NDLI: Social piggybacking: leveraging common friends to generate event streams

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Social piggybacking: leveraging common friends to generate event streams

Content Provider	ACM Digital Library
Author	Junqueira, Flavio Gionis, Aristides Serafini, Marco Leroy, Vincent Weber, Ingmar
Abstract	Social networking systems present users with online event streams that include recent activities of their friends. Materialized per-user views are a common way to generate such event streams on-line and with low latency. We propose improving throughput by using social piggybacking: process the requests of two friends by just querying and updating the view of a third common friend. By using one such hub view, the system can serve requests of the first friend without querying nor updating the view of the second. This reduces the overall load on views, and can be implemented with minimal adaptations by existing social networking architectures. We show that, given a social graph, there exist hub-based schedules that minimize the overall number of view requests, but computing them is NP-hard. We propose a heuristic to solve the problem and evaluate it using samples from the Twitter and Flickr social graphs. The evaluation shows that existing solutions generate up to 2.4 times the amount of view requests induced by our heuristic.
Starting Page	1
Ending Page	6
Page Count	6
File Format	PDF
ISBN	9781450311649
DOI	10.1145/2181176.2181184
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2012-04-10
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Social piggybacking Social dissemination
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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