Personal social networks are recently used to offer recommendations. Due to privacy concerns, privacy protection while generating accurate referrals is imperative. Since accuracy and privacy are conflicting goals, pro...
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ISBN:
(纸本)9783642106866
Personal social networks are recently used to offer recommendations. Due to privacy concerns, privacy protection while generating accurate referrals is imperative. Since accuracy and privacy are conflicting goals, providing accurate predictions with privacy is challenging. We investigate generating personal social networks-based referrals without greatly jeopardizing users' privacy using randomization techniques. We perform real data-based trials to evaluate the overall performance of our proposed schemes. We analyze our schemes in terms of privacy and efficiency. Our schemes make it possible to generate accurate recommendations on social networks efficiently while preserving users' privacy.
Agent-based simulation is being recognized as a useful tool for the study of social systems. It is based on the idea that agents can be used as a good abstraction of members of a society, and by simulating their inter...
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ISBN:
(纸本)9783642123832
Agent-based simulation is being recognized as a useful tool for the study of social systems. It is based on the idea that agents can be used as a good abstraction of members of a society, and by simulating their interactions, observe the emergent behavior. Usually, agent-based models for social simulation are rather simple, but there are more and more works that try to apply this technique for rather complex systems, both in the typology of the agents and their relationships, and in scalability. For this reason, software engineering techniques are required to facilitate the development of agent-based simulation systems. In this sense, it can be useful to consider agent-oriented methodologies, as they cope with these requirements. This work explores the application of a model-driven methodology for the development of MAS, INGENIAS. There are several advantages of this approach. One is the possibility to define specific modeling languages that are conceptually close to the domain-expert, in this case for simulation of social systems. This will facilitate the communication of multidisciplinary teams and, by generating code from models, the social scientist is alleviated from the concerns of programming for a simulation platform. This is illustrated with a case study of urban dynamics.
Product Service System (PSS) advocates an innovative business mode where manufacturers provide products in the form of services instead of mere entity offerings. This mode not only enhances the utilization rate of pro...
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ISBN:
(数字)9783642104305
ISBN:
(纸本)9783642104299
Product Service System (PSS) advocates an innovative business mode where manufacturers provide products in the form of services instead of mere entity offerings. This mode not only enhances the utilization rate of products and resources, but also improves the service levels throughout the whole product lifecycle. PSS extension to manufacturing environment results in Production Service System (PnSS), which forms a hierarchically organized service-oriented manufacturing alliance composed of manufacturers/suppliers with various production service capabilities to collaborate a customer order. The process of selecting the optimal production service providers for a PnSS is called Production Service System Configuration (PnSSC). It is difficult to apply a centralized optimization method for a PnSSC problem because the members participating into the PnSS are uncertain while most of them are not willing to submit their decision details to the centralized decision model. This paper therefore proposes an Analytical Target Cascading (ATC) based distributed configuration system, atcPortal, for PnSSC. Each service provider models their production capabilities as a web service hosted at local end while published at atcPortal, while the embedded ATC mechanism will coordinate all the related services to formulate the optimal PnSSC for a given customer order. This distributed optimization system avoids centralized modeling and optimization process and thus protects enterprise privacy.
Recent advances in technologies involved in CNC manufacturing systems have provided industry with the capability to machine complex products. However, there is still no guarantee for these advanced systems to manufact...
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ISBN:
(数字)9783642104305
ISBN:
(纸本)9783642104299
Recent advances in technologies involved in CNC manufacturing systems have provided industry with the capability to machine complex products. However, there is still no guarantee for these advanced systems to manufacture products to their required specification the first time. This results in large scrap rates of manufactured components and requires skilful resources (human/bespoke solutions) to adjust the involved processes. The solution to this problem is the development of a machine tool process control system which would be able to provide the corrective measures in-process. At the core of this system, is a kernel to map the information in the manufacturing CAx chain. Using the existing high level information on component design, machining processes, manufacturing resources and measurement, process control can be maintained. This leads to seamless information flow in the manufacturing process chain. This paper presents and describes a machine tool process information model. A computational platform for developing a machine tool process control system has then been discussed. This computational prototype has been further realised and demonstrated using a prismatic case study component.
Metrology processes used in the manufacture of large products include tool setting, product verification and flexible metrology enabled automation. The range of applications and instruments available makes the selecti...
