towards robust animacy classification
Tài liệu Báo cáo khoa học: "Creating Robust Supervised Classifiers via Web-Scale N-gram Data" pdf
Ngày tải lên :
20/02/2014, 04:20
... Jin-Dong Kim,
Tomoko Ohta, John McNaught, Sophia Ananiadou,
and Jun’ichi Tsujii. 2005. Developing a robust part-
of-speech tagger for biomedical text. In Advances in
Informatics.
Peter D. Turney. ... regularize the classifier specifically for out-
of-domain accuracy. We found that adjusting the
SVM misclassification penalty (for more regular-
ization) can help or hurt out-of-domain. Other
regularizations ... conducted.
References
Nir Ailon and Mehryar Mohri. 2008. An efficient re-
duction of ranking to classification. In COLT.
Michele Banko and Eric Brill. 2001. Scaling to very
very large corpora for...
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Tài liệu Báo cáo khoa học: "Transition-based parsing with Confidence-Weighted Classification" pdf
Ngày tải lên :
20/02/2014, 04:20
... token
at the head of the buffer, and pop the stack.
2.1 Classification
Transition-based dependency parsing reduces
parsing to consecutive multiclass classification.
From each configuration one amongst ... in the MaltParser is to use a 2nd-
degree polynomial kernel with the SVM.
3 Confidence-weighted classification
Dredze et al. (2008) introduce confidence-
weighted linear classifiers which are online-
classifiers ... On the other hand if it has
never been updated before the estimation is prob-
ably very bad. CW classification deals with this
by having a confidence-parameter for each weight,
modeled by a Gaussian...
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Tài liệu Báo cáo khoa học: "Automatically Extracting Polarity-Bearing Topics for Cross-Domain Sentiment Classification" pptx
Ngày tải lên :
20/02/2014, 04:20
... algorithms for
sentiment classification, SCL and SFA. Each set of
bars represent a cross-domain sentiment classifica-
tion task. The thick horizontal lines are in-domain
sentiment classification accuracies. ... train-
ing. Figure ?? shows the classification results on the
five different domains by varying the number of top-
ics from 1 to 200. It can be observed that the best
classification accuracy is obtained ... Cross-
Domain Sentiment Classification. In COLING, page
1327-1335.
A. Yessenalina, Y. Choi, and C. Cardie. 2010a. Auto-
matically generating annotator rationales to improve
sentiment classification. In...
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Tài liệu Báo cáo khoa học: "Using Multiple Sources to Construct a Sentiment Sensitive Thesaurus for Cross-Domain Sentiment Classification" doc
Ngày tải lên :
20/02/2014, 04:20
... sentiment classification using multi-
ple source domains. Experimental results using a
benchmark dataset for cross-domain sentiment clas-
sification show that our proposed method can im-
prove classification ... as the classification algo-
rithm (Ng, 2004), which produces a sparse model in
which most irrelevant features are assigned a zero
weight. This enables us to select useful features for
classification ... outlined in Section 5.1, so any
changes in classification accuracy can be directly at-
tributed to the contribution of unlabeled data. Figure
4 shows classification accuracy on the DVD target
domain...
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Tài liệu Báo cáo khoa học: "Hierarchical Text Classification with Latent Concepts" doc
Ngày tải lên :
20/02/2014, 05:20
... hierarchical text classification with
latent concepts. Experimental results show
that the performance of our algorithm is com-
petitive with the recently proposed hierarchi-
cal classification algorithms.
1 ... criterions, e.g. “Entertainment”, “Sport-
s” and “Education” in news classification, “Junk E-
mail” and “Ordinary Email” in email classification.
In the literature, many algorithms (Sebastiani, 2002;
Yang ... most of these methods are quite effective in tra-
ditional text classification applications.
In past serval years, hierarchical text classification
has become an active research topic in database...
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Tài liệu Báo cáo khoa học: "Which Are the Best Features for Automatic Verb Classification" pdf
Ngày tải lên :
20/02/2014, 09:20
... (2007) conducts 11 classification tasks includ-
ing six 2-way classifications, two 3-way classifica-
tions, one 6-way classification, one 8-way classifi-
cation, and one 14-way classification. In our ... Automatic verb classification using a
general feature space. Master’s thesis, University of
Toronto.
Joanis, E., Stevenson, S., and James, D. (2007). A general
feature space for automatic verb classification. ... verb classification. In
Proceedings of the 19th International Conference on
COLING, pages 1023–1029, Taiwan, China.
442
the linguistic conditions which are crucial for lex-
ical semantic classification...
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Tài liệu Báo cáo khoa học: "Guided Learning for Bidirectional Sequence Classification" ppt
Ngày tải lên :
20/02/2014, 12:20
... in turn used to train the local clas-
sifier. Therefore, the order of inference and the lo-
cal classification are dynamically incorporated in the
learning phase.
Guided learning is not as hard ... 2007.
c
2007 Association for Computational Linguistics
Guided Learning for Bidirectional Sequence Classification
Libin Shen
BBN Technologies
Cambridge, MA 02138, USA
lshen@bbn.com
Giorgio Satta
Dept. ... USA
joshi@seas.upenn.edu
Abstract
In this paper, we propose guided learning,
a new learning framework for bidirectional
sequence classification. The tasks of learn-
ing the order of inference and training the
local classifier are...
