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The Next Talk Sp'17 Talks General Info Speaking Req't

FLOCK: Combating Astroturfing on Livestreaming Platforms

Friday, March 24th, 2017 from 12-1 pm in GHC 6501.

Neil Shah, CSD

ivestreaming platforms have become increasingly popular in recent years as a means of sharing and advertising creative content. Popular content streamers who attract large viewership to their live broadcasts can earn a living by means of ad revenue, donations and channel subscriptions. Unfortunately, this incentivized popularity has simultaneously resulted in incentive for fraudsters to provide services to astroturf, or artificially inflate viewership metrics by providing fake live views to customers. Our work provides a number of major contributions: (a) formulation: we are the first to introduce and characterize the viewbot fraud problem in livestreaming platforms, (b) methodology: we propose FLOCK, a principled and unsupervised method which efficiently and effectively identifies botted broadcasts and their constituent botted views, and (c) practicality: our approach achieves over 98% precision in identifying botted broadcasts and over 90% precision/recall against sizable synthetically generated viewbot attacks on a real-world livestreaming workload of over 16 million views and 92 thousand broadcasts. FLOCK successfully operates on larger datasets in practice and is regularly used at a large, undisclosed livestreaming corporation.

In Partial Fulfillment of the Speaking Requirement


Spring 2017 Schedule
Mon, Jan 16 GHC 6501 Expired
Fri, Jan 20 GHC 6501 Expired
Mon, Jan 23 GHC 7501 Expired
Fri, Jan 27 GHC 6501 Expired
Mon, Jan 30 GHC 6501 Expired
Fri, Feb 3 GHC 6501 Mu Li MXNet: Flexible Deep Learning Framework from Distributed GPU Clouds to Embedded Systems
Mon, Feb 6 GHC 6501 Expired
Fri, Feb 10 GHC 6501 Expired
Mon, Feb 13 GHC 6501 Expired
Fri, Feb 17 GHC 6501 Expired
Mon, Feb 20 GHC 6501 Expired
Fri, Feb 24 GHC 6501 Expired
Mon, Feb 27 GHC 6501 Expired
Fri, Mar 3 GHC 6501 Expired
Mon, Mar 6 GHC 6501 Expired
Fri, Mar 10 GHC 6501 Expired
Mon, Mar 13 GHC 6501 Expired
Fri, Mar 17 GHC 6501 Expired
Mon, Mar 20 GHC 6501 Expired
Fri, Mar 24 GHC 6501 Neil Shah FLOCK: Combating Astroturfing on Livestreaming Platforms
Mon, Mar 27 GHC 6501 Expired
Fri, Mar 31 GHC 6501 Expired
Mon, Apr 3 GHC 6501 Reserved UNAVAILABLE
Fri, Apr 7 GHC 6501 AVAILABLE
Mon, Apr 10 GHC 6501 AVAILABLE
Fri, Apr 14 GHC 6501 AVAILABLE
Mon, Apr 17 GHC 6501 AVAILABLE
Fri, Apr 21 GHC 6501 Reserved UNAVAILABLE
Mon, Apr 24 GHC 6501 AVAILABLE
Fri, Apr 28 GHC 6501 AVAILABLE
Mon, May 1 GHC 6501 AVAILABLE
Fri, May 5 GHC 6501 AVAILABLE
Mon, May 8 GHC 6501 AVAILABLE


General Info

The Student Seminar Series is an informal research seminar by and for SCS graduate students from noon to 1 pm on Tuesdays and Fridays. Lunch is provided by the Computer Science Department (personal thanks to Sharon Burks and Debbie Cavlovich!). At each meeting, a different student speaker will give an informal, 40-minute talk about his/her research, followed by questions/suggestions/brainstorming. We try to attract people with a diverse set of interests, and encourage speakers to present at a very general, accessible level.

So why are we doing this and why take part? In the best case scenario, this will lead to some interesting cross-disciplinary work among people in different fields and people may get some new ideas about their research. In the worst case scenario, a few people will practice their public speaking and the rest get together for a free lunch.


Guideline & Speaking Requirement Need-to-Know

Note: Step #1 below are applicable to all SSS speakers. You can schedule AT MOST THREE talks per semester.

SSS is an ideal forum for SCS students to give presentations that count toward fulfilling their speaking requirements. The specifics, though, vary with each department. For instance, students in CSD will need to be familiar with the notes in Section 8 of the Ph.D. document and follow the instructions outlined on the Speakers Club homepage. Roughly speaking, these are the steps:

  1. Schedule a talk with SSS by sending your talk title, abstract, additional info (like "Joint work with..." or "In Partial Fulfillment of the Speaking Requirement"), and a picture of yourself (preferably jpeg) to sss@cs at least TWO WEEKS before your scheduled talk.
  2. After you are confirmed with your SSS slot, go to the Speakers Club Calendar and schedule your talk at least THREE WEEKS in advance of the talk date.
  3. On the day of your talk, make sure you print Speakers Club evaluation forms for your evaluators to use.
Students outside of CSD will need to check with their respective departments regarding the procedure. As another example, ISRI students fulfill their speaking requirements by attending a semesterly Software Research Seminar and giving X number of presentations per school year. If you have experience with your department that might help others in your department, please feel free to contribute your knowledge by emailing us. Thank you!


SSS Coordinators

Armaghan Naik, Computational Biology
Lin Xiao, CSD
Qing Zheng, CSD

 


Web contact: sss+www@cs