X2Q: Your Personal Example-based Graph Explorer
Summary: X2Q introduces a flexible multi-exemplar query paradigm for interactive knowledge-graph exploration. Iteratively builds examples, presents partial results and improvement suggestions, and uses user feedback to filter irrelevant options, with real-time answers on Freebase. (summarized by gpt-5-nano on Feb 09 2026)
Incoming Non-self Citations Over Time
Authors
- 1. Matteo Lissandrini (University of Trento)
- 2. Davide Mottin (Hasso Plattner Institute)
- 3. Yannis Velegrakis (University of Trento)
- 4. Themis Palpanas (Paris Descartes University)
BibTeX Citation
@article{lissandrini_vldb18,
title = {{X2Q: Your Personal Example-based Graph Explorer}},
author = {Lissandrini, Matteo and Mottin, Davide and Velegrakis, Yannis and Palpanas, Themis},
journal = {PVLDB},
series = {{VLDB} '18},
volume = {11},
number = {12},
pages = {2026--2029},
doi = {10.14778/3229863.3236251},
url = {https://doi.org/10.14778/3229863.3236251},
year = {2018}
}Incoming Citations (Sorted by Pagerank)
Showing 2 of 2 citing papers.
| Rank | Citing Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 10,549 | Love-at-First-Sight: First Answers Without the Awkward Silence in Big Knowledge Graphs | 2026 | VLDB | 5.093636e-05 |
| 11,865 | NAVIGATE: Explainable Visual Graph Exploration by Examples | 2019 | SIGMOD | 5.093636e-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 |
|---|---|---|---|---|
| 2,429 | Visual Graph Query Construction and Refinement | 2017 | SIGMOD | 8.5886167e-05 |
| 3,056 | VIIQ: Auto-Suggestion Enabled Visual Interface for Interactive Graph Query Formulation | 2015 | VLDB | 7.8075329e-05 |
| 5,568 | Explaining and Querying Knowledge Graphs by Relatedness | 2017 | VLDB | 6.1708873e-05 |
| 6,200 | New Trends on Exploratory Methods for Data Analytics | 2017 | VLDB | 5.9457282e-05 |
| 7,077 | Sapphire: Querying RDF Data Made Simple | 2016 | VLDB | 5.709875e-05 |
| 7,301 | PICASSO: Exploratory Search of Connected Subgraph Substructures in Graph Databases | 2017 | VLDB | 5.6506327e-05 |
| 7,837 | Searching with XQ: the eXemplar Query Search Engine | 2014 | SIGMOD | 5.5344136e-05 |
| 10,037 | Graph Exploration: From Users to Large Graphs | 2017 | SIGMOD | 5.1729561e-05 |
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Semantically Similar Papers
| # | Overall Rank | Paper | Year | Venue |
|---|---|---|---|---|
| 1 | 11,865 | NAVIGATE: Explainable Visual Graph Exploration by Examples | 2019 | SIGMOD |
| 2 | 11,880 | PivotE: Revealing and Visualizing the Underlying Entity Structures for Exploration | 2019 | VLDB |
| 3 | 12,434 | Exploratory Keyword Search on Data Graphs | 2010 | SIGMOD |
| 4 | 11,320 | VQFT: A Visual Query Approach Based on Full-Text Search for Knowledge Graphs | 2024 | VLDB |
| 5 | 10,023 | A Universal Question-Answering Platform for Knowