User-centric Markov reward model for state-dependent Erlang loss systems
While users of Internet multimedia services demand high Quality of Experience (QoE), meeting these demands results in energy …
A Greener Experience: Trade-offs between QoE and CO2 Emissions in Today's and 6G Networks
While users of Internet multimedia services demand high Quality of Experience (QoE), meeting these demands results in energy …
How to Configure Masked Event Anomaly Detection on Software Logs?
Software Log anomaly event detection with masked event prediction has various technical approaches with countless configurations and …
What is the trade-off between CO2 emission and video-conferencing QoE?
It is a natural thing that users of multimedia services want to have the highest possible Quality of Experience (QoE), when using said …
User-Centric Markov Reward Model on the Example of Cloud Gaming
Markov reward models are commonly used in the analysis of systems by integrating a reward rate to each system state. Typically, rewards …
Pinpointing Anomaly Events in Logs from Stability Testing - N-Grams vs. Deep-Learning
As stability testing execution logs can be very long, software engineers need help in locating anomalous events to investigate when …
From QoS Distributions to QoE Distributions: A Systems Perspective
In the context of QoE management, network and service providers commonly rely on models that map system QoS conditions (e.g., system …
On System QoE: Merging the system and the QoE perspectives
With Quality of Experience (QoE) research having made significant advances over the years, increased attention is being put on …
The Interplay between QoE, User Behavior and System Blocking in QoE Management
In this position paper we highlight a shortcoming of current QoE management approaches that typically do not take into due account the …
Some Observations on Emerging Aspects in QoE Modeling and Their Impact on QoE Management
Quality of Experience (QoE) has received much attention over the past years and has become a prominent issue for delivering services …
A Survey of Emerging Concepts and Challenges for QoE Management of Multimedia Services
Quality of Experience (QoE) has received much attention over the past years and has become a prominent issue for delivering services …
What You Pay Is What You Get? — Fundamentals of Charging Internet Services Based on End User Quality of Experience
Complementing the current paradigm change from QoS to QoE, we address fundamental QoE charging issues for Internet services from an end …
QoE Analysis of the Setup of Different Internet Services for FIFO Server Systems
Queueing systems following a first-in-first-out (FIFO) strategy are well understood and various results are known for the response time …
A New QoE Fairness Index for QoE Management
The user-centric management of networks and services focuses on the Quality of Experience (QoE) as perceived by the end user. In …
No Silver Bullet: QoE Metrics, QoE Fairness, and User Diversity in the Context of QoE Management
Managing QoE is one of the most interesting direct applications of workable QoE models. Indeed, being able to predict how users …
Embracing Uncertainty: A Probabilistic View of HTTP Video Quality
When dealing with Quality of Experience (QoE) and in particular perceptual quality assessment and modeling, averaging is a common …
Definition of QoE Fairness in Shared Systems
User-centric service and application management focuses on the Quality of Experience (QoE) as perceived by the end user. Thereby, the …
QoE beyond the MOS: an in-depth look at QoE via better metrics and their relation to MOS
While Quality of Experience (QoE) has advanced very significantly as a field in recent years, the methods used for analyzing it have …
On Additive and Multiplicative QoS-QoE Models for Multiple QoS Parameters
Generic relationships between QoE and QoS have been intensively discussed in literature for single QoS parameters and often found to be …
Generating Realistic YouTube-like Stall Patterns for HTTP Video Streaming Assessment
In this short paper we briefly describe the results of analyzing a large-scale data set of actual YouTube stall patterns collected …
Network Quality Differentiation: Regional Effects, Market Entrance, and Empirical Testability
While for offline business models it is not seem necessary to reiterate the close relationship between quality and price, for Internet …
A Layered Model for Quality Estimation of HTTP Video from QoS Measurements
HTTP video is quickly becoming a dominating type of traffic on the Internet, with popular services such as YouTube and Netflix being …
On the Analysis of QoE in Cellular Networks: from Subjective Tests to Large-scale Traffic Measurements
Mobile devices such as smartphones are taking over traditional devices for Internet access in today’s scenario, and the near future …
Dagstuhl Manifesto: Quality of Experience: from Assessment to Application
Quality of Experience (QoE) has, over the past few years, gained much traction both in research and industrial circles, becoming a …
