jointly optimizing a twostep conditional random field model
Optimizing a Site for Google
Ngày tải lên :
24/10/2013, 08:20
... what to avoid:
ߜ The spam approach. Avoid companies that contact you in a spammy
way. Nearly everyone owning a domain has received a truckload of
e-mail from companies claiming that they’ve already ... stories
Yahoo!, eBay, Amazon, and Google, whose domain names (and company
names) have little contextual meaning. If you own technology or a business
model as groundbreaking and earth-shaking as each ... terrific program, but it’s
a separate marketing campaign than basic site optimization. Certain
online marketing companies specialize in consulting or operating
AdWords campaigns, and they are discussed...
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Tài liệu Activity 6.2: Optimizing a Physical Data Design pptx
Ngày tải lên :
17/01/2014, 09:20
... Solutions may include:
Replicate the database on the local client computer using MSDE,
and then upload the new information to the main SQL Server
database daily.
Create a separate database and table ... timesheets are queried by last name to run several reports and
queries. This situation has been identified as a performance problem by the
database administrators, and they are requesting a fix as ... that
only accept timesheet data. Replicate this data to the main database
as needed.
5. Management must be able to run reports even if the rest of the system is
unavailable.
Solutions can...
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Tài liệu Module 6: Monitoring and Optimizing a Web Server pptx
Ngày tải lên :
24/01/2014, 10:20
... static variations for a single dynamically-generated page. If
you are generating pages dynamically to provide frequently updated data,
consider redesigning your application so that it generates ... high. A
value from 0 through 20 is preferred. A value greater than 80
indicates insufficient random access memory (RAM).
Memory: Available
Bytes
The amount of physical memory available to ... (HTML) pages, or Web
applications, have much higher overhead than static HTML pages, their
performance has a significant impact on Web server capacity. By monitoring
applications and estimating...
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Tài liệu Báo cáo khoa học: Synchronization of Ca2+ oscillations: a capacitative (AC) electrical coupling model in neuroepithelium pptx
Ngày tải lên :
16/02/2014, 09:20
... capacitative (AC)
electrical coupling model in neuroepithelium
Masayuki Yamashita
Department of Physiology I, Nara Medical University, Kashihara, Japan
Structural organization of intracellular
Ca
2+
stores ... nucleoplasm.
Capacitative electrical coupling of Ca
2+
release M. Yamashita
294 FEBS Journal 277 (2010) 293–299 ª 2009 The Author Journal compilation ª 2009 FEBS
22 Ueno M, Katayama K, Yamauchi H, Nakayama ... Yamashita, Department of Physiology I,
Nara Medical University, Shijo-cho 840,
Kashihara 634-8521, Japan
Fax: +81 744 29 0306
Tel: +81 744 29 8827
E-mail: yama@naramed-u.ac.jp
(Received 23 March...
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Tài liệu Báo cáo khoa học: "Conditional Random Fields for Word Hyphenation" docx
Ngày tải lên :
20/02/2014, 04:20
... models that are discrimi-
native, that are trained on as large a dataset as pos-
sible, and that have a very large number of param-
eters but are regularized (Halevy et al., 2009).
When evaluating ... above.
3 Conditional random fields
A linear-chain conditional random field (Lafferty
et al., 2001) is a way to use a log-linear model
for the sequence prediction task. We use the bar
notation for ... the dataset us-
ing PATGEN, and then hyphenate the remaining
10% of the dataset using Liang’s algorithm and the
learned pattern file.
The PATGEN tool has many user-settable pa-
rameters. As is...
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Tài liệu Báo cáo khoa học: "Generalized Expectation Criteria for Semi-Supervised Learning of Conditional Random Fields" pdf
Ngày tải lên :
20/02/2014, 09:20
... Smith and J. Eisner. 2005. Contrastive estimation:
Training log-linear models on unlabeled data. In ACL.
Martin Szummer and Tommi Jaakkola. 2002. Partially
labeled classification with markov random ... and
T. Darrell. 2007. Hidden-state conditional random
fields. In PAMI.
H. Raghavan, O. Madani, and R. Jones. 2006. Active
learning with feedback on both features and instances.
JMLR.
R. Salakhutdinov, ... accuracy with
the addition of lower cost unlabeled data. Tradi-
tional approaches to semi-supervised learning are
applied to cases in which there is a small amount of
fully labeled data and a...
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- 492
- 1
Tài liệu Báo cáo khoa học: "A Succinct N-gram Language Model" ppt
Ngày tải lên :
20/02/2014, 09:20
... com-
pression tasks achieved a significant com-
pression rate without any loss.
1 Introduction
There has been an increase in available N -gram
data and a large amount of web-scaled N-gram
data has been ... Communication Science Laboratories
2-4 Hikaridai Seika-cho Soraku-gun Kyoto 619-0237 Japan
{taro,tsukada,isozaki}@cslab.kecl.ntt.co.jp
Abstract
Efficient processing of tera-scale text data
is an important ... the ACL-IJCNLP 2009 Conference Short Papers, pages 341–344,
Suntec, Singapore, 4 August 2009.
c
2009 ACL and AFNLP
A Succinct N-gram Language Model
Taro Watanabe Hajime Tsukada Hideki Isozaki
NTT...
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Tài liệu Báo cáo khoa học: "Discriminative Word Alignment with Conditional Random Fields" ppt
Ngày tải lên :
20/02/2014, 11:21
... value and the Model 1
translation probability as real-valued features for
each candidate pair, as well as a normalised score
67
criminative model on a corpus of ten thousand
word aligned Arabic-English ... Statistical phrase-
based translation. In Proceedings of HLT-NAACL, pages
81–88, Edmonton, Alberta.
