Title
Online Non-Preemptive Story Scheduling in Web Advertising.
Abstract
This paper is concerned with online story scheduling, motivated by storyboarding in online advertising. In storyboarding, triggered by the browsing history of a user, advertisers arrive online and wish to present a sequence of ads (stories) on the website. The user ceases to browse with probability 1-β at each time step. Once the user finishes watching an ad, the advertiser derives a reward. The goal of the website is to determine a schedule that maximizes the expected total reward. This problem was first introduced by Dasgupta et al.(SODAu002709) [7], and then improved by Alberts and Passen (ICALPu002713) [4]. In this paper, we abandon the preemptive assumption in [7] and [4], and consider a more realistic setting: online non-preemptive story scheduling, i.e., a running job (correspond to advertiseru0027 story) cannot be preempted even if another job leads to a higher reward.Specifically, we study the setting where only 1-lengthed and k-lengthed ads are allowed. We first present a greedy algorithm which achieves a competitive ratio of βk-1, and prove that this ratio is optimal for deterministic algorithms. Then, we propose a randomized algorithm with a competitive ratio of 1 over k+1 for general β, and then show that no randomized algorithm can achieve a competitive ratio better than (1+(1-βk-1)kover(1-βk)k-1)-1.
Year
DOI
Venue
2016
10.5555/2936924.2936965
AAMAS
Field
DocType
Citations 
Pluralistic walkthrough,Randomized algorithm,Nonpreemptive multitasking,Advertising,Scheduling (computing),Computer science,Online advertising,Greedy algorithm,Mechanism design,Artificial intelligence,Competitive analysis
Conference
0
PageRank 
References 
Authors
0.34
18
6
Name
Order
Citations
PageRank
Tie-yan Liu14662256.32
Weidong Ma2451.81
Tao Qin32384147.25
Pingzhong Tang413332.06
Guang Yang5173.33
Bo Zheng651.77