CDAS: A Crowdsourcing Data Analytics System

Summary: CDAS is a crowdsourcing analytics framework that integrates human and machine tasks through a quality-sensitive query model. It estimates worker-driven result accuracy, adaptively verifies answers online, and reduces cost while meeting accuracy targets in Twitter sentiment and image-tagging workloads. (summarized by gpt-5.6-luna on Jul 24 2026)

Paper ID: 10531
Venue: VLDB
Year: 2012
Pagerank: 0.00011388453
Overall Rank: 1,270 | 91.29%
DOI: 10.14778/2336664.2336672

Incoming Non-self Citations Over Time

Authors

1. Xuan Liu (National University of Singapore)
2. Meiyu Lu (National University of Singapore)
3. Beng Chin Ooi (National University of Singapore)
4. Yanyan Shen (National University of Singapore)
5. Sai Wu (Zhejiang University)
6. Meihui Zhang (National University of Singapore)

BibTeX Citation

@article{liu_vldb12,
        title = {{CDAS: A Crowdsourcing Data Analytics System}},
        author = {Liu, Xuan and Lu, Meiyu and Ooi, Beng Chin and Shen, Yanyan and Wu, Sai and Zhang, Meihui},
        journal = {PVLDB},
        series = {{VLDB} '12},
        volume = {5},
        number = {10},
        pages = {1040--1051},
        doi = {10.14778/2336664.2336672},
        url = {https://doi.org/10.14778/2336664.2336672},
        year = {2012}
}

Incoming Citations (Sorted by Pagerank)

Showing 25 of 25 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
439	Corleone: Hands-Off Crowdsourcing for Entity Matching	2014	SIGMOD	0.00018464913
852	Leveraging Transitive Relations for Crowdsourced Joins	2013	SIGMOD	0.00013604253
3,231	Truth Inference in Crowdsourcing: Is the Problem Solved?	2017	VLDB	7.6191767e-05
3,262	iCrowd: An Adaptive Crowdsourcing Framework	2015	SIGMOD	7.5846052e-05
3,281	Cleaning Crowdsourced Labels Using Oracles for Statistical Classification	2019	VLDB	7.5706653e-05
3,314	Finish Them!: Pricing Algorithms for Human Computation	2014	VLDB	7.5279588e-05
3,904	QASCA: A Quality-Aware Task Assignment System for Crowdsourcing Applications	2015	SIGMOD	7.0304212e-05
3,983	Crowd-Based Deduplication: An Adaptive Approach	2015	SIGMOD	6.9739851e-05
4,538	Cost-Effective Crowdsourced Entity Resolution: A Partial-Order Approach	2016	SIGMOD	6.6404776e-05
5,143	An Online Cost Sensitive Decision-Making Method in Crowdsourcing Systems	2013	SIGMOD	6.3476753e-05
6,115	Fine-grained Concept Linking using Neural Networks in Healthcare	2018	SIGMOD	5.9709282e-05
6,908	Cost-Effective Data Annotation using Game-Based Crowdsourcing	2019	VLDB	5.7415834e-05
7,018	Answering Planning Queries with the Crowd	2013	VLDB	5.7251004e-05
7,081	OASSIS: Query Driven Crowd Mining	2014	SIGMOD	5.7086247e-05
7,313	Interactive Graph Search	2019	SIGMOD	5.6480084e-05
7,357	Crowdsourced Data Management: Overview and Challenges	2017	SIGMOD	5.6346837e-05
8,351	Minimizing Efforts in Validating Crowd Answers	2015	SIGMOD	5.4454221e-05
8,352	PACE: Learning Effective Task Decomposition for Human-in-the-loop Healthcare Delivery	2021	SIGMOD	5.4453394e-05
8,807	Understanding Workers, Developing Effective Tasks, and Enhancing Marketplace Dynamics: A Study of a Large Crowdsourcing Marketplace	2017	VLDB	5.3671183e-05
9,401	CDB: Optimizing Queries with Crowd-Based Selections and Joins	2017	SIGMOD	5.2755515e-05
9,812	Interactive Graph Search for Multiple Targets on DAGs	2025	VLDB	5.214913e-05
10,031	tDP: An Optimal-Latency Budget Allocation Strategy for Crowdsourced MAXIMUM Operations	2015	SIGMOD	5.1741314e-05
11,936	A Demonstration of PERC: Probabilistic Entity Resolution With Crowd Errors	2018	VLDB	5.093636e-05
11,995	CrowdDQS: Dynamic Question Selection in Crowdsourcing Systems	2017	SIGMOD	5.093636e-05
12,019	DOCS: Domain-Aware Crowdsourcing System	2017	VLDB	5.093636e-05

Outgoing Citations (Sorted by Pagerank)

Showing 7 of 7 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

Rank	Cited Paper	Year	Venue	Pagerank
90	CrowdDB: Answering Queries with Crowdsourcing	2011	SIGMOD	0.00034951786
250	Answering Queries using Humans, Algorithms and Databases	2011	CIDR	0.00023261164
251	Crowdsourced Databases: Query Processing with People	2011	CIDR	0.00023261113
767	Human-Assisted Graph Search: It’s Okay to Ask Questions	2011	VLDB	0.00014208622
890	Integrating Conflicting Data: The Role of Source Dependence	2009	VLDB	0.00013382697
2,165	Demonstration of Qurk: A Query Processor for Human Operators	2011	SIGMOD	9.0507521e-05
3,052	Online Data Fusion	2011	VLDB	7.8105426e-05

Semantically Similar Papers

#	Overall Rank	Paper	Year	Venue
1	933	Question Selection for Crowd Entity Resolution	2013	VLDB
2	5,343	Crowdsourcing Applications and Platforms: A Data Management Perspective	2011	VLDB
3	8,495	CrowdGame: A Game-Based Crowdsourcing System for Cost-Effective Data Labeling	2019	SIGMOD
4	90	CrowdDB: Answering Queries with Crowdsourcing	2011	SIGMOD
5	3,262	iCrowd: An Adaptive Crowdsourcing Framework	2015	SIGMOD
6	5,474	CrowdQ: Crowdsourced Query Understanding	2013	CIDR
7	2,626	Scaling Up Crowd-Sourcing to Very Large Datasets: A Case for Active Learning	2015	VLDB
8	3,904	QASCA: A Quality-Aware Task Assignment System for Crowdsourcing Applications	2015	SIGMOD
9	5,143	An Online Cost Sensitive Decision-Making Method in Crowdsourcing Systems	2013	SIGMOD
10	7,357	Crowdsourced Data Management: Overview and Challenges	2017	SIGMOD