The lack of precision to predict service performance through load indices may lead to wrong decisions regarding the use of web services, compromising service performance and raising platform cost unnecessarily. This paper presents experimental studies to qualify the behaviour of load indices in the web service context. The experiments consider three services that generate controlled and signifi...

Supplier selection is a major strategy for manufacture to run the production process smoothly. Supplier categorization, selection and performance evaluation are decisions of strategic importance to companies. Global competition, mass customization, high customer expectations and harsh economic conditions are forcing companies to rely on external suppliers to contribute a larger portion of parts...

BACKGROUND Ulcerative colitis disease activity indices have not been formally validated. AIM To analise quantitatively the psychometric and performance validity of two non-endoscopic indices for ulcerative colitis, the Simple Clinical Colitis Activity Index and the Seo Index. METHODS In 66 patients with ulcerative colitis, the measurement of disease activity was repeated with the two non-en...

In this paper, we propose an objective, comprehensive and difficulty-independent performance evaluation protocol for video text detection algorithms. The protocol includes a positive set and a negative set of indices at textbox level, which evaluate the detection quality in terms of both location accuracy and fragmentation of the detected textboxes. In the protocol, we assign a detection diffic...

We present a solution to bind a highly specialized, fine tuned software tool for performance evaluation of complex systems (GreatSPN) with a general purpose interactive numerical environment (Scilab). We show how users can benefit from the respective powers of these tools. Our package allows computation of various performance indices not directly available in GreatSPN. RÉSUMÉ. Nous présentons u...

performance evaluation is one of the most important management agendas as key to achieving continuous improvement in the ability to evaluate the ongoing performance of the organization. many organizations have realized the importance of ongoing evaluation of performance and performance appraisal systems employ a variety of organizations. in this regard between 1850 and 1975, only on the basis o...