a comparison of evaluation metrics for document filtering
Báo cáo khoa học: "A Comparison of Event Models for Naive Bayes Anti-Spam E-Mail Filtering" potx
Ngày tải lên :
31/03/2014, 20:20
... e-mail: A comparison of
a Naive Bayesian and a memory-based approach.
In H. Zaragoza, P. Gallinari, and M. Rajman, edi-
tors, Proc. Workshop on Machine Learning and Tex-
tual Infbrmation Access, ... classify
e-mail. In
Papers from the AAAI Spring Symposium
on Machine Learning in Information Access,
pages
18-25, Stanford, CA. AAAI Press.
Thomas M. Cover and Joy A. Thomas. 1991.
Elements
of InfOrmation ... models for Naive Bayes text clas-
sification. In
Proc. AAAI-98 Workshop on Learning
for Text Categorization,
pages 41-48. AAAI Press.
Dunja Mladeni6 and Marko Grobelnik. 1999. Feature
selection for...
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A Comparison of Event Models for Naive Bayes Text Classi cation potx
Ngày tải lên :
16/03/2014, 19:20
... the task of text classification in a Bayesian
learning framework. This approach assumes that the
text data was generated by a parametric model, and
uses training data to calculate Bayes-optimal ... calculate Bayes-optimal estimates for
these parameters from a set of labeled training data.
Here, the estimate of the probability of word w
t
in class
c
j
is:
2
Many previous formalizations of ... |
s=1
|D|
i=1
N
is
P(c
j
|d
i
)
.
(6)
The class prior parameters are calculated as before
accordingtoEquation4.
Classification
Given estimates of these parameters calculated from the
training documents, classification can be performed...
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Báo cáo khoa học: "A Comparison of Chinese Parsers for Stanford Dependencies" ppt
Ngày tải lên :
23/03/2014, 14:20
... Learning
Research, 9:1871–1874, June.
Jan Haji
ˇ
c, Massimiliano Ciaramita, Richard Johansson,
Daisuke Kawahara, Maria Ant
`
onia Mart
´
ı, Llu
´
ıs M
`
arquez,
Adam Meyers, Joakim Nivre, Sebastian Pad
´
o, ... dependency parsers).
3 Results
Table 3 tabulates efficiency and performance for all
parsers; UAS and LAS are unlabeled and labeled at-
tachment scores, respectively — the standard crite-
ria for evaluating ... reviewers, for valuable comments.
Supported in part by the National Natural Science Founda-
tion of China (NSFC) via grant 61133012, the National “863”
Major Project grant 2011AA0 1A2 07, and the National...
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Báo cáo khoa học: "A Class of Submodular Functions for Document Summarization" pot
Ngày tải lên :
23/03/2014, 16:20
... 1.
3.3 Automatic summarization evaluation
Automatic evaluation of summary quality is impor-
tant for the research of document summarization as
it avoids the labor-intensive and potentially inconsis-
tent ... sum-
marization (2005–2007). As ROUGE (Lin, 2004)
has been of cially adopted for DUC evaluations
since 2004, we also take it as our main evaluation
criterion. We evaluated our approaches on DUC
data ... constant-factor approximation
guarantee does not apply in this case.
When scoring a summary at the sub-sentence
level, submodularity naturally arises. Concept-based
summarization (Filatova and Hatzivassiloglou,...
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báo cáo hóa học:" A comparison of classification methods for predicting Chronic Fatigue Syndrome based on genetic data" potx
Ngày tải lên :
18/06/2014, 15:20
... now adopted AUC for
evaluating predictive ability of classifiers owing to the fact
that AUC is a better performance metric than accuracy
[31]. In this study, AUC was used as a value to compare
the ... BioMed Central
Page 1 of 8
(page number not for citation purposes)
Journal of Translational Medicine
Open Access
Research
A comparison of classification methods for predicting Chronic
Fatigue Syndrome ... as testing data and different nine-tenths of
the data as training data. Finally, the average estimate over
all runs was reported by running the above regular 10-fold
cross-validation for 100 times...
