Báo cáo khoa học: "Factoring Synchronous Grammars By Sorting" potx
Báo cáo khoa học: "Factoring Synchronous Grammars By Sorting" potx
... recognized in time less than Θ(n
2
).
2 Synchronous CFGs and permutation
trees
We begin by describing the synchronous CFG for-
malism, which is more rigorously defined by Aho
and Ullman (1972) and Satta ... A
2
be related by the bijection asso-
ciated with the source synchronous strings. Fur-
thermore, the bijective relation associated with the
target synchronous strings is obtai...
Báo cáo khoa học: "Learning Synchronous Grammars for Semantic Parsing with Lambda Calculus" docx
... results
to our knowledge on learning synchronous
grammars that generate logical forms. Using
statistical machine translation techniques, a
semantic parser based on a synchronous
context-free grammar ... successfully put into use in syntax-
based SMT are synchronous context-free gram-
mars (SCFG) (Wu, 1997) and synchronous tree-
substitution grammars (STSG) (Yamada and Knight,
2001...
Báo cáo khoa học: "FACTORING RECURSION AND DEPENDENCIES: AN ASPECT OF TREE ADJOINING GRAMMARS (TAG) AND A COMPARISON OF SOME FORMAL PROPERTIES OF TAGS, GPSGS, PLGS, AND LPGS " pot
...
dependencies that can or cannot be generated by
the different types
of
grammars, (2) the degree
of free word ordering permitted by different
grammars, and (3) parsing complexity of the
different ... up a set of structures, some of
which
are filtered out by transfotn~atlons in a
TG, by the
constraints
on
linking in
a PiG, and
by the constraints
introduced
via function...
Báo cáo khoa học: "Unifying Synchronous Tree-Adjoining Grammars and Tree Transducers via Bimorphisms" pptx
... relations defin-
able by tree transducers. In particular, the tree re-
lations definable by synchronous tree-substitution
grammars (STSG) were shown to be just those de-
finable by linear complete ... USA
shieber@deas.harvard.edu
Abstract
We place synchronous tree-adjoining
grammars and tree transducers in the
single overarching framework of bimor-
phisms, continuing the unification...
Tài liệu Báo cáo khoa học: Degradation of tropoelastin by matrix metalloproteinases – cleavage site specificities and release of matrikines pptx
... explained by the
fact that the GYGPG motif is preceded by eight
amino acids that could facilitate the adoption of an
active conformation and its stabilization. This has
also been suggested by Moroy ... ionization mode and reflectron mode by accumulat-
ing data from 1800 laser shots per spot. Data acquisition was
performed by flex control 3.0.101.1, which was controlled
by warplc 1....
Tài liệu Báo cáo khoa học: Perturbation of membranes by the amyloid b-peptide – a molecular dynamics study pptx
... normal and the vector defined by the first
methylene carbon and the terminal methyl carbon on
the acyl chain. A description of effective chain length
has been proposed by Petrache et al. [42] (therein
termed ... Membrane perturbation by Alzheimer’s Ab
FEBS Journal 276 (2009) 3060–3075 ª 2009 The Authors Journal compilation ª 2009 FEBS 3069
lipid chains elongate, as demonstrated by a sma...
Tài liệu Báo cáo khoa học: Amino acid discrimination by arginyl-tRNA synthetases as revealed by an examination of natural specificity variants doc
... quantified by
scintillation counting. Preparative aminoacylation reactions,
scaled to 100 lL, were allowed to reach a plateau, rapidly
extracted with phenol, and the aminoacylated tRNA was
collected by ... link under the acidic conditions of nuclease treat-
ment was confirmed by separate experiments. Radioactivity
was detected by phosphorimager analysis (PharosFX
Plus; Bio-Rad, Munich,...
Tài liệu Báo cáo khoa học: Upregulation of DR5 by proteasome inhibitors potently sensitizes glioma cells to TRAIL-induced apoptosis doc
... Hamburg, Germany) as described by
the manufacturer.
Statistics
Data are given as means ± SEM. For statistical compari-
son, a t-test or one-way ANOVA followed by a Tukey test
were employed using ... for excellent
technical assistance. This study was supported by
the Wilhelm Sander Stiftung (grant 2005.067.1) to
D. Ko
¨
gel and by Science Foundation Ireland to
J. H. M. Prehn.
Reference...
Tài liệu Báo cáo khoa học: "Enhanced word decomposition by calibrating the decision threshold of probabilistic models and using a model ensemble" pdf
... original result by 0.1185 on the test
set. Compared to its components PROMODES and
PROMODES-H the f-measure increased by 0.0228
and 0.0353 on the test set.
In short, we have shown that by combining
PROMODES ... t
ji
. It describes a word’s segmentation
by its morpheme boundaries and resulting letter
transitions within morphemes. A boundary vector
b
j
is found by evaluating each posi...
Tài liệu Báo cáo khoa học: "Using adaptor grammars to identify synergies in the unsupervised acquisition of linguistic structure" docx
... leads to adaptor grammars.
Informally, the units of generalization of adap-
tor grammars are entire subtrees, rather than just
local trees, as in PCFGs. Just as in tree substitu-
tion grammars, each ... in the grammars actually
used by the program they are expanded using new
non-adapted nonterminals that rewrite in a uniform
right-branching manner. That is, the adaptor gram-
mar used...
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