supervised complex question answering
Tài liệu Báo cáo khoa học: "A Graph-based Semi-Supervised Learning for Question-Answering" doc
Ngày tải lên :
20/02/2014, 07:20
... semi -supervised
learning for the question- answering (QA)
task for ranking candidate sentences. Us-
ing textual entailment analysis, we obtain
entailment scores between a natural lan-
guage question ... tex-
tual entailment analysis.
Question- Type Classifier (QC): QC is the task
of identifying the type of a given question among
a predefined set of question types. The type of
a question is used as a clue ... methods.
line represents a converted question, in order to
extract the question- type feature, we use a match-
ing NER-type between the headline and candidate
sentence to set question- type NER match feature.
We...
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Tài liệu Báo cáo khoa học: "You’ve Got Answers: Towards Personalized Models for Predicting Success in Community Question Answering" doc
Ngày tải lên :
20/02/2014, 09:20
... rating
”want in” answer ”in the” in question CA avg asker rating
”adenocarcinoma” in question CA History “anybody” in question
”was” in question ”who is” in question Q content typo density
”live” ... exist to automat-
ically answer open domain, complex, and subjective
questions. Hence, this paper contributes to both the
understanding of complex question answering, and
explores evaluation issues ... Figure 1.
• Question Features: Traditional question answer-
ing features such as the wh-type of the question
(e.g., “what” or “where”), and whether the ques-
tion is similar to other questions...
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Tài liệu Báo cáo khoa học: "The QuALiM Question Answering Demo: Supplementing Answers with Paragraphs drawn from Wikipedia" ppt
Ngày tải lên :
20/02/2014, 09:20
... time. The complexity and length of
a query on the other hand has very little impact on
speed.
The type of question influences the query building
process in a fundamental manner. For the question
“When ... for differ-
ent type of questions, increases or decreases con-
stituents’ weights in either the Headers or the Text
field.
Additionally, during question analysis, certain
question constituents are ... a
user’s search experience.
1 Introduction
This paper describes the online demo of
the QuALiM
1
Question Answering system
(http://demos.inf.ed.ac.uk:8080/qualim/). We
will refrain from describing...
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Tài liệu Báo cáo khoa học: "Opinion and Generic Question Answering Systems: a Performance Analysis" ppt
Ngày tải lên :
20/02/2014, 09:20
... list of 20 questions
for each language. Finally, we produced the Gold
Standard, by labeling the corpus with the correct
answers corresponding to the questions.
1.1 Questions
No TYPE QUESTION ...
containing NEs of the question Expected Answer
Type (EAT). Table 2 presents the results ob-
tained for English and Table 3 for Spanish. We
indicate the id of the question (Q), the question
type (T) ... annotate it or wrongfully an-
notated words as being NEs. Not of less impor-
tance is the question duality aspect in question
17. Bush is commented in more than 600 sen-
tences; therefore, when polarity...
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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
... ex-
traction for clinical question answering: Preliminary
results. In AAAI 2005 Workshop on QA in Restricted
Domains.
D. Demner-Fushman and J. Lin. 2006, in press. An-
swering clinical questions with knowledge-based
and ... and Teach EBM.
Churchill Livingstone, second edition.
E. Voorhees. 2005. Using question series to eval-
uate question answering system effectiveness. In
HLT/EMNLP 2005.
Y. Zhao and G. Karypis. 2002. ... hybrid approach
to question answering in the clinical
domain that combines techniques from
summarization and information retrieval.
We tackle a frequently-occurring class of
questions that takes...
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Tài liệu Báo cáo khoa học: "Organizing Encyclopedic Knowledge based on the Web and its Application to Question Answering" ppt
Ngày tải lên :
20/02/2014, 18:20
... for generat-
ing encyclopedias is of operational quality.
5.3 Evaluating Question Answering
We used as test inputs 40 questions, which are related
to technical terms collected from the Class ... domains (and consequently word senses).
In addition, we proposed a question answering sys-
tem, which answers interrogative questions associated
with what, by using a Web-based encyclopedia as ... of
operational quality and quantity.
We also used test questions from the Class II exam-
ination, and evaluated the Web-based encyclopedia in
terms of question answering. We found that our Web-
based encyclopedia...
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Tài liệu Báo cáo khoa học: "A Terminological Simplification Transformation for Natural Language Question-Answering Systems" doc
Ngày tải lên :
21/02/2014, 20:20
... Scha, W.J, Schoenmakers and
E.P.C. van Utteren.
The Question Answering System PHLIQA1.
In L. Bolc (editor), Natural Language Question
Answering Systems. Macmillan, 1980.
[8] Scha, Remko J.H. ... mapping is a component of such
question- answering systems as TEAM [4], PHLIQA1 [7]
and IRUS [1]. As an example of difficulties which may
be encountered, consider the question "Was the
patient's ... particular
boolean field which encodes for each patient whether
or not this complex property is true. Any variation on
this question which a compositional semantics might
also
handle, such as "Was...
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Tài liệu Báo cáo khoa học: "Question Answering by Lexical Fabric and External Resources" ppt
Ngày tải lên :
22/02/2014, 02:20
... knowledge and external resources for
TREC-style question answering. In particular, we
describe a high performance question answering
system called
QUALIFIER (QUestion Answer-
ing by Lexical Fabric and ... and its Applicability to
Question Answering.
In Proceedings of the ACL
2001 Conference, July 2001.
M. A. Pasca and S. M. Harabagiu. 2001.
High per-
formance question/ answering.
