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Adi
Adi
8/12/2016 6:02:19 AM
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Author
What about fixed line?
@mohamed - your article references mobile video consumption statistics - is the vMOS solution aimed only at mobile, and not fixed line? It's a complex eco-system, because while mobile networks are the most susceptible to QoE degredation, we also have challenges for fixed line video delivery. And our research suggests a lot of video consumption on mobile devices is actually via Wifi. 

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DHagar
DHagar
8/11/2016 10:15:24 PM
User Rank
Platinum
Re: Quick methodological question
@JohnBarnes, it sounds as if your solid recommendation would better direct the "investments" of Huawei and their engineering team.  It also appears that if they build this "research capability", along with their solutions, they would further gain market recognition and validated consumer acceptance that they are delivering services that consumers perfer.

Sounds like this is a great suggestion for a true "value proposition" for Huawei and further excellence!

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JohnBarnes
JohnBarnes
8/11/2016 7:31:42 AM
User Rank
Platinum
Re: Quick methodological question
Aha. After looking through the white paper, the basis for both choosing the three factors, and for weighting them equally, was asking a largish sample of viewers what most bothered them and picking the three things that got the most votes. That's a pretty good way to do a very preliminary study, but for better work over the long run, there really needs to be a followup correlating pairwise comparisons by consumers with purposely varied technical aspects (like the 3 factors but probably not restricted to them), singly and in combinations.

As it is, the engineers were mostly able to secure an agreement that the engineers would work on things that engineers like to work on because they're easy to measure and don't directly involve asking cranky, difficult people.

As the white paper notes, getting real human measures of human satisfaction is difficult and expensive. Unfortunately, for this sort of research to be a genuinely good guide in prioritizing development, it's also highly necessary.

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VPMarket73494
VPMarket73494
8/11/2016 12:45:27 AM
User Rank
Steel
Re: Quick methodological question
Please take a look at this white paper. Let me know if it is still not clear

http://www-file.huawei.com/~/media/CORPORATE/PDF/white%20paper/Mobile%20Video%20Service%20Performance%20Study.pdf

 

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JohnBarnes
JohnBarnes
8/9/2016 7:36:42 AM
User Rank
Platinum
Quick methodological question
How were the weights set for the three quality factors in the final model? Assumed uniform, correlated to survey data, forced ranking from survey data? (I've seen all three in other attempts to develop objective performance scores). And were the four potential interaction terms included in at least the early drafts of the model?

Sorry to be a nag about this, but I have seen far too many cases where Ph.D/gold data is plugged into a 9th-grade/tin model.  The ability to monitor quality in a near-objective way on such a fine-grain scale is a great research tool from which everyone should be able to learn a lot -- but if the data passes through a model that isn't as good as the data, what comes out will be no better than the model, at best.

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