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 50 of 76 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 |
|---|---|---|---|---|
| 171 | Optimizing Queries across Diverse Data Sources | 1997 | VLDB | 0.00027363924 |
| 250 | Answering Queries using Humans, Algorithms and Databases | 2011 | CIDR | 0.00023261164 |
| 251 | Crowdsourced Databases: Query Processing with People | 2011 | CIDR | 0.00023261113 |
| 380 | On Saying "Enough Already!" in SQL | 1997 | SIGMOD | 0.00019563191 |
| 767 | Human-Assisted Graph Search: It’s Okay to Ask Questions | 2011 | VLDB | 0.00014208622 |
| 801 | Query Execution Techniques for Caching Expensive Methods | 1996 | SIGMOD | 0.00013909408 |
| 5,747 | PIQL: A Performance Insightful Query Language | 2010 | SIGMOD | 6.1017514e-05 |
| 6,097 | Crowds, Clouds, and Algorithms: Exploring the Human Side of "Big Data" Applications | 2010 | SIGMOD | 5.9780216e-05 |
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| 1 | 997 | CrowdScreen: Algorithms for Filtering Data with Humans | 2012 | SIGMOD |
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| 9 | 5,474 | CrowdQ: Crowdsourced Query Understanding | 2013 | CIDR |
| 10 | 1,810 | CrowdDB: Query Processing with the VLDB Crowd | 2011 | VLDB |