Agens Faber: Toward a Theory of Artefacts for MAS

Human intelligence has evolved along with the use of more and more sophisticated tools, allowing Homo Faber (from Homo Habilis to Homo Sapiens Sapiens) to cope with environment changes, as well as to adapt the environment to his needs. Analogously, in this seminal paper we introduce the notion of Agens Faber, conveying the idea that agent intelligence should not be considered as separated by the agent ability to perceive and affect the environment—and so, that agent intelligence is strictly related to the artefacts that enable, mediate and govern any agent (intelligent) activity.

Along this line, we first discuss the notion of artefact for MAS in general, then we try to devise out the admissible / required / desirable features of an artefact for MAS. We elaborate on the many sorts of possible relations between agents and artefacts, focusing in particular on the issue of the rational exploitation of artefacts, and also rough out a possible taxonomy of artefacts for MAS.     

基于Agent的分布式查询优化研究

Internet上异构的软硬件环境以及多种并行机制对分布式查询优化技术提出了新的挑战，文章将分布式人工智能与数据库管理系统两个研究领域相结合，给出了基于Agent的分布式查询优化系统模型，在该系统中，Agent采用了典型的慎思型体系结构，即BDI模.Agent具有信念库，目标库并在此基础上进行学习和推理，多个Agent之间通过协调，协作以及协商以支持分布式数据库系统的动态查询优化和规划的执行，提高系统的查询效率。     

基于MAS的分布式制造资源集成系统的动态控制元结构的研究

针对分布式制造资源集成系统的需求和特性,将控制需求分析方法和功能需求分析方法结合起来,提出一种新的控制结构:动态控制元结构,从理论上解决复杂的"人造系统"的构造方法.并以该方法为原则,构建了一个基于MAS的分布式制造系统的控制结构,利用该方法构建的复杂系统,既能满足功能的需要,又使系统具有可控、可观等控制性能,以此来减少构建系统的成本和因反复调试而花费的时间.     

智能虚拟环境中基于MAS的智能Agent体系结构

智能虚拟环境是人工智能和虚拟现实相结合的产物。由于多Agent系统具有可扩展性、自治性、主动性、可重构性和敏捷性等特点,已成为目前最感兴趣的AI技术之一。本文提出一种IVE中基于多Agent系统的智能Agent体系结构,着重于智能Agent内部机制的研究与设计,通过Agent的内部机制来提升系统的整体性能。     

17O MAS NMR study of 12-molybdophosphoric acid

¹⁷O MAS NMR spectra for¹⁷O enriched solid heteropoly acid H₃PMo₁₂O₄₀ are reported. The oxygen exchange between solid H₃PMo₁₂ ¹⁷O₄₀ and H₂ ¹⁶O vapor at 200–250°C is shown to be accompanied by fast mixing of terminal Mo=O and bridging Mo-O-Mo oxygens in the Keggin unit. The oxygen exchange in H₃PMo₁₂ ¹⁷O₄₀ is much faster than in H₃PW₁₂ ¹⁷O₄₀ in solution as well as in the gas phase.     

Characterization of pedicel,paper, and larval silk from nest ofPolistes annularis (L.)

The pedicel, nest paper, and larval silk ofPolistes annularis nests were analyzed by high-resolution solid-state [¹³C]NMR. The pedicel was found to have a high nitrogen content (11%), and the NMR spectra indicated that it is a mixture of carbohydrate and protein. The pedicel protein has an amino acid composition that is very rich in glycine, alanine, serine, and proline (67% of identified residues), similar to that of some insect silks. Solid-state [¹³C]NMR indicated that the nest paper is composed predominantly of cellulose. Silk, spun by matureP. annularis larvae, was shown by [¹³C] NMR and amino acid analysis to be a protein very high in serine and alanine (53%), but the amino acid composition is distinct from that of the pedicel protein.     

可信网络中基于信誉和风险评估的动态信任模型*

针对可信网络不能有效处理恶意节点攻击的问题,综合考虑信任度评估的动态性和风险性,提出一种新的基于信誉和风险评估的动态信任模型。该模型引入惩罚机制、风险机制和推荐实体信任度更新机制,以评估信任关系的复杂性,通过构建直接信任树以存储节点的交互关系,并采用改进的回溯法寻找最佳推荐路径。仿真结果表明,该模型在有效抑制恶意节点上较已有模型有一定的改进。     

Consensus of Fractional‐Order Uncertain Multi‐Agent Systems Based on Output Feedback

This paper is devoted to the consensus protocol design for a set of agents with fractional‐order uncertainty dynamics where the fractional order α satisfies 0 < α < 2. For multi‐agent systems (MASs) with fixed undirected topology, a distributed static output feedback protocol is proposed with an undetermined system matrix. Based on model transformation and fractional‐order stability theory, sufficient conditions are derived to ensure the consensus of MASs in terms of linear matrix inequalities (LMIs). Finally, a simulation example is employed to validate the effectiveness of the proposed consensus protocol.     

基于嵌套网的JADE建模

良好的形式化建模方法是大规模开发和应用多Agent系统(MAS)的必要条件之一,使用多层的嵌套网对JADE进行层次化建模,给出面向对象的MAS与NP-nets之间的对照关系。指出通过引入层次结构,不仅能有效地控制状态空间的规模,而且能通过网托肯的嵌套方式克服Petri网结构演化的困难。     

从应用的角度评估MAS体系结构风格

近年来,Agent技术已成为开发复杂系统的一项可行技术,但对MAS体系结构的研究仍然面临着一定的挑战。本文从已有的MAS体系结构风格和开发框架出发,对MAS体系结构风格进行了分析、提取和归类,从应用角度提出了一个评估MAS体系结构风格的框架,并通过两个案例说明了如何利用评估结果为具体应用选择合适的风格。