Reshaping Mobile Crowd Sensing using Cross Validation to Improve Data Credibility


Data credibility is a crucial issue in mobile crowd sensing (MCS) and, more generally, people-centric Internet of Things (IoT). Prior work takes approaches such as incentive mechanism design and data mining to address this issue, while overlooking the power of crowds itself, which we exploit in this paper. In particular, we propose a cross validation approach which seeks a validating crowd to verify the data credibility of the original sensing crowd, and uses the verification result to reshape the original sensing dataset into a more credible posterior belief of the ground truth. Following this approach, we design a specific cross validation mechanism, which integrates four sampling techniques with a privacy-aware competency-adaptive push (PACAP) algorithm and is applicable to time-sensitive and quality-critical MCS applications. It does not require redesigning a new MCS system but rather functions as a lightweight "plug-in", making it easier for practical adoption. Our results demonstrate that the proposed mechanism substantially improves data credibility in terms of both reinforcing obscure truths and scavenging hidden truths.

Meeting Name

2017 IEEE Global Communications Conference, GLOBECOM 2017 (2017: Dec. 4-8, Singapore)


Computer Science

Keywords and Phrases

Internet of things, Cross validation; Crowd sensing; Data credibilities; Incentive mechanism; Internet of Things (IOT); Privacy aware; Sampling technique; Verification results, Data mining

International Standard Book Number (ISBN)


Document Type

Article - Conference proceedings

Document Version


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© 2017 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Dec 2017