QoE-Driven Admission Control for Video Streams
The rapid growth of video traffic on the Internet raises many challenges for Internet service providers in managing their network …
From Service Level Agreements (SLA) to Experience Level Agreements (ELA): The Challenges of Selling QoE to the User
In contrast to the rather network-centric notion of Quality of Service (QoS), the concept of Quality of Experience (QoE) has a strongly …
QoE-Aware Routing for Video Streaming (short paper)
In this paper, we introduce a novel QoE-aware routing approach for video streams. Our approach monitors the network conditions in …
Quality of Experience: From Assessment to Application (Dagstuhl Seminar 15022)
This report provides an overview of the program, discussions and outcomes of Dagstuhl Seminar 15022 “Quality of Experience: From …
QoE in the Web: A Dance of Design and Performance
Web services and applications are an increasingly pervasive fixture of modern life and business. This paper reports on a Web-based …
QoE Beyond the MOS: Added Value Using Quantiles and Distributions
Traditionally, Quality of Experience (QoE) assessment results (or objective estimations thereof) are presented as a single scalar …
A Network Information Service for Quality-Driven Mobility
Fast growing data traffic over mobile networks pose many challenges for both end systems and networks to satisfy the required service …
ETSI TS 103 294 — Quality of Experience: A Monitoring Architecture
This ETSI TS describes an agent-based, modular, distributed architecture for QoE monitoring. It’s based on results from the …
Meta-Modeling QoE — Towards a Generic Methodology for Building QoE Models
In this paper we propose a methodological framework for modeling Quality of Experience (QoE) for media services in a generic manner. We …
QuoTe — An Extensible Platform for QoE Monitoring and Benchmarking of Telemedicine Applications
Telemedicine applications provide many opportunities for improving health care in a variety of conditions, in particular for people …
Quality-Driven Optimal SLA Selection for Enterprise Cloud Communications
With the availability of cloud computing infrastructures, migrating business-critical functionality to public clouds is becoming …
An Autonomous QoE-driven Network Management Framework
Recently, network researchers have taken a great interest in quality of experience (QoE) and in the new aspects it brings in the study …
Chamber QoE - A Multi-instrumental Apporach to Explore Affective Aspects in relation to Quality of Experience
Evaluating (audio)visual quality and Quality of Experience (QoE) from the user’s perspective, has become a key element in optimizing …
Increasing Payments in Crowdsourcing: Don’t Look a Gift Horse in the Mouth!
A commonly cited maxim states that “you get what you pay for”, implying that there is a strong correlation between the price paid for …
Quality of Service and Experience - Lost in the Cloud
The strong adoption rate for Cloud-based applications has so far been mostly based on the perceived economic advantages. Cloud-based …
Towards an Understanding of Visual Appeal in Website Design
Visual appeal (VA), as judged by users accessing different websites, has been shown to impact overall user preferences and …
A Reduced-Reference Parametric Model for Audiovisual Quality of IPTV Services
In this paper we present a parametric model for audiovisual quality estimation in IPTV and similar services. The proposed model takes …
Estimating the Effect of Context on QoE of Audiovisual Services: Laboratory vs. Public Places
Multimedia service providers and operators need tools that can estimate the quality of the services delivered to their end-customers. …
Ecosystem for Customer Experience Assurance
Nowadays service providers focus all their effort on customers’ satisfaction although determining the Quality of Experience (QoE) is …
QoE-Driven Network Management For Real-Time Over-the-top Multimedia Services
This paper introduces a network access point (AP) control solution in the context of over-the-top (OTT) multimedia services. The …
Video Quality as a Driver for Traffic Management with Multiple Subscriber Classes
Video services currently account for a very large portion of the total traffic on the Internet, and this portion is foreseen to keep …
A Global Customer Experience Management Architecture
The quality of experience (QoE) is one of the main research lines in ITC industry, which seeks to manage quality as perceived by users. …
Qualinet White Paper on Definitions of Quality of Experience
This White Paper is a contribution of the European Network on Quality of Experience in Multimedia Systems and Services, Qualinet (COST …
Analysis of Managed and Over-the-Top Streaming Services in Mobile Networks
Optimizing multimedia streaming in 3GPP mobile broadband networks (e.g. HSPA, LTE) in terms of user experience and network resource …
A Multi-Dimensional View of QoE: the ARCU Model
Understanding and modeling the wide range of influence factors that impact end user Quality of Experience (QoE) and go beyond …
