8,004 research outputs found
A commentary on standardization in the Semantic Web, Common Logic and MultiAgent Systems
Given the ubiquity of the Web, the Semantic Web (SW) offers MultiAgent Systems (MAS) a most wide-ranging platform by which they could intercommunicate. It can be argued however that MAS require levels of logic that the current Semantic Web has yet to provide. As ISO Common Logic (CL) ISO/IEC IS 24707:2007 provides a firstorder logic capability for MAS in an interoperable way, it seems natural to investigate how CL may itself integrate with the SW thus providing a more expressive means by which MAS can interoperate effectively across the SW. A commentary is accordingly presented on how this may be achieved. Whilst it notes that certain limitations remain to be addressed, the commentary proposes that standardising the SW with CL provides the vehicle by which MAS can achieve their potential.</p
Digital Ecosystems: Ecosystem-Oriented Architectures
We view Digital Ecosystems to be the digital counterparts of biological
ecosystems. Here, we are concerned with the creation of these Digital
Ecosystems, exploiting the self-organising properties of biological ecosystems
to evolve high-level software applications. Therefore, we created the Digital
Ecosystem, a novel optimisation technique inspired by biological ecosystems,
where the optimisation works at two levels: a first optimisation, migration of
agents which are distributed in a decentralised peer-to-peer network, operating
continuously in time; this process feeds a second optimisation based on
evolutionary computing that operates locally on single peers and is aimed at
finding solutions to satisfy locally relevant constraints. The Digital
Ecosystem was then measured experimentally through simulations, with measures
originating from theoretical ecology, evaluating its likeness to biological
ecosystems. This included its responsiveness to requests for applications from
the user base, as a measure of the ecological succession (ecosystem maturity).
Overall, we have advanced the understanding of Digital Ecosystems, creating
Ecosystem-Oriented Architectures where the word ecosystem is more than just a
metaphor.Comment: 39 pages, 26 figures, journa
Business Process Retrieval Based on Behavioral Semantics
This paper develops a framework for retrieving business processes considering search requirements based on behavioral semantics properties; it presents a framework called "BeMantics" for retrieving business processes based on structural, linguistics, and behavioral semantics properties. The relevance of the framework is evaluated retrieving business processes from a repository, and collecting a set of relevant business processes manually issued by human judges. The "BeMantics" framework scored high precision values (0.717) but low recall values (0.558), which implies that even when the framework avoided false negatives, it prone to false positives. The highest pre- cision value was scored in the linguistic criterion showing that using semantic inference in the tasks comparison allowed to reduce around 23.6 % the number of false positives. Using semantic inference to compare tasks of business processes can improve the precision; but if the ontologies are from narrow and specific domains, they limit the semantic expressiveness obtained with ontologies from more general domains. Regarding the perform- ance, it can be improved by using a filter phase which indexes business processes taking into account behavioral semantics propertie
Intelligent business processes composition based on mas, semantic and cloud integration (IPCASCI)
[EN]Component reuse is one of the techniques that most clearly contributes to the
evolution of the software industry by providing efficient mechanisms to create quality
software. Reuse increases both software reliability, due to the fact that it uses
previously tested software components, and development productivity, and leads to a
clear reduction in cost.
Web services have become are an standard for application development on cloud
computing environments and are essential in business process development. These
services facilitate a software construction that is relatively fast and efficient, two
aspects which can be improved by defining suitable models of reuse. This research
work is intended to define a model which contains the construction requirements of
new services from service composition. To this end, the composition is based on
tested Web services and artificial intelligent tools at our disposal.
It is believed that a multi-agent architecture based on virtual organizations is a
suitable tool to facilitate the construction of cloud computing environments for
business processes from other existing environments, and with help from ontological
models as well as tools providing the standard BPEL (Business Process Execution
Language). In the context of this proposal, we must generate a new business process
from the available services in the platform, starting with the requirement
specifications that the process should meet. These specifications will be composed of a
semi-free description of requirements to describe the new service.
The virtual organizations based on a multi-agent system will manage the tasks
requiring intelligent behaviour. This system will analyse the input (textual description
of the proposal) in order to deconstruct it into computable functionalities, which will
be subsequently treated. Web services (or business processes) stored to be reused
have been created from the perspective of SOA architectures and associated with an
ontological component, which allows the multi-agent system (based on virtual
organizations) to identify the services to complete the reuse process.
The proposed model develops a service composition by applying a standard BPEL
once the services that will compose the solution business process have been
identified. This standard allows us to compose Web services in an easy way and
provides the advantage of a direct mapping from Business Process Management
Notation diagrams
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