In Proceedings ... 2002.
Probabilistic question
answering from the web.
In The Eleventh Interna-
tional World Wide Web Conference,2002.
E.M.Voorhees. 2002.
Overview of the TREC 2001
Question Answering Track.
In...
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Báo cáo khoa học: "Sentence Dependency Tagging in Online Question Answering Forums" pdf
Ngày tải lên :
07/03/2014, 18:20
... post. Only identifying question and
answering sentences from the thread is not enough
for automatic question answering. For this example,
in order to get the complete question, we would need
to ... online forums.
1 Introduction
Automatic Question Answering (QA) systems rely
heavily on good sources of data that contain ques-
tions and answers. Question answering forums, such
as technical support ... Example of a Question Answering Thread in
Ubuntu Support Forum
exists as a result of another sentence. For example,
question context sentences exist because of the ques-
tion itself; an answering...
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Báo cáo khoa học: "Question Answering with Lexical Chains Propagating Verb Arguments" pptx
Ngày tải lên :
08/03/2014, 02:21
... factoid questions in TREC 2004 has
230 questions. Lexical chains containing the re-
stricted set of relations that propagate verb argu-
ments were found for 33 questions, linking verbs
in those questions ... Lexical
chains for question answering. In Proceedings of
COLING 2002, pages 674–680.
Dan I. Moldovan and Vasile Rus. 2001. Logic Form
Transformation of WordNet and its Applicability to
Question Answering. ... system performance by 2.4%.
1 Introduction
In Question Answering the correct answer can be
formulated with different but related words than
the question. Connecting the words in the ques-
tion...
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Báo cáo khoa học: "Methods for Using Textual Entailment in Open-Domain Question Answering" doc
Ngày tải lên :
08/03/2014, 02:21
... Paragraphs
Question
Documents
Answers
Answers−M1
Answers−M2
Answers−M3
QUESTION ANSWERING SYSTEM
Figure 1: Integrating Textual Entailment in Q/A.
lows. Section 2 describes the three methods of
using textual entailment in open-domain question
answering ... by
the original question, the answer passage associ-
ated with the top-ranked entailed question was re-
turned as the answer. When none of the top 50
AGQs were entailed by the question, question-
answer ... 1
TEXTUAL
ENTAILMENT
Method 2
List of Questions
Generation
AUTO−QUAB
Ranked List of Paragraphs
TEXTUAL
ENTAILMENT
Method 3
Entailed Questions
Entailed Paragraphs
List of Entailed Paragraphs
Question
Documents
Answers
Answers−M1
Answers−M2
Answers−M3
QUESTION...
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Báo cáo khoa học: "Experiments with Interactive Question-Answering" doc
Ngày tải lên :
08/03/2014, 04:22
... Dialogue
Question
Answer
Decomposition
Question
Information
Extraction
Representation
Off−line Question Answering
Database (QUAB)
Question Answer
Figure 1: FERRET - A Predictive Interactive Question- Answering Architecture.
model, ... the
original question and the predicted questions.
The selection of the questions from the QUABs
that are proposed for each user question is based on
a similarity-metric that ranks the QUAB questions.
To ... similarity between the user
question
and the QUAB
question
to be defined
as , where
Similarity Metric 4 is based on the question
type similarity. Instead of using the question
class, determined...
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Báo cáo khoa học: "Question Answering as Question-Biased Term Extraction: A New Approach toward Multilingual QA" doc
Ngày tải lên :
08/03/2014, 04:22
... Introduction
The conventional Question Answering (QA) archi-
tecture is a cascade of the following building blocks:
Question Analyzer analyzes a question sentence
and identifies the question types (or answer
types).
Document ... Japan
yutaka.sasaki@atr.jp
Abstract
This paper regards Question Answering
(QA) as Question- Biased Term Extraction
(QBTE). This new QBTE approach lib-
erates QA systems from the heavy bur-
den imposed by question types (or answer
types). ... 10,000 pairs
of question and answers. You have to manually clas-
sify the questions according to your own question-
type system. In addition, you have to annotate the
tags of the question types...
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Báo cáo khoa học: "Offline Strategies for Online Question Answering: Answering Questions Before They Are Asked" ppt
Ngày tải lên :
08/03/2014, 04:22
... efficiently
answer questions. We evaluate our
strategy on a challenging subset of
questions, i.e. “Who is …” questions,
against a state of the art web-based
Question Answering system. Results ... look-up method’s answer is counted as
incorrect.
Offline Strategies for Online Question Answering:
Answering Questions Before They Are Asked
Michael Fleischman, Eduard Hovy,
Abdessamad ... concept, and instance.
5
Question Answering Evaluation
A large number of questions were collected over
the period of a few months from
www.askJeeves.com. 100 questions of the form
“Who...
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Báo cáo khoa học: "A Noisy-Channel Approach to Question Answering" docx
Ngày tải lên :
08/03/2014, 04:22
... that are trained on question- answer
corpora. From this perspective then, the
fundamental problem of question answering is that
of finding spaces where the distance between
questions and sentences ... into
questions.
4.2 Test Data
We used two different data sets for the purpose of
testing. The first set consists of the 500 questions
used at TREC 2002; the second set consists of 500
questions ... databases were
proved to be very useful for question- answering
systems. Lin (2002) showed through his federated
approach that 47% of TREC-2001 questions could
be answered using Web-based...
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