domain adaptation of statistical parsers
Tài liệu Báo cáo khoa học: "Translation Model Adaptation for Statistical Machine Translation with Monolingual Topic Information" doc
Ngày tải lên :
19/02/2014, 19:20
... place of the
out -of -domain phrase table to test the system perfor-
mance. For the purpose of studying the generality of
our approach, we carry out comparative experiments
on two sizes of in -domain ... Effect of In -domain Monolingual Corpus
Size
Finally, we investigate the effect of in -domain
monolingual corpus size on translation quality. In
the experiment, we try different sizes of in -domain
documents ... distributions of
the additional in -domain monolingual corpora. As
compared to the previous works, our method takes
advantage of both the in -domain monolingual cor-
pora and the out -of -domain bilingual...
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Tài liệu Báo cáo khoa học: "Grammar Error Correction Using Pseudo-Error Sentences and Domain Adaptation" pdf
Ngày tải lên :
19/02/2014, 19:20
... the source
domain, and the real-error sentences are from
the target domain. Experiments show that sta-
ble improvement is achieved by using domain
adaptation.
1 Introduction
Case marks of a sentence ... value (real value) of the n-gram probability
of the output word sequence. One feature weight
is assigned. The n-gram language model can be
389
Proceedings of the 50th Annual Meeting of the Association ... classification
388
References
Hal Daume, III. 2007. Frustratingly easy domain adapta-
tion. In Proceedings of the 45th Annual Meeting of the
Association of Computational Linguistics (ACL 2007),
pages 256–263,...
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Tài liệu Báo cáo khoa học: "Semi-supervised Learning of Dependency Parsers using Generalized Expectation Criteria" ppt
Ngày tải lên :
20/02/2014, 07:20
... x.
By relating the sum of the scores of all possible
trees to counting the number of spanning trees in a
graph, it can be shown that Z
x
is the determinant
of the Kirchoff matrix K, which is ... marginal
probability of a particular edge k → i (i.e. y
i
=k),
the score of any edge k
→ i such that k
= k is
set to 0. The determinant of the resulting modi-
fied Kirchoff matrix K
k→i
is then the sum of ... basic
types of linguistic knowledge.
One simple form of linguistic knowledge is the
set of possible parent tags for a given child tag.
This type of constraint was used in the devel-
opment of a rule-based...
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Tài liệu Báo cáo khoa học: "Online Large-Margin Training of Dependency Parsers" docx
Ngày tải lên :
20/02/2014, 15:20
... of parent node in dependency tree. c-word: word of child
node. p-pos: POS of parent node. c-pos: POS of child node. p-pos+1: POS to the right of parent in sentence.
p-pos-1: POS to the left of ... parent of x
j
. T = {(x
t
, y
t
)}
T
t=1
denotes the
training data.
We follow the edge based factorization method of
Eisner (1996) and define the score of a dependency
tree as the sum of the score of ... dependency parsers that do
95
Proceedings of the 43rd Annual Meeting of the ACL, pages 91–98,
Ann Arbor, June 2005.
c
2005 Association for Computational Linguistics
Online Large-Margin Training of Dependency...
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Tài liệu Báo cáo khoa học: "An Information-Theory-Based Feature Type Analysis for the Modelling of Statistical Parsing" docx
Ngày tải lên :
20/02/2014, 18:20
... structural
position of the parsing tree, the predictive
information quantity of lexical feature type is
larger than that of part -of- speech feature type,
and the predictive information quantity of part-
of- speech ... quantities of lexical feature
types, part -of- speech feature types and
constituent label feature types
Goal
One of the most important variation in statistical
parsing over the last few years is that statistical
lexical ... In
Proceedings of the 34
th
Annual Meeting of the
ACL.
Michael John Collins. 1997. Three generative
lexicalised models for statistical parsing. In
Proceedings of the 35
th
Annual Meeting of the
ACL.
J.Eisner....
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Tài liệu Báo cáo khoa học: Domain IV of mouse laminin b1 and b2 chains Structure, glycosaminoglycan modi®cation and immunochemical analysis of tissue contents pptx
Ngày tải lên :
21/02/2014, 03:20
... rate of substitution of
recombinant perlecan domain V correlated well with a
comparable low rate of modi®cation of two tissue forms of
perlecan [44].
An extra cysteine (C3 at position 710) in domain ... coiled-coil domains I and II of laminins
[1,2], whereas o ther domains, such a s those composed of
Fig. 6. Immunohistochemical localization of laminin b2 chain in basement membranes of adult mouse ... Department of Cell Biology and Physiology,
Washington University School of Medicine, St Louis, MO, USA;
3
Center of Anatomy, Department of Histology, University
of Go
È
ttingen, Germany
Domain IV,...
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Tài liệu Báo cáo Y học: Exploring the role of a glycine cluster in cold adaptation of an alkaline phosphatase pdf
Ngày tải lên :
22/02/2014, 04:20
... more
active.
Determination of
E
a
and thermodynamic parameters
for wild-type and mutant enzymes
In order to elucidate the effect of mutations in terms of
psychrophilic adaptation, we determined the energy of
activation ... G261A/
Y269A designed on the basis of side-chain packing criteria
from a modelled structure of the enzyme resulted in restor-
ation of the energy of activation to the levels of the native
enzyme and in ... basis of
the model, the behavior of the G261A variant can be
interpreted in terms of constraints introduced by the Ala
side chain. The presence of the additional Gly at position
261 possibly offers...
