a hybrid hierarchical model
Tài liệu Báo cáo khoa học: "A Hybrid Hierarchical Model for Multi-Document Summarization" ppt
Ngày tải lên :
20/02/2014, 04:20
... 4: Manual Evaluations
Here, we manually evaluate quality of summaries,
a common DUC task. Human annotators are given
two sets of summary text for each document set,
generated from two approaches: ... this paper.
In this paper, we present a novel approach that
formulates MDS as a prediction problem based
on a two-step hybrid model: a generative model
for hierarchical topic discovery and a regression
model ... 12
Overall 24 66 2
Table 4: Frequency results of manual quality evaluations.
Results are statistically significant based on t-test. T ie indi-
cates evaluations where two summaries are rated equal.
according...
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Báo cáo khoa học: "A HYBRID REASONING MODEL FOR INDIRECT ANSWERS" pot
Ngày tải lên :
17/03/2014, 09:20
... of Henry and Rende Kahane,
pages 453-467, Urbana, 1973. University of Illi-
nois Press.
[Lascarides and Asher, 1991] Alex Lascarides and
Nicholas Asher. Discourse relations and defea-
sible ...
p may be false. Our model presupposes that Q's
question has been understood by R as intended by
Q, that Q's request was appropriate, and that Q
and R are engaged in a cooperative ... to instantiate the
existential variable ?q in
Use-obstacle.)
After the existential variable is instantiated,
plan recognition proceeds as described above at
SPlacing a limit on the maximum...
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Báo cáo khoa học: "A Discriminative Hierarchical Model for Fast Coreference at Large Scale" ppt
Ngày tải lên :
30/03/2014, 17:20
... expected
379
Jamie,Callan,
Jamie,Callan,
J.,Callan,
J.,Callan,
J.,Callan,
J.,Callan,
Jamie,Callan, Jamie,Callan,
v,
Jamie,Callan,
J.,Callan,
v,v,v,
J.,Callan,
J.,Callan,
J.,Callan,
J.,Callan,
Jamie,Callan,
Figure 2: Pairwise model ... Further,
our hierarchical approach provides a number of ad-
ditional advantages. First, the recursive nature of the
tree (arbitrary depth and width) allows the model to
adapt to different types of data and ... we can compare running times for any desired
level of accuracy. For example, on the 145k men-
tion dataset, at a 60% accuracy level the hierarchical
model is 19 times faster and at 90% accuracy...
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COMBINING EVIDENCE ON AIR POLLUTION AND DAILY MORTALITY FROM THE 20 LARGEST US CITIES: A HIERARCHICAL MODELLING STRATEGY potx
Ngày tải lên :
06/03/2014, 16:20
... pleased that a rigorous statistical analysis can produce a quantitative
relationship between levels of particles in outdoor air and the risk of death that has a straightforward
interpretation.
Analyses ... the authors' use of an approximate two-stage Bayesian analysis to be particularly
interesting. The approach is heuristically appealing and is in fact similar to the ad hoc two-stage
algorithm ... mortality in Birmingham, Alabama: a reappraisal. Technical Report. National
Institute of Statistical Science, Research Triangle Park.
Smith, T. C., Spiegelhalter, D. J. and Thomas, A. (1995) Bayesian...
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Báo cáo khoa học: "A Hierarchical Model of Web Summaries" docx
Ngày tải lên :
07/03/2014, 22:20
... averaging the mixing
proportions of all the training documents.
4 Hierarchical Bayesian Approach
The previous approach, while attractive in its sim-
plicity, makes a strong claim that a word can ... Computational
linguistics, pages 495–501.
Daniel Ramage, David Hall, Ramesh Nallapati, and
Christopher D. Manning. 200 9a. Labeled lda: A
supervised topic model for credit attribution in multi-
labeled corpora. In ... this
model, which we designate as hierarchical Labeled-
LDA (hLLDA), is shown in Algorithm 1. Just as
with Fixed Structure LDA
4
(Reisinger and Pa¸sca,
than with a hand-selected threshold, this raises...
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Báo cáo khoa học: "A Topic Similarity Model for Hierarchical Phrase-based Translation" ppt
Ngày tải lên :
23/03/2014, 14:20
... 2007.
Bilingual lsa-based adaptation for statistical machine
translation. Machine Translation, 21(4):187–207.
Hua Wu, Haifeng Wang, and Chengqing Zong. 2008.
Domain adaptation for statistical machine translation
with ... Proc.
HLT-NAACL 2003.
Philipp Koehn. 2004. Statistical significance tests for
machine translation evaluation. In Proc. EMNLP
2004.
David Mimno, Hanna M. Wallach, Jason Naradowsky,
David A. Smith, and Andrew ... 2008.
Thomas Hofmann. 1999. Probabilistic latent semantic
analysis. In Proc. of UAI 1999, pages 289–296.
Philipp Koehn, Franz Josef Och, and Daniel Marcu.
2003. Statistical phrase-based translation....
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A two-factor model (Duffie & Kan)
Ngày tải lên :
18/10/2013, 02:20
... first solve (1) and (2) simultaneously numerically, and then integrate (3) to obtain the function
A
.
32.3 Calibration
Let
0
0
be given. The value at time
t
of a bond maturing at time
t + ... ,
1
2
2
2
C
2
2
;
(3)
A 0 = 0;
Chapter 32
A two-factor model (Duffie & Kan)
Let us define:
X
1
t=
Interest rate at time
t
X
2
t=
Yield at time
t
on a bond maturing at time
t +
0
Let
X
1
0 ... CHAPTER 32. A two-factor model (Duffie & Kan)
321
32.2 Zero-coupon bond prices
The value at time
t T
of a zero-coupon bond paying $1 at time
T
is
B t; T =IE
"
exp
,
Z
T
t
X
1
u...
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Human Resource Portals and the Protean Career A Three-Factor Model
Ngày tải lên :
24/10/2013, 08:20
... portals. It is
essentially the organizational culture and employee attitudes toward change that
matter.
Organizational Factors
Organizational factors include organizational culture, opportunities ... employees, they may impact the remaining two. For instance, managers may
develop an organizational culture that facilitates the implementation of changes,
and specifically technological changes. To ... technology and particularly the Internet and
the World Wide Web has dramatically changed how organizations operate.
The most far-reaching changes to careers are coming from transformations of
work and...
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Shaking a box of sand I – a simple lattice model
Ngày tải lên :
01/11/2013, 08:20
... transition. As mentioned in an earlier chapter, the
density may attain values that are substantially higher than random close packing,
and quite close to the crystalline limit [131, 132]. An analogous ... investigations.
The model [174] is based on the generalisation of an earlier cellular automaton
(CA) model [22, 75, 83, 165] of an avalanching sandpile. This version of the model
contains only near-neighbour ... very asymmetrically shaped, and there is a strong preferred
orientation, the nonequilibrium regime of granular dynamics will carry all the usual
characteristics of ageing.
Now recall that that...
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Tài liệu Activity 4.2: Creating a Logical Data Model ppt
Ngày tải lên :
21/12/2013, 06:16
... 4.2: Creating a Logical Data
Model
In this activity, you will use the skills learned in this module to define the
relationships within a logical data model and produce a sample ER diagram for ...
the Ferguson and Bardell, Inc. case study.
In each of the two exercises in this activity, you analyze a single aspect of a
logical data design. At the end of each exercise, the class will discuss ...
cardinality and existence characteristics of each of the relationships defined in
Exercise 1.
!
Identify cardinality
1. For each relationship on your ER diagram, ask the question “How many...
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