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A comparison of real and simulated designs for vibratory parts feeding
Ngày tải lên :
03/01/2014, 19:15
... See
http://www.research.digital.com/SRC/juno-2.
[
10
]
JayaramanKrishnasamy, MarkJ.Jakiela, andDanielE.Whit-
ney. Mechanics of vibration-assisted entrapment with appli-
cation to design. In International Conference ... February 1971.
[
15
]
Balas K. Natarajan. Some paradigms for the automated de-
sign of parts feeders. International Journal of Robotics Re-
search, 8(6):98–109, December 1989. Also appeared in ... taking
the Cartesian product over all the parameter values. It also
allows us to specify equivalence classes of stable states, and
it then automatically categorizes the state (and hence, the
equivalence...
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Tài liệu Báo cáo khoa học: "A Comparison of Alternative Parse Tree Paths for Labeling Semantic Roles" ppt
Ngày tải lên :
20/02/2014, 12:20
... International
Conference on Language Resources and Evaluation,
Granada, Spain.
Marcus, Mitchell P., Beatrice Santorini and Mary Ann
Marcinkiewicz. 1993. Building a Large Annotated
Corpus of ...
training data is available.
6 Discussion
Annotated corpora of linguistic phenomena en-
able many new natural language processing ap-
plications and provide new means for tackling
difficult research ... dependency parser.
1 Introduction
A persistent goal of natural language processing
research has been the automated transformation
of natural language texts into representations that
unambiguously...
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Báo cáo khoa học: "A Comparison of Document, Sentence, and Term Event Spaces" potx
Ngày tải lên :
17/03/2014, 04:20
...
References
Lada A. Adamic 2000 Zipf, Power-laws, and Pareto -
a ranking tutorial. [Available from
http://www.parc.xerox.com/istl/groups/iea/papers/r
anking/ranking.html]
Ricardo Baeza-Yates, and Berthier ... (ITF). A direct
comparison reveals that all language
models are highly correlated; however,
the average ISF and ITF values are 5.5
and 10.4 higher than IDF. All language
models appeared to ...
0
5
10
15
123456789101112131415161718
Global IDF
Average Local IDF
ACHRE4
ANCHAM
BICHAW
BIPRET
BOMAF6
CGDEFU
CMATEX
ESTHAG
IECRED
INOCAJ
JACSAT
JAFCAU
JCCHFF
JCISD8
JMCMAR
JNPRDF
JOCEAH
JPCAFH
JPCBFK
JPROBS
MAMOBX
MPOHBP
NALEFD
OPRDFK
ORLEF7
...
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Báo cáo khoa học: Systems biology: model based evaluation and comparison of potential explanations for given biological data pot
Ngày tải lên :
23/03/2014, 06:20
... subdivided?
Should a core prediction be
formulated as a rejection of
a subexplanation?
variations of each other?
Are there acceptable explanations
that can be considered as trivial
and presentation of results
Are ... model (‘Refor-
mulation of a hypothesis into a mathematical model’).
This is the step that allows for a systematic, quantita-
tive, and automatic analysis of many of the properties
that are implied ... problem of evaluat-
ing and comparing two or several explanations for a
given set of data and prior knowledge, so as to identify
the best available explanations. We have reviewed
methods that evaluate...
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Báo cáo khoa học: "A Comparison of Loopy Belief Propagation and Dual Decomposition for Integrated CCG Supertagging and Parsing" potx
Ngày tải lên :
23/03/2014, 16:20
... empirical comparison of BP and DD also com-
plements the theoretically-oriented comparison of
marginal- and margin-based variational approxima-
tions for parsing described by Martins et al. (2010).
We ... in a previously circulated draft of this paper, for
two reasons: we evaluate only on sentences for which a parse
was returned instead of all parses, to enable direct comparison
with Clark and ... features of
the supertagger are all Markov features on adjacent
supertags, the change has serious implications for
search. If we think of the supertagger as defining a
weighted regular language...
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Báo cáo khoa học: "A Comparison of Head Transducers and Transfer for a Limited Domain Translation Application" pptx
Ngày tải lên :
24/03/2014, 03:21
... having iden-
tical sublanguage domain and test data, and using
similar automata for analysis in the transfer system
and transduction in the transducer system. Another
justification is that ... particular type of fi-
nite state automata associated with each word in the
language.
