Abstract

ELALOUF, Amir; LEVNER, Eugene  and  CHENG, T.C.E.. Efficient Routing of Mobile Agents in a Stochastic Network. Polibits [online]. 2013, n.47, pp.61-66. ISSN 1870-9044.

Mobile agents are autonomous programs that may be dispatched through computer networks. Using a mobile agent is a potentially efficient method to perform transactions and retrieve information in networks. Unknown congestion in a network causes uncertainty in the routing times of mobile agents so the routing of mobile agents cannot rely solely on the average travel time. In this paper we deal with a given stochastic network in which the mobile agent routing time is a random variable. Given pre-specified values R and PR, the objective is to find the path with the minimum expected time under the constraint that the probability that the path time is less than R is at least PR. We show that this problem is NP-hard, and construct an exact pseudo-polynomial algorithm and an ε-approximation algorithm (FPTAS) for the problem.

Keywords : Agent-based architecture; fast routing algorithm; FPTAS; stochastic routing.

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