We report on a large-scale empirical study to create application-level models for TCP traffic generation in simulations and network test-beds. A novel aspect of the study is the development of a method to construct empirical application-level models for arbitrary client/server (request/response) application-level protocols based on an analysis of unidirectional traces of only the TCP/IP headers...

This paper introduces a tailored procedure model to construct reference models by using rich empirical data. The procedure model has been built based on requirements from the public administration domain and has been applied in two case studies. Public administrations are currently confronted with the challenge of demands for an increased service level and an efficient handling of requests from...

This paper addresses a set of methodological problems arising in the empirical validation of agent-based (AB) economics models and discusses how these are currently being tackled. These problems are generic for all those engaged in AB modelling, not just economists. The discussion is therefore of direct relevance to JASSS readers. The paper has two objectives. The first objective is the identif...

earthquake ground-motions show significant variability in both spectral and temporal characteristics. procedures to generalize and predict strong ground motions may be generally divided into three main disciplines: numerical techniques based on a kinematic source description, empirical attenuation models, and semi-empirical stochastic models. numerous studies have shown that, in the near-fault ...

time series forecasting is an active research area that has drawn considerable attention for applications in a variety of areas. forecasting accuracy is one of the most important features of forecasting models. nowadays, despite the numerous time series forecasting models which have been proposed in several past decades, it is widely recognized that financial markets are extremely difficult to ...

In assessing the relative efficiency of decision-maker units by classical Data Envelopment Analysis (DEA) models, the status of the data is determined from the input or output points of views. In real issues, there are some data whose statuses are debatable. Some decision making units consider them as input to achieve higher efficiency while some other decision making units consider them ...