependency Parsing∗" potx
Ngày tải lên :
08/03/2014, 01:20
... representation of its underlying seman-
tics as a dependency parsing schema shows that this
parsing strategy is in fact conceptually simpler for
dependency parsing.
3.4 YM03 (Yamada and Matsumoto, 2003)
Yamada ... correctness.
1.1 Parsing schemata
Parsing schemata (Sikkel, 1997) provide a formal,
simple and uniform way to describe, analyze and
compare different constituency-based parsers.
The notion of a parsing ... Proc. of ASMICS Workshop on Parsing The-
ory. Milano, Italy, Oct 1994, pages 21–39.
Klaas Sikkel. 1997. Parsing Schemata — A Framework
for Specification and Analysis of Parsing Algorithms.
Texts...
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Báo cáo khoa học: "A Study on Convolution Kernels for Shallow Semantic Parsing" pdf
Ngày tải lên :
08/03/2014, 04:22
... even
if preliminary experiments on automatic seman-
tic shallow parsing of PropBank have shown no
important differences versus semantic parsing
which adopts Gold Standard parse-trees.
5 Conclusions
In ... for parsing and tagging: Kernels over
discrete structures, and the voted perceptron. In
proceeding of ACL-02.
Michael Collins. 1997. Three generative, lexicalized
models for statistical parsing. ... The results have shown that:
First, SVMs using the above kernels are ap-
pealing for semantically parsing both corpora.
Second, PAF and SCF can be used to improve
automatic classification of PropBank...
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Báo cáo khoa học: "A Bag of Useful Techniques for Efficient and Robust Parsing" ppt
Ngày tải lên :
08/03/2014, 06:20
... leads
to a speed-up in parsing time (and reduction of
space consumption) of more than an order of
magnitude when applied to a mature, well en-
gineered unification-based parsing system.
We have ...
Unification is the single most expensive oper-
ation performed in the course of parsing. Up
to 90% of the CPU time expended in parsing
a sentence using a large-scale unification based
grammar can go ...
fication is going to succeed. This makes it par-
ticularly well suited to chart-based parsing.
During parsing, each edge must be built with-
out modifying the edges that contribute to it....
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Báo cáo khoa học: "Shallow parsing on the basis of words only: A case study" pptx
Ngày tải lên :
08/03/2014, 07:20
... intermediate
POS-tagging step for parsing when a suffi-
cient amount of training material is avail-
able and word form information is used
for low-frequency words.
1 Introduction
It is common in parsing to assign ... a
first step towards grammatical relation assignment.
References
S. Abney. 1991. Parsing by chunks. In Principle-Based
Parsing, pages 257–278. Kluwer Academic Publish-
ers, Dordrecht.
D. W. Aha, D. ... Shallow parsing on the basis of words only: A case study
Antal van den Bosch and Sabine Buchholz
ILK / Computational...
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Báo cáo khoa học: "A Practical Comparison of Parsing Strategies" docx
Ngày tải lên :
08/03/2014, 18:20
... Dec. 1976.
Chester, 0°, "A Parsing Algorithm that Extends Phrases,"
AJCL 6 (2), April-June 1980, pp.87-g6.
Earley, J., "An Efficient Context-free Parsing
Algorithm," CACM ... form into an empirical science.
T~t is, our concern for parsing efficiency transcends
the issue of mere practicality. At slow-to-average
parsing rates, the cost of verifying linguistic theories ... to
exert a dominating effect in practical situations.
Arguments about relative efficlencles of parsing methods
based on idealized models such as inner-loop counters
similarly fail to account...
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Báo cáo khoa học: "A STOCHASTIC APPROACH TO SENTENCE PARSING" pptx
Ngày tải lên :
08/03/2014, 18:20
... English, Pron. FJCC, AFIPS, 1963
• Martln,W. , at. al. ,Preliminary Analysis of a
Breadth-First Parsing Algorithm: Theoretical and
Experimental Results, MIT LCS report TR-261, MIT
1981
• Sibuya,M. ...
Information System, BBN Report No. 2378, Bolt,
Berenek end Newman
19
A STOCHASTIC APPROACH TO SENTENCE PARSING
Tetsunosuke FuJisaki
Science Institute, IBM Japan, Ltd.
No. 36 Kowa Building
5-19 Sanbancho,Chiyoda-ku ... exposition of the method
with some preliminary results, whenused as a device
for disamblguatingparsing English texts picked from
natural corpus, will be given.
Z. INTRODUCTION
To prepare a...
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Báo cáo khoa học: "Constituent-Based Morphological Parsing: A New Approach to the Problem of Word-Recognition" pdf
Ngày tải lên :
08/03/2014, 18:20
... indeed, as we point out
below, we will ultimately want a left-to-right
parsing algorithm so that the phonological and
syntactic parsing can be interleaved. The
prosody of Warlpiri is simple in that ... which comes up in the
current implementation is that the ordering of
syntactic parsing after morphological parsing
fails to identify syntactically ill-formed words
as early as possible. To ... processes, but such an approach
to phonological processing is crucial for any
interface of current parsing systems with
speech recognition systems (Church, 1983).
The model has been implemented...
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- parsing a freeword order language
- a stochastic approach to sentence parsing
- a shiftreduce parsing technique
- a view of parsing
- a generic approach to parallel chart parsing
- a tabulationbased parsing method
- kbest spanning tree parsing
- a deductive approach to dependency parsing
- a polynomialtime parsing algorithm
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- điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1
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- phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ
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