FAQ: Questions Asked Frequently
Summary: Defines FAQ, a unifying formalism for CSPs, PGMs, matrix ops, joins and logic, and presents InsideOut, a variable-elimination algorithm that leverages fractional edge covers and worst-case optimal join techniques. Characterizes semantically equivalent variable orderings and gives a polytime approximation to minimize fractional FAQ-width. (summarized by gpt-5-mini on Feb 09 2026)
Incoming Non-self Citations Over Time
Authors
- 1. Mahmoud Abo Khamis (LogicBlox; State University of New York at Buffalo)
- 2. Hung Q. Ngo (LogicBlox; State University of New York at Buffalo)
- 3. Atri Rudra (State University of New York at Buffalo)
BibTeX Citation
@inproceedings{khamis_pods16,
address = {New York, NY, USA},
series = {{PODS} '16},
title = {{FAQ: Questions Asked Frequently}},
url = {https://dl.acm.org/doi/10.1145/2902251.2902280},
doi = {10.1145/2902251.2902280},
booktitle = {Proceedings of the {ACM} {SIGMOD} Symposium on {Principles} of {Database} {Systems}},
publisher = {Association for Computing Machinery},
author = {Khamis, Mahmoud Abo and Ngo, Hung Q. and Rudra, Atri},
year = {2016}
}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 |
|---|---|---|---|---|
| 402 | Worst-case Optimal Join Algorithms | 2012 | PODS | 0.00019104625 |
| 466 | Design and Implementation of the LogicBlox System | 2015 | SIGMOD | 0.00017773029 |
| 849 | Aggregation and Ordering in Factorised Databases | 2013 | VLDB | 0.00013504405 |
| 978 | Incremental Query Evaluation in a Ring of Databases | 2010 | PODS | 0.00012731074 |
| 1,690 | Robbers, Marshals, and Guards: Game Theoretic and Logical Characterizations of Hypertree Width | 2001 | PODS | 9.8609347e-05 |
| 1,725 | Beyond Worst-case Analysis for Joins with Minesweeper | 2014 | PODS | 9.7902443e-05 |
| 1,812 | Joins via Geometric Resolutions: Worst-case and Beyond | 2015 | PODS | 9.5803973e-05 |
| 2,481 | Counting Solutions to Conjunctive Queries: Structural and Hybrid Tractability | 2014 | PODS | 8.403072e-05 |
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