Asynchronous transfer mode (ATM) networks are scalable via a wide variety of physical link speeds and can be run in both the local and wide areas. Bandwidth reservation and quality of service guarantees make ATM attra...
详细信息
Asynchronous transfer mode (ATM) networks are scalable via a wide variety of physical link speeds and can be run in both the local and wide areas. Bandwidth reservation and quality of service guarantees make ATM attractive to deliver multimedia information in real-time. Existing protocol suites can be extended. However, they do not give access to those characteristics. Therefore, applications demand an ATM application programming interface (API) to take advantage of those features. This paper covers a special syntax mapping of the ATM API services on top of X/open Transport Interface (XTI) which is able to give applications access directly to the special quality and traffic services of an ATM network. A particular realization of the API on the XTI environment is proposed and implemented on the MacOS networking platform. It provides a flexible and modular design of the ATM networking. Finally, the paper concludes with one ATM-aware application (video on demand) which requires real-time streaming data.
Recent studies have shown that non-uniform cellular automata (CA), where cellular rules need not necessarily be identical, can be co-evolved to perform computational tasks. This paper extends these studies by generali...
详细信息
ISBN:
(纸本)0780329031
Recent studies have shown that non-uniform cellular automata (CA), where cellular rules need not necessarily be identical, can be co-evolved to perform computational tasks. This paper extends these studies by generalizing on a second aspect of CAs, namely their standard, homogeneous connectivity. It studies non-standard architectures, where each cell has a small, identical number of connections, yet not necessarily from its most immediate neighboring cells. It is shown that such architectures are computationally more efficient than standard architectures in solving global tasks, and also provide the reasoning for this. It is shown that one can successfully evolve non-standard architectures through a two-level evolutionary process, in which the cellular rules evolve concomitantly with the cellular connections.
This paper proposes an evolutionary design of a neural network architecture, with a one-dimensional linked list encoding scheme. In this scheme, neurons are arranged in one-dimensional array, and the order information...
详细信息
This paper proposes an evolutionary design of a neural network architecture, with a one-dimensional linked list encoding scheme. In this scheme, neurons are arranged in one-dimensional array, and the order informations of neurons play important roles in genetic operation. Due to one-dimensional structure, encoding from neural network architecture to genotype becomes easy, and genetic operation can be easily applied. To avoid the permutation problem, we choose evolutionary programming (EP) rather than genetic algorithm (GA), i.e., we apply mutation operators only in order to generate offspring. The proposed scheme is applied to XOR and 3-parity problems, and optimal neural networkarchitectures can be found with this encoding scheme.
In this paper we present an evolvable model of modular neural networks which are rich in autonomy and creativity. In order to build an artificial neural network which is rich in autonomy and creativity, we have adopte...
详细信息
In this paper we present an evolvable model of modular neural networks which are rich in autonomy and creativity. In order to build an artificial neural network which is rich in autonomy and creativity, we have adopted the ideas and methodologies of Artificial Life. This paper describes the concepts and methodologies for the evolvable model of modular neural networks, which will be able not only to develop new functionality spontaneously but also to grow and evolve its own structure autonomously. Although the ultimate goal of this model is to design the control system for such behavior-based robots as Khepera, we have attempted to apply the mechanism to a visual categorization task with handwritten digits. The evolutionary mechanism has shown a strong possibility to generate useful networkarchitectures from an initial set of randomly-connected networks.
This paper introduces an integrated network management system which is basically realized in the lab. It supports a multi-vendor environment with openarchitectures and standard interfaces. The design process for the ...
详细信息
ISBN:
(纸本)7505336355
This paper introduces an integrated network management system which is basically realized in the lab. It supports a multi-vendor environment with openarchitectures and standard interfaces. The design process for the system is described according to the standard of the telecommunication management network. At the operation system platform, the client/server structure, the TCP/IP protocol, Sybase database management system and Power Builder software are adopted. Object-oriented technology is employed for development. Based on the integrated network management system the configuration management, performance management and fault management of the telecommunication network can be implemented.
In this paper, we present a new language called ParCeL-1, dedicated to connectionist and explicitely parallel AI programming. ParCeL-1 is a language based on agents, not unlike actor languages. Its agents are autonomo...
详细信息
ISBN:
(纸本)0780333675
In this paper, we present a new language called ParCeL-1, dedicated to connectionist and explicitely parallel AI programming. ParCeL-1 is a language based on agents, not unlike actor languages. Its agents are autonomous and follow a computational model in which the communications are non-blocking and the communication scheme is explicit. ParCeL-1 has a parallel implementation and runs on several multi-processor architectures. We give an example of connectionist programming (the Kohonen map) and show several performance results on a Transputer based multi-processor architecture and on the Gray T3D parallel computer.
In this paper we report on a parallel/distributed virtual machine prototype called World-Wide Virtual Machine (WWVM) that is designed to attadc grand challenge problems beyond the capabilities of a single supercompute...
详细信息
Simulation tools improve the designer's understanding of the system beyond what intuition or analytical models alone can provide. In this article, we present, NAMS an automated approach for communication networks ...
详细信息
Simulation tools improve the designer's understanding of the system beyond what intuition or analytical models alone can provide. In this article, we present, NAMS an automated approach for communication networks modeling, simulation, and performance evaluation to provide an easy-to-use, flexible simulation tool for rapidly constructing a variety of `complete' network models. NAMS receives the configuration of the network to be modeled or simulated in a specific format, uses the built-in models for the key hardware devices and protocols in a network simulation tool, puts these models together using programming interfaces to form a high level network model representing the received network configuration, compiles the network model into an executable simulation, generates the simulation environment, generates an appropriate performance evaluation methodology, executes the simulation, and reports the performance indices back to the system operator. NAMS is intended to be open ended to the extent that new technology/protocol options can be introduced into the system without significant effort.
Parallel debugging focuses on solving four problems: nondeterminism, global states, communication related errors and performance debugging. PVM is a widely used programming environment for network of workstations, but...
详细信息
ISBN:
(纸本)0780335295
Parallel debugging focuses on solving four problems: nondeterminism, global states, communication related errors and performance debugging. PVM is a widely used programming environment for network of workstations, but it provides little support on debugging. The authors have developed an integrated parallel debugger (called BUSTER) for PVM programs running on workstation clusters. They introduce the ideas and implementation techniques of the debugger.
The parallel execution of processes over a distributed system is an objective, that, if realised, will provide access to a wealth of computational resources currently underutilised in many network environments. What i...
详细信息
The parallel execution of processes over a distributed system is an objective, that, if realised, will provide access to a wealth of computational resources currently underutilised in many network environments. What is lacking from current distributed systems is a flexible and user friendly facility for the creation of processes across a network of workstations in a transparent and easily controlled manner. The paper presents an original architecture of a remote process creation and execution facility designed and developed as part of a microkernel and client-server based distributed operating system. The most important feature of this facility is that it coordinates the cooperation of other kernel servers to create (locally or remotely) a process. It was demonstrated that this facility is very fast and, thus can be used efficiently to support parallel execution on a network of workstations.
暂无评论