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Erschienen in:
Motivation and Introduction Kapitel lesen Erstes Kapitel lesen

2014 | OriginalPaper | Buchkapitel

11. Quality of Experience and Interactivity

verfasst von : Sebastian Egger, Peter Reichl, Katrin Schoenenberg

Erschienen in: Quality of Experience

Verlag: Springer International Publishing

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Abstract

This chapter discusses the relation between interactivity and QoE. In this context, a definition of interactivity comprising human-to-human interaction as well as human-to-machine interaction is presented, and a description of a possible instrumentation is given. In terms of quality formation, a mediation layer between quality influence factors and perceived quality features is introduced that allows the inclusion of interactivity-related perception in the quality formation process. A discussion of commonalities and differences between interaction with a system and interaction with one or several other persons via a system identifies the open challenges for reliable and successful measurement of interactivity related aspects and the identification of relationships between these interaction measures and QoE.

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Vorheriges Kapitel Temporal Development of Quality of Experience
Nächstes Kapitel Speech Communication
Fußnoten
1
Also other distortions in the communication channel such as e.g. echo or noise to impact the interaction behaviour of interactants. However, throughout this chapter we focus on transmission delay as most influential impairment for human mediated communication.
 
2
Due to space limitations we can only discuss interactivity for certain interactive services within this chapter, and hereby want to point out that our definitions of interactivity as well as the contribution of interactivity to the overall quality formation process are also valid for other interactive services such as sensory experiences and interactive gaming, as described in Chaps. 24 and 25, respectively.
 
3
Human interaction scholars might argue that restricting interaction to request-response patterns is no longer an analysis of true interaction but rather quasi interaction (cf. [5‐7]). However, as we target a broad range of services in addition to H2H interaction we are confident that this restriction is adequate for identifying the influence of interactivity on QoE for all of these services.
 
4
This model is based on observations of H2H-communication interactions reported in [8‐10] where users were interrupting the other person frequently, and observations of H2M interaction, where similarly users, while web-browsing [11, 12], were navigating further on a web page through clicking on a respective link before the web page was fully loaded. This lower bound of sufficient information (for issuing a subsequent request) might be defined in two ways: (1) with a relative or absolute amount of information (e.g. 70 % of rendered screen area, or fully rendered screen) (2) based on the considerations from [2] where the bound is reached after the entropy of user (A) gets smaller then the entropy of the response of user (B) in order to maximize the amount on information exchanged.
 
5
Thereby running several times through the respective perception and judgement processes.
 
6
Note that the quality influence factors in the quality formation process described in Chap. 2 are considered in the lower left box that feeds in the sensory processing cirle in Fig. 2.​3.
 
7
including all system parts such as e.g. the transmission path, the interface, amount of information stored etc.
 
Literatur
1.
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2.
Reichl P (2007) How to define conversational interactivity: a game-theoretic approach and its application in telecommunications. J Inf Technol Control (JITC) 3(No. 3–4/2006):18–24
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Kitawaki N, Itoh K (1991) Pure delay effects on speech quality in telecommunications. IEEE J Sel Areas Commun 9(4):586–593CrossRef
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McMillan S (2005) Exploring models of interactivity from multiple research traditions: users, documents and systems. Handbook of new media 2:205–229
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Egger S, Schatz R, Scherer S (2010) It takes two to tango—assessing the impact of delay on conversational interactivity on perceived speech quality. In: Interspeech, pp 1321–1324
9.
Egger S, Schatz R, Schoenenberg K, Raake A, Kubin G (2012) Same but different?—Using speech signal features for comparing conversational VoIP quality studies. In: IEEE ICC 2012—communication QoS, reliability and modeling symposium (ICC’12 CQRM). Ottawa, Ontario, Canada
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Schoenenberg K, Raake A, Egger S, Schatz R (2012) On interaction behaviour in telephone conversations under transmission delay. Speech Communication. Submitted June 2012
11.
Egger S, Reichl P, Hoßfeld T, Schatz R (2012) ‘Time is Bandwidth’? Narrowing the gap between subjective time perception and quality of experience. In: IEEE ICC 2012-communication QoS, reliability and modeling symposium (ICC’12 CQRM). Ottawa, Ontario, Canada
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Egger S, Schatz R, Hoßfeld T, Müllner W (2013) ITU-T SG 12 contribution C-033: perceptual events in a page view cycle outcome from the interim meeting in Berlin 11/2012. Tech. rep, FTW, Geneva, Switzerland
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Fiedler M (2004) Deliverable D.WP.JRA.6.1.1: state of the art with regards to user perceived quality of service and quality feedback. Tech. rep., EuroNGI (2004). http://​eurongi.​enst.​fr
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Egger S, Hoßfeld T, Schatz R, Fiedler M (2012) Tutorial: waiting times in quality of experience for web based services. In: IEEE QoMEX 2012, Yara Valley, Australia
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Brady PT (1968) A statistical analysis of on-off patterns in 16 conversations. Bell Syst Tech J 47(1):73–91CrossRef
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Metadaten
Titel
Quality of Experience and Interactivity
verfasst von
Sebastian Egger
Peter Reichl
Katrin Schoenenberg
Copyright-Jahr
2014
Buch
Quality of Experience

Print ISBN: 978-3-319-02680-0

Electronic ISBN: 978-3-319-02681-7

Copyright-Jahr: 2014

DOI
https://doi.org/10.1007/978-3-319-02681-7_11

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