unsupervised learning of acoustic
Unsupervised Learning of Narrative Event Chains docx
Ngày tải lên :
07/03/2014, 17:20
... candidates. Of the 740 cloze tests, 714 of the
removed events were present in their respective list
of guesses. This is encouraging as only 3.5% of the
events are unseen (or do not meet cutoff thresholds).
When ... thus a tuple of the event and the
typed dependency of the protagonist: (event, depen-
dency). A narrative chain is a set of narrative events
{e
1
, e
2
, , e
n
}, where n is the size of the chain, ... specifically on
learning narratives
1
, our work draws from two lines
of research in summarization and anaphora resolu-
tion. In summarization, topic signatures are a set
of terms indicative of a topic...
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Tài liệu Báo cáo khoa học: "Analyzing the Errors of Unsupervised Learning" docx
Ngày tải lên :
20/02/2014, 09:20
... of
EM contain valuable information about the incor-
rect biases of these models. However, EM is chang-
ing hundreds of thousands of parameters at once in a
non-trivial way, so we need a way of ... take a step back and present
a more statistical view of unsupervised learning in
the context of grammar induction. We identify four
types of error that a system can make: approxima-
tion, identifiability, ... face of label symmetry and ran
experiments exploring the effectiveness of EM as a
function of the amount of data. Finally, we hope that
setting up the general framework to understand the
errors of...
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A study on some major factors affecting English learning of grade 6 ethnic minority students of a mountainous secondary school to help them learn better
Ngày tải lên :
07/11/2012, 15:04
... the theories of second language learning:
definitions of language acquisition and theoretical background of language learning factors
in specific such as intelligence, personality, learning strategies, ... well as environment and context of learning.
2.2. Definitions of language acquisition
“Language acquisition is one of the most impressive and fascinating aspects of
human development” (Lightbown, ... process of the first language learning can be better understood if the social
dimension is included. Social factors have even more importance in the case of second
language learning because of the...
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Tài liệu Báo cáo khoa học: "Semi-supervised Learning of Dependency Parsers using Generalized Expectation Criteria" ppt
Ngày tải lên :
20/02/2014, 07:20
... x.
By relating the sum of the scores of all possible
trees to counting the number of spanning trees in a
graph, it can be shown that Z
x
is the determinant
of the Kirchoff matrix K, which is ... marginal
probability of a particular edge k → i (i.e. y
i
=k),
the score of any edge k
→ i such that k
= k is
set to 0. The determinant of the resulting modi-
fied Kirchoff matrix K
k→i
is then the sum of ... of constraints
accuracy
attach right baseline
DMV EM
DMV CE
CRF restricted GE
CRF GE
CRF GE human
Figure 2: Comparison of GE training of the re-
stricted and full CRFs with unsupervised learning...
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Tài liệu Báo cáo khoa học: "Using adaptor grammars to identify synergies in the unsupervised acquisition of linguistic structure" docx
Ngày tải lên :
20/02/2014, 09:20
... sequence of Colloc(ations), each
of which consists of a sequence of Words.
sible for an adaptor grammar to generate a sentence
as a sequence of collocations, each of which con-
sists of a sequence of ... expands to each of the 50 dis-
tinct phonemes present in the Brent corpus. This
grammar defines a Sentence to consist of a sequence
of Words, where a Word consists of a sequence of
Phonemes. The ... Johnson. 2005. Repre-
sentational bias in unsupervised learning of syllable
structure. In Proceedings of the Ninth Conference on
Computational Natural Language Learning (CoNLL-
2005), pages 112–119,...
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Tài liệu Báo cáo khoa học: "Generalized Expectation Criteria for Semi-Supervised Learning of Conditional Random Fields" pdf
Ngày tải lên :
20/02/2014, 09:20
... tractable
amount of time, since according to the Markov as-
2
Often these are more complicated than picking informative
features as proposed in this paper. One example of the kind of
operator used ... same method as HK06,
the first 33 of which are also shown in Table 1. We
use the same tokenization of the dataset as HK06,
and training/test /unsupervised sets of 100 instances
each. This data ... Semi-Supervised Learning of
Conditional Random Fields
Gideon S. Mann
Google Inc.
76 Ninth Avenue
New York, NY 10011
Andrew McCallum
Department of Computer Science
University of Massachusetts
140...
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Tài liệu Báo cáo khoa học: "Automatic learning of textual entailments with cross-pair similarities" ppt
Ngày tải lên :
20/02/2014, 12:20
... ex-
amples of the previous section. From the point of
view of bag -of- word methods, the pairs (T
1
, H
1
)
and (T
1
, H
2
) have both the same intra-pair simi-
larity since the sentences of T
1
and ... head of constituents. The
example of Fig. 1 shows that the placeholder
0
climbs up to the node governing all the NPs.
5.3 Pruning irrelevant information in large
text trees
Often only a portion of ... t, the set
of its nodes N (t), and a set of anchors, we build
a tree t
with all the nodes N
that are anchors or
ancestors of any anchor. Moreover, we add to t
the leaf nodes of the original...
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Tài liệu Báo cáo khoa học: "Semi-Supervised Learning of Partial Cognates using Bilingual Bootstrapping" doc
Ngày tải lên :
20/02/2014, 12:20
... algorithm to perform WSD on a set of
polysemous English words. They report an accu-
racy of 74%.
One of the most active researchers in identify-
ing cognates between pairs of languages is
Kondrak ... we
show that nonetheless machines are capable of
learning from new information, using an iterative
approach, similar to the learning process of hu-
mans. New information was collected and ... Studies of Intelligence, pp.44-
59.
Grzegorz Kondrak. 2001. Identifying Cognates by
Phonetic and Semantic Similarity. Proceedings of
NAACL 2001: 2nd Meeting of the North American
Chapter of the...
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Tài liệu Báo cáo khoa học: "Unsupervised Segmentation of Chinese Text by Use of Branching Entropy" pdf
Ngày tải lên :
20/02/2014, 12:20
... 0.6
0.7
0.8
0.9
1
10 100 1000 10000 100000 1e+06
size(KB)
recall
precision
434
Proceedings of the COLING/ACL 2006 Main Conference Poster Sessions, pages 428–435,
Sydney, July 2006.
c
2006...
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