Tài liệu Báo cáo khoa học: "BIDIRECTIONAL PARSING OF LEXICALIZED TREE ADJOINING GRAMMARS" pdf
Tài liệu Báo cáo khoa học: "BIDIRECTIONAL PARSING OF LEXICALIZED TREE ADJOINING GRAMMARS" pdf
...
Relevance of Lexicalization to Parsing. In
Proceedings of the 1st International Workshop on
Parsing Technologies.
Pittsburgh, PA. To also appear
under the title: Parsing with Lexicalized Tree
Adjoining ...
Lexicalized Tree Adjoining Grammars
(Schabes
et
al.,
1988) are a refinement of TAGs such that each
elementary tree is associated with a lexieal item,
call...
Tài liệu Báo cáo khoa học: "Prefix Probabilities from Stochastic Tree Adjoining Grammars*" pptx
...
initial
trees
and .A is a set of auxiliary trees. Trees in :TU.A
are also called elementary trees.
We refer to the root of an elementary tree t as
Rt.
Each auxiliary tree has exactly one distin- ... stochastic Tree Adjoining Grammar (STAG)
is represented by a tuple
(NT,
E,:T, .A, ¢) where
NT
is a set of nonterminal symbols, E is a set
of terminal symbols, 2: is a s...
Tài liệu Báo cáo khoa học: "Long-Distance Scrambling and Tree Adjoining Grammars" doc
... within the larger domain of lo-
cality (the elementary tree) , i.e., each clausal tree still
contains a verb and all of its arguments. Thus, in a
lexicalized TAG, the effects of long-distance movement ... of sentences like (2a) and (2b)
is similar to the approach proposed in section 4. They
also make use of a splitting of the auxiliary tree fl
of figure 2, though they...
Tài liệu Báo cáo khoa học: "Bayesian Symbol-Refined Tree Substitution Grammars for Syntactic Parsing" pptx
... and frequencies of
SR-TSG with those of TSG. The rule sizes of SR-
TSG and TSG are defined as the number of CFG
rules that the elementary tree contains. Figure 2
shows a histogram of the SR-TSG ... hierarchy. Ta-
ble 1 shows an example of the SR-TSG rule and its
backoff tree fragments as an illustration of this three-
level hierarchy. The topmost level of our model is a
dis...
Tài liệu Báo cáo khoa học: "Semantic Parsing with Bayesian Tree Transducers" doc
... class of tree transducers,
producing state -of- the-art semantic parsing re-
sults while remaining applicable to any do-
main employing probabilistic tree transducers.
1 Introduction
Semantic parsing ... pair, (b) a
tree transformation based mapping, and (c) a tree trans-
ducer that performs the mapping.
volve tree transformations either between two trees
or a tree and a str...
Tài liệu Báo cáo khoa học: "Deterministic Parsing of Syntactic Non-fluencies" docx
... the right edge of
the potential expunction site; and 2) the expunged part is
the left-hand member of a pair of copies, one on each side
of the editing signal. The copies may be of three types: ... corpus of over twenty hours of transcribed speech, in the
process of using the parser to search for various syntactic
constructions. Tht~ transcripts are of sociolinguistic
in...
Tài liệu Báo cáo khoa học: "A GENERALIZATION OF THE OFFLINE PARSABLE GRAMMARS" doc
... f'mite set of symbols, so there is
only a finite number of strings of given length L,
and it has a finite number of rules, so there is only
a finite number of possible parse trees of given
depth ...
Let C a be the set of pairs [A,B] such that A
B by a tree of depth n. Clearly C t is the set of
pairs [A,B] such that (A ) B) is a rule of G. Also,
Cn+ 1
is the...
Tài liệu Báo cáo khoa học: "The Role of Initiative in Tutorial Dialogue" pdf
... benefit of this annotation scheme is that in our
corpus the majority of turns can be automatically
labeled:
questions often ended in question marks;
commands
often started with verbs; a list of ... through a line of reasoning to a cor-
rect answer.
The second row of the table shows average per-
centage of initiative changes that were abdica-
tions. Abdications are the use of p...
Tài liệu Báo cáo khoa học: "Faster Parsing by Supertagger Adaptation" pptx
... as
costly as parsing a whole extra sentence.
Our goal is to increase parsing speed without
loss of accuracy. The technique we use is a form
of self-training, in which the output of the parser ... the accuracy
of a parsing pipeline by using the output of later
stages to constrain earlier stages.
The only work we are aware of that uses self-
training to improve the efficiency...
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