Challenges of QoE Management for Cloud Applications
Cloud computing is currently gaining enormous momentum due to a number of promised benefits: ease of use in terms of deployment, …
Some Musings on QoE Definitions - Philosophy and Practice
Interest in Quality of Experience (QoE) has spiked over the last five years or so. Several large-scale research initiatives have been …
Gilbert-model Loss Trace Generator for Instrumentation of Subjective Assessment Campaigns
This program allows the generation of several accurate (with respect to pre-defined target values) loss traces following a simplified …
QoE-Driven Mobility Management - Integrating the Users' Quality Perception into Network-level Decision Making
One of the most interesting applications of single–sided Quality of Experience (QoE) metrics is their use in improving the quality of …
Terminal–side QoE Estimations for Cross–Layer Network Control
While the layered OSI model for networks provides a very clean conceptual framework for network design, certain applications are not …
Understanding Quality Issues In The Cloud
With the enormous momentum that Cloud Services adoption has had over the past few years, it seems likely that many services which are …
Single–sided Real–time PESQ Score Estimation
For several years now, the ITU-T’s Perceptual Evaluation of Speech Quality (PESQ) has been the reference for objective speech quality …
Some Experiences with VoIP Over Converging Networks
Over last few years an increasing number of multiaccess devices have emerged, which enable users to stay connected almost everywhere, …
Quality Assessment of Interactive Voice Applications
The conversational quality of a VoIP communication is dependent on several factors such as the coding process used, the network …
A New Way of Thinking Utility in Pricing Mechanisms: A Neural Network Approach
Pricing is regarded as a solution to congestion control in telecommunication net- works. Most mathematical models involve a so-called …
A Metric for Single-ended Speech Quality Estimation
Estimating the quality of VoIP-transmitted speech is the subject of this paper. We present a loss-based technique that allows a …
Evaluating Users’ Satisfaction in Packet Networks Using Random Neural Networks
Quantifying the quality of a video or audio transmission over the Internet is usually a hard task, as based on the statistical …
Controlling Multimedia QoS in the Future Home Network Using the PSQA Metric
Over the last few years, the growth of the Internet has spawned a whole new generation of networked applications, such as VoIP, …
A Systematic Study of PESQ’s Behavior (From a Networking Perspective)
In this paper we study, in a systematic way, how the behavior of PESQ estimations varies with the network loss process. We assess the …
Pseudo-subjective Quality Assessment of Multimedia Streams and its Applications in Control
The fast growth of the Internet over the last few years has spurred the development of new applications, in particular multimedia …
Wireless VoIP at Home: Are We There Yet?
Over the last few years, and especially since the advent of wireless technologies such as IEEE 802.11, home networks are becoming …
Studying the Effects of FEC on Voice Traffic Using PSQA (short paper)
In recent years, the growth of the Internet has spawned a whole new generation of networked real–time multimedia applications, such as …
Évaluation Pseudo-Subjective de la Qualité des Flux VoIP: une Approche par Réseaux de Neurones Aléatoires
Dans ce papier nous présentons une nouvelle approche que nous avons développée récemment pour l’évaluation pseudo–subjective de la …
Evaluating the Utility of Media–Dependent FEC in VoIP Flows
In this paper, we present an analysis of the impact of using media–dependent Forward Error Correction (FEC) in VoIP flows over the …
A New Approach for the Prediction of End-to-End Performance of Multimedia Streams
This paper proposes a new and accurate way of predicting the end-to-end performance of a multimedia stream. It consists of coupling an …
Subjective Audio Tests: Quality of a Selection of Codecs When Used in IP Networks
Subjective listening tests were performed in order to evaluate the impact of transmission over an IP network on the quality of two …
A method for quantitative evaluation of audio quality over packet networks and its comparison with existing techniques
We have recently proposed a novel, non–intrusive, real– time approach to measuring the quality of an audio (or speech) stream …
Performance Evaluation of Real-time Speech Through a Packet Network: a Random Neural Networks-based Approach
This paper addresses the problem of quantitatively evaluating the quality of a speech stream transported over the Internet as perceived …
Historias Clínicas en Tarjetas Inteligentes
Las tarjetas inteligentes han sido utilizadas desde los años ‘70, y sus aplicaciones han evolucionado gracias a avances …
A Simple Methodology for Secure Object Sharing
JavaCards allow more than one application (called Applets) to coexist in them. This makes them very attractive, as the user can have, …