.png){kind=icon}
返回
Online Dependent Task Assignment in Preference Aware Spatial Crowdsourcing
.png){kind=icon}
PRE
AI
DOI：10.1109/TSC.2022.3217125.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Spatial crowdsourcing platforms have become increasingly popular in people's daily life. A fundamental problem in spatial crowdsourcing is task assignment, which assigns spatial tasks to the workers appropriately in order to satisfy certain objectives. Previous studies usually focus on the real-time micro-task allocation, which does not consider the dependency relationships among tasks. To address this limitation, in this article, we define and formulate a new problem, called Online Dependent Task Assignment (ODTA) in preference aware spatial crowdsourcing. We first prove that ODTA is NP-hard. Then, we design a threshold-based algorithm in the adversarial order model and obtain a near-optimal theoretical bound on the competitive ratio. More importantly, considering the random order arrival model, we further present three algorithms based on a two-stage framework, namely ODTA-Greedy, ODTA-Greedy-OP and ODTA-OPT, which are more effective with a constant competition ratio of 1/8, 1/8 and 1/4, respectively. Experimental results on both synthetic and real datasets show that our proposed ODTA-OPT approach outperforms the representative approaches in terms of overall utility.
Keyword:
Task assignment
online matching
preference aware spatial crowdsourcing
dependent task
期刊
IF:
5.8
论文数:
2.2K
被引数:
6.5K
机构
引用论文
分享收藏
Laparoscopic approach in emergency for the treatment of acute incarcerated groin hernia: a systematic review and meta-analysis.png)
Hernia
HerniaIF0
PREAI
分享收藏分享收藏
查看更多内容