Báo cáo khoa học: "Tagging Inflective Languages: Prediction of Morphological Categories for a Rich, Structured Tagset" docx
Tài liệu Báo cáo khoa học: Structural and functional studies of the human phosphoribosyltransferase domain containing protein 1 docx
... Canyuk B, Focia PJ & Eakin AE (2001) The role for
an invariant aspartic acid in hypoxanthine phospho-
ribosyltransferases is examined using saturation muta-
genesis, functional analysis, and ... specificity of PRTFDC1 was
further characterized using a radiochemical assay with
tritium-labeled bases as substrates, whereas the struc-
tural basis for substrate recognition and activity...
Tài liệu Báo cáo khoa học: Unraveling the catalytic mechanism of lactoperoxidase and myeloperoxidase A reflection on some controversial features Elena Ghibaudi and Enzo Laurenti docx
... hypo-
thesis that describes an integrated vision of the catalytic
mechanism of both enzymes. The main points are: (a) a
re-evaluation of the role of superoxide as a reductant in the
catalytic cycle; ... reversibility of Cpd I formation was
first stated by Wever et al. [38] and subsequently confirmed
by Marquez et al. [18] and Kettle et al. [22]. As for the
presence of pseudoca...
Báo cáo khoa học: "Test Collection Selection and Gold Standard Generation for a Multiply-Annotated Opinion Corpus" potx
... N
3.3 Kappa value for agreement
We further assess the usability of the annotated
corpus by Kappa values. Kappa value gives a
quantitative measure of the magnitude of inter-
annotator agreement. ... polarities
annotated by annotators are identical. In case B,
the polarities annotated by two of three annotators
are agreed. However, in cases C and E, the polari-
ties annotated...
Báo cáo khoa học: The HS:19 serostrain of Campylobacter jejuni has a hyaluronic acid-type capsular polysaccharide with a nonstoichiometric sorbose branch and O-methyl phosphoramidate group docx
... Sciences, National Research Council of Canada, Ottawa Ontario, Canada
Campylobacter jejuni is one of the leading causes of
human gastroenteritis and surpasses Salmonella, Shig-
ella and Escherichia in ... 2-aminoglycerol. A
labile a- sorbofuranose branch located at C2 of GlcA was determined to
have the l configuration using a novel pyranose oxidase assay and is the
first report of...
Tài liệu Báo cáo khoa học: "Fast and Robust Part-of-Speech Tagging Using Dynamic Model Selection" pptx
... training data
and grid search on Liblinear parameters c and B (see
Section 2.4 for more details about the parameters).
2
For our experiments, we treat each section of the Wall
Street Journal as ... that a POS tagger has been
evaluated on such a wide variety of data in English.
363
2 Approach
2.1 Training generalized and domain-specific
models using document frequency
Consider train...
Tài liệu Báo cáo khoa học: "Constituent-based Accent Prediction" pdf
... Constituent-based Accent Prediction
Christine H. Nakatani
AT&T Labs - Research
180 Park Avenue, Florham Park NJ 07932-097 I, USA
email: chn @ research.att.com
Abstract
Near-perfect automatic accent ... corner] of[ Beacon and
Mass Ave].
BaseNPs are semi-automatically la-
beled for lexical, syntactic, local focus and global
focus features. Table 2 provides summary corpus
sta...
Tài liệu Báo cáo khoa học: "Tagging English by Path Voting Constraints" pptx
... assume that sentences are delineated and
that each token is assigned all possible tags by a
lexicon or by a morphological analyzer. We rep-
resent each sentence as a standard chart using
a directed ... sentences are disam-
biguated using either statistical or symbolic lo-
cal contextual information. Tagging systems
have used either a statistical approach where
a large corp...
Báo cáo khoa học: "Joint and conditional estimation of tagging and parsing models∗" docx
... Introduction
Many statistical NLP applications, such as tag-
ging and parsing, involve finding the value
of some hidden variable Y (e.g., a tag or a
parse tree) which maximizes a conditional prob-
ability ... Joint and conditional estimation of tagging and parsing models
∗
Mark Johnson
Brown University
Mark
Johnson@Brown.edu
Abstract
This paper compares two different ways
of estima...
Báo cáo khoa học: "Categorial Fluidity in Chinese and its Implications for Part-of-speech Tagging" pptx
... lexicon, as in (4).
•
Transitional ambiguity: a word undergoes a
process of categorial shift, where it origi-
nally belongs to a particular syntactic cate-
gory and gradually assumes usage of another
category ... mainly for two reasons.
First, categorial change in Chinese words is not
often associated with morphological marking.
115
Thus the same word form can have more than
one...
Báo cáo khoa học: "Tagging Urdu Text with Parts of Speech: A Tagger Comparison" doc
... is the national language of Pakistan and is one
of the official languages of India. The majority
of the speakers of Urdu spread over the area of
South Asia, South Africa and the United King-
dom
1
. ... probability of a word having a par-
ticular tag is called lexical probability. Both, the
transitional and the lexical probabilities are used
to select the tag of a par...