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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
4372
Venue
SIGMOD
Year
2011
Pagerank
0.00051273089
Overall Rank
94 | 99.35%
DOI
-

Incoming Non-self Citations Over Time

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Incoming Citations (Sorted by Pagerank)

Showing 50 of 75 citing papers.

Rank Citing Paper Year Venue Pagerank
265 CrowdER: Crowdsourcing Entity Resolution 2012 VLDB 0.00029904018
266 Human-powered Sorts and Joins 2012 VLDB 0.00029884758
641 Corleone: Hands-Off Crowdsourcing for Entity Matching 2014 SIGMOD 0.00018759417
705 Magellan: Toward Building Entity Matching Management Systems 2016 VLDB 0.00017779048
854 So Who Won? Dynamic Max Discovery with the Crowd 2012 SIGMOD 0.00015879917
863 Leveraging Transitive Relations for Crowdsourced Joins 2013 SIGMOD 0.00015793243
1,154 CrowdScreen: Algorithms for Filtering Data with Humans 2012 SIGMOD 0.00013616867
1,242 Question Selection for Crowd Entity Resolution 2013 VLDB 0.00013088272
1,491 CDAS: A Crowdsourcing Data Analytics System 2012 VLDB 0.00011685731
1,839 DocETL: Agentic Query Rewriting and Evaluation for Complex Document Processing 2025 VLDB 0.00010351287
1,845 dbTouch: Analytics at your Fingertips 2013 CIDR 0.00010339281
1,883 CrowdDB: Query Processing with the VLDB Crowd 2011 VLDB 0.00010208032
2,121 Demonstration of Qurk: A Query Processor for Human Operators 2011 SIGMOD 9.4930973e-05
2,176 Falcon: Scaling Up Hands-Off Crowdsourced Entity Matching to Build Cloud Services 2017 SIGMOD 9.3729351e-05
2,255 Counting with the Crowd 2013 VLDB 9.1846281e-05
2,366 Data Market Platforms: Trading Data Assets to Solve Data Problems 2020 VLDB 8.9521259e-05
2,796 Finish Them!: Pricing Algorithms for Human Computation 2014 VLDB 8.1119959e-05
2,805 Query-Oriented Data Cleaning with Oracles 2015 SIGMOD 8.103731e-05
2,814 Deco: A System for Declarative Crowdsourcing 2012 VLDB 8.0807229e-05
2,944 Truth Inference in Crowdsourcing: Is the Problem Solved? 2017 VLDB 7.8457167e-05
3,020 Scaling Up Crowd-Sourcing to Very Large Datasets: A Case for Active Learning 2015 VLDB 7.6987905e-05
3,071 CrowdFill: Collecting Structured Data from the Crowd 2014 SIGMOD 7.6120337e-05
3,104 Crowd Mining 2013 SIGMOD 7.5577057e-05
3,268 QASCA: A Quality-Aware Task Assignment System for Crowdsourcing Applications 2015 SIGMOD 7.3027561e-05
3,324 iCrowd: An Adaptive Crowdsourcing Framework 2015 SIGMOD 7.2163115e-05
3,803 Revisiting Prompt Engineering via Declarative Crowdsourcing 2024 CIDR 6.7498941e-05
3,939 CrowdQ: Crowdsourced Query Understanding 2013 CIDR 6.6099823e-05
4,022 Exploiting Correlations for Expensive Predicate Evaluation 2015 SIGMOD 6.5185189e-05
4,181 Arnold: Declarative Crowd-Machine Data Integration 2013 CIDR 6.3725128e-05
4,281 GenEdit: Compounding Operators and Continuous Improvement to Tackle Text-to-SQL in the Enterprise 2025 CIDR 6.2824978e-05
4,453 CLAMShell: Speeding up Crowds for Low-latency Data Labeling 2016 VLDB 6.1690121e-05
4,462 Magellan: Toward Building Entity Matching Management Systems over Data Science Stacks 2016 VLDB 6.1566477e-05
4,483 Optimal Crowd-Powered Rating and Filtering Algorithms 2014 VLDB 6.1431599e-05
