information from the web
Báo cáo khoa học: "Unsupervised Relation Extraction by Mining Wikipedia Texts Using Information from the Web" pdf
Ngày tải lên :
23/03/2014, 16:21
... leveraging the vast size of the
Web. Our hypothesis is that there exist some key
terms and patterns that provide clues to the rela-
tions between pairs. From the snippets retrieved
by the search ... heterogeneous text on
the Web. Therefore, we do not parse informa-
tion from the Web corpus, but from well written
texts. Particularly, we specifically examine unsu-
pervised relation extraction from existing ... two kinds: dependency pat-
terns from dependency analysis of sentences in
Wikipedia, and surface patterns generated from
highly redundant information from the Web.
The main contributions of this...
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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
... each kind. These patterns are the only
attribute-specific resource in our framework.
Value extraction. The first pattern group,
P
values
, allows extraction of the attribute values
from the Web. All ... 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 ... value for the given
object. During the first stage it is possible that
we directly extract from the text a set of values
for the requested object. The bounds processing
step rejects some of these...
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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 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 (x) can be used ... half
(Evaluation II) in Table 2 shows the result.
S: the target term was collected by the system.
F: the target term was removed in the filtering step.
A: the target term existed in the compiled corpus,
but ... automatic term extrac-
tion.
C: the target term existed in the collected web
pages, but did not exist in the compiled corpus.
R: the target term did not exist on the collected web
pages.
Only 43 terms...
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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 ... English-Chinese 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 ...
(1) Given a web site, the root page and web
pages directly linked from the root page are
downloaded. Then for each of the
downloaded web page, all of its anchor texts
(i.e. the hyperlinked...
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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
... coefficient (Web- Jac), the Pointwise
Mutual Information (Web- PMI) and the conditional
probability (Web- P). We also present a version of
the conditional probability which does not use the
Web but merely ... (not calculated over
the Web) as well as the conditional probability cal-
culated over the Web (Web- P) delivered the best re-
sults, while the PMI-based ranking measure yielded
the worst results. ... 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...
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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
... raised the risk of stroke and
blood clots in the legs and lungs.
Researchers continue to study this issue.
e age at which menopausal hormone
therapy is started may be the key to
whether this therapy ... the
women in the NIH study did not start
menopausal hormone therapy until after
the age of 60, yet menopause happens for
most women after the age of 45. Some
experts think that many of the ... heart 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...
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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
... 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 suffixes.
In addition ...
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 ... C ≥ 2 E + K, where C is the length of the
Chinese text, E is the length of the English text in
the parentheses and K is a constant (we used K=6
in our experiments). The lengths C and E are...
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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
... 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, 2002) on lex-
ical ... 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 ... progresses. Initially, the seed is the only
trusted class member and the only vertex in the
graph. The bootstrapping process begins by instan-
tiating the doubly-anchored pattern with the seed
class...
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Báo cáo khoa học: "Extracting Hypernym Pairs from the Web" potx
Ngày tải lên :
17/03/2014, 04:20
... 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 enables
obtaining ... reason, we are interested in em-
ploying the web for the extraction of hypernym re-
lations. We are especially curious about whether the
size of the web allows to achieve meaningful results
with ... the two web ex-
periments and a combination of the best web ap-
proach with the morphological approach. The con-
junctive web pattern N en N rates best, because of its
high frequency. The recall...
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Báo cáo khoa học: "Compiling French-Japanese Terminologies from the Web" pptx
Ngày tải lên :
17/03/2014, 22:20
... 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 ...
around the seed.
2.2 Automatic Term Recognition
The next step is to extract candidate related terms
from the corpus. Because the sentences compos-
ing the corpus are related to the seed, the ... 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
... Example
the ORD the fifth
the RB ORD the 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 ... some cases, the ordering rela-
tion of the sequence name was ambiguous (e.g.,
2
We queried for both the numeric form of the ordinal and
the number spelled out (e.g the 2nd ” and the second ”).
We ... extractions.
We then randomly sampled and manually la-
beled 2, 000 of these extractions for evaluation.
We did a Web search to verify the correctness of
the sequence name s and that x is the kth item in
the...
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Báo cáo khoa học: "Learning to Extract Relations from the Web using Minimal Supervision" ppt
Ngày tải lên :
23/03/2014, 18:20
... computed as the product of the
weights of all the tokens in the sequence. The aim
of this new weighting scheme, as detailed in the next
section, is to eliminate the bias caused by the special
structure ... the acquisition relationship coincide with
the two arguments. They do not contribute any
bias, since they are replaced with the generic tags
e
1
and e
2
in all sentences from the bag. There
are ... containing a
1
and a
2
in
the same sentence”.
The returned documents (limited by Google to
the first 1000) are downloaded, and then the text
is extracted using the HTML parser from the Java
Swing package....
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Tài liệu How to use the Web to look up information on hacking ppt
Ngày tải lên :
23/12/2013, 19:15
... to the Web sites listed at the end of this
Guide. Not only do they carry archives of these Guides, they carry a lot of other valuable
information for the newbie hacker, as well as links to other ... some people take the shortcut into hacking. They get their phriends to give them a
bunch of canned break-in programs. Then they try them on one computer after another until they
stumble into ... other technical
documents from the Web. Besides, the Web stuff is free! <Geek mode off>
The most fantastic Web resource for the aspiring geek, er, hacker, is the RFCs. RFC stands for
"Request...
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Báo cáo khoa học: Subunit sequences of the 4 · 6-mer hemocyanin from the golden orb-web spider, Nephila inaurata Intramolecular evolution of the chelicerate hemocyanin subunits pot
Ngày tải lên :
08/03/2014, 08:20
... assuming that the LpoHc2 and the a-subunits of
N. inaurata and E. californicum on the one hand, and
TtrHcA and the arachnid g-subunits on the other hand are
orthologous proteins (see above). The fossil ... allows the unambiguous assignment to
distinct subunit types. The orthologous subunits of these
species share 69.1–76.2% of their amino acids, with the a
subunits being the most conserved and the ... studies
The web- based tools provided by the ExPASy Molecular
Biology Server of the Swiss Institute of Bioinformatics
(http://www.expasy.org) and the program
GENEDOC
2.6
[25] were used for the analyses...
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Security Risk Management: Building an Information Security Risk Management Program from the Ground Up doc
Ngày tải lên :
23/03/2014, 03:20
... customers
because they have to call support every time they lock out their account. The support man-
agers are looking for other ways to increase the efficiency, so they have recommended that the
number ... analysis. The majority of the chapter is spent
framing out a qualitative risk measure that accounts for the sensitivity of the
resource, the severity of the vulnerability, and the likelihood the threat ... 19
Looking Inside the Perimeter
Another im por tant development in the informa tion security fi eld is the shift from
focusing purely on securing the perimeter. Traditional information security...
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