A relational head acceptor writes (or accepts) a
pair of symbol sequences, a left sequence and a right
sequence. ... above are averages
over the same 200 test utterances used in the accu-
racy evaluation. These timings are for an implemen-
tation of the search algorithms in Lisp on a Silicon
Graphics machine...
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a comparison of neural network architectures for
Ngày tải lên :
28/04/2014, 10:10
... is based on Shannon’s entropy. It
is a statistical measurement of the capability of a
feature to separate digit classes. If the information
measure of a feature is high, it indicates that the ... for the use of neural network learning
techniques for this type of application and data set, and
insight about the appropriate design, use, and
parameterization of the network to achieve acceptable ... between a feature’s template and the
input image. A value of 0 indicates that a feature
template did not match the digit image; a value of 1
indicates a complete match; and values in between
these...
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báo cáo hóa học:" A comparison of two headless compression screws for operative treatment of scaphoid fractures" doc
Ngày tải lên :
20/06/2014, 04:20
... 90(1):66-71.
15. Dias JJ, Dhukaram V, Abhinav A, Bhowal B, Wildin CJ:
Clinical and
radiological
outcome of cast immobilization versus surgical treatment of
acute scaphoid fractures at a mean follow-up of 93 ... system
may relate to the thread pattern. The Acutrak 2 is a
fully threaded design that generates a large amount of
thread-to-bone contact area. In comparison, the Synthes
screw has fewer threads, ... idea for the study and was responsible for revision of manuscript. The
second author on the paper, JA, collected and analyzed the data and
drafted the original manuscript. He is also the contact...
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- 0
báo cáo hóa học:" A comparison of two headless compression screws for operative treatment of scaphoid fractures" pdf
Ngày tải lên :
20/06/2014, 07:20
... 90(1):66-71.
15. Dias JJ, Dhukaram V, Abhinav A, Bhowal B, Wildin CJ:
Clinical and
radiological
outcome of cast immobilization versus surgical treatment of
acute scaphoid fractures at a mean follow-up of 93 ... greater final compression than the Synthes system
may relate to the thread pattern. The Acutrak 2 is a
fully threaded design that generates a large amount of
thread-to-bone contact area. In comparison, ... idea for the study and was responsible for revision of manuscript. The
second author on the paper, JA, collected and analyzed the data and
drafted the original manuscript. He is also the contact...
- 6
- 403
- 1
báo cáo hóa học:" Do visual analogue scale (VAS) derived standard gamble (SG) utilities agree with Health Utilities Index utilities? A comparison of patient and community preferences for health status in rheumatoid arthritis patients" pptx
Ngày tải lên :
20/06/2014, 15:20
... Epidemiology and Evaluation, Vancouver Coastal Health
Research Institute, Vancouver, BC, Canada
Email: Amir Adel Rashidi - amiradel@interchange.ubc.ca; Aslam H Anis - aslam.anis@ubc.ca; Carlo A Marra* ... Marra*
3,4
Address:
1
Centre for Clinical Epidemiology and Evaluation, Faculty of Pharmaceutical Sciences, University of British Columbia, Canada,
2
MHA
Program, Department of Health Care and Epidemiology, ... Health Utilities Index utilities? A comparison of
patient and community preferences for health status in rheumatoid
arthritis patients
Amir Adel Rashidi
1
, Aslam H Anis
2
and Carlo A Marra*
3,4
Address:...
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- hệ việt nam nhật bản và sức hấp dẫn của tiếng nhật tại việt nam
- xác định các mục tiêu của chương trình
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- khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản
- khảo sát chương trình đào tạo gắn với các giáo trình cụ thể
- xác định thời lượng học về mặt lí thuyết và thực tế
- tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam
- điều tra đối với đối tượng giảng viên và đối tượng quản lí
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- khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam
- khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu
- nội dung cụ thể cho từng kĩ năng ở từng cấp độ
- xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct
- phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ
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- hệ số công suất cosp fi p2
- đặc tuyến hiệu suất h fi p2