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)
Incoming Non-self Citations Over Time
Authors
- 1. Michael J. Franklin (University of California Berkeley)
- 2. Donald Kossmann (ETH Zurich)
- 3. Tim Kraska (University of California Berkeley)
- 4. Sukriti Ramesh (ETH Zurich)
- 5. Reynold Xin (University of California Berkeley)
BibTeX Citation
@inproceedings{franklin_sigmod11,
title = {{CrowdDB: Answering Queries with Crowdsourcing}},
author = {Franklin, Michael J. and Kossmann, Donald and Kraska, Tim and Ramesh, Sukriti and Xin, Reynold},
series = {{SIGMOD} '11},
booktitle = {Proceedings of the {ACM} {SIGMOD} International Conference on Management of Data},
publisher = {Association for Computing Machinery},
doi = {10.1145/1989323.1989331},
url = {https://dl.acm.org/doi/10.1145/1989323.1989331},
year = {2011}
}Incoming Citations (Sorted by Pagerank)
Showing 27 of 77 citing papers.
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 |
|---|---|---|---|---|
| 174 | Optimizing Queries across Diverse Data Sources | 1997 | VLDB | 0.00026736308 |
| 257 | Crowdsourced Databases: Query Processing with People | 2011 | CIDR | 0.00022914527 |
| 260 | Answering Queries using Humans, Algorithms and Databases | 2011 | CIDR | 0.00022866018 |
| 398 | On Saying "Enough Already!" in SQL | 1997 | SIGMOD | 0.00019117739 |
| 788 | Human-Assisted Graph Search: It’s Okay to Ask Questions | 2011 | VLDB | 0.00013946699 |
| 822 | Query Execution Techniques for Caching Expensive Methods | 1996 | SIGMOD | 0.00013616674 |
| 5,884 | PIQL: A Performance Insightful Query Language | 2010 | SIGMOD | 5.9423067e-05 |
| 6,241 | Crowds, Clouds, and Algorithms: Exploring the Human Side of "Big Data" Applications | 2010 | SIGMOD | 5.8229648e-05 |
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| 1 | 991 | CrowdScreen: Algorithms for Filtering Data with Humans | 2012 | SIGMOD |
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| 3 | 5,478 | Crowdsourcing Applications and Platforms: A Data Management Perspective | 2011 | VLDB |
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| 9 | 5,627 | CrowdQ: Crowdsourced Query Understanding | 2013 | CIDR |
| 10 | 1,861 | CrowdDB: Query Processing with the VLDB Crowd | 2011 | VLDB |