5,931 research outputs found
The Coron System
Coron is a domain and platform independent, multi-purposed data mining
toolkit, which incorporates not only a rich collection of data mining
algorithms, but also allows a number of auxiliary operations. To the best of
our knowledge, a data mining toolkit designed specifically for itemset
extraction and association rule generation like Coron does not exist elsewhere.
Coron also provides support for preparing and filtering data, and for
interpreting the extracted units of knowledge
Local rapid stabilization for a Korteweg-de Vries equation with a Neumann boundary control on the right
This paper is devoted to the study of the rapid exponential stabilization
problem for a controlled Korteweg-de Vries equation on a bounded interval with
homogeneous Dirichlet boundary conditions and Neumann boundary control at the
right endpoint of the interval. For every noncritical length, we build a
feedback control law to force the solution of the closed-loop system to decay
exponentially to zero with arbitrarily prescribed decay rates, provided that
the initial datum is small enough. Our approach relies on the construction of a
suitable integral transform.Comment: 45 page
Fredholm Transform and Local Rapid Stabilization for a Kuramoto-Sivashinsky Equation
This paper is devoted to the study of the local rapid exponential
stabilization problem for a controlled Kuramoto-Sivashinsky equation on a
bounded interval. We build a feedback control law to force the solution of the
closed-loop system to decay exponentially to zero with arbitrarily prescribed
decay rates, provided that the initial datum is small enough. Our approach uses
a method we introduced for the rapid stabilization of a Korteweg-de Vries
equation. It relies on the construction of a suitable integral transform and
can be applied to many other equations
The minimality of the map x/|x| for weighted energy
In this paper, we investigate the minimality of the map
from the euclidean unit ball to its boundary
for weighted energy functionals of the type , where is a non-negative
function. We prove that in each of the two following cases: i) and is
non-decreasing, i)) is an integer, and with
, the map minimizes among the maps
in which coincide with
on . We also study the case where with and prove that
does not minimize for close to and when ,
for close to
Formal Analysis of CRT-RSA Vigilant's Countermeasure Against the BellCoRe Attack: A Pledge for Formal Methods in the Field of Implementation Security
In our paper at PROOFS 2013, we formally studied a few known countermeasures
to protect CRT-RSA against the BellCoRe fault injection attack. However, we
left Vigilant's countermeasure and its alleged repaired version by Coron et al.
as future work, because the arithmetical framework of our tool was not
sufficiently powerful. In this paper we bridge this gap and then use the same
methodology to formally study both versions of the countermeasure. We obtain
surprising results, which we believe demonstrate the importance of formal
analysis in the field of implementation security. Indeed, the original version
of Vigilant's countermeasure is actually broken, but not as much as Coron et
al. thought it was. As a consequence, the repaired version they proposed can be
simplified. It can actually be simplified even further as two of the nine
modular verifications happen to be unnecessary. Fortunately, we could formally
prove the simplified repaired version to be resistant to the BellCoRe attack,
which was considered a "challenging issue" by the authors of the countermeasure
themselves.Comment: arXiv admin note: substantial text overlap with arXiv:1401.817
Minimum time control of heterodirectional linear coupled hyperbolic PDEs
We solve the problem of stabilization of a class of linear first-order
hyperbolic systems featuring n rightward convecting transport PDEs and m
leftward convecting transport PDEs. Using the backstepping approach yields
solutions to stabilization in minimal time and observer based output feedback
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