Pub Date : 2002-04-14DOI: 10.1109/DSN.2002.1028966
A. Horváth, M. Telek
PhFit, a new phase-type fitting tool is presented in this paper. PhFit allows for approximating distributions or set of samples not only by continuous but by discrete phase-type distributions as well. The implemented algorithms separate the fitting of the body and the tail part of the distribution which results in satisfactory fitting also for heavy-tail distributions. Moreover, PhFit allows the user to choose the distance measure according to which the fitting is performed. The tool is equipped with a graphical interface that visualizes the goodness of the provided approximation from several aspects.
{"title":"PhFit: a general phase-type fitting tool","authors":"A. Horváth, M. Telek","doi":"10.1109/DSN.2002.1028966","DOIUrl":"https://doi.org/10.1109/DSN.2002.1028966","url":null,"abstract":"PhFit, a new phase-type fitting tool is presented in this paper. PhFit allows for approximating distributions or set of samples not only by continuous but by discrete phase-type distributions as well. The implemented algorithms separate the fitting of the body and the tail part of the distribution which results in satisfactory fitting also for heavy-tail distributions. Moreover, PhFit allows the user to choose the distance measure according to which the fitting is performed. The tool is equipped with a graphical interface that visualizes the goodness of the provided approximation from several aspects.","PeriodicalId":93807,"journal":{"name":"Proceedings. International Conference on Dependable Systems and Networks","volume":"41 1","pages":"543-"},"PeriodicalIF":0.0,"publicationDate":"2002-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87261819","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}
Pub Date : 2002-01-01DOI: 10.1109/DSN.2002.1028898
R.J. Araujo Macedo, F.M. Assis Silva
We present the concept of mobile groups as a basic mechanism for both the reliable migration and the coordination of mobile processes. Analogously to traditional group systems, mobile groups also provide message delivery guarantees and virtual synchrony. Furthermore, they make process mobility not only visible for the group, but also consistently ordered with other group actions (such as crashes, joins, leaves, and other migrations). The mobile groups approach represents a novel mobility support mechanism which can be used to handle reliability of mobile distributed systems (such as the mobile agent systems), at the application and system level (e.g., for coordinating distributed agents and for reliable agent migration, respectively). We discuss the motivations for the mobile groups, formally define their basic properties, and present a membership protocol for such groups. We also discuss some implementation issues and present the advantages of mobile groups against mechanisms commonly employed for the coordination of mobile processes or agents.
{"title":"Coordination of mobile processes with mobile groups","authors":"R.J. Araujo Macedo, F.M. Assis Silva","doi":"10.1109/DSN.2002.1028898","DOIUrl":"https://doi.org/10.1109/DSN.2002.1028898","url":null,"abstract":"We present the concept of mobile groups as a basic mechanism for both the reliable migration and the coordination of mobile processes. Analogously to traditional group systems, mobile groups also provide message delivery guarantees and virtual synchrony. Furthermore, they make process mobility not only visible for the group, but also consistently ordered with other group actions (such as crashes, joins, leaves, and other migrations). The mobile groups approach represents a novel mobility support mechanism which can be used to handle reliability of mobile distributed systems (such as the mobile agent systems), at the application and system level (e.g., for coordinating distributed agents and for reliable agent migration, respectively). We discuss the motivations for the mobile groups, formally define their basic properties, and present a membership protocol for such groups. We also discuss some implementation issues and present the advantages of mobile groups against mechanisms commonly employed for the coordination of mobile processes or agents.","PeriodicalId":93807,"journal":{"name":"Proceedings. International Conference on Dependable Systems and Networks","volume":"64 Pt 2 1","pages":"177-186"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78632828","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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