{"title":"Enforcing quality of service of distributed objects","authors":"Alberto Avritzer, E. Weyuker","doi":"10.1109/ISSRE.1997.630887","DOIUrl":"https://doi.org/10.1109/ISSRE.1997.630887","url":null,"abstract":"Three algorithms designed to enforce different quality of service criteria are presented, as well as empirical assessments of the algorithms for three large industrial telecommunications systems. These assessments are made in terms of the simulated performance of each system on average loads selected from operational distributions collected during beta release and field use. In addition, synthetic heavy loads designed to cause the overall CPU utilization rates to exceed 90% of capacity were run. The algorithms build on previously defined load testing algorithms, and use parameters and operational distributions computed for that purpose. This makes the quality of service enforcement algorithms particularly efficient. The primary bases for the assessment of the algorithms were the overall deviation of the response time from the average, and the fraction of service requests that were throttled from clients under varying conditions.","PeriodicalId":170184,"journal":{"name":"Proceedings The Eighth International Symposium on Software Reliability Engineering","volume":"1415 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127441418","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}
{"title":"An example of risk assessment of software systems specifications","authors":"H. Ammar, T. Nikzadeh, J. Dugan","doi":"10.1109/ISSRE.1997.630861","DOIUrl":"https://doi.org/10.1109/ISSRE.1997.630861","url":null,"abstract":"This paper presents an example of risk assessment in complex real-time software systems at the early stages of development. A heuristic risk assessment technique based on colored Petri net (CPN) models is used to classify software according to its relative importance in terms of such factors as severity and complexity. The methodology of this technique is presented in a companion paper (Ammar et al., 1997). This technique is applied on the Earth Operation Commanding Center; a large component of NASA's Earth Observing System (EOS) project. Two specifications of the system are considered: a sequential model and a pipeline model. Results of applying the above technique to both CPN-based models yield different complexity measures. The pipeline model shows clearly a higher risk factor than the sequential model. Whereas using traditional complexity measures, the risk factors were similar in both models.","PeriodicalId":170184,"journal":{"name":"Proceedings The Eighth International Symposium on Software Reliability Engineering","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126318187","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}
T. Khoshgoftaar, K. Ganesan, E. B. Allen, Fletcher D. Ross, R. Munikoti, N. Goel, A. Nandi
{"title":"Predicting fault-prone modules with case-based reasoning","authors":"T. Khoshgoftaar, K. Ganesan, E. B. Allen, Fletcher D. Ross, R. Munikoti, N. Goel, A. Nandi","doi":"10.1109/ISSRE.1997.630845","DOIUrl":"https://doi.org/10.1109/ISSRE.1997.630845","url":null,"abstract":"Software quality classification models seek to predict quality factors such as whether a module will be fault prone, or not. Case based reasoning (CBR) is a modeling technique that seeks to answer new questions by identifying similar \"cases\" from the past. When applied to software reliability, the working hypothesis of our approach is this: a module currently under development is probably fault prone if a module with similar product and process attributes in an earlier release was fault prone. The contribution of the paper is application of case based reasoning to software quality modeling. To the best of our knowledge, this is the first time that case based reasoning has been used to identify fault prone modules. A case study illustrates our approach and provides evidence that case based reasoning can be the basis for useful software quality classification models that are competitive with discriminant models. The case study revisits data from a previously published nonparametric discriminant analysis study. The Type II misclassification rate of the CBR model was substantially better than that of the discriminant model. Although the Type I misclassification rate was slightly greater and the overall misclassification rate was only slightly less, the CBR model was preferred when costs of misclassification were considered.","PeriodicalId":170184,"journal":{"name":"Proceedings The Eighth International Symposium on Software Reliability Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129411498","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}
{"title":"Software Reliability Standards - Status And Progress","authors":"","doi":"10.1109/issre.1997.630866","DOIUrl":"https://doi.org/10.1109/issre.1997.630866","url":null,"abstract":"","PeriodicalId":170184,"journal":{"name":"Proceedings The Eighth International Symposium on Software Reliability Engineering","volume":"283 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114480761","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}