نتایج جستجو برای: trust region

تعداد نتایج: 594912  

Journal: :SIAM Journal on Optimization 1993
Andrew R. Conn Nicholas I. M. Gould Annick Sartenaer Philippe L. Toint

A class of trust region based algorithms is presented for the solution of nonlinear optimization problems with a convex feasible set. At variance with previously published analysis of this type, the theory presented allows for the use of general norms. Furthermore, the proposed algorithms do not require the explicit computation of the projected gradient, and can therefore be adapted to cases wh...

1993
Thai Quynh Phong Radu Horaud Adnan Yassine Dinh-Tuan Pham

In this paper W E present a method for robustly and accurately estimating the rotation and translation between a camera and a 3-D object f r o m point and line correspondences. First we devise an error function and second we show how to minimize this error function. The quadratic nature of this function is made possible by representing rotation and translation with a dual number quaternion. W e...

Journal: :PVLDB 2008
Sarana Nutanong Rui Zhang Egemen Tanin Lars Kulik

The moving k nearest neighbor (MkNN) query finds the k nearest neighbors of a moving query point continuously. The high potential of reducing the query processing cost as well as the large spectrum of associated applications have attracted considerable attention to this query type from the database community. This paper presents an incremental safe-region-based technique for answering MkNN quer...

2006
M. B. Gay Ducati

We present an exploratory QCD analysis of the neutrino structure functions in charged current DIS using the color dipole formalism. The dipole cross sections are taken from recent phenomenological/theoretical studies in deep inelastic inclusive production. The theoretical predictions are compared to the available experimental results in the small-x region, which has never been considered so far.

2017
Chih-Yang Hsia Ya Zhu Chih-Jen Lin

Œe main task in training a linear classi€er is to solve an unconstrained minimization problem. In applying an optimization method to obtain a model, typically we iteratively €nd a good direction and then decide a suitable step size. Past developments of extending optimization methods for large-scale linear classi€cation focus on €nding the direction, but liŠle aŠention has been paid on adjustin...

Journal: :Computers & Graphics 2016
Thomas Knott Torsten Kuhlen

Common approaches for the haptic rendering of complex scenarios employ multi-rate simulation schemes. Here, the collision queries or the simulation of a complex deformable object are often performed asynchronously at a lower frequency, while some kind of intermediate contact representation is used to simulate interactions at the haptic rate. However, this can produce artifacts in the haptic ren...

2008
J. C. Kosik

A new geomagnetic parameter was suggested twenty years ago by Y. Galperin, the Galperin L parameter, and it was introduced into the CNES Maglib for FrenchRussian projects in the exploration of the distant magnetosphere. The definition and the advantages of the Galperin L parameter are recalled in this brief paper. Unforeseen possibilities in the use of this parameter for mathematical models of ...

Journal: :International Journal of Business and Management 2015

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