unsupervised learning of arabic stemming
Báo cáo khoa học: "Unsupervised Learning of Arabic Stemming using a Parallel Corpus" pot
Ngày tải lên :
08/03/2014, 04:22
... Proceedings of the 40th Annual Meeting of the As-
sociation for Computational Linguistics (ACL), pages
255–262, July.
John Goldsmith. 2001. Unsupervised learning of the
morphology of a natural ... Evaluation : Arabic
Information Retrieval
Task Description:
Given a set of Arabic documents and an Arabic
query, find a list of documents relevant to the query,
and rank them by probability of relevance.
We ... multilingual text analysis tools via ro-
bust projection across aligned corpora.
Unsupervised Learning of Arabic Stemming using a Parallel Corpus
Monica Rogati
†
Computer Science Department,
Carnegie...
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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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Báo cáo khoa học: "Unsupervised Learning of Acoustic Sub-word Units" pot
Ngày tải lên :
08/03/2014, 01:20
... ML-SSS.
4.2 Unsupervised Learning of Sub-word Units
We used about 30 minutes of phonetically tran-
scribed Japanese speech from one speaker
6
provided
by Maekawa (2003) for our unsupervised learning
experiments. ... differ-
ent learning setups are tabulated. We also see how as
little as 5 minutes of speech is adequate for learning
the acoustic units.
2 An Improved and Fast SSS Algorithm
The improvement of the ... that the original application of SSS was for learning
Figure 1: Modified four-way split of a state s.
2. For each HMM state s, compute the gain in log-
likelihood (LL) of the speech by either a con-
textual...
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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: "Combination of Arabic Preprocessing Schemes for Statistical Machine Translation" ppt
Ngày tải lên :
20/02/2014, 11:21
... always an easy
task and often requires the use of a morphological
analyzer. One common example in Arabic nouns
is Broken Plurals. For example, one of the plu-
ral forms of the Arabic word
kAtb ‘writer’
is ... Inflections: Some of the inflec-
tional features in Arabic words are realized tem-
platically by applying a different pattern to the
Arabic root. As a result, extracting the lexeme (or
lemma) of an Arabic ... Section 3. D1 splits off the class of
conjunction clitics (w+ and f+). D2 is the same
as D1 plus splitting off the class of particles (l+,
k+, b+ and s+). Finally D3 splits off what D2
does in...
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