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Báo cáo khoa học: The N-terminal region of the bacterial DNA polymerase PolC features a pair of domains, both distantly related to domain V of the DNA polymerase III s subunit ppt
Ngày tải lên :
05/03/2014, 23:20
... of the exonuclease and
polymerase domains of Bacillus subtilis DNA polymer-
ase III. Gene 111, 43–49.
15 Wieczorek A & McHenry CS (2006) The NH2-terminal
php domain of the alpha subunit of ... [12,16]. The very N-ter-
minal region of PolC and the C-terminal domain of
DnaE appear to be specific for each type of polymer-
ase. The small a ⁄ b C-terminal domain of DnaE has
been shown to be responsible ... the structure of the PolC
N-terminal region. We found that this region includes
two consecutive structural domains. Both domains are
distantly related to the structure of domain V of the
clamp...
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Báo cáo khoa học: Adaptation of intronic homing endonuclease for successful horizontal transmission pptx
Ngày tải lên :
07/03/2014, 17:20
... which contained
0.5 lg of linearized pCOB1.8Kb and 1.0 lg of I-CsmI(217),
or 1.5 lg of I-CsmI(200) or I-CsmI(237). One of the param-
eters [i.e. pH, NaCl concentration, species of divalent cati-
ons ... concentration of
Mg
2+
was progressively detrimental to all I-CsmI
polypeptides. The presence of Mg
2+
was essential for
the endonuclease activity as a cofactor, while the same
concentration of Mn
2+
(5 ... with
5mm of Zn
2+
,Ca
2+
,orCo
2+
(data not shown).
Kinetic parameters of I-CsmI(200)
We determined the kinetic parameters of I-CsmI(200)
based on the data obtained by time course monitoring
of the...
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Báo cáo khoa học: "Task-oriented Evaluation of Syntactic Parsers and Their Representations" potx
Ngày tải lên :
08/03/2014, 01:20
... the pos-
sibility of domain adaptation, and the portability of
the training methods of the parsers. Since the parsers
listed in Section 2 have programs for the training
10
Some of the parser packages ... the domain of our target text is different from
WSJ, our experiments also highlight the domain
portability of parsers. We run two versions of each
parser in order to investigate the two types of ... accuracy improve-
ments vary when parsers are retrained with domain-
specific data, indicating the importance of domain
adaptation and the differences in the portability of
parser training methods.
Although...
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Báo cáo khoa học: "Estimating Class Priors in Domain Adaptation for Word Sense Disambiguation" pdf
Ngày tải lên :
08/03/2014, 02:21
... corpus depend
on the domain from which the corpus is drawn.
A change of predominant sense is often indicative
of a change in domain, as different corpora drawn
from different domains usually give ... @comp.nus.edu.sg
Abstract
Instances of a word drawn from different
domains may have different sense priors
(the proportions of the different senses of
a word). This in turn affects the accuracy
of word sense disambiguation ... empirical study of the domain dependence
of supervised word sense disambiguation systems.
In Proc. of EMNLP/VLC00.
Adam Kilgarriff. 2001. English lexical sample task
description. In Proc. of SENSEVAL-2.
Yoong...
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Báo cáo khoa học: "Domain Adaptation with Active Learning for Word Sense Disambiguation" pdf
Ngày tải lên :
08/03/2014, 02:21
... change of predominant
sense is often indicative of a change in domain. For
example, the predominant sense of the noun interest
in the BC part of the DSO corpus has the meaning
“a sense of concern ... importance of the issue
of domain dependence of WSD systems, but did not
propose methods such as active learning or count-
merging to address the specific problem of how to
perform domain adaptation ... Henceforth, out -of -domain data will re-
fer to BC examples, and in -domain data will refer to
WSJ examples.
2.2 Choice of Nouns
The WordNet Domains resource (Magnini and
Cavaglia, 2000) assigns domain...
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Báo cáo khoa học: "Biographies, Bollywood, Boom-boxes and Blenders: Domain Adaptation for Sentiment Classification" potx
Ngày tải lên :
08/03/2014, 02:21
... great deal of at-
tention. Its application to many different domains
of discourse makes it an ideal candidate for domain
adaptation. This work addressed two important
questions of domain adaptation. ... same type of data as the
polarity dataset.
We also note the work of Aue and Gamon (2005),
who performed a number of empirical tests on do-
main adaptation of sentiment classifiers. Most of
these ... train-
ing set of one domain and tested on the test set of
a possibly different domain. The baseline is a lin-
ear classifier trained without adaptation, while the
gold standard is an in -domain classifier...
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Báo cáo khoa học: "Deep dependencies from context-free statistical parsers: correcting the surface dependency approximation" pptx
Ngày tải lên :
08/03/2014, 04:22
... used for this study consist of the Wall
Street Journal section of the Penn Treebank of En-
glish (WSJ) and the context-free version of the
NEGRA (version 2) corpus of German (Skut et al.,
1997b). ... from
presentation at the Institute of Cognitive Science,
University of Colorado at Boulder. The au-
thors are also grateful to Dan Klein and Jenny
Finkel for use of maximum-entropy software they
wrote. This ... type consists of a dislo-
cated element coindexed with an origin site of se-
mantic interpretation, as in the association in Fig-
ure 1 of WHNP-1 with the direct object position
of sees (a relativization),...
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