Tài liệu Báo cáo khoa học: "Improved Unsupervised POS Induction through Prototype Discovery" ppt
Tài liệu Báo cáo khoa học: "Improved Unsupervised POS Induction through Prototype Discovery" ppt
... Clustering Evaluation: New Measures
and a POS Induction Case Study. CoNLL ’10.
Roi Reichart, Raanan Fattal and Ari Rappoport, 2010b.
Improved Unsupervised POS Induction Using In-
trinsic Clustering ... Sweden, 11-16 July 2010.
c
2010 Association for Computational Linguistics
Improved Unsupervised POS Induction through Prototype Discovery
Omri Abend
1∗
Roi Reichart
2
Ari R...
Tài liệu Báo cáo khoa học: "An Unsupervised Model for Joint Phrase Alignment and Extraction" ppt
... phrase-based SMT to
find P (e|f , θ) and concentrate on creating a model
for P (θ|E, F). We decompose this posterior prob-
ability using Bayes law into the corpus likelihood
and parameter prior probabilities
P ... model.
A generative probabilistic model where longer
units are built through the binary combination of
shorter units was proposed by de Marcken (1996) for
monolingual word segmen...
Tài liệu Báo cáo khoa học: "Improved Smoothing for N-gram Language Models Based on Ordinary Counts" doc
... N-
gram length proposed by Ney et al.,
2. A single discount used for all N-gram
lengths, optimized on held-out data,
3. The three theory-based discounts for each N-
gram length proposed by Chen and ... N-gram lengths. As an a priori “theory”-based
estimate, we assume that, since the distance be-
tween possible N-gram counts, after discounting,
is approximately 1.0, their mean quantization err...
Tài liệu Báo cáo khoa học: "Fast Unsupervised Incremental Parsing" pdf
... constituent-context model for improved grammar
induction. In Proceedings of ACL 40, pages 128–135.
Dan Klein and Christopher D. Manning. 2004. Corpus-
based induction of syntactic structure: Models ... the lexical entry of x
should collect statistics about each of the adjacency
positions of x. As seen above, adjacency positions
may move, so the learner waits until the parser com-
pletes pa...
Tài liệu Báo cáo khoa học: "An Unsupervised Approach to Recognizing Discourse Relations" pdf
... (A&L)
NEGATIVE (K&S)
CAUSAL -
(SEMANTIC PRAGMATIC ) -
POSITIVE (K&S)
Table 1: Relation definitions as union of definitions proposed by other researchers (M&T – (Mann and
Thompson, 1988); ... access to semantic
interpreters and general purpose knowledge bases
that would support these kinds of inferences.
The discourse relation definitions proposed by
Computational Linguistics (AC...
Tài liệu Báo cáo khoa học: Improved ecdysone receptor-based inducible gene regulation system doc
... of switches. The fold induction with this
new switch is higher when compared to the fold inductions
observed for CfVgRXR and CfVgRXRdel versions of
switches. The lower fold induction in the case ... ligand sensitivity and the CfE(CDEF) truncation
showed the maximum induction.
Rapid induction and turn off of reporter gene activity
through the G:CfE(DEF) + V:MmR(EF) switch
The best tw...
Tài liệu Báo cáo khoa học: Survival mechanisms of pathogenic Mycobacterium tuberculosis H37Rv ppt
... cyclopropanation was
shown to alter cording properties and reduce virulence
[14]. Using whole genome transpositional mutagenesis
techniques, 30 mutants of M. tuberculosis were selected
from a total screen ... advantage of selective receptor-mediated intracellu-
lar survival as a pathogenic strategy. It is possible that
the distinct routes of entry of M. tuberculosis result in
different cytoki...
Tài liệu Báo cáo khoa học: Oxidation inhibits amyloid fibril formation of transthyretin ppt
... MS instrument (Axima-CFR;
Shimadzu Biotech, Manchester, UK) utilized for post-
source decay experiments was purchased through a
Griffith University Infrastructure grant provided to
Simin D. Maleknia.
References
1 ... [5,6,37]. The WT contains methionine at posi-
tions )1 (methionine resulting from the recombinant
preparation) and 13. V30M TTR contains an
additional methionine at position 30...
Tài liệu Báo cáo khoa học: How does hepatitis C virus enter cells? pptx
... the serum up to
5 weeks postinfection. Thereafter, infection was cleared
without signs of liver inflammation.
The described cell culture systems are an important
breakthrough in HCV research and ... effect. These data
suggest, that clinical isolates can interact with SR-BI
through associated lipoproteins and not through E2.
LDL receptor
Most mammalian cells take up lipoprotein particles
su...
Tài liệu Báo cáo khóa học: Tungsten-containing aldehyde oxidoreductase of Eubacterium acidaminophilum ppt
... Frings, J. & Schink, B. (1999) Net synthesis of
acetate from CO
2
by Eubacterium acidaminophilum through the
glycine reductase pathway. FEMS Microbiol. Lett. 177, 1–6.
32. Roy, R., Mukund, S., ... J. Bacteriol. 181, 1171–1180.
33. Reitzer, L. & Schneider, B.L. (2001) Metabolic context and
possible physiological themes of sigma (54) -dependent genes in
Escherichia coli. Microbiol. Mo...