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Tài liệu Báo cáo khoa học: "Exploiting Syntactic and Shallow Semantic Kernels for Question/Answer Classification" docx
Ngày tải lên :
20/02/2014, 12:20
... state-of-the-art accuracy on
question classification. (b) PB predicative structures
are not effective for question classification but show
promising results for answer classification on a cor-
pus of answers ... representation
too sparse.
We learn answer classification with a binary SVM
which determines if an answer is correct for the tar-
get question: here, the classification instances are
question, answer ... the
question but could not be judged as valid answers
5
.
Answer classification results To test the impact
of our models on answer classification, we ran 5-fold
cross-validation, with the constraint...
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Tài liệu Báo cáo khoa học: "Rethinking Chinese Word Segmentation: Tokenization, Character Classification, or Wordbreak Identification" pdf
Ngày tải lên :
20/02/2014, 12:20
... our method is sufficiently robust to
account for a large number of ambiguities like nu-
merals, foreign words.
5 Conclusion
In this paper, we presented a radical and robust
model of Chinese segmentation ... information and it treats
character strings as context which provides infor-
mation on the possible classification of character-
breaks as word-breaks. We are confident that once
a standard model of ... 1995). Last, but not the least,
we will explore the possibility of implementing a
sharable tool for robust segmentation for all Chinese
texts without training.
References
Academia Sinica Balanced...
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Tài liệu Báo cáo khoa học: "Machine Learning for Coreference Resolution: From Local Classification to Global Ranking" ppt
Ngày tải lên :
20/02/2014, 15:20
... a training or test instance, and the
clustering algorithm used to coordinate the coref-
erence classification decisions. Selecting a corefer-
ence system, then, is a matter of instantiating these
elements ... induction
system (Quinlan, 1993), the RIPPER rule learning
algorithm (Cohen, 1995), and maximum entropy
classification (Berger et al., 1996). The classifica-
tion model induced by each of these learners ... Association for Computational Linguistics
Machine Learning for Coreference Resolution:
From Local Classification to Global Ranking
Vincent Ng
Human Language Technology Research Institute
University...
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Tài liệu Báo cáo khoa học: "The Sentimental Factor: Improving Review Classification via Human-Provided Information" docx
Ngày tải lên :
20/02/2014, 16:20
... increasingly useful. Traditionally,
most research effort has been directed towards “ob-
jective” information, such as classification accord-
ing to topic; however, interest is growing in produc-
ing ... Artificial Intelligence (AAAI-2000),
Austin, Texas.
Jian Zhang and Yiming Yang. 2003. ”robustness of
regularized linear classification methods in text
categorization”. In Proceedings of the 26th An-
nual ... function of
d. Models that take this form are commonplace in
classification.
2.3 Turney’s Classifier as Naive Bayes
Although Naive Bayes classification requires a la-
beled corpus of documents, we...
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Tài liệu Báo cáo Y học: Structure of the O-polysaccharide and classification of Proteus mirabilis strain G1 in Proteus serogroup O3 potx
Ngày tải lên :
21/02/2014, 15:20
... O-polysaccharide of Proteus mirabilis G1 (Eur. J. Biochem. 269) 1409
Structure of the O-polysaccharide and classification
of
Proteus mirabilis
strain G1 in
Proteus
serogroup O3
Zygmunt Sidorczyk
1
, Krystyna...
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Tài liệu Báo cáo khoa học: "User Edits Classification Using Document Revision Histories" pptx
Ngày tải lên :
22/02/2014, 03:20
... types based on manual examina-
tion of 50 fluency edit misclassifications and 50
factual edit misclassifications.
leads to a small decrease in classification accu-
racy, namely 86.68% instead of 87.14% ... have better understanding of errors made by
the classifier, 50 fluency edit misclassifications
and 50 factual edit misclassifications are ran-
domly selected and manually examined. The er-
rors are ... agree with the feature analy-
sis. Fluency edit misclassifications are typically
longer phrases that carry the same meaning while
factual edit misclassifications are typically sin-
gle words or short...
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A Classification of SQL Injection Attacks and Countermeasures pptx
Ngày tải lên :
05/03/2014, 23:20
... (not including the tool itself) is needed to successfully
use the technique? The results of this classification are summarized
in Table 3.
6.4 Evaluation of Prevention-Focused Tech-
niques with ... string that caused the
type conversion to occur. In this case, this value is also the name of
A Classification of SQL Injection Attacks
and Countermeasures
William G.J. Halfond, Jeremy Viegas,...
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Báo cáo khoa học: A new phospholipase A2 isolated from the sea anemone Urticina crassicornis – its primary structure and phylogenetic classification pptx
Ngày tải lên :
06/03/2014, 11:20
... that cannot be easily
incorporated into the existing classification scheme,
resulting in a growing problem in the comprehensive
evolutionary classification of the secretory PLA
2
super-
family [1]. ... muscle contractions after only several minutes of
exposure to the toxin (not shown).
Evolutionary classification of the group I PLA
2
family – no orthologous group I PLA
2
s exist in
invertebrates
Phylogenomic ... A
2
isolated from the sea anemone
Urticina crassicornis – its primary structure and
phylogenetic classification
Andrej Razpotnik
1
, Igor Kriz
ˇ
aj
2
, Jernej S
ˇ
ribar
2
, Dus
ˇ
an Kordis
ˇ
2
,...
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