Results 31 to 40 of about 15,787 (57)

A review of portfolio planning: Models and systems [PDF]

open access: yes, 2003
In this chapter, we first provide an overview of a number of portfolio planning models which have been proposed and investigated over the last forty years.
Mitra, G   +3 more
core  

Constrained Optimization Involving Expensive Function Evaluations: A Sequential Approach [PDF]

open access: yes
This paper presents a new sequential method for constrained non-linear optimization problems.The principal characteristics of these problems are very time consuming function evaluations and the absence of derivative information.
Brekelmans, R.C.M.   +3 more
core  

Approximating networks, dynamic programming and stochastic approximation

open access: yes, 2000
Approximate solution of a general N-stage stochastic optimal control problem is considered. It is known that discretizing uniformly the state components in applying dynamic programming may lead this procedure to incur the 'curse of dimensionality ...
Zoppoli R   +4 more
core  

Matrix convex functions with applications to weighted centers for semidefinite programming [PDF]

open access: yes
In this paper, we develop various calculus rules for general smooth matrix-valued functions and for the class of matrix convex (or concave) functions first introduced by Loewner and Kraus in 1930s.
Zhang, S., Luo, Z-Q., Brinkhuis, J.
core  

Power Control and Clustering for Terrestrial and Aerial Users in D-MIMO Networks

open access: yes
While the majority of the D-MIMO studies consider dedicated networks serving only terrestrial users, this paper investigates the cluster formation and data power control problems for the uplink of D-MIMO networks that simultaneously serve terrestrial and
Freitas, Walter C.,   +4 more
core   +1 more source

On the neighbour vulnerability of recursive graphs

open access: yes, 2006
The vulnerability of the communication network measures the resistance of the network to disruption of operation after the failure of certain stations or communication links.
Aytaç A., Dündar P.
core  
Some of the next articles are maybe not open access.

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