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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 25 of 75 citing papers.

Rank Citing Paper Year Venue Pagerank
7,580 Human-in-the-loop Outlier Detection 2020 SIGMOD 4.7023767e-05
7,667 Human-in-the-loop Data Integration 2017 VLDB 4.6791871e-05
7,780 A Natural Language Interface for Querying General and Individual Knowledge 2015 VLDB 4.6489024e-05
8,510 Understanding Workers, Developing Effective Tasks, and Enhancing Marketplace Dynamics: A Study of a Large Crowdsourcing Marketplace 2017 VLDB 4.4904732e-05
8,668 Algorithmic Complexity Attacks on Dynamic Learned Indexes 2024 VLDB 4.4671214e-05
8,690 Managing General and Individual Knowledge in Crowd Mining Applications 2015 CIDR 4.4618888e-05
8,691 CrowdMiner: Mining association rules from the crowd 2013 VLDB 4.4618888e-05
9,011 Anthropocentric Data Systems 2011 VLDB 4.4059589e-05
9,043 Query-Guided Resolution in Uncertain Databases 2023 SIGMOD 4.3997447e-05
9,055 A Data Quality Metric (DQM): How to Estimate the Number of Undetected Errors in Data Sets 2017 VLDB 4.3997447e-05
9,493 Lingua Manga : A Generic Large Language Model Centric System for Data Curation 2023 VLDB 4.3300131e-05
9,728 Semantic Integrity Constraints: Declarative Guardrails for AI-Augmented Data Processing Systems 2025 VLDB 4.2901665e-05
10,277 SemBench: A Benchmark for Semantic Query Processing Engines 2026 VLDB 4.1905499e-05
10,406 User-Centric Property Graph Repairs 2025 SIGMOD 4.1905499e-05
10,462 ScaleLLM: A Technique for Scalable LLM-augmented Data Systems 2025 SIGMOD 4.1905499e-05
11,713 A Rating-Ranking Method for Crowdsourced Top-k Computation 2018 SIGMOD 4.1905499e-05
11,778 Staging User Feedback toward Rapid Conflict Resolution in Data Fusion 2017 SIGMOD 4.1905499e-05
11,796 CDB: Optimizing Queries with Crowd-Based Selections and Joins 2017 SIGMOD 4.1905499e-05
11,818 A Confidence-Aware Top-k Query Processing Toolkit on Crowdsourcing 2017 VLDB 4.1905499e-05
11,824 DOCS: Domain-Aware Crowdsourcing System 2017 VLDB 4.1905499e-05
11,900 Looking at Everything in Context 2015 CIDR 4.1905499e-05
11,910 The Importance of Being Expert: Efficient Max-Finding in Crowdsourcing 2015 SIGMOD 4.1905499e-05
12,017 TransactiveDB: Tapping into Collective Human Memories 2014 VLDB 4.1905499e-05
12,121 Mob Data Sourcing 2012 SIGMOD 4.1905499e-05
12,154 DrillBeyond: Enabling Business Analysts to Explore the Web of Open Data 2012 VLDB 4.1905499e-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