We describe a polarization-controlled free-space optical multistage interconnection network based on polarization-selective computer-generated holograms: optical elements that are capable of imposing arbitrary, independent phase functions on horizontally and vertically polarized monochromatic light. We investigate the design of a novel nonblocking space-division photonic switch architecture. Th...

This paper considers the integral multicommodity flow problem on directed graphs underlying two classes of multistage interconnection networks. In one direction, we consider 3-stage networks. Using existing results on (g, f)-factors of bipartite graphs, we show sufficient and necessary conditions for the existence of a solution when the network has at most 2 secondary switches. In contrast, the...

In this paper, performance of multistage interconnection network with wormhole routing and packet switching has been evaluated for cache-coherent shared-memory multiprocessors. The traac in cache-coherent systems is characterized by traac bursts, one-to-many and many-to-one traac, and small xed length messages. The evaluation is based on execution-driven simulation using various applications. T...

Design issues for the multistage Generalized Cube network are discussed in this paper. An analysis of the merits of 2-input/2-output interchange boxes versus 4-input/4-output crossbars for interconnection network implementation is made. The cost and performance of each network for the two switching node alternatives are examined. Discussion of the sui tabi l i ty of each approach for VLSI imple...

Reliability and performance of interconnection network systems significantly depends on the interconnection of its components, among other factors. The interconnection among switches, number of stages, and the types of switches normally determine the system configuration. System performance could be analyzed based on its redundant paths, information transition time, and its reliability. As the ...

This paper presents two neural network design strategies for incorporating a pri-ori knowledge about a given problem into the feedforward neural networks. These strategies aim at obtaining tractability and reliability for solving complex classiica-tion problems by neural networks. The rst type strategy based on multistage scheme decomposes the problem into manageable ones for reducing the compl...

In this study, we propose a multistage neural network metalearning technique for financial time series predication. First of all, an interval sampling technique is used to generate different training subsets. Based on the different training subsets, the different neural network models with different training subsets are then trained to formulate different base models. Subsequently, to improve t...

In this paper, a scalable variable-length packet switch using multistage interconnection network is proposed. The architecture consists of multiple non-buffer switch elements, interconnected with perfect shuffle pattern and with ring topology. Each input port is connected to a switch element in a different stage, and packets applied from these ports are routed to their destined output ports bas...

The 3-stage Clos network is generally considered the most basic multistage interconnecting network (MIN). The nonblocking property of such network has been extensively studied in the past. However, there are only a few lower bound results regarding wide-sense nonblocking. We show that in the classical circuit switching environment, to guarantee wide-sense nonblocking for large r, 2n− 1 center s...

Multistage interconnection networks (MINs) can be used to construct electro-optic switches. To implement crosstalkfree switching in such a switch, two I/O connecting paths cannot share a common switching element (SE). Thus, a permutation must be decomposed into partial permutations, each being routed through the switch without crosstalk. It was shown that any permutation can be decomposed into ...