Real-time systems can be defined as systems operating under specific timing constraints, either hard or soft ones. In principle, agent systems are considered inappropriate for such kinds of systems, due to the asynchronous nature of their communication protocols, which directly influences their temporal behavior. Nevertheless, multi-agent systems could be successfully employed for solving problems where failure to meet a deadline does not have serious consequences, given the existence of a fail-safe system mechanism. Current work focuses on the analysis of multi-agent systems behavior under such soft real-time constraints. To this end, ERMIS has been developed: an integrated framework that provides the agent developer with the ability to benchmark his/her own architecture and identify its limitations and its optimal timing behavior, under specific hardware/software constraints. A variety of MAS configurations have been tested and indicative results are discussed within the context of this paper.
{"title":"Monitoring Agent Communication in Soft Real-Time Environments","authors":"A. Symeonidis, P. Mitkas","doi":"10.1109/WI-IAT.2010.198","DOIUrl":"https://doi.org/10.1109/WI-IAT.2010.198","url":null,"abstract":"Real-time systems can be defined as systems operating under specific timing constraints, either hard or soft ones. In principle, agent systems are considered inappropriate for such kinds of systems, due to the asynchronous nature of their communication protocols, which directly influences their temporal behavior. Nevertheless, multi-agent systems could be successfully employed for solving problems where failure to meet a deadline does not have serious consequences, given the existence of a fail-safe system mechanism. Current work focuses on the analysis of multi-agent systems behavior under such soft real-time constraints. To this end, ERMIS has been developed: an integrated framework that provides the agent developer with the ability to benchmark his/her own architecture and identify its limitations and its optimal timing behavior, under specific hardware/software constraints. A variety of MAS configurations have been tested and indicative results are discussed within the context of this paper.","PeriodicalId":340211,"journal":{"name":"2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125682032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
To make up for the insufficiency of the existing methods of decision model representation in supporting multilevel model users, a kind of hierarchical description framework of decision model is proposed. This framework is made up of basic layer, building block layer and conceptual layer that supporting three kinds of model users, which are the model constructors, the DSS constructors and the decision makers or the decision analyzers, respectively. In the end of the paper, an example is given to prove the scientificity and feasibility of the proposed description framework.
{"title":"A Hierarchical Description Framework of Decision Model for Multilevel Users","authors":"Xuelong Chen, Yanzhang Wang, Ning Wang","doi":"10.1109/WI-IAT.2010.108","DOIUrl":"https://doi.org/10.1109/WI-IAT.2010.108","url":null,"abstract":"To make up for the insufficiency of the existing methods of decision model representation in supporting multilevel model users, a kind of hierarchical description framework of decision model is proposed. This framework is made up of basic layer, building block layer and conceptual layer that supporting three kinds of model users, which are the model constructors, the DSS constructors and the decision makers or the decision analyzers, respectively. In the end of the paper, an example is given to prove the scientificity and feasibility of the proposed description framework.","PeriodicalId":340211,"journal":{"name":"2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125707216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In order to solve problems caused by various format of simulation data and complex operation flow on collaborative simulation from different software in the development of virtual prototype technology, this article analyzes and designs the SD&PMS(Simulation Data &Process Management System)frames based on three key capacity of simulation capacity management.They are Simulation organization structure and capacity of information management,simulation nodes plan management and simulation functional process management. The simulation data, relationships and flows were coordinated and optimized from technological and administrative point of view. Finally, the technological frame was verified through the implemental process of the work group level case. The result shows that the SD&PMS can coordinate work relationships and manage data from the simulation of work groups, enhance simulation efficiencies and development quality, which make the engineers break away from vast unimportant repetitive operations.
