Báo cáo khoa học: "Viterbi Training for PCFGs: Hardness Results and Competitiveness of Uniform Initialization" doc
Báo cáo khoa học: "Viterbi Training for PCFGs: Hardness Results and Competitiveness of Uniform Initialization" doc
... solving and even ap-
proximating Viterbi training for PCFGs is
NP-hard. We motivate the use of uniform-
at-random initialization for Viterbi EM as
an optimal initializer in absence of further
information ... hardness
result for Viterbi training. §5 extends this result to
a hardness result of approximation and §6 further
extends these results for other cases. §7 de...
Tài liệu Báo cáo khoa học: Kinetic basis for linking the first two enzymes of chlorophyll biosynthesis doc
... between the chelatase and methyltrans-
ferase has important implications for regulation of chlorophyll biosynthesis
and for the availability of magnesium protoporphyrin for plastid-to-nucleus
signalling.
Abbreviations
Mg ... another layer of complexity to both
the regulation of chlorophyll biosynthesis, and the
availability of MgP for signalling to the nucleus. We
sugg...
Tài liệu Báo cáo khoa học: "A Lexicon for Exploring Color, Concept and Emotion Associations in Language" doc
... In In The Proceedings of Eu-
ropean Languages and the Implementation of Com-
munication and Information Technologies (Elicit).
M. Bradley and P. Lang. 1999. Affective forms for
english words (anew): ... 1,163
Table 8: An overlap of concepts by part -of-
speech tag between CLEX and existing lexicons.
CLEX∩GI stands for the intersection of sets,
CLEX\GI denotes the differen...
Tài liệu Báo cáo khoa học: "Self-Training for Biomedical Parsing" doc
... Medline
abstracts used for self -training were chosen ran-
domly and thus span a large number of biomed-
ical sub-domains.
The results, the central results of this paper,
are shown in Figure 1. Clegg and Shepherd
(2005) ... McClosky et al., 2006b).
One possible use for this technique is for
parser adaptation — initially training the parser
on one type of data for which...
Tài liệu Báo cáo khoa học: "Co-training for Predicting Emotions with Spoken Dialogue Data" pdf
...
each iteration of the algorithm: One for training
and the other for development (65% and 35%
respectively). We train the learners with the
training set and we evaluate the performance to
pick ...
subset of features.
We have used 175 examples for the training set
(used to select the best features) and 140 for the
test set (used to measure the performance). The...
Báo cáo khoa học: "Medical treatment for the terminally ill: the ‘risk of unacceptable badness’"
... [2].
An unintended side effect of modern technological advances
has been the plausibility of maintaining moribund patients in a
state of suspended animation for prolonged and sometimes
indefinite periods ... treatment for the terminally ill: the ‘risk of unacceptable
badness’
David Crippen
Associate Professor, Director, Neurovascular ICU, Department of Critical Care Medicine,...
Tài liệu Báo cáo khoa học: "Improved Smoothing for N-gram Language Models Based on Ordinary Counts" doc
... backoff methods, all in-
stances of α = 1 and all instances of β = 0. The
pure backoff methods we consider are Katz back-
off and backoff absolute discounting, due to Ney
et al.
2
In Katz backoff, ... probability of a word w
n
, given the preceding
context w
1
. w
n−1
, to be the ratio of the num-
ber of occurrences in a training corpus of the N-
gram w
1
. w
n
to the total...
Báo cáo khoa học: Staphylococcus aureus elongation factor G – structure and analysis of a target for fusidic acid pdf
... helices A
V
and
B
V
at the surface of domain V. Gly621 and Gly617 are in the area of contact with the 1095 and 2473 regions of 23S RNA. The two helices
are facing the ribosome, and the four-stranded ... Pro404 and Pro406 are critical for this
conformation. His438, within hydrogen-bonding dis-
tance of Glu405 and the carbonyl group of Pro404,
also contributes to this pa...
Báo cáo khoa học: "A Procedure for Multi-Class Discrimination and some Linguistic Applications" pptx
... the instances of
C1 and the instances of C2 do not share a value.
• Two classes C1 and C2 are contrasted by a nu-
meric feature if the ranges of the instances of
C1 and of C2 do not overlap. ...
nature of the discrimination subtask, isolated this
part of the program, which was later extended with
the mechanisms for derived features and partial con-
trasts.
Som...
Báo cáo khoa học: "A System for Real-time Twitter Sentiment Analysis of 2012 U.S" pdf
... processing and statistical
sentiment modeling informed by, and contributing
to, an understanding of the cultural and political
practices at work through the use of Twitter.
3 The System
For accuracy ... delivering results instantly and
continuously. It offers the public, the
media, politicians and scholars a new and
timely perspective on the dynamics of the
elect...