learning to extract relations from the web using minimal supervision
Tài liệu Báo cáo khoa học: "Coreference for Learning to Extract Relations: Yes, Virginia, Coreference Matters" ppt
Ngày tải lên :
20/02/2014, 04:20
... ability to learn the relations.
5.2 Precision
Results on precision are mixed. While for 4 of
the relations +Coref is higher, for the 6 others the
addition of coreference reduces precision. The ... match the mentions X=her and
Y=son, and build the relation instance
hasChild(Ethel Kennedy, Robert F. Kennedy Jr.).
During assessment, the annotator is asked
whether, in the context of the ... names, -Coref may need to use more
specific, complex patterns to learn the instance
(e.g. “Sue asked her son, Bob, to set the table”).
We expect the ability to run using a ‘denser,’ more
local...
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Báo cáo khoa học: "Semantic Class Learning from the Web with Hyponym Pattern Linkage Graphs" pdf
Ngày tải lên :
17/03/2014, 02:20
... used to instantiate the pattern. On the
first iteration, the pattern is given to Google as a
web query, and new class members are extracted
from the retrieved text snippets. We wanted the
system to ... 2005) also uses hyponym patterns to
extract class instances from the web and then evalu-
ates them further by computing mutual information
scores based on web queries.
The work by (Widdows and Dorow, ... seed
class member, issuing a web query to generate new
candidate instances, and adding these new instances
to the graph. A score is then assigned to every node
in the graph, using one of several different...
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Tài liệu Module 1: Introduction to Exchange 2000 and the Web Storage System pdf
Ngày tải lên :
11/12/2013, 14:15
... Stores
Storage Group A
Store
Store
Store
Store
Store
Store
Store
Store
Store
Store
Transaction Log
Transaction Log
Transaction Log
Storage Group B
Store
Store
Store
Store
Store
Store
Store
Store
Store
Store
Transaction ... items
in the Web Storage System, you cannot use the protocols to view items and
their properties. In these circumstances, you may want to use Web forms.
Web Form Functionality
By using Web forms, ... while they are streaming to the client
instead of waiting for the entire file to download.
Topic Objective
To list the database features
of the Web Storage System
Lead-in
Each Exchange store...
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Tài liệu How To Acquire Customers On The Web pptx
Ngày tải lên :
13/12/2013, 14:15
... CDnow Web site and actually
bought a CD, CDnow gave 3% of the
revenue from the sale back to the af-
filiate. That gave member Web sites
the inducement they needed to join
the program and provided them ... marketing
expenditures to set themselves out
from the crowd, inspire Web shop-
pers to visit their sites, and then get
them to actually make a purchase.
Many e-tailers, in fact, are averag-
ing more than $100 to ... various
compact discs to their cyber-
browsers that they could then pur-
chase at CDnow’s site. The links
that such sites placed next to their
music reviews gave their visitors the
option to effortlessly...
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Tài liệu Báo cáo khoa học: "Extraction and Approximation of Numerical Attributes from the Web" pdf
Ngày tải lên :
20/02/2014, 04:20
... also extract bounds and comparison informa-
tion in order to verify the extracted values and to
approximate the missing ones.
To allow us to extract attribute-specific informa-
tion, we provided the ... width 1.695m]’). We then extract new pat-
terns from the retrieved search engine snippets and
re-query the Web with the new patterns to obtain
more attribute values.
We provided the framework with ... with the ob-
ject (this can be estimated using any fixed corpus).
However, this is not essential.
We then extract new terms from the retrieved
web snippets and use these terms iteratively to re-
trieve...
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Tài liệu Báo cáo khoa học: "A Composite Kernel to Extract Relations between Entities with both Flat and Structured Features" ppt
Ngày tải lên :
20/02/2014, 12:20
... trees. Their tree kernels require the match-
able nodes to be at the same layer counting from
the root and to have an identical path of ascend-
ing nodes from the roots to the current nodes.
The ... other feature-based kernels. We can
also benefit from machine learning algorithms to
study how to solve the data imbalance and
sparseness issues from the learning algorithm
viewpoint. In the ... the occurrence of each
sub-tree without considering the layer and the
ancestors of the root node of the sub-tree, our
method is not limited by the constraints (identi-
cal layer and ancestors...
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Tài liệu Báo cáo khoa học: "Automatic Collection of Related Terms from the Web" pptx
Ngày tải lên :
20/02/2014, 16:20
... query. In case the query is a term, its hit
is the number of pages that contain the term on the
Web. We use the following notation.
H(x)= the number of pages that contain
the term x”
The number H ... that the system can be used
as a tool that helps us compile a glossary.
Second, we tried to examine the recall of the
system. It is impossible to calculate the actual re-
call value, because the ... defined. To estimate the recall, we first
prepared three to five target terms that should be
collected from each seed word, and then checked
whether each of the target terms was included in
the system...
