kernels on linguistic structures for answer extraction
Tài liệu Báo cáo khoa học: "Kernels on Linguistic Structures for Answer Extraction" doc
Ngày tải lên :
20/02/2014, 09:20
... Papers (Companion Volume), pages 113–116,
Columbus, Ohio, USA, June 2008.
c
2008 Association for Computational Linguistics
Kernels on Linguistic Structures for Answer Extraction
Alessandro Moschitti ... semantic
kernels for question /answer classification. In ACL’07.
A. Moschitti. 2006. Efficient convolution kernels
for dependency and constituent syntactic trees. In
ECML’06.
S. Quarteroni and S. ... questions and answers. This is the reason
why our kernels on linguistic structures improve it
by 63%, which is a remarkable result for an IR task
(Allan, 2000).
2 Kernels for Q/A Classification
The design...
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Báo cáo khoa học: "Exploring Correlation of Dependency Relation Paths for Answer Extraction" doc
Ngày tải lên :
08/03/2014, 02:21
... July 2006.
c
2006 Association for Computational Linguistics
Exploring Correlation of Dependency Relation Paths
for Answer Extraction
Dan Shen
Department of Computational Linguistics
Saarland University
Saarbruecken, ... sentences have a strong im-
pact on answer extraction. It is meaningless to
evaluate the questions of which none candidate
sentences contain proper answer in answer extrac-
tion experiment. To ... correlation of
dependency relation paths to rank candi-
date answers in answer extraction. Using
the correlation measure, we compare de-
pendency relations of a candidate answer
and mapped question...
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Báo cáo khoa học: "Using Predicate-Argument Structures for Information Extraction" ppt
Ngày tải lên :
08/03/2014, 04:22
... Silja
Huttunen, 2000. Automatic Acquisition of Domain Knowl-
edge for Information Extraction. In Proceedings of the
18th International Conference on Computational Linguistics
(COLING-2000): 940-946, ... limited. In contrast, the decision tree approach
uses predicate lexical information only for 5% of the
branching decisions recorded when testing the role
assignment task, and only for 0.01% of ... also be considered. Based on these
observations, we introduced in FS2 the CONTENT
WORD (cw), which adds a new lexicalization from
the argument constituent for better content repre-
sentation. To...
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Báo cáo khoa học: "Experiments on Candidate Data for Collocation Extraction" pot
Ngày tải lên :
08/03/2014, 21:20
... Further tests confirmed
that the evaluation results depend only minimally
on the exact size of the extraction window.
We have evaluated all six combinations of pre-
processing and extraction methods. ...
precision
4
and
recall
5
for
all combinations of pre-processing and extraction
methods. On the hand-corrected tagging, adja-
cent pairs yield the highest precision, but recall is
much better for ... 1990. Word
association norms, mutual information, and lexicog-
raphy.
Computational Linguistics,
16(1):22-29.
Beatrice Daille. 1994.
Approche mixte pour
l&apos ;extraction automatique de terminologie...
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Tài liệu Báo cáo khoa học: "Composite Kernels For Relation Extraction" pdf
Ngày tải lên :
20/02/2014, 09:20
... combine two kernels. The fourth sec-
tion details the experiments on a public benchmark
dataset. We close with a summary and conclu-
sions.
2 Kernels for Relation Extraction
Relation extraction aims ... 1 shows F-values for three selected rela-
tions and micro-averaged results for all 5 relations
on the training and test set. In addition the F-
scores for the three relations containing the most
instances ... known
tree kernel approaches alone suggesting
that both types of trees contain comple-
mentary information for relation extrac-
tion.
1 Introduction
The same semantic relation between entities in
natural...
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Tài liệu Báo cáo khoa học: "Answer Extraction, Semantic Clustering, and Extractive Summarization for Clinical Question Answering" pdf
Ngày tải lên :
20/02/2014, 12:20
... International Conference on Computational Linguistics and 44th Annual Meeting of the ACL, pages 841–848,
Sydney, July 2006.
c
2006 Association for Computational Linguistics
Answer Extraction, Semantic ... focuses on MEDLINE abstracts as the
source for answers.
3 Question Answering Approach
Conflicting desiderata shape the characteristics of
“answers” to clinical questions. On the one hand,
conciseness ... of
clinical medicine, lies at the intersection of ques-
tion answering, information retrieval, and summa-
rization. We employ answer extraction to identify
short answers, semantic clustering to group...
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Báo cáo khoa học: "Dependency Tree Kernels for Relation Extraction" pot
Ngày tải lên :
17/03/2014, 06:20
... for entity and relation recognition. In
19th International Conference on Computational
Linguistics.
Sam Scott and Stan Matwin. 1999. Feature engi-
neering for text classification. In Proceedings ... Richardella. 2003.
Kernel methods for relation extraction. Jour-
nal of Machine Learning Research, pages 1083–
1106.