{"title":"Simulation Data and Process Management System in the Development of Virtual Prototype","authors":"Hang Yin, Yongming Gao, Hui Yan, Jiejuan Wang","doi":"10.1109/WI-IAT.2010.318","DOIUrl":"https://doi.org/10.1109/WI-IAT.2010.318","url":null,"abstract":"In order to solve problems caused by various format of simulation data and complex operation flow on collaborative simulation from different software in the development of virtual prototype technology, this article analyzes and designs the SD&PMS(Simulation Data &Process Management System)frames based on three key capacity of simulation capacity management.They are Simulation organization structure and capacity of information management,simulation nodes plan management and simulation functional process management. The simulation data, relationships and flows were coordinated and optimized from technological and administrative point of view. Finally, the technological frame was verified through the implemental process of the work group level case. The result shows that the SD&PMS can coordinate work relationships and manage data from the simulation of work groups, enhance simulation efficiencies and development quality, which make the engineers break away from vast unimportant repetitive operations.","PeriodicalId":340211,"journal":{"name":"2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122131505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Group modeling is still an open challenge problem in pedestrian crowd simulations. Most existing work is based on socio-psychological models which can only describe the dynamics of pedestrians’ socio-psychological states. The ability of dynamic grouping also requires that pedestrians are intelligent to behave adaptively in the ever changing environment. However, little work has incorporated the effect of artificial intelligence in the study of group behaviors. This paper describes a novel model to simulate dynamic groups based on both utility theory and social comparison theory. To our knowledge, the model is one of few models using utility theory and social comparison theory to model group behaviors. Experiment results suggest that groups can be dynamically formed and grouping has significant effect on crowd behaviors. Besides, the model can also be used to simulate various structures in dynamic groups.
{"title":"Modeling Dynamic Groups for Agent-Based Pedestrian Crowd Simulations","authors":"Fasheng Qiu, Xiaolin Hu","doi":"10.1109/WI-IAT.2010.9","DOIUrl":"https://doi.org/10.1109/WI-IAT.2010.9","url":null,"abstract":"Group modeling is still an open challenge problem in pedestrian crowd simulations. Most existing work is based on socio-psychological models which can only describe the dynamics of pedestrians’ socio-psychological states. The ability of dynamic grouping also requires that pedestrians are intelligent to behave adaptively in the ever changing environment. However, little work has incorporated the effect of artificial intelligence in the study of group behaviors. This paper describes a novel model to simulate dynamic groups based on both utility theory and social comparison theory. To our knowledge, the model is one of few models using utility theory and social comparison theory to model group behaviors. Experiment results suggest that groups can be dynamically formed and grouping has significant effect on crowd behaviors. Besides, the model can also be used to simulate various structures in dynamic groups.","PeriodicalId":340211,"journal":{"name":"2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127386823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The indexing vocabulary is an important determinant of success in text retrieval. Researchers have compared the effectiveness of indexing strategies using free-text and controlled vocabularies in a variety of text contexts. This paper introduces a new approach in creating indices for medical literature using the Semantic Graph (SG) derived from both UMLS Metathesaurus and WordNet. Our performance studies indicate that using the Semantic Graph based strategy results in an increase in 11pt-average precision over traditional free-text and MeSH indexed strategies.
{"title":"Semantic Graph Based Document-Indexing Strategy for MEDLINE","authors":"William P. Taylor, J. Wang","doi":"10.1109/WI-IAT.2010.65","DOIUrl":"https://doi.org/10.1109/WI-IAT.2010.65","url":null,"abstract":"The indexing vocabulary is an important determinant of success in text retrieval. Researchers have compared the effectiveness of indexing strategies using free-text and controlled vocabularies in a variety of text contexts. This paper introduces a new approach in creating indices for medical literature using the Semantic Graph (SG) derived from both UMLS Metathesaurus and WordNet. Our performance studies indicate that using the Semantic Graph based strategy results in an increase in 11pt-average precision over traditional free-text and MeSH indexed strategies.","PeriodicalId":340211,"journal":{"name":"2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127081747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The assessment of data quality is a key success factor for organisational performance. It supports managers and executives to clearly identify and present incomplete or inconsistent values in their information systems and as a result, minimises and eliminates the risk associated with decisions based on poor data. Despite the important of data quality assessment, limited research has been carried out on assessing the completeness and consistency of the data. Researchers and practitioners usually apply error ratio metric to calculate the defective or integrative data. However, this approach is not sufficient in term of providing a complete quality assessment since error ratio can be randomly distributed across databases. This study will introduce a decision rule method for providing a comprehensive quality assessment. The proposed decision rule method will eliminate the issue of error ratio and lead to the accurate assessment of the quality in organisational information systems.