J. Lafferty, A. McCallum, and F. Pereira. 2001. Conditional
random fields: Probabilistic models for ... is
a strong alignment candidate. The sum of these
scores is also used as a feature. Each source word
and POS tag pair are used as indicator features
which allow the model to learn particular...
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Tài liệu Báo cáo khoa học: "Improving the Scalability of Semi-Markov Conditional Random Fields for Named Entity Recognition" pdf
Ngày tải lên :
20/02/2014, 12:20
... a feature. All the
feature functions are real-valued and can use adja-
cent label information.
Semi-CRFs are actually a restricted version of
order-L CRFs in which all the labels in a chunk are
the ... apply
semi-CRFs to Named Entity Recognition
tasks with a tractable computational cost.
Our framework can handle an NER task
that has long named entities and many
labels which increase the computational
cost. ... 2006.
c
2006 Association for Computational Linguistics
Improving the Scalability of Semi-Markov Conditional
Random Fields for Named Entity Recognition
Daisuke Okanohara† Yusuke Miyao† Yoshimasa Tsuruoka...
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Tài liệu Báo cáo khoa học: "A Discriminative Syntactic Word Order Model for Machine Translation" pdf
Ngày tải lên :
20/02/2014, 12:20
... translation, we develop a discriminative or-
der model. An advantage of such a model is that we
can easily combine different kinds of features (such
as syntax-based and surface-based), and that ... Distortion models for
statistical machine translation. In ACL.
D. Chiang. 2005. A hierarchical phrase-based model for statis-
tical machine translation. In ACL.
M. Collins. 2000. Discriminative reranking ... inference and train-
ing of context-rich syntactic translation models. In ACL.
P. Koehn. 2004. Pharaoh: A beam search decoder for phrase-
based statistical machine translation models. In AMTA.
R....
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Báo cáo khoa học: "Efficient, Feature-based, Conditional Random Field Parsing" potx
Ngày tải lên :
08/03/2014, 01:20
... Dis-
criminative log-linear grammars with latent variables.
In NIPS.
Adwait Ratnaparkhi. 1997. A linear observed time sta-
tistical parser based on maximum entropy models. In
EMNLP 2, pages 1–10.
Andreas ... in
discriminative parsing. In ACL 44, pages 873–880.
Joseph Turian, Ben Wellington, and I. Dan Melamed.
2007. Scalable discriminative learning for natural lan-
guage parsing and translation. In Advances ... Petrov, Leon Barrett, Romain Thibaux, and Dan
Klein. 2006. Learning accurate, compact, and in-
terpretable tree annotation. In ACL 44/COLING 21,
pages 433–440.
Slav Petrov, Adam Pauls, and Dan Klein....
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Báo cáo khoa học: "Techniques to incorporate the benefits of a Hierarchy in a modified hidden Markov model" pptx
Ngày tải lên :
08/03/2014, 02:21
... is part of the Lancaster Treebank corpus
and contains 1473 sentences. Each sentence con-
tains hand-labeled syntactic roles for natural lan-
guage text.
A. 200
A. 400
A. 600
A. 800
A. 1000
A. 1200
A. 1400
0.86
0.88
0.90
0.92
0.94
B.200
B.400
B.600
B.800
B.1000
B.1200
B.1400
0.86
0.88
0.90
0.92
0.94
0.86
0.88
0.90
0.92
0.94
F
C.200
C.400
C.600
C.800
C.1000
C.1200
C.1400
0.86
0.88
0.90
0.92
0.94
0.86
0.88
0.90
0.92
0.94
F
Figure ... different model on the Lan-
caster Treebank data set. The models used in this
evaluation were trained with observation data from
the Lancaster Treebank training set. The training
set and testing set are ... modified hidden
Markov model
Lin-Yi Chou
University of Waikato
Hamilton
New Zealand
lc55@cs.waikato.ac.nz
Abstract
This paper explores techniques to take ad-
vantage of the fundamental difference...
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Báo cáo khoa học: "A Flexible Stand-Off Data Model with Query Language for Multi-Level Annotation" ppt
Ngày tải lên :
08/03/2014, 04:22
... nominal
attributes can have one of a (user-defined) closed set
of possible values. The data model also supports
associative relations between markables: Markable
set relations associate arbitrarily many markables
with ... with a capital letter.
Markables are the carriers of the actual annota-
tion information. They can be queried by means
of string matching and by means of attribute-value
combinations. A markable ... in a separate file. If these principles are
observed, annotation data management (incl. level
addition, removal and replacement, but also conver-
sion into and from other formats) is greatly facili-
tated.
The...
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Báo cáo khoa học: "Using Conditional Random Fields to Predict Pitch Accents in Conversational Speech" pptx
Ngày tải lên :
08/03/2014, 04:22
... (6)
Rather than using mutual information as a measure
of collocational strength, we used unigram, bigram
and joint probabilities. A model that includes both
joint probability and the unigram probabilities ... Computational Linguistics.
J. Lafferty, A. McCallum, and F. Pereira. 2001.
Conditional random fields: Probabilistic models
for segmenting and labeling sequence data. In
Proc. of 18th International ... phonological
variables, which capture aspects of rhythm and tim-
ing that affect accentuation.
4.1 Syntactic variables
The only syntactic category we used was a four-
way classification for hand-generated part of speech
(POS):...
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