136 citations · 153 across the 9 of their papers we have counts for
10 papers
Power Reduction Opportunities on End-User Devices in Quality-Steady Video Streaming
Christian Herglotz, Werner Robitza, Alexander Raake +2
This paper uses a crowdsourced dataset of online video streaming sessions to investigate opportunities to reduce the power consumption while considering QoE. For this, we base our…
Systematic Analysis of Experiment Precision Measures and Methods for Experiments Comparison
Jakub Nawała, Tobias Hoßfeld, Lucjan Janowski +1
The notion of experiment precision quantifies the variance of user ratings in a subjective experiment. Although there exist measures that assess subjective experiment precision, th…
From QoS Distributions to QoE Distributions: a System's Perspective
Tobias Hossfeld, Poul E. Heegaard, Martin Varela +2
In the context of QoE management, network and service providers commonly rely on models that map system QoS conditions (e.g., system response time, paket loss, etc.) to estimated e…
Crowdsourced Network Measurements in Germany: Mobile Internet Experience from End User Perspective
Anika Schwind, Florian Wamser, Tobias Hoßfeld +3
Collecting and analyzing meaningful data in mobile networks is the key to assessing network performance. Crowdsourced Network Measurements (CNMs) provide insights beyond the networ…
Impact of the Number of Votes on the Reliability and Validity of Subjective Speech Quality Assessment in the Crowdsourcing Approach
Babak Naderi, Tobias Hossfeld, Matthias Hirth +3
The subjective quality of transmitted speech is traditionally assessed in a controlled laboratory environment according to ITU-T Rec. P.800. In turn, with crowdsourcing, crowdworke…
Mobile Internet Experience: Urban vs. Rural -- Saturation vs. Starving?
Anika Schwind, Florian Wamser, Stefan Wunderer +2
Mobile Internet experience has been of increasing interest. Services accessed via smartphone applications shall provide satisfying Quality of Experience (QoE), irrespective of end…
Cumulative Quality Modeling for HTTP Adaptive Streaming
Huyen T. T. Tran, Nam Pham Ngoc, Tobias Hoßfeld +2
Thanks to the abundance of Web platforms and broadband connections, HTTP Adaptive Streaming has become the de facto choice for multimedia delivery nowadays. However, the visual qua…
Towards Machine Learning-Based Optimal HAS
Christian Sieber, Korbinian Hagn, Christian Moldovan +2
Mobile video consumption is increasing and sophisticated video quality adaptation strategies are required to deal with mobile throughput fluctuations. These adaptation strategies h…
Confidence Interval Estimators for MOS Values
Tobias Hossfeld, Poul E. Heegaard, Martin Varela +1
For the quantification of QoE, subjects often provide individual rating scores on certain rating scales which are then aggregated into Mean Opinion Scores (MOS). From the observed…
Formal Definition of QoE Metrics
Tobias Hossfeld, Poul E. Heegaard, Martin Varela +1
This technical report formally defines the QoE metrics which are introduced and discussed in the article "QoE Beyond the MOS: An In-Depth Look at QoE via Better Metrics and their R…