Báo cáo khoa học: "Semi-supervised Training for the Averaged Perceptron POS Tagger" potx
Báo cáo khoa học: "Semi-supervised Training for the Averaged Perceptron POS Tagger" potx
... n is the number of features, α
i
is the
weight coefficient of the i
th
feature and φ
i
(C, T )
is the evaluation of the i
th
feature for context C
and tag T . In the averaged perceptron, the val-
ues ... iterative
training by the averaged perceptron algorithm.
The binary features describe the tag being pre-
dicted and its context. They can be derived from
any inf...
Báo cáo khoa học: "Medical treatment for the terminally ill: the ‘risk of unacceptable badness’"
... that they can make any decision
they want as an open-ended ideal. This puts them in the
position of being buyers in a consumer’s market. By
asking them to make a choice, they imply that their
authority ... long as the patient ‘looks viable, it is emotionally easier to
accept the pie in the sky bye and bye long shot cure’. If the
patient can just be maintained comfortably for long...
Tài liệu Báo cáo khoa học: "Unsupervised Search for The Optimal Segmentation for Statistical Machine Translation" doc
... computing for each word
the posterior probability of the generative model
after each possible binary segmentation (splitting)
of the word. If the highest-scoring split increases
the posterior ... segmentation metric that
takes into account both sides of the SMT
training corpus. We formulate the objec-
tive function as the posterior probability of
the training corpus ac...
Tài liệu Báo cáo khoa học: "Self-Training for Biomedical Parsing" doc
... Here we
show the f -score for four versions of the parser
as a function of number of self -training sen-
tences. The dashed line on the bottom is the
raw C/J parser with no self -training. At 80.4, ... 80.4, it
is clearly the worst of the lot. On the other hand,
it is already better than the 80.2% best previous
result for biomedical data. This is solely due to
the int...
Tài liệu Báo cáo khoa học: A role for the intersubunit disulfides of seminal RNase in the mechanism of its antitumor action docx
... plateau.
These data indicate that the cell sulfhydryls responsible
for the exchange with the protein disulfides are located in
the plasma membrane. Furthermore, they show that, as
proposed in the hypothesis ... leading cells to death. The
current model proposed for the mechanism of antitumour
action of BS-RNase is based on the ability of the protein
to resist the neutra...
Tài liệu Báo cáo khoa học: "Co-training for Predicting Emotions with Spoken Dialogue Data" pdf
... and 140 for the
test set (used to measure the performance). The
training set is randomly divided into two sets in
each iteration of the algorithm: One for training
and the other for development ... test set, taking the union of the set
of features selected to label the examples. We
used the 3 best features for PPV for the Emotional
Learner and the bes...
Báo cáo khoa học: New evidence for the role of calcium in the glycosidase reaction of GH43 arabinanases pot
... described above. The sam-
ples were incubated with both chelators for 24 h prior
to the thermal shift assays being performed. The T
m
values obtained for the native enzyme and for the
samples incubated ... In
the absence of the histidine residue, recognition and
stabilization of the substrate are not as efficient as for
the native enzyme, and the efficiency of the...
Báo cáo khoa học: Structural basis for the erythro-stereospecificity of the L-arginine oxygenase VioC in viomycin biosynthesis docx
... conformational control of the bound sub-
strate, which enforces a gauche(–) conformer for v
1
instead of the trans
conformers observed for the asparagine oxygenase AsnO and other mem-
bers of the ... trans to modify
the assembled peptide or to synthesize the building
blocks for the nonribosomal peptide synthesis [9,10]. In
the case of viomycin, the annotation of the...
Báo cáo khoa học: "Viterbi Training for PCFGs: Hardness Results and Competitiveness of Uniform Initialization" doc
... unsatisfiable formula,
using the reduction from §4 with the given algo-
rithm, and identify whether the value of the objec-
tive function is 1 or strictly less than 1. We get the
result that:
Theorem 4. The ... further
extends these results for other cases. §7 describes
the advantages in using uniform-at-random initial-
ization for Viterbi training. We relate these results
t...
Báo cáo khoa học: "Semantic Retrieval for the Accurate Identification of Relational Concepts in Massive Textbases" ppt
... clarifies
the effect of using the term ontology. Comparison
of X-2 and X-3 shows the effect of the event ex-
pression ontology. The results for X-3 indicate
the maximum performance of the current ... to be applied on the fly.
Another difficulty is that target information must
be formalized beforehand and each system is de-
signed for a specific task. For instance, an IE
syst...