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Báo cáo khoa học: "A DOM Tree Alignment Model for Mining Parallel Data from the Web" doc
Ngày tải lên :
08/03/2014, 02:21
...
that, using the new web mining scheme, the web
mining throughput is increased by 32%; (ii) The
quality of the mined data is improved. By lever-
aging the web pages’ HTML structures, the sen-
tence ... downloaded
from the Department of Justice of the Hong
Kong Special Administrative Region website.
Recently, web mining systems have been built
to automatically acquire parallel data from the
web. ... parallel data
from the web. The mining procedure is initiated
by acquiring Chinese website list.
We have downloaded about 300,000 URLs of
Chinese websites from the web directories at
cn.yahoo.com,...
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Báo cáo khoa học: "Automatic Acquisition of Ranked Qualia Structures from the Web" potx
Ngày tải lên :
08/03/2014, 02:21
... approach to automatically
learning qualia structures from the Web. Such an
approach is especially interesting either for lexicog-
894
matched. On the basis of these, we then calculate
the probability ... appropriate
queries to the web search engine and choosing the
article leading to the highest number of results. The
corresponding patterns are then matched in the 50
snippets returned by the search engine ... (Web- Jac) measure relies on
the web search engine to calculate the number of
documents in which x and y co-occur close to each
other, divided by the number of documents each one
occurs, i.e.
Web- Jac(x,...
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Báo cáo khoa học: "Question Answering System in the Web using the Web" doc
Ngày tải lên :
08/03/2014, 21:20
... meaning a phrase pattern.
Then, these patterns are searched in the Web
(using Google at the moment) and the system
extracts the first 100 document snippets created
by the search engine. Some ... system. It tries to
take advantage of the great amount of in-
formation existent in the World Wide
Web. Since Portuguese is one of the most
used languages in the web and the web
itself is a ... * L), through the
first 100 snippets resulting from the web search;
where F is the n-gram frequency, S is the score
of the search pattern that recovered the document
and L is the n-gram length....
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A Complete Guide for All Ages: Easy to understand information from the nation’s leaders in women’s health doc
Ngày tải lên :
14/03/2014, 12:20
... Straight-ahead information on the things we can do
to stay healthy, tests we should get to monitor our health, how to cope with disease,
and how to talk with our doctors. Simply put, how to take charge of ... hormone
therapy is started may be the key to
whether this therapy reduces your chanc-
es of getting heart disease. Most of the
women in the NIH study did not start
menopausal hormone therapy ... attack, the
injured area of the heart muscle is re-
placed by scar tissue. is weakens the
pumping action of the heart.
carry blood to the heart. Over time, this
buildup causes the arteries to...
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Báo cáo khoa học: "Mining Parenthetical Translations from the Web by Word Alignment" potx
Ngày tải lên :
17/03/2014, 02:20
... is too short
2
the extracted translation is too long
3
the extracted translation contains only the last name
*
the extracted term is completely wrong.
Note that Exact Match is a rather ... with top φ
2
In our modified version of the competitive link-
ing algorithm, the link score of a pair of words is
the sum of the φ
2
scores of the words themselves,
their prefixes and their ...
pairs, where the translation of the in-parenthesis
terms is a suffix of the pre-parenthesis text. The
lengths and frequency counts of the suffixes have
been used to determine what is the translation...
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Báo cáo khoa học: "Extracting Hypernym Pairs from the Web" potx
Ngày tải lên :
17/03/2014, 04:20
... hypernym relations from the web. We
compare our approach with hypernym ex-
traction from morphological clues and from
large text corpora. We show that the abun-
dance of available data on the web ... ap-
plied to large and very large text corpora. Today,
the web contains more data than the largest available
text corpus. For this reason, we are interested in em-
ploying the web for the extraction ... about whether the
size of the web allows to achieve meaningful results
with basic extraction techniques.
In section two we introduce the task, hypernym
extraction. Section three presents the results...
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Báo cáo khoa học: "Compiling French-Japanese Terminologies from the Web" pptx
Ngày tải lên :
17/03/2014, 22:20
... candidate related terms
from the corpus. Because the sentences compos-
ing the corpus are related to the seed, the same
should be true for the terms they contain. The
process of extracting terms is ... translation. They use a compositional
method to generate a set of translation candidates
from which they select the most likely translation
by using empirical evidence from the web.
The method ... precedence to the alignments
obtained with the more accurate methods. Con-
sequently, we start by adding the alignments in
FJ to the output set. Then, we augment it with
the alignments from FJJ...
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Báo cáo khoa học: "Extracting Sequences from the Web" pptx
Ngày tải lên :
23/03/2014, 16:20
... very first
the JJS the best
the RB JJS the very best
the ORD JJS the third biggest
the RBS JJ the most popular
the ORD RBS JJ the second least likely
Table 2: The patterns used by SEQ to detect ... both the numeric form of the ordinal and
the number spelled out (e.g the 2nd ” and the second ”).
We took up to 100 results per query.
288
Pattern Example
the ORD the fifth
the RB ORD the very ... features: the total con-
fidence totalConf(x, k, s|C) and the same total
confidence normalized to sum to 1 over all x, hold-
ing k and s constant. To train the classifier, we use
a set of extractions...
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