Analysis of global information sharing in hyper-heuristics for different dynamic environments

2015 ◽  
Author(s):  
Stefan van der Stockt ◽  
Andries P. Engelbrecht
Keyword(s):  
Information Sharing ◽  
Dynamic Environments ◽  
Global Information

An overview of search strategies in distributed environments

2013 ◽  
Vol 29 (3) ◽  
pp. 281-313 ◽  
Author(s):  
E. Del Val ◽  
M. Rebollo ◽  
V. Botti
Keyword(s):  
Dynamic Environments ◽  
System Structure ◽  
Search Process ◽  
Global Information ◽  
Distributed Environments ◽  
Multi Agent Systems ◽  
Agent Systems ◽  
Service Oriented ◽  
Multi Agent ◽  
Proper Performance

AbstractDistributed systems are populated by a large number of heterogeneous entities that join and leave the systems dynamically. These entities act as clients and providers and interact with each other in order to get a resource or to achieve a goal. To facilitate the collaboration between entities, the system should provide mechanisms to manage the information about which entities or resources are available in the system at a certain moment, as well as how to locate them in an efficient way. However, this is not an easy task in open and dynamic environments where there are changes in the available resources and global information is not always available. In this paper, we present a comprehensive vision of search in distributed environments. This review not only considers the approaches of the peer-to-peer area, but also the approaches from three more areas: service-oriented environments, multi-agent systems, and complex networks. In these areas, the search for resources, services, or entities plays a key role for the proper performance of the systems built on them. The aim of this analysis is to compare approaches from these areas taking into account the underlying system structure and the algorithms or strategies that participate in the search process.

Success factors in hospital network performance: evidence from Korea

2007 ◽  
Vol 20 (3) ◽  
pp. 141-152 ◽  
Author(s):  
Kwang-Jum Kim ◽  
Lawton R Burns
Keyword(s):  
Information Sharing ◽  
Network Performance ◽  
Success Factors ◽  
Dynamic Environments ◽  
Collaborative Networks ◽  
Cooperative Relationships ◽  
The Usa ◽  
Sources Of Variation ◽  
Performance Results

Collaborative networks have become a common organizational strategy to deal with uncertain and dynamic environments. Like their counterparts in the USA, Korean hospitals are establishing cooperative relationships with one another, with varying performance results. This paper analyses some of the sources of variation in hospital network performance and identifies some of the possible success factors. The study finds that the quality of cooperation and information sharing between network partners are critical. The paper concludes with a discussion of the implications for researchers and practitioners.

Using Digital Portfolios to Enhance Students’ Capacity for Communication about Learning

2013 ◽  
pp. 37-53 ◽  
Author(s):  
Brian Kissel ◽  
S. Michael Putman ◽  
Katie Stover
Keyword(s):  
Information Sharing ◽  
Teaching Practices ◽  
Digital Technologies ◽  
Qualitative Approach ◽  
Student Writing ◽  
Global Information ◽  
Digital Environment ◽  
Digital Portfolios ◽  
International Reading Association ◽  
Writing Portfolios

There is a clear consensus that students need to be proficient in the use of digital technologies to help them become knowledgeable participants in an era of global information sharing (International Reading Association, 2009). Acknowledging this, the current study was situated in the belief that writers, when engaged in online composition and the creation of digital portfolios, engage in processes that differ from traditional pencil-paper types of writing. A qualitative approach was utilized to examine student writing samples and reflections over a two-year timeframe as the students transitioned from traditional writing portfolios to those created and maintained digitally on a wiki. The results demonstrated that digital portfolios provide a platform for students to communicate, express their ideas, share their understandings, and collaboratively construct meaning with an authentic audience. Correspondingly, it also demonstrates the necessity of adjusting teaching practices to accommodate for conditions that arise from the unique opportunities presented by the digital environment.

scholarly journals Sharing is not erring: Pseudo-reciprocity in collective search

2018 ◽  
Author(s):  
Imen Bouhlel ◽  
Charley M. Wu ◽  
Nobuyuki Hanaki ◽  
Robert L. Goldstone
Keyword(s):  
Information Sharing ◽  
Open Source ◽  
Open Source Software ◽  
Tragedy Of The Commons ◽  
Dynamic Environments ◽  
Competitive Environments ◽  
Shared Information ◽  
The Commons ◽  
Robust Evidence ◽  
Self Organizing

AbstractInformation sharing in competitive environments may seem counterintuitive, yet it is widely observed in humans and other animals. For instance, the open-source software movement has led to new and valuable technologies being released publicly to facilitate broader collaboration and further innovation. What drives this behavior and under which conditions can it be beneficial for an individual? Using simulations in both static and dynamic environments, we show that sharing information can lead to individual benefits through the mechanisms of pseudo-reciprocity, whereby shared information leads to by-product benefits for an individual without the need for explicit reciprocation. Crucially, imitation with a certain level of innovation is required to avoid a tragedy of the commons, while the mechanism of a local visibility radius allows for the coordination of self-organizing collectives of agents. When these two mechanisms are present, we find robust evidence for the benefits of sharing—even when others do not reciprocate.

MAMADAS

2011 ◽  
pp. 320-347
Author(s):  
Yu Jiao ◽  
Ali R. Hurson
Keyword(s):  
Information Sharing ◽  
Search Engine ◽  
Mobile Agent ◽  
Data Access ◽  
Past Research ◽  
Data Sources ◽  
Heterogeneous Databases ◽  
Security Architecture ◽  
Global Information ◽  
Agent Based

Creating a global information-sharing environment in the presence of autonomy and heterogeneity of data sources is a difficult task. When adding mobility and wireless media to this mix, the constraints on bandwidth, connectivity, and resources worsen the problem. Our past research in global information-sharing systems resulted in the design, implementation, and prototype of a search engine, the summary-schemas model, which supports imprecise global accesses to the data sources while preserving local autonomy. We extended the scope of our search engine by incorporating mobile agent technology to alleviate many problems associated with wireless communication. We designed and prototyped a mobile agent-based secure mobile data access system (MAMDAS) framework for information retrieval in large, distributed, and heterogeneous databases. In order to address the mounting concerns for information security, we also proposed a security architecture for MAMDAS. As shown by our experimental study, MAMDAS demonstrates good performance, scalability, portability, and robustness.

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