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CrowdDB: Answering Queries with Crowdsourcing

Summary: CrowdDB extends SQL-based query processing by outsourcing missing or fuzzy results to crowdsourcing. It treats crowd input as a first-class data source under a non-closed-world model and introduces crowd-aware operators, with early MTurk experiments. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID
4371
Venue
SIGMOD
Year
2011
Pagerank
0.00051013264
Overall Rank
94 | 99.35%
DOI
-

Incoming Non-self Citations Over Time

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Incoming Citations (Sorted by Pagerank)

Showing 50 of 74 citing papers.

Rank Citing Paper Year Venue Pagerank
263 CrowdER: Crowdsourcing Entity Resolution 2012 VLDB 0.00029862413
267 Human-powered Sorts and Joins 2012 VLDB 0.00029690405
643 Corleone: Hands-Off Crowdsourcing for Entity Matching 2014 SIGMOD 0.00018754451
712 Magellan: Toward Building Entity Matching Management Systems 2016 VLDB 0.00017732426
859 So Who Won? Dynamic Max Discovery with the Crowd 2012 SIGMOD 0.00015870894
866 Leveraging Transitive Relations for Crowdsourced Joins 2013 SIGMOD 0.00015801196
1,164 CrowdScreen: Algorithms for Filtering Data with Humans 2012 SIGMOD 0.00013564823
1,242 Question Selection for Crowd Entity Resolution 2013 VLDB 0.00013096655
1,491 CDAS: A Crowdsourcing Data Analytics System 2012 VLDB 0.00011694982
1,840 dbTouch: Analytics at your Fingertips 2013 CIDR 0.0001034905
1,885 CrowdDB: Query Processing with the VLDB Crowd 2011 VLDB 0.0001021098
1,963 DocETL: Agentic Query Rewriting and Evaluation for Complex Document Processing 2025 VLDB 9.929429e-05
2,123 Demonstration of Qurk: A Query Processor for Human Operators 2011 SIGMOD 9.4945521e-05
2,175 Falcon: Scaling Up Hands-Off Crowdsourced Entity Matching to Build Cloud Services 2017 SIGMOD 9.3644117e-05
2,334 Counting with the Crowd 2013 VLDB 9.0161817e-05
2,359 Data Market Platforms: Trading Data Assets to Solve Data Problems 2020 VLDB 8.9607667e-05
2,792 Finish Them!: Pricing Algorithms for Human Computation 2014 VLDB 8.1197186e-05
2,797 Query-Oriented Data Cleaning with Oracles 2015 SIGMOD 8.1108589e-05
2,809 Deco: A System for Declarative Crowdsourcing 2012 VLDB 8.0869896e-05
2,937 Truth Inference in Crowdsourcing: Is the Problem Solved? 2017 VLDB 7.853108e-05
3,067 CrowdFill: Collecting Structured Data from the Crowd 2014 SIGMOD 7.6180371e-05
3,100 Crowd Mining 2013 SIGMOD 7.5634778e-05
3,118 Scaling Up Crowd-Sourcing to Very Large Datasets: A Case for Active Learning 2015 VLDB 7.5379338e-05
3,263 QASCA: A Quality-Aware Task Assignment System for Crowdsourcing Applications 2015 SIGMOD 7.3097573e-05
3,322 iCrowd: An Adaptive Crowdsourcing Framework 2015 SIGMOD 7.2230626e-05
3,840 Revisiting Prompt Engineering via Declarative Crowdsourcing 2024 CIDR 6.7106924e-05
3,935 CrowdQ: Crowdsourced Query Understanding 2013 CIDR 6.6163464e-05
4,014 Exploiting Correlations for Expensive Predicate Evaluation 2015 SIGMOD 6.5273084e-05
4,185 Arnold: Declarative Crowd-Machine Data Integration 2013 CIDR 6.3776356e-05
4,289 GenEdit: Compounding Operators and Continuous Improvement to Tackle Text-to-SQL in the Enterprise 2025 CIDR 6.2885419e-05
4,451 CLAMShell: Speeding up Crowds for Low-latency Data Labeling 2016 VLDB 6.1738675e-05
4,464 Magellan: Toward Building Entity Matching Management Systems over Data Science Stacks 2016 VLDB 6.1606042e-05
4,479 Optimal Crowd-Powered Rating and Filtering Algorithms 2014 VLDB 6.149053e-05
4,535 Hybrid Querying Over Relational Databases and Large Language Models 2025 CIDR 6.1049669e-05
4,619 Crowd-Based Deduplication: An Adaptive Approach 2015 SIGMOD 6.0444854e-05
4,651 Whom to Ask? Jury Selection for Decision Making Tasks on Micro-blog Services 2012 VLDB 6.022931e-05
4,665 Argonaut: Macrotask Crowdsourcing for Complex Data Processing 2015 VLDB 6.0125329e-05
4,827 An Online Cost Sensitive Decision-Making Method in Crowdsourcing Systems 2013 SIGMOD 5.8938399e-05
5,081 Reducing Uncertainty of Schema Matching via Crowdsourcing 2013 VLDB 5.7132042e-05
5,279 CDB: A Crowd-Powered Database System 2018 VLDB 5.5902418e-05
5,362 Cost-Effective Crowdsourced Entity Resolution: A Partial-Order Approach 2016 SIGMOD 5.5473503e-05
5,450 Crowdsourcing Applications and Platforms: A Data Management Perspective 2011 VLDB 5.5003491e-05
5,840 Logical and Physical Optimizations for SQL Query Execution over Large Language Models 2025 SIGMOD 5.3042561e-05
6,806 Query Optimization over Crowdsourced Data 2013 VLDB 4.9218336e-05
6,868 Cost-Effective Data Annotation using Game-Based Crowdsourcing 2019 VLDB 4.9010083e-05
6,941 Estimating the Impact of Unknown Unknowns on Aggregate Query Results 2016 SIGMOD 4.8924e-05
7,113 Answering Planning Queries with the Crowd 2013 VLDB 4.8274062e-05
7,117 Crowdsourced Data Management: Overview and Challenges 2017 SIGMOD 4.826509e-05
7,535 Interactive Graph Search 2019 SIGMOD 4.7178467e-05
7,572 Pushing the Boundaries of Crowd-enabled Databases with Query-driven Schema Expansion 2012 VLDB 4.7075553e-05
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Outgoing Citations (Sorted by Pagerank)

