Techniques for Measuring Quality of Experience

Abstract

Abstract. Quality of Experience (QoE) relates to how users perceive the quality of an application. To capture such a subjective measure, either by subjective tests or via objective tools, is an art on its own. Given the importance of measuring users' satisfaction to service providers, research on QoE took flight in recent years. In this paper we present an overview of various techniques for measuring QoE, thereby mostly focusing on freely available tools and methodologies.

On Some Biases Encountered in Modern Audio Quality Listening Tests (Part 2): Selected Graphical Examples and Discussion

“…During the recent years it is possible to observe a shift of interest among some researchers from the traditional quality assessment to the evaluation of "quality of experience" (QoE); as the latter approach is claimed to be more ecologically valid [74] [75] [76] [77]. The aim of the former (traditional) approach is to assess the degree to which a system under appraisal meets expectations of human evaluators based on subjectively perceived audio stimuli, with deliberately reduced or controlled influence from non-auditory factors.…”

Emerging real-time services: optimizing traffic by smart cooperation in the network

“…For this aim, subjective quality estimators for different services [11], [12], [13] have been used in order to translate multiplexing delay into subjective quality score reduction. Research studies have obtained the maximum delay that the consumers may tolerate.…”

Robust QoE-aware prediction-based dynamic content adaptation framework applied to slides documents in mobile Web conferencing

“…Unlike the To dynamically identify the optimal transcoding parameter combinations that provide the end-user with the best user experience possible while satisfying the target mobile device's constraints, we presented a prediction-based dynamic content adaptation framework and applied it to JPEG and XHTML formats. First, we defined an objective quality of experience measure that takes into account the visual quality of the adapted content and the time it takes that content to reach the recipient (transport quality), and so addresses the three requirements needed in any quality of experience design [14].…”

“…Since the slides are to be rendered on D and their default resolution, as rendered on PC by OpenOffice, was 1058 × 794, the resolution to be used by SSIM can be determined, following the methodology of [3], by: min Note that, the SSIM index exhibits a highly non-linear relationship with the MOS (Mean Opinion Score), which represents a true measure of the human perception of image quality [29]. Therefore, to address the third element regarding the Q E design [14] (see section 4), the computed SSIM values were not used directly, but rather, were converted into their corresponding continuous MOS values.…”

“…The quality of the delivered content, as experienced by the end-user, Q E , is affected by three factors [14]: This is the fruit of research performed elsewhere, particularly in the marketing and decision making fields [15,6].…”