{"title":"A Decision Rule Method for Assessing the Completeness and Consistency of a Data Warehouse","authors":"Nawaf Alkharboush, Yuefeng Li","doi":"10.1109/WI-IAT.2010.245","DOIUrl":"https://doi.org/10.1109/WI-IAT.2010.245","url":null,"abstract":"The assessment of data quality is a key success factor for organisational performance. It supports managers and executives to clearly identify and present incomplete or inconsistent values in their information systems and as a result, minimises and eliminates the risk associated with decisions based on poor data. Despite the important of data quality assessment, limited research has been carried out on assessing the completeness and consistency of the data. Researchers and practitioners usually apply error ratio metric to calculate the defective or integrative data. However, this approach is not sufficient in term of providing a complete quality assessment since error ratio can be randomly distributed across databases. This study will introduce a decision rule method for providing a comprehensive quality assessment. The proposed decision rule method will eliminate the issue of error ratio and lead to the accurate assessment of the quality in organisational information systems.","PeriodicalId":340211,"journal":{"name":"2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology","volume":" 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113951145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, we discuss the problem of route planning and scheduling by a group of agents. Each agent is responsible for designing a route plan and schedule over a geographical network, and the goal is to obtain a conflict-free plan/schedule that optimizes a global objective. We present a hybrid conflict resolution method that involves coalition formation and distributed constraint satisfaction depending on the level of coupling between agents. We show how this approach can be effectively applied to solve a distributed convoy movement planning problem.
{"title":"Distributed Route Planning and Scheduling via Hybrid Conflict Resolution","authors":"R. Thangarajoo, H. Lau","doi":"10.1109/WI-IAT.2010.257","DOIUrl":"https://doi.org/10.1109/WI-IAT.2010.257","url":null,"abstract":"In this paper, we discuss the problem of route planning and scheduling by a group of agents. Each agent is responsible for designing a route plan and schedule over a geographical network, and the goal is to obtain a conflict-free plan/schedule that optimizes a global objective. We present a hybrid conflict resolution method that involves coalition formation and distributed constraint satisfaction depending on the level of coupling between agents. We show how this approach can be effectively applied to solve a distributed convoy movement planning problem.","PeriodicalId":340211,"journal":{"name":"2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129496870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The paper proposes a biologically-inspired cognitive agent model, known as FALCON-X, based on an integration of the Adaptive Control of Thought (ACT-R) architecture and a class of self-organizing neural networks called fusion Adaptive Resonance Theory (fusion ART). By replacing the production system of ACT-R by a fusion ART model, FALCON-X integrates high-level deliberative cognitive behaviors and real-time learning abilities, based on biologically plausible neural pathways. We illustrate how FALCON-X, consisting of a core inference area interacting with the associated intentional, declarative, perceptual, motor and critic memory modules, can be used to build virtual robots for battles in a simulated RoboCode domain. The performance of FALCON-X demonstrates the efficacy of the hybrid approach.