4,529 Hybrid Querying Over Relational Databases and Large Language Models 2025 CIDR 6.1057096e-05
4,617 Crowd-Based Deduplication: An Adaptive Approach 2015 SIGMOD 6.0400801e-05
4,648 Whom to Ask? Jury Selection for Decision Making Tasks on Micro-blog Services 2012 VLDB 6.01726e-05
4,662 Argonaut: Macrotask Crowdsourcing for Complex Data Processing 2015 VLDB 6.006757e-05
4,832 An Online Cost Sensitive Decision-Making Method in Crowdsourcing Systems 2013 SIGMOD 5.8883457e-05
5,080 Reducing Uncertainty of Schema Matching via Crowdsourcing 2013 VLDB 5.7081186e-05
5,254 CDB: A Crowd-Powered Database System 2018 VLDB 5.5991922e-05
5,369 Cost-Effective Crowdsourced Entity Resolution: A Partial-Order Approach 2016 SIGMOD 5.5436995e-05
5,429 Logical and Physical Optimizations for SQL Query Execution over Large Language Models 2025 SIGMOD 5.511638e-05
5,458 Crowdsourcing Applications and Platforms: A Data Management Perspective 2011 VLDB 5.4952003e-05
6,801 Query Optimization over Crowdsourced Data 2013 VLDB 4.9175463e-05
6,873 Cost-Effective Data Annotation using Game-Based Crowdsourcing 2019 VLDB 4.8963037e-05
6,943 Estimating the Impact of Unknown Unknowns on Aggregate Query Results 2016 SIGMOD 4.8876509e-05
7,112 Answering Planning Queries with the Crowd 2013 VLDB 4.8227734e-05
7,116 Crowdsourced Data Management: Overview and Challenges 2017 SIGMOD 4.8219732e-05
7,534 Interactive Graph Search 2019 SIGMOD 4.7133212e-05
7,577 Pushing the Boundaries of Crowd-enabled Databases with Query-driven Schema Expansion 2012 VLDB 4.703047e-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
118 Answering Queries using Humans, Algorithms and Databases 2011 CIDR 0.00045860394
152 Optimizing Queries across Diverse Data Sources 1997 VLDB 0.00040979242
246 Crowdsourced Databases: Query Processing with People 2011 CIDR 0.00030952631
469 On Saying "Enough Already!" in SQL 1997 SIGMOD 0.00022397468
691 Human-Assisted Graph Search: It’s Okay to Ask Questions 2011 VLDB 0.00018068414
699 Query Execution Techniques for Caching Expensive Methods 1996 SIGMOD 0.0001794078
4,117 PIQL: A Performance Insightful Query Language 2010 SIGMOD 6.4319226e-05
5,053 Crowds, Clouds, and Algorithms: Exploring the Human Side of "Big Data" Applications 2010 SIGMOD 5.724912e-05
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Semantically Similar Papers

Overall Rank Paper Year Venue Pagerank
1,154 CrowdScreen: Algorithms for Filtering Data with Humans 2012 SIGMOD 0.00013616867
2,121 Demonstration of Qurk: A Query Processor for Human Operators 2011 SIGMOD 9.4930973e-05
5,458 Crowdsourcing Applications and Platforms: A Data Management Perspective 2011 VLDB 5.4952003e-05
266 Human-powered Sorts and Joins 2012 VLDB 0.00029884758
7,577 Pushing the Boundaries of Crowd-enabled Databases with Query-driven Schema Expansion 2012 VLDB 4.703047e-05
11,796 CDB: Optimizing Queries with Crowd-Based Selections and Joins 2017 SIGMOD 4.1905499e-05
5,254 CDB: A Crowd-Powered Database System 2018 VLDB 5.5991922e-05
246 Crowdsourced Databases: Query Processing with People 2011 CIDR 0.00030952631
3,939 CrowdQ: Crowdsourced Query Understanding 2013 CIDR 6.6099823e-05
1,883 CrowdDB: Query Processing with the VLDB Crowd 2011 VLDB 0.00010208032