robust disambiguation of named entities in text
Báo cáo khoa học: "Detecting Semantic Relations between Named Entities in Text Using Contextual Features" pdf
Ngày tải lên :
17/03/2014, 04:20
... the antecedents of (zero) pronouns. When
there is a (zero) pronoun in the text, noun phrases
that are in the previous context of the pronoun are
sorted in order of likelihood of being the antecedent.
The ... property-sharing constraint in center-
ing. Annual Meeting of Association of Computational Lin-
guistics, pages 200–206.
T. Kudo and Y. Matsumoto. 2004. A boosting algorithm for
classification of semi-structured ... relations out of 236,142 pairs in the annotated
text. We conducted ten-fold cross-validation over
236,142 pairs of NEs so that sets of pairs from a
single text were not divided into the training and...
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Báo cáo khoa học: "Recall-Oriented Learning of Named Entities in Arabic Wikipedia" pptx
Ngày tải lên :
24/03/2014, 03:20
... Computational Linguistics.
Kevin Gimpel and Noah A. Smith. 2010a. Softmax-
margin CRFs: Training log-linear models with loss
functions. In Proceedings of the Human Language
Technologies Conference of the ... with self-training
on unlabeled target-domain data; enforc-
ing the same recall-oriented bias in the self-
training stage yields marginal gains.
1
1 Introduction
This paper considers named entity ... chal-
lenging problem of identifying named entities in
Arabic Wikipedia text.
2 Arabic Wikipedia NE Annotation
Most of the effort in NER has been fo-
cused around a small set of domains and
general-purpose...
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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
... compare perfor-
mances of proposed methods and baseline methods.
3 Robust Extraction of Named Entities
Including Unfamiliar Words
The proposed method of extracting NEs consists
of two steps. Its first ... Example of Training Instance for Proposed Method
−→ Parsing Direction −→
Feature set F
i−2
F
i−1
F
i
F
i+1
F
i+2
Chunk label c
i−2
c
i−1
c
i
Figure 1 shows an example of training instance of
the ... know.
1
2.2 Chunking of Named Entities
It is quite common that the task of extracting
Japanese NEs from a sentence is formalized as
a chunking problem against a sequence of mor-
1
The organizer of the...
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Báo cáo khoa học: "Annotating and Recognising Named Entities in Clinical Notes" pot
Ngày tải lên :
08/03/2014, 01:20
... baseline system was built
using only bag -of- word features from the training
corpus. A context-window size of 2 and tag pre-
diction of previous token were used in all experi-
ments. Without using ... acronyms in
the notes. This also suggest that this kind of clin-
ical notes are very noisy, and require a consider-
23
able amount of effort in pre-processing. Allow-
ing partial matching increased ... overall
increase of 2.47 F-score. Partial matching discov-
ered a larger number of matching candidates us-
ing a looser matching criteria, therefore decreased
in precision with compensation of an increase...
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Báo cáo khoa học: "Recognizing Named Entities in Tweets" docx
Ngày tải lên :
17/03/2014, 00:20
... Linguistics
Recognizing Named Entities in Tweets
Xiaohua Liu
‡ †
, Shaodian Zhang
∗ §
, Furu Wei
†
, Ming Zhou
†
‡
School of Computer Science and Technology
Harbin Institute of Technology, Harbin, 150001, China
Đ
Department ... mingzhou}@microsoft.com
Đ
zhangsd.sjtu@gmail.com
Abstract
The challenges of Named Entities Recogni-
tion (NER) for tweets lie in the insufficient
information in a tweet and the unavailabil-
ity of training data. We propose to com-
bine a K-Nearest Neighbors ... 2010.
Annotating named entities in twitter data with crowd-
sourcing. In CSLDAMT, pages 80–88.
Jenny Rose Finkel and Christopher D. Manning. 2009.
Nested named entity recognition. In EMNLP, pages
141–150.
Jenny...
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TimeML: Robust Specification of Event and Temporal Expressions in Text doc
Ngày tải lên :
30/03/2014, 16:20
... holding during the duration of the other:
10. One being the beginning of the other:
John has lived in Boston since 1998.
11. One being begun by the other: (cf. 10)
12. One being the ending of the ... it contains
incomplete information regarding the domain over which the expression is to be interpreted. We
introduce the attribute CARDINALITY in the MAKEINSTANCE tag to allow for this interpreta-
tion. ... relType="IS_INCLUDED"/>
3.2 SLINK
SLINK or Subordination Link is used for contexts introducing relations between two events, or an
event and a signal, of the following sort:
1. Modal: Relation introduced mostly...
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Tài liệu Báo cáo khoa học: "The Effect of Corpus Size in Combining Supervised and Unsupervised Training for Disambiguation" pdf
Ngày tải lên :
20/02/2014, 12:20
... struc-
tures giving rise to th e same set of dependen-
cies (a piece of a tile of a roof of a house vs.
a piece of a roof of a tile of a house) cannot
be distinguished. We believe that an inverted
index ... performance of 87.6% for a train-
ing set of about 85% of WSJ. That num-
ber is not that far from the 82.8% achieved
by Collins’ parser in our experiments when
trained on 50% of WSJ. Some of the super-
vised ... co-training
for statistical parsers. In Workshop on the Con-
tinuum from Labeled to Unlabeled Data in Ma-
chine Learning and Data Mining, ICML.
Mark Johnson and Stefan Riezler. 2000. Ex-
ploiting...
