Báo cáo khoa học: "Preserving Semantic Dependencies in Synchronous Tree Adjoining Grammar*" doc
Báo cáo khoa học: "Preserving Semantic Dependencies in Synchronous Tree Adjoining Grammar*" doc
... preserving semantic dependencies in
Isomorphic Synchronous Tree Adjoining Gram-
mar (ISTAG) (Shieber, 1994; Shieber and Sch-
abes, 1990), a variant of Tree Adjoining Gram-
mar (Joshi, 1985) in ... Preserving Semantic Dependencies in
Synchronous Tree Adjoining Grammar*
William Schuler
University of Pennsylvania
200 South 33rd Street
Philadelphia, PA 19104...
Báo cáo khoa học: "Optimal k-arization of Synchronous Tree-Adjoining Grammar" ppt
... Example of intertwined links that cannot be binarized. No two links can be isolated in both trees in a tree
pair. Note that in tree pair γ
1
, any set of three links may be isolated while in tree pair ... Preservation
Consider a STAG tree pair γ containing the set of
links Λ and two synchronous fragments α and β
with α containing links links(α) and β containing
links(β) (lin...
Báo cáo khoa học: "Sentence Planning as Description Using Tree Adjoining Grammar " pptx
... operations that combine pairs of trees, SUB-
STITUTION and ADJOINING. A TAG grammar consists of
a finite set
of ELEMENTARY
trees, which can be combined
by these substitution and adjoining operations ... out all distrac-
tors.) The tree set for/book/includes trees with definite
and indefinite determiners; since the hearer can uniquely
identify book19, the definite tree is select...
Báo cáo khoa học: "Issues Concerning Decoding with Synchronous Context-free Grammar" docx
... to, issues arising from having a large num-
ber of virtual nonterminals. We also compare bina-
rizing the grammar with filtering rules according to
scope, a concept introduced by Hopkins and Lang-
mead ... also inves-
tigate adding more flexibility to synchronous
context-free grammars by adding glue rules
and phrases.
1 Introduction
Synchronous context-free grammar (SCFG) is
widely used for...
Báo cáo khoa học: "Conditions on Consistency of Probabilistic Tree Adjoining Grammars*" doc
... defining a generating function
for the levels in a derivation tree. Each level
i in the TAG derivation tree then corresponds
to
Zi
in the Maxkov chain of branching pro-
6The numbers in parentheses ... and e to denote
the empty string. We use Xi to range over all i
nodes in the grammar.
3 Applying probability measures to
Tree Adjoining Languages
To gain some intuition...
Báo cáo khoa học: "Interpreting Semantic Relations in Noun Compounds via Verb Semantics" pdf
... for training and testing. The combined total
number of sentential contexts for our 453 NCs was
7,714, containing 1,165 distinct main verbs.
We next randomly split the NC data into 80%
training data ... them into binary NCs.
Another simplifying assumption we make is to re-
move NCs incorporating proper nouns since: (a)
the lexical resources we employ in this research
do not contain them in...
Báo cáo khoa học: "Classifying Semantic Relations in Bioscience Texts" pot
... sur-
rounding forms of the stem bind which signify
entities that can enter into molecular binding re-
lationships. In Srinivasan and Rindflesch (2002)
MeSH term co-occurrences within MEDLINE ar-
ticles ... containing it.
We used a large domain-specific lexical hi-
erarchy (MeSH, Medical Subject Headings
3
) to
map words into semantic categories. There are
about 19,000 unique terms in MeSH...
Báo cáo khoa học: "Modeling Topic Dependencies in Hierarchical Text Categorization" pot
... consti-
tutes our MCC baseline.
Regarding the reranker, we divided the training
set in two chunks of data: Train1 and Train2. The
binary classifiers are trained on Train1 and tested on
Train2 (and vice versa) ... (Child-free)
Figure 6: Learning curves of the reranking models using
STK in terms of MicroAverage-F1, according to increas-
ing training set (child-free setting).
0.365
0.375
0.38...
Báo cáo khoa học: "Character-Level Dependencies in Chinese: Usefulness and Learning" pot
... window.
s.char+i.char
s.h.char
s.rm.dprel
s.curtree
s.curtree+s.char
s
−1
.curtree+s.char
s.curroot.lm.curtree
s
−1
.curroot.lm.curtree
s.curroot.lm.curtree+s.char
s
−1
.curroot.lm.curtree+s.char
s.curtree+s.curroot.lm.curtree
s
−1
.curtree+s
−1
.curroot.lm.curtree
s.curtree+s.curroot.lm.curtree+s.char
s
−1
.curtree+s
−1
.curroot.lm.curtree+s.char
s
−1
.curtree+s
−1
.curroot.lm.curtree+i.char...
Báo cáo khoa học: "MULTILEVEL SEMANTIC ANALYSIS IN AN AUTOMATIC SPEECH UNDERSTANDING AND DIALOG SYSTEM" pptx
...
coach.l.2: "privat tutor, trainer in athletics"
CLASS: ACtingPerson
in
in. l.l: " ;in the evening"
CLASS: DURation
SELECTION: TIMe
in. l.2:
" ;in the room"
CLASS:
PLAce ... 2: Semantic Interpretation of " ;in the coech"
Although there are 4 possibilities for combining the words in
their different meanings only one possibility ( in. l...