extraction of entailed semantic relations
Báo cáo khoa học: "Learning Arguments and Supertypes of Semantic Relations using Recursive Patterns" doc
Ngày tải lên :
07/03/2014, 22:20
... the ar-
guments and the supertypes of a diverse
set of semantic relations from the Web.
We evaluate the performance of our algo-
rithm on multiple semantic relations ex-
pressed using “verb”, ... selectional restrictions of a large class of
semantic relations. The principal contribution of
the paper is to demonstrate that this kind of pat-
tern can be applied to almost any kind of se-
mantic relation, ... “dress” relations. Although both
relations differ in terms of the total number of it-
erations and harvested items, the overall behavior
of the learning curves is similar. Learning starts
of very...
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Tài liệu Custom, Power and the Power of Rules International Relations and Customary International Law doc
Ngày tải lên :
19/02/2014, 06:20
... part either of rules or of the processes of rule
creation.
22
When Franck discussed rule creation he did so using modified versions
of Hart’s concepts of secondary rules and rules of recognition.
23
According ... of international law, as
embodied in the Charter and in decisions of the International Court, to
regulate the use of force and the assertions of certain most powerful
States, and of certain of ... has
changed profoundly in recent years, not only as a result of the end of the
Cold War, the disintegration of the Soviet Union and the demise of most
command economies. The earlier process of decolonisation,...
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Tài liệu Báo cáo khoa học: "Cross-Domain Co-Extraction of Sentiment and Topic Lexicons" pdf
Ngày tải lên :
19/02/2014, 19:20
... values of r in the “product
vs. movie” task. Observe that for sentiment word
extraction, the results of the proposed methods are
not sensitive to the values of r. While for the topic
word extraction, ... study
the effect of different parameter settings. There are
several parameters in the framework: the number
of generated seeds r, the number of new candidates
k
2
and the number of selections k ... and Ryan McDonald. 2008. A joint model of
text and aspect ratings for sentiment summarization.
In Proceedings of the 46th Annual Meeting of the As-
sociation of Computational Linguistics: Human...
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Tài liệu Báo cáo khoa học: "Automatic Extraction of Lexico-Syntactic Patterns for Detection of Negation and Speculation Scopes" pdf
Ngày tải lên :
20/02/2014, 04:20
... children (starting from the root
of the subtree) to the rule pattern subtree. Nodes
of type *scope* and * match any number of nodes,
similar to the semantics of Regex Kleene star (*).
5 Results
As ... neighboring identical siblings of
type *scope* or * are replaced by a single node of
the corresponding type. Figure 3 shows an example
of this transformation.
(a) The children of nodes JJ/NN/NN are
pruned ... Statistics of the BioScope corpus. The 2nd and 3d
columns show the total number of cues within the datasets; the
4th and 5th columns show the percentage of negated and spec-
ulative sentences.
70% of...
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Tài liệu Báo cáo khoa học: "Robust Extraction of Named Entity Including Unfamiliar Word" doc
Ngày tải lên :
20/02/2014, 09:20
... Extraction of Japanese Named Entity
2.1 Task of the IREX Workshop
The task of NE extraction of the IREX workshop
(Sekine and Eriguchi, 2000) is to recognize eight
NE types in Table 1. The organizer of ... features of original morphemes and fea-
tures of similar morphemes. The experiments of
extracting Japanese NEs from IREX corpus and
NHK corpus show the effectiveness of the proposed
method.
2 Extraction ... 2003; Nakano and Hirai, 2004) formalized
the task of extracting NEs as a chunking problem
of a sequence of characters instead of a sequence of
morphemes. In this paper, we keep the naive formal-
ization,...
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Tài liệu Báo cáo khoa học: "Ontologizing Semantic Relations" pdf
Ngày tải lên :
20/02/2014, 12:20
... is-a (Ravi-
chandran and Hovy 2002), part -of (Girju et al.
2003), and other relations.
The output of most of these systems is flat lists
of lexical semantic knowledge such as “Italy is-a
country” ... ontologizing binary semantic
relations into WordNet and we present empirical
results on the task of attaching part -of and causa-
tion relations. Formally, given an instance
(x, r, y) of a binary relation ... all instantiation of
x and y in the corpus. Semantic classes represent
possible common generalizations of the verb ar-
guments. At the end of the process, a set of syn-
tactic -semantic patterns...
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Tài liệu Báo cáo khoa học: "Evaluating the Inferential Utility of Lexical-Semantic Resources" ppt
Ngày tải lên :
22/02/2014, 02:20
... and clustering
of similar words. In Proceedings of COLING-ACL.
George A. Miller, Claudia Leacock, Randee Tengi, and
Ross T. Bunker. 1993. A semantic concordance. In
Proceedings of HLT.
Dan Moldovan ... 2007. Yago: A core of semantic knowl-
edge - unifying wordnet and wikipedia. In Proceed-
ings of WWW.
Idan Szpektor, Eyal Shnarch, and Ido Dagan. 2007.
Instance-based evaluation of entailment rule ... Proceedings of ACL.
Idan Szpektor, Ido Dagan, Roy Bar-Haim, and Jacob
Goldberger. 2008. Contextual preferences. In Pro-
ceedings of ACL.
Ellen M. Voorhees. 1994. Query expansion using
lexical -semantic relations. ...