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ISBN:
(数字)9783642104305
ISBN:
(纸本)9783642104299
Metrology processes used in the manufacture of large products include tool setting, product verification and flexible metrology enabled automation. The range of applications and instruments available makes the selection of the appropriate instrument for a given task highly complex. Since metrology is a key manufacturing process it should be considered in the early stages of design. This paper provides an overview of the important selection criteria for typical measurement processes and presents some novel selection strategies. Metrics which can be used to assess measurability are also discussed. A prototype instrument selection and measurability analysis application is presented with discussion of how this can be used as the basis for development of a more sophisticated measurement planning tool.
Supply chain's complexity and strong randomness affecting the robustness of the system, study the entire supply chain system, analysis of supply chain elements of the node enterprises, logistics, capital flow, inf...
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ISBN:
(纸本)9783642104299
Supply chain's complexity and strong randomness affecting the robustness of the system, study the entire supply chain system, analysis of supply chain elements of the node enterprises, logistics, capital flow, information flow, and their mutual relations and transfers between the state, with the addition of variable method, the use of partial differential equations to establish a supply chain system Markov chain model. Analysis of the economic crisis on the impact of supply chain systems, and make robust supply chain strategy under the situation of the economic crisis to optimize the operation.
This paper reports an experimental proof-of-concept of a new paradigm in the general field of Multi-Agent Systems, a Linked Multi-component Robotic System. The prototype system realizes a basic task in the general fra...
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ISBN:
(纸本)9783642124327
This paper reports an experimental proof-of-concept of a new paradigm in the general field of Multi-Agent Systems, a Linked Multi-component Robotic System. The prototype system realizes a basic task in the general framework of a multi-robot hose transportation system: the trasportation along a linear trajectory. Even this simple task illustrates some complexities inherent to the general task of hose transportation. Artificial Vision is used to perceive the state of the system composed of the agents and the hose. The robotic agents are autonomously controlled by means of an scalable control heuristic. The system is able to deploy and transport a passive object simulating a hose in straight line, avoiding the formation of loops and dragging between robots.
Control architectures for manufacturing cover a broad range of categories from hierarchical at one extreme to purely heterarchical on the other spanning a broad variety of solutions, from quasi-heterarchical structure...
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ISBN:
(纸本)9783642124327
Control architectures for manufacturing cover a broad range of categories from hierarchical at one extreme to purely heterarchical on the other spanning a broad variety of solutions, from quasi-heterarchical structures to self-organizing systems. This paper describes an agent-based framework that provides the tools and components for fast implementation and testing of various control structures in a manufacturing environment. Typical components include, for example, a generic agent for encapsulation of machine-level control, a configurable decision process for the agents, hierarchical or heterarchical control frameworks. Use of these predefined components enables rapid prototyping and instantiation of system-level control.
Digital-technologies based service-oriented enterprise networks (SOEN) are emerging. The performance optimization for SOEN is very complex. It is needed: first, to try to reduce an abstract service's waiting-numbe...
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ISBN:
(数字)9783642104305
ISBN:
(纸本)9783642104299
Digital-technologies based service-oriented enterprise networks (SOEN) are emerging. The performance optimization for SOEN is very complex. It is needed: first, to try to reduce an abstract service's waiting-number of its physical services;second, to optimize the service-orchestration-schemes of the physical services waited before. This paper introduces an uncertainty theory and genetic algorithm-based performance optimization method (UGPO) to solve these problems. The uncertainty theory of UGPO is used to determine an abstract service's waiting-number for its physical services. The genetic algorithm of UGPO is used to search for the best service-orchestration-scheme from a large number of potential combinatorial schemes by the physical services waited before. UGPO has made use of the information of the physical services' arriving rules and performance distribution functions thoroughly, which will improve the computational efficiency for the scheme design and performance optimization of the SOEN in digital enterprise environments.
In a more open world, the Web-based Information Systems (WIS) must be flexible and ready to be adaptable, extendable, accessible and operable by different people (or groups) who are in different places with different ...
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ISBN:
(纸本)9783642124327
In a more open world, the Web-based Information Systems (WIS) must be flexible and ready to be adaptable, extendable, accessible and operable by different people (or groups) who are in different places with different types of information (convergent systems). The convergence of systems is possible due to: (a) certain capacity for autonomy (software agents), (b) ability to use a common vocabulary for all convergent systems (ontologies);and (c) capacity for mediation between subsystems (traders). Moderns IS use ontologies as part of the design and implementation of their architecture. Traders are an essential part of these IS, where ontologies are required for them (traders) to facilitate integration. This paper describes the SOL-ERES trading service, a solution to carry out the mediation function within a multi-agent environmental information system. The data handled by the trader are defined by ontologies, as are the semantic description and content of the messages by which the trader communicates with the rest of the agents. An example to explain the functionality of the ontological trading agent is also introduced.
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