Showing 8 of 8 cited papers.

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

Rank Cited Paper Year Venue Pagerank
119 Answering Queries using Humans, Algorithms and Databases 2011 CIDR 0.0004564788
151 Optimizing Queries across Diverse Data Sources 1997 VLDB 0.00041016476
249 Crowdsourced Databases: Query Processing with People 2011 CIDR 0.00030740523
470 On Saying "Enough Already!" in SQL 1997 SIGMOD 0.00022393068
697 Human-Assisted Graph Search: It’s Okay to Ask Questions 2011 VLDB 0.00018043655
703 Query Execution Techniques for Caching Expensive Methods 1996 SIGMOD 0.00017916705
4,116 PIQL: A Performance Insightful Query Language 2010 SIGMOD 6.4381114e-05
5,056 Crowds, Clouds, and Algorithms: Exploring the Human Side of "Big Data" Applications 2010 SIGMOD 5.73044e-05
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Semantically Similar Papers

Overall Rank Paper Year Venue Pagerank
1,164 CrowdScreen: Algorithms for Filtering Data with Humans 2012 SIGMOD 0.00013564823
2,123 Demonstration of Qurk: A Query Processor for Human Operators 2011 SIGMOD 9.4945521e-05
5,450 Crowdsourcing Applications and Platforms: A Data Management Perspective 2011 VLDB 5.5003491e-05
267 Human-powered Sorts and Joins 2012 VLDB 0.00029690405
7,572 Pushing the Boundaries of Crowd-enabled Databases with Query-driven Schema Expansion 2012 VLDB 4.7075553e-05
11,788 CDB: Optimizing Queries with Crowd-Based Selections and Joins 2017 SIGMOD 4.1945683e-05
5,279 CDB: A Crowd-Powered Database System 2018 VLDB 5.5902418e-05
249 Crowdsourced Databases: Query Processing with People 2011 CIDR 0.00030740523
3,935 CrowdQ: Crowdsourced Query Understanding 2013 CIDR 6.6163464e-05
1,885 CrowdDB: Query Processing with the VLDB Crowd 2011 VLDB 0.0001021098