Dependency Tree Kernels for Relation Extraction
Aron Culotta
University of Massachusetts
Amherst, ... in-
duction and selection (Scott and Matwin, 1999).
For example, in entity detection the original in-
stance representation is generally a word vector cor-
responding to a sentence. Feature extraction...
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Báo cáo khóa học: Hydrolytic cleavage by a group I intron ribozyme is dependent on RNA structures not important for splicing pot
Ngày tải lên :
23/03/2014, 12:20
... biochemical characterizations of the L9.2
mutants were performed, including hydrolysis at different
mono- and divalent cation concentrations. The corres-
ponding 5Â-truncation constructs were analyzed ... in B
(hydrolysis conditions), and subsequent determination of corres-
ponding rate constants (k
obs
). See legends to Fig. 2 for abbreviations
and experimental conditions.
Fig. 6. The effect of ... schematically
presented in Fig. 5B at hydrolysis conditions with different magnesium
concentrations, but at 0 m
M
KCl. See legends to Fig. 2 for abbrevia-
tions and experimental conditions.
1022 P. Haugen et al. (Eur....
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Báo cáo khoa học: " New Ranking Algorithms for Parsing and Tagging: Kernels over Discrete Structures, and the Voted Perceptron" docx
Ngày tải lên :
23/03/2014, 20:20
... (2001). Convolution Kernels for Nat-
ural Language. In Proceedings of Neural Information Pro-
cessing Systems (NIPS 14).
Collins, M. (2002a). Ranking Algorithms for Named–Entity
Extraction: Boosting ... representation, but using very
different algorithms and parameter estimation meth-
ods from the perceptron algorithms in this paper (see
section 7 for more discussion).
6.2 Named–Entity Extraction
Over ... many
possibilities for . An obvious example for parse
trees is to have one component of for each
rule in a context-free grammar that underlies the
trees. This is the representation used by Stochastic
Context-Free...
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Structures for writing task 1 in IELTS
Ngày tải lên :
04/10/2012, 09:39
... For describing the lowest point
The number of students hit a trough/plunged to a trough of. 2000
For describing a fluctuation
The number fluctuated between ...
The number fluctuated between 1 and 3
The number fluctuated wildly around 1 and 4
Some words for describing “approximately”
About/around/approximately/well over/roughly
...
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A study on the techniques for the improvement to the teaching of oral skills in light of communicative english language teaching for junior high school teachers in quang ngai province part 1
Ngày tải lên :
07/11/2012, 14:41
... how often?
Once a week once a month once a semester once a year
7. Please list the favorable conditions for teaching English:
8. Please list the unfavorable conditions for teaching ...
presentation before asking students to repeat sentences. The teacher should predict
beforehand what pronunciation problems the students will have and pay attention to their
own pronunciation during ... guiding questions on the board: one guiding question for each main
point in the listening text. Students think about the guiding questions.
After the first listening they answer the questions.
27
...
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A study on the techniques for the improvement to the teaching of oral skills in light of communicative english language teaching for junior high school teachers in quang ngai province part 3
Ngày tải lên :
07/11/2012, 14:41
... Techniques for correcting students’spoken errors 32
3.3.1. Introduction 32
3.3.2. Correction Techniques 34
3.3.3. Summary 36
Part 3: Conclusion
1. Recapitulation 37
2. Limitations and suggestions for ... 2.6.2. Findings and discussion 9
2.6.2.1. Teachers Personal Information 9
ã Age of teachers 9
ã Teaching experience and training 9
ã Qualifications 10
2.6.2.2. Information about Schools 10
ã Access ... to resource at school 10
ã Conditions that facilitate teaching 10
ã Conditions that impede teaching 11
2.6.2.3. Students' Attitude 11
ã Students' need for English 11
ã Students'...
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A study on the opportunities for and constraints on developing students’ oral skills at an upper-secondary school
Ngày tải lên :
07/11/2012, 14:44
... The class observations were
carried out in 3 stages: before the lesson, during the lesson and after the lesson.
In before-lesson stage, the researcher focused on making contacts with the teacher ... solution to these problems.
3.4. Conclusion
As mentioned in this chapter, the researcher has collected information for the study
from the three sources and discussed the results of the questionnaires, ... participation in communicative activities as
well as to find out solutions to the problems.
1.3.3. Constraints on learning to speak a foreign language
Constraints on learning to speak a foreign...
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A parallel implementation on modern hardware for geo-electrical tomographical software
Ngày tải lên :
23/11/2012, 15:03
... important questions must be answered:
1. Does the solution exist?
2. Is it unique?
3. Is it stable?
30
computation operations so it is best to keep the processing on the GPU for as long as
possible ... OpenMP
specification came out in 1997 with support for Fortran, followed by C/C++ support in
1998. Version 2.0 was released in 2000 for Fortran and 2002 for C/C++. Version 3.0
was released ...
common electrode arrays. A few electrode configurations are shown on Figure 19.
Figure 19 Example surface electrode configurations [11].
Different arrays have different depth of investigation,...
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