Marwan Fayed (St Andrews): Quality of Experience Fairness for Adaptive Video Streams in the Network (School Seminar)

Event details

  • When: 13th March 2018 14:00 - 15:00
  • Where: Cole 1.33a
  • Series: School Seminar Series
  • Format: Seminar

Abstract:

“Why is my kid getting HD on their phone, while I’m stuck with SD on my 50″ TV?” This type of complaint is among the most common directed to streaming services such as Netflix and BBC. Recent studies observe that adaptive video streams, when competing behind a bottleneck link, generate flows that lead to instability, under-utilization, and unfairness. Additional measurements suggest there may also be a negative impact on users’ perceived quality of experience as a consequence. The intuitive response may be, and has been, that application-generated issues should be resolved by the application. In this presentation I shall demonstrate that fairness, by any definition, can only be solved in the network. Moreover, that in an increasingly HTTP-S world, some form of client interaction is required. In support, a new network-layer ‘QoE-fairness’ metric will be be introduced that reflects user experience. Experiments using our open-source implementation in the home environment reinforce the network-layer as the right place to attack the general problem.

Refs-

[1] http://dl.ifip.org/db/conf/networking/networking2015/1570066341.pdf
[2] https://dl.acm.org/citation.cfm?id=2940144

Speaker Bio:
Marwan Fayed joined the University of St Andrews in 2018. He received his MA from Boston University and his PhD from the University of Ottawa, in 2003 and 2009 respectively, and in between worked at Microsoft as a member of the Core Reliability Group. In 2009 he joined the University of Stirling, UK as Scottish Informatics and Computer Science Alliance (SICSA) Lecturer, alongside an appointment to ‘Theme Leader’ for networking research in Scotland, 2014-2016. His current research interests lie in wireless algorithms, as well as general network, transport, and measurement in next generation edge networks. He is a co-founder of HUBS C.i.C., an ISP focussed on rural communities, recipient of an IEEE best paper award, and a Senior Member of both the IEEE and ACM.

Computer Science student launches UK-wide app: Shrowze.


“The Human Personal Assistant you summon by text”

Computer Science student Nnamdi Ekwe-Ekwe launches a UK-wide app today, that frees up your time to do what you want to do rather than what you have to do. Shrowze is an app that provides everyone with their own human personal assistant to help them with whatever they need to do. It is the Human Personal Assistant you summon by text.

Nnamdi a PhD student in the School, built Shrowze in response to how long he saw it took people (himself included) to complete tasks that should be simple and straightforward (such as finding accommodation, booking a flight, organising and booking a meal, getting a plumber, etc.)

Nnamdi notes,

“As a full-time student I’ve always wanted to have more time for myself and concentrate on the truly important things, while not neglecting the numerous commitments I have every day – a problem shared by millions the world over. I just remember spending lots of time on routine everyday things that needed doing, when instead I could have been spending my time more usefully.”

With Shrowze, whatever it is you need doing, whatever it is you need getting, from wherever in the world, their team of human personal assistants can help – all you have to do is send a text. Shrowze has been trialed over the past 6 months with the general public and with students, receiving great feedback.

“Hi, I’m looking for accommodation for next year. This is my budget, and it’s going to be 4 of us sharing. Can you give us some potential places and book us viewings?”

“Hi, can you find me cheap flights to Barcelona for next week? And accommodation, and also give me a list of things to do there?”

“Hi, can you book me the best but cheapest taxi to the station? Three of us are going, we have two pieces of luggage!”


Shrowze is now live for all users across the country. For the next two weeks, anybody who signs up with Shrowze, will get 1 hour free time to have access to their own human personal assistant. Additionally, all students get a special 50% discount for as long as they are a student to use Shrowze.


Website – https://www.shrowze.co.uk/

Nnamdi Ekwe-Ekwe completed his undergraduate degree at the University of Leicester before studying for his Masters in Advanced Computer Science at the University of St Andrews and is currently a PhD student with a focus on Cloud Computing.

Text and images courtesy of Darcy Roberts, Communications Team, Shrowze and Nnamdi.

PhD viva success: Alexander Murashko

Congratulations to Alexander Murashko, who successfully defended his thesis last week. Alexander is pictured with External Examiner, Professor Paul McKevitt from Ulster University, Internal Examiner Dr Kasim Terzic, Convener Professor Alan Dearle and Supervisor Dr John Thomson.

Image courtesy of Annemarie Paton.