MODELING SUBJECTIVE TESTS OF QUALITY OF EXPERIENCE WITH A GENERALIZED LINEAR MODEL

被引:31
作者
Janowski, Lucjan [1 ]
Papir, Zdzislaw [1 ]
机构
[1] AGH Univ Sci & Technol, Dept Telecommun, Krakow, Poland
来源
QOMEX: 2009 INTERNATIONAL WORKSHOP ON QUALITY OF MULTIMEDIA EXPERIENCE | 2009年
关键词
Quality of Experience; Generalized Linear Model; Mean Opinion Score;
D O I
10.1109/QOMEX.2009.5246979
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Subjective tests of telecommunication services engaging a panel of subjects aim to analyze how service users experience their quality (QoE) with varying parameters of both a network and/or application itself. Subjects express their opinion on a few-grade categorical scale during tests performed in a controlled environment. The proposed Generalized Linear Model (GLZ)(1) relates probabilities of particular QoE levels to independent network and application explanatory variables in a statistically credible way. The GLZ model is executed in several steps including maximum likelihood estimation of model parameters, selection of the most effective model with the Bayesian information criterion. model validation with a chi-squared test, and last but not least confidence interval estimation Monitoring a QoE level with a GLZ model provides to operators an effective tool towards a mid- and long-term adaptation of both network and/or application parameters in order to follow users' experience and expectations.
引用
收藏
页码:35 / 40
页数:6
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