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Tài liệu Báo cáo khoa học: "Incorporating Context Information for the Extraction of Terms" pdf
Ngày tải lên :
22/02/2014, 03:20
... sum of the context
weights for a,
N the size of the corpus in terms of number of words.
3 Future work
Our future work involves
1. The investigation of the context used for the
evaluation of ... University
of Manchester Institute of Science and Technol-
ogy.
Didier Bourigault. 1992. Surface Grammatical
Analysis for the Extraction of Terminological
Noun Phrases. In Proceedings of the ... ratio for the extraction of two-word English
terms. (Frantzi and Ananiadou, 1996), besides the
frequency of occurrence, also consider the frequency
of the candidate string as a part of longer...
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Tài liệu Báo cáo khoa học: "ON THE REPRESENTATION OF QUERY TERM RELATIONS BY SOFT BOOLEAN oPERATORS" ppt
Ngày tải lên :
22/02/2014, 09:20
...
recognition of semantically equivalent noun phrases
of the kind needed for the construction of classif-
ication schedules is also exceedingly difficult.
For practical purposes, the use
of
term ... to a recognition of
noun phrases of the type normally included in
back -of- the-book indexes, and an identification of
related terms included in a preconstructed
thesaurus of quasi-synonyms. ... uncertain nature of the relations
between terms in the language. When a relaxed
interpretation of Boolean logic is used, the
correspondence with the fuzzy nature of linguistic
relations is much...
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Lines of Credit and Relationship Lending in Small Firm Finance pdf
Ngày tải lên :
06/03/2014, 08:20
... Journal of
Financial Economics 25: 99-122.
24
driven loans. Moreover, when we group these four types of loans together, only 26.0% of
borrowers with two or more of any of these types of loans ... conjecture that our finding of a
significant effect of relationship lending on loan prices differs from that of Petersen and
Rajan (1993,1994) primarily because of their inclusion of "transaction-driven" ... evidence of a lesser dependence on trade credit by firms with longer banking
relationships, supporting the value of relationship lending.
Petersen and Rajan's failure to find evidence of relationship...
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A Power Audit of EU-China Relations John Fox & François Godement POLICY REPORT ppt
Ngày tải lên :
06/03/2014, 23:20
... the virtue of engagement. So China can dictate the terms of
the relationship, turning it on and off as it pleases.
37
Economic imbalances
Nowhere is the failure of the EU’s policy of unconditional ... power of the EU while underestimating
China’s ability to use engagement with Europe to its own ends. The EU’s
official policy towards China is woefully out of sync with the reality of
the relationship.
The ... Foreign Relations does not take
collective positions. This paper, like all publications of the
European Council on Foreign Relations, represents only
the views of its authors.
A POWER AUDIT
OF...
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Báo cáo khoa học: "Espresso: Leveraging Generic Patterns for Automatically Harvesting Semantic Relations" docx
Ngày tải lên :
08/03/2014, 02:21
... preci-
sion but often very low recall (e.g., “X consists of
Y” for part -of relations) . In this section, we de-
scribe the overall architecture of Espresso, pro-
pose a principled measure of reliability, ... of Table 2, “X in the Y” for the part -of rela-
tion of Table 4, “X in Y” for the part -of relation
of Table 5, and “X and Y” for the reaction rela-
tion of Table 7. Figure 1 illustrates the results. ... small set of instances.
Espresso is designed to extract various seman-
tic relations exemplified by a given small set of
seed instances. We consider the standard is-a and
part -of relations...
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Báo cáo khoa học: "Interpreting Semantic Relations in Noun Compounds via Verb Semantics" pdf
Ngày tải lên :
08/03/2014, 02:21
... forms of se-
mantic relations to decide the semantic relation for
NCs.
3 Semantic Relations in Compound
Nouns
While there has been wide recognition of the need
for a system of semantic relations ... relation forms.
The set of seed verbs contains verbs representa-
tive of each semantic relation form. We chose two
sets of seed verbs of size 57 and 84, to examine
how the coverage of actual verbs by ... 2. Note
that the test data set is the same for both sets of
semantic relations, but that the training data in
the case of 17 semantic relations will not con-
tain any instances for the EQUATIVE...
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Báo cáo khoa học: "A Nonparametric Method for Extraction of Candidate Phrasal Terms" docx
Ngày tải lên :
08/03/2014, 04:22
... words with a cutoff of
N=10. The resulting n-gram set had a maximum
recall of 2,610 phrasal terms from the WordNet
gold standard, and found the best figure of merit
for any of the association ... occur at least 50
times; in short, the strategy of cutting off the data
at a threshold sacrifices a large percent of total
recall. Thus one of the issues that needs to be
addressed is the ... that the selection of component terms
is statistically independent. But of course the
possibilities for combinations of words are
anything but random and independent. Use of
linguistic filters...
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Báo cáo khoa học: "The Role of Lexico-Semantic Feedback in Open-Domain Textual Question-Answering" ppt
Ngày tải lên :
08/03/2014, 05:20
... WordNet encodes a
wealth of semantic information that is easily
mined. Seven types of semantic relations span
concepts, enabling the retrieval of synonyms
and other semantically related terms. ... IS-PART of vol-
cano, and moreover it is a part coming from the
inside; and (c) fragments of lava have all the prop-
erties of lava, the following question semantic
The Role of Lexico -Semantic ... are not members of any WordNet synsets
containing the original keyword; and (b) have a
chain of WordNet relations or bigram relations
that connect it to the original keyword. These
relations can...
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