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Tài liệu Báo cáo khoa học: "SenseLearner: Word Sense Disambiguation for All Words in Unrestricted Text" doc
Ngày tải lên :
20/02/2014, 15:20
... reported during the recent SENSEVAL
evaluations.
1 Introduction
The task of word sense disambiguation consists of
assigning the most appropriate meaning to a polyse-
mous word within a given context. ... advantage of providing
larger coverage.
In this paper, we present a method for solving the
semantic ambiguity of all content words in a text. The
algorithm can be thought of as a minimally supervised
word ... back-off method using the most
frequent sense in WordNet when no training exam-
ples were found in SEMCOR. This resulted into sig-
nificantly higher complexity, with a very large num-
ber of models...
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Báo cáo khoa học: "A Method for Word Sense Disambiguation of Unrestricted Text" potx
Ngày tải lên :
08/03/2014, 06:20
... be able to distin-
guish later the correct sense association from
such a small pool.
3 Contextual ranking of word senses
Since the Internet contains the largest collection
of texts electronically ... results in a
value indicating the frequency of occurrences for
Wl and the sense of W2. In our experiments we
used (Altavista, 1996) since it is one of the most
powerful search engines currently ... SemCor
was done of course within a larger context, the
context of sentence and discourse. By working
only with a pair of words we do not take advan-
tage of such a broader context. For example,...
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Báo cáo khoa học: "Semantic Retrieval for the Accurate Identification of Relational Concepts in Massive Textbases" ppt
Ngày tải lên :
17/03/2014, 04:20
... in-
1023
Query No. User input
1 something inhibit ERK2
2 something trigger diabetes
3 adiponectin increase something
4 TNF activate IL6
5 dystrophin cause disease
6 macrophage induce something
7 ... for
semantic annotations
3.2 On-line processing
The off-line processing described above results in
much simpler on-line processing. User input is
converted into queries of the extended region al-
gebra, ... is significantly improved.
1 Introduction
Rapid expansion of text information has motivated
the development of efficient methods of access-
ing information in huge texts. Furthermore, user
demand...
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Báo cáo khoa học: "Good Spelling of Vietnamese Texts, one aspect of computational linguistics in Vietnam" ppt
Ngày tải lên :
17/03/2014, 07:20
... Designing Vietools
The error detecting program reads one syllable at
a time from the text. The syllable is divided into
an initial consonant and a rhyme pattern, paying
attention to solving initial ... the
correction of a syllable based on the column
position of initial consonants and the row
position of rhyme patterns, for example, the
syllable lamf (work) in the TELEX form, is
composed of the initial ... there
are 27 initial consonants, and 1160 rhyme
patterns (including 6 tones).
Based on Vietnamese syllable structure, the
spelling database is built in a tabular form. Each
element of the table...
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Báo cáo khoa học: "Centrality Measures in Text Mining: Prediction of Noun " docx
Ngày tải lên :
23/03/2014, 19:20
... to represent texts and hence analyze mutual
relevance of two texts. The values of the elements
in a vector are determined by the betweenness cen-
trality of the NPs in a text being analyzed. ... to represent the prominence of a NP in the
text, not only does the kind of the centrality matter,
but also the way of forming the NP network.
Overall, the heuristic of using centrality itself ... NJ.
M. Kubat and S. Matwin. 1997. Addressing the curse of
imbalanced data sets: one-sided sampling. In Proc. of
the Fourteenth International Conference on Machine
Learning, Morgan Kauffman,...
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Báo cáo khoa học: "Recognizing Expressions of Commonsense Psychology in English Text" potx
Ngày tải lên :
23/03/2014, 19:20
... combined into
a single finite state machine (one for each concep-
tual area). By examining the number of states and
transitions in the compiled finite state graphs, some
indication of their relative ... high levels of accuracy in identifying these
concepts in natural language text. The remainder of
this paper describes our efforts in authoring and
evaluating such a resource.
3 Authoring recognition ... 6-11.
Silberztein, M. (1999) Text Indexing with INTEX.
Computers and the Humanities 33(3).
Traum, D. (1993) Mental state in the TRAINS-92 dia-
logue manager. In Working Notes of the AAAI Spring
Symposium...
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Báo cáo khoa học: "Tree Representations in Probabilistic Models for Extended Named Entities Detection" ppt
Ngày tải lên :
24/03/2014, 03:20
... level
of named entities. Using two different sets of
morpho-syntactic features results in more effec-
tive models, as they create a kind of agreement
for a given word in case of match. Concerning
the ... corre-
sponding named entity is shown in figure 4. As
decided in the annotation guidelines, fillers can be
part of a named entity. This can happen for com-
plex named entities involving several ... entities. Fillers
of named entities should be, in principle, distin-
guished from any other filler, since they may be
informative to discriminate entities.
Following this intuition, we designed...
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Báo cáo khoa học: "Automatic of Proper Processing Names in Texts" pptx
Ngày tải lên :
24/03/2014, 05:21
... words). In addition, the number of words
used in constructing proper names is potentially in-
finite.
The first step of the processing is segmentation,
i.e. accurate cutting-up of proper names in ... France
[4] JACOBS P., RAU L. 1993 Innovations in text
interpretation, Artificial Intelligence 63
[5] HAYES PH. 1994 NameFinder : Software that
find names in Text, RIAO '94 New York
[6] ... company) is often used later in the
text instead of the full name. The company Kyocera
Corp, for example, may be designated by the single
word Kyocera in the remainder of the text.
Consequently,...
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