Báo cáo khoa học: "Extracting Relations with Integrated Information Using Kernel Methods" pot
Báo cáo khoa học: "Extracting Relations with Integrated Information Using Kernel Methods" pot
... June 2005.
c
2005 Association for Computational Linguistics
Extracting Relations with Integrated Information Using Kernel Methods
Shubin Zhao Ralph Grishman
Department of Computer Science ... entity relations, in which syntactic
information from sentence tokenization, parsing
and deep dependency analysis is combined using
kernel methods. At each level, kernel f...
Tài liệu Báo cáo khoa học: "Extracting Semantic Orientations of Words using Spin Model" pdf
... corpus (approx. 1 ×10
11
words).
Without a corpus nor a thesaurus (but with glosses
in a dictionary), we obtained accuracy that is compa-
rable to Turney and Littman’s with a medium-sized
corpus. ... To
calculate the association strength of a word with pos-
itive (negative) seed words, they used the number
of hits returned by a search engine, with a query
consisting of the word and on...
Báo cáo khoa học: "Discovering Relations among Named Entities from Large Corpora" pot
... between the named entities.
Our experiments using one year of newspapers re-
veals not only that the relations among named enti-
ties could be detected with high recall and precision,
but also that ... necessary information. If many rela-
tions such as “Company A merged with Company
B” embedded in those documents could be gathered
and structured automatically, it would be very useful...
Báo cáo khoa học: "Extracting Semantic Roles from a Model of Eventualities" pot
... criteria. It is our
hypothesis that proliferation of roles is a natural
phenomenon caused by the specialized proper-
ties required by the interpretation of a predicate
within a specific semantic ... Most of the definitions have been based on
the referential properties that can be associated
with each role bearer (e.g. an AGENT is a
volitional animate entity). Even if this approach
is...
Báo cáo khoa học: "Text Segmentation with LDA-Based Fisher Kernel" ppt
... capture
semantic information would be useful, particularly
if they could be achieved with a ”semantic kernel
(Cristianini et al., 2001) , which computes the simi-
larity between texts by also considering relations ... much as
about 30% over word-frequency cosine similarity
with our methods, which shows Fisher kernel sim-
ilarity measure ,with latent topic information added
by L...
Báo cáo khoa học: "Incremental Parsing with Parallel Multiple Context-Free Grammars" potx
... production with the start cat-
egory S on the left hand side. The rhs(f, l) function
returns the constituent with index l of function f.
In the PREDICT rule, for each active item with dot be-
fore ... The Idea
Although PMCFG is not context-free it can be approx-
imated with an overgenerating context-free grammar.
The problem with this approach is that the parser pro-
duces many spur...
Báo cáo khoa học: "Resolving Personal Names in Email Using Context Expansion" pot
... somewhat with time. To recon-
struct that context, we temporally rank emails that
share at least one participant with e
m
in a time pe-
riod around e
m
and then expand each by its thread
(with duplicate ... collections offer greater scope for assembling
evidence to help with that task, but they pose addi-
tional challenges as well. With well over 100,000
unique email addresses in th...
Báo cáo khoa học: "Named Entity Recognition for Catalan Using Spanish Resources" potx
... w with which a classifier will oper-
ate. In the window, each word around w is codi-
fied with a set of primitive features, together with
its relative position to w. Each primitive feature
with ... manually com-
pleted, with an estimated cost of about 10 person
hours of a bilingual speaker (7.2 sec/word). Note
that translations are made with no context infor-
mation, and with no...
Báo cáo khoa học: "Improving the IBM Alignment Models Using Variational Bayes" pot
... and
4, with VB turned on for Model 1) on different
amounts of data. We found that the results for larger
data sizes were comparable to the results for ten
thousand sentence pairs, both with and without ... each language pair. We
ran three experiments, one with VB turned on for all
models, one with VB turned on for Model 1 only,
and one (the baseline) with VB turned off for all
model...
Báo cáo khoa học: "Supersense Tagging of Unknown Nouns using Semantic Similarity" pot
... the 1.6 test set was achieved with the SCORE
voting, without sharing or ranking penalties.
The extracted synonyms are filtered before contribut-
ing to the vote with their supersense(s). This ... proportion of their vocabu-
lary does not overlap with everyday vocabulary. Bur-
gun and Bodenreider (2001) compared an alignment of
WORDNET with the UMLS medical resource and found
only a ver...