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- Abdullah Konak, David W. Coit, Alice E. Smith
- Rel. Eng. & Sys. Safety
- 2006

Multi-objective formulations are realistic models for many complex engineering optimization problems. In many real-life problems, objectives under consideration conflict with each other, and optimizing a particular solution with respect to a single objective can result in unacceptable results with respect to the other objectives. A reasonable solution to a… (More)

- David W. Coit, Alice E. Smith
- IEEE Trans. Reliability
- 1996

& Conclusions-A problem specific genetic algorithm (GA) is developed and demonstrated to analyze series-parallel systems and to determine the optimal design configuration when there are multiple component choices available for each of several k-out-of-n:G subsystems. The problem is to select components and levels of redundancy to optimize some objective… (More)

- Berna Dengiz, Fulya Altiparmak, Alice E. Smith
- IEEE Trans. Evolutionary Computation
- 1997

—This paper presents a genetic algorithm (GA) with specialized encoding, initialization, and local search operators to optimize the design of communication network topologies. This NP-hard problem is often highly constrained so that random ini-tialization and standard genetic operators usually generate infea-sible networks. Another complication is that the… (More)

- Alice E. Smith
- 1993

This paper formulates Shewhart mean (X-bar) and range (R) control charts for diagnosis and interpretation by artificial neural networks. Neural networks are trained to discriminate between samples from probability distributions considered within control limits and those which have shifted in both location and variance. Neural networks are also trained to… (More)

- David M. Tate, Alice E. Smith
- Computers & OR
- 1995

Scope and Purpose There are a vast number of practical design and resource-allocation problems, in many different fields, where the decision to be made is a matching (or assignment) of items in one set to items in another, disjoint set. If the costs associated are simply constants for each possible pairing, this is the classical " Assignment Problem " , for… (More)

- Yun-Chia Liang, Alice E. Smith
- IEEE Trans. Reliability
- 2004

—This paper uses an ant colony meta-heuristic optimization method to solve the redundancy allocation problem (RAP). The RAP is a well known NP-hard problem which has been the subject of much prior work, generally in a restricted form where each subsystem must consist of identical components in parallel to make computations tractable. Meta-heuristic methods… (More)

This section begins with the motivation and general form of penalty functions as used in evolutionary computation. The main types of penalty function—constant, static, dynamic, and adaptive—are described within a common notation framework. References from the literature concerning these exterior penalty approaches are presented. The section concludes with a… (More)

- Jorge Valenzuela, Alice E. Smith
- J. Heuristics
- 2002

The paper shows that the use of a memetic algorithm (MA), a genetic algorithm (GA) combined with local search, synergistically combined with Lagrangian relaxation is effective and efficient for solving large unit commitment problems in electric power systems. It is shown that standard implementations of GA or MA are not competitive with the traditional… (More)

- Chat Srivaree-ratana, Abdullah Konak, Alice E. Smith
- Computers & OR
- 2002

When designing computer or communications network topologies, a common reliability measure is all-terminal reliability, the probability that all nodes (computers or terminals) can communicate with all others. Exact calculation of all-terminal reliability is an NP-hard problem, precluding its use during optimal network topology design, where this calculation… (More)

Unequal area facility layout problems comprise a class of extremely difficult and widely-applicable optimization problems, arising in many diverse areas. There are many variations on the basic formulation, involving alternative objective functions, side constraints, distance metrics, cost measures, and facility shapes. Applications include industrial… (More)