{"title":"A Biologically-Inspired Cognitive Agent Model Integrating Declarative Knowledge and Reinforcement Learning","authors":"A. Tan, G. Ng","doi":"10.1109/WI-IAT.2010.210","DOIUrl":"https://doi.org/10.1109/WI-IAT.2010.210","url":null,"abstract":"The paper proposes a biologically-inspired cognitive agent model, known as FALCON-X, based on an integration of the Adaptive Control of Thought (ACT-R) architecture and a class of self-organizing neural networks called fusion Adaptive Resonance Theory (fusion ART). By replacing the production system of ACT-R by a fusion ART model, FALCON-X integrates high-level deliberative cognitive behaviors and real-time learning abilities, based on biologically plausible neural pathways. We illustrate how FALCON-X, consisting of a core inference area interacting with the associated intentional, declarative, perceptual, motor and critic memory modules, can be used to build virtual robots for battles in a simulated RoboCode domain. The performance of FALCON-X demonstrates the efficacy of the hybrid approach.","PeriodicalId":340211,"journal":{"name":"2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129151166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The abundance of content on the web and the lack of quality control require more refined approaches in analyzing online information. In this paper, we propose evaluating the extent to which web search results cover important and recent news related to real-world objects. Our method allows for identifying search results that provide comprehensive overviews of major events related to user queries or that contain most recent information.
{"title":"Estimating News Coverage of Web Search Results","authors":"A. Jatowt, Yukiko Kawai, Katsumi Tanaka","doi":"10.1109/WI-IAT.2010.252","DOIUrl":"https://doi.org/10.1109/WI-IAT.2010.252","url":null,"abstract":"The abundance of content on the web and the lack of quality control require more refined approaches in analyzing online information. In this paper, we propose evaluating the extent to which web search results cover important and recent news related to real-world objects. Our method allows for identifying search results that provide comprehensive overviews of major events related to user queries or that contain most recent information.","PeriodicalId":340211,"journal":{"name":"2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology","volume":"226 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129172790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
WITH the maturity of Web Services and Enterprise Service Oriented Architectures (SOA), new delivery and Web interaction models are now demonstrating how services can be traded outside traditional ownership and provisioning boundaries. The value of SOA comes from having an architecture that readily accommodates change. The more your business changes, the more SOA pays for itself. However, the initial build-out of SOA, prior to business change or service sharing, is cost-ineffective. By incorporating cloud computing in SOA, the time to value is shortened because you leverage ‘other people’s work’ as well as saving on infrastructure cost by leveraging on demand cloud based infrastructure services. This article outlines a distributed Web interactive system for sharing health records on the cloud using distributed OSGi services and consumers, called HCX (Health Cloud eXchange). This system allows for different health record and related healthcare services to be dynamically discovered and interactively used by client programs running within a federated private cloud. A basic prototype is presented as proof of concept along with a description to the steps and processes involved in setting up the underlying infrastructure. Finally some future directions for using this infrastructure are illustrated.
{"title":"HCX: A Distributed OSGi Based Web Interaction System for Sharing Health Records in the Cloud","authors":"Sabah Mohammed, Daniel Servos, J. Fiaidhi","doi":"10.1109/WI-IAT.2010.26","DOIUrl":"https://doi.org/10.1109/WI-IAT.2010.26","url":null,"abstract":"WITH the maturity of Web Services and Enterprise Service Oriented Architectures (SOA), new delivery and Web interaction models are now demonstrating how services can be traded outside traditional ownership and provisioning boundaries. The value of SOA comes from having an architecture that readily accommodates change. The more your business changes, the more SOA pays for itself. However, the initial build-out of SOA, prior to business change or service sharing, is cost-ineffective. By incorporating cloud computing in SOA, the time to value is shortened because you leverage ‘other people’s work’ as well as saving on infrastructure cost by leveraging on demand cloud based infrastructure services. This article outlines a distributed Web interactive system for sharing health records on the cloud using distributed OSGi services and consumers, called HCX (Health Cloud eXchange). This system allows for different health record and related healthcare services to be dynamically discovered and interactively used by client programs running within a federated private cloud. A basic prototype is presented as proof of concept along with a description to the steps and processes involved in setting up the underlying infrastructure. Finally some future directions for using this infrastructure are illustrated.","PeriodicalId":340211,"journal":{"name":"2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131243269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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