• Article  

      Classical methods in nonmonotonic reasoning 

      Dimopoulos, Yannis (1994)
      In this paper we present and compare some classical problem solving methods for computing the stable models of a general propositional logic program. In particular linear programming, propositional satisfiability, constraint ...
    • Article  

      Computational assessment of distributed decomposition methods for stochastic linear programs 

      Vladimirou, Hercules (1998)
      Incorporating uncertainty in optimization models gives rise to large, structured mathematical programs. Decomposition procedures are well-suited for parallelization, thus providing a promising venue for solving large ...
    • Conference Object  

      Distributed stochastic power control for time-varying long-term and short-term fading wireless networks 

      Olama, M. M.; Djouadi, S. M.; Charalambous, Charalambos D.; Sahyoun, S. (2007)
      In this paper, new time-varying wireless channel models that capture both the space and time variations of longterm and short-term fading wireless networks are developed. The proposed models are based on stochastic ...
    • Conference Object  

      Hierarchical approach for the bandwidth allocation, management and control in B-ISDN 

      Herzberg, Meir; Pitsillides, Andreas (Publ by IEEE, 1993)
      This paper adopts a hierarchical multilayer/ multilevel approach for the allocation, management and control of B-ISDN resources. This approach seems appropriate to present a vertical decomposition of control layers, having ...
    • Conference Object  

      Integer programs and valid inequalities for planning problems 

      Bockmayr, A.; Dimopoulos, Yannis (Springer Verlag, 2000)
      Part of the recent work in AI planning is concerned with the development of algorithms that regard planning as a combinato-rial search problem. The underlying representation language is basically propositional logic. While ...
    • Conference Object  

      Linear behaviour of term graph rewriting programs 

      Banach, Richard; Papadopoulos, George Angelos (ACM, 1995)
      The generalized term graph rewriting computational model is exploited to implement concurrent languages based on Girard's Linear Logic (LL). In particular a fragment of LL is identified which is able to serve as a `process ...
    • Article  

      On computing logic programs 

      Dimopoulos, Yannis (1996)
      In this paper we present and compare some classical problem-solving methods for computing the stable models of logic programs with negation. Using a graph theoretic representation of logic programs and their stable models, ...
    • Article  

      Stochastic linear programs with restricted recourse 

      Vladimirou, Hercules; Zenios, Stavros A. (1997)
      Stochastic programs with recourse provide an effective modeling paradigm for sequential decision problems with uncertain or noisy data, when uncertainty can be modeled by a discrete set of scenarios. In two-stage problems ...
    • Article  

      Stochastic linear programs with restricted recourse 

      Vladimirou, Hercules; Zenios, Stavros A. (1997)
      Stochastic programs with recourse provide an effective modeling paradigm for sequential decision problems with uncertain or noisy data, when uncertainty can be modeled by a discrete set of scenarios. In two-stage problems ...
    • Article  

      Stochastic power control for short-term flat fading wireless networks: Almost sure QoS measures 

      Charalambous, Charalambos D.; Denic, S. Z.; Djouadi, S. M.; Menemenlis, N. (2001)
      The power control of wireless networks is formulated using a stochastic optimal control framework, in which the evolution of the channel is described by stochastic differential equations. Under this scenario, average and ...
    • Conference Object  

      Stochastic power control for time-varying fading wireless communication networks 

      Olama, M. M.; Djouadi, S. M.; Charalambous, Charalambos D. (2005)
      The performance of stochastic optimal power control for time-varying fading channels, in which the evolution of the dynamical channel is described by stochastic differential equations, is determined. Both long-term and ...
    • Conference Object  

      Stochastic power control for time-varying lognormal fading wireless channels 

      Olama, M. M.; Shajaat, S. M.; Djouadi, S. M.; Charalambous, Charalambos D. (2005)
      The performance of stochastic optimal power control of time varying lognormal fading channels, in which the evolution of the dynamical channel is described by stochastic differential equations (SDE's), is determined. Unlike ...
    • Article  

      Stochastic power control for time-varying long-term fading wireless networks 

      Olama, M. M.; Djouadi, S. M.; Charalambous, Charalambos D. (2006)
      A new time-varying (TV) long-term fading (LTF) channel model which captures both the space and time variations of wireless systems is developed. The proposed TV LTF model is based on a stochastic differential equation ...
    • Article  

      Stochastic power control for wireless networks via SDEs: Probabilistic QoS measures 

      Charalambous, Charalambos D.; Djouadi, S. M.; Denic, S. Z. (2005)
      The power control of wireless networks is formulated using a stochastic optimal control framework, in which the evolution of the channel is described by stochastic differential equations (SDEs). The latter rapture the ...