Báo cáo khoa học: "Exploring Distributional Similarity Based Models for Query Spelling Correction" docx
Báo cáo khoa học: "Exploring Distributional Similarity Based Models for Query Spelling Correction" docx
...
Table 2. Performance results for different models
Table 2 details the performance scores for the
experiments, which shows that both of the two
distributional similarity- based models boost ... al., 1997). An investi-
gation on distributional similarity functions can
be found in (Lillian Lee, 1999).
3 Distributional Similarity- Based Mod-
els for Query Spellin...
Báo cáo khoa học: "A Simple, Similarity-based Model for Selectional Preferences" pdf
... experiments com-
paring the similarity- based model for selectional
preferences to Resnik’s WordNet -based model
and to an EM -based clustering model
3
. For the
similarity- based model we test the five ... band. Micro-
averages, uniform weights
of Resnik’s model are considerably higher than
both the EM -based and the similarity- based
models, which is unexpected. While EM -ba...
Báo cáo khoa học: "Directional Distributional Similarity for Lexical Expansion" pot
... prominent
applications of distributional similarity, namely
identifying lexical expansions. Lexical expansion
looks for terms whose meaning implies that of a
given target term, such as a query. It is widely
employed ... lexical variability in ap-
plications like Information Retrieval (IR), Infor-
mation Extraction (IE) and Question Answering
(QA). Often, distributional similarity me...
Báo cáo khoa học: "Scaling Distributional Similarity to Large Corpora" doc
... the best accuracy/efficiency trade-off.
2 Distributional Similarity
Measuring distributional similarity first requires
the extraction of context information for each of
the vocabulary terms from raw ... Curran (2005a; 2005b) found the
performance of SASH for distributional similarity
could be improved by replacing the initial random
ordering with a frequency based ordering. In...
Báo cáo khoa học: "An Endogeneous Corpus-Based Method for Structural Noun Phrase Disambiguation" pptx
... that most
often (125 cases/141 for rule [b], 50 cases/52 for rule
[c]) the correct parsing isolates the second
sub-group,noun2 adj for rule [b], noun2 prep noun3
for rule [c] (see the top left ... disambiguation rules for each of
the ambiguous parsing rules.
To work out the disambiguation rules, we
adopted an empirical approach based on large-scale
corpus experimentation....
Báo cáo khoa học: "Efficient Tree-based Approximation for Entailment Graph Learning" doc
... curve.
Maximal F
1
on the curve is .43 for Exact-graph, .41 for
TNF, and .34 for No-trans. AUC in the recall range 0-0.5
is .32 for Exact-graph, .31 for TNF, and .26 for No-trans.
Run-time of LP-relax ... Max-Trans-Graph and
Max-Trans-Forest (with an ILP solver) results in
nearly identical performance.
An ILP formulation for Max-Trans-Forest is sim-
ple – a transitive graph is a...
Báo cáo khoa học: "A Hierarchical Phrase-Based Model for Statistical Machine Translation" pptx
... distinction here between formally
syntax -based and linguistically syntax -based MT. A
system like that of Yamada and Knight (2001) is
both formally and linguistically syntax -based: for-
mally because ... standing
for X spanning f
j
i
. We choose b and β to balance
speed and performance on our development set. For
our experiments, we set b = 40, β = 10
−1
for X cells,
and b = 15, β...
Báo cáo khoa học: "A Trainable Rule-based Algorithm for Word Segmentation" pdf
... 1986). For a thorough discussion
of transformation -based learning, see Ramshaw and
Marcus (1996).
Brill's work provides a proof of viability of
transformation -based techniques in the form ... unsegmented
language.
2 Transformation -based
Segmentation
The key component of our trainable segmenta-
tion algorithm is Transformation -based Error-driven
Learning, the corpus -b...
Báo cáo khoa học: "An Unsupervised Morpheme-Based HMM for Hebrew Morphological Disambiguation" pdf
... HSpell wordlist
(Har’el and Kenigsberg, 2004).
3 Morpheme -Based Model for
Hebrew
3.1 Morpheme -Based HMM
The lexical items of word -based models are the
words of the language. The implication of ... rank analyses, based on the number
of disambiguated occurrences in the text, normal-
ized by the total number of occurrences for each
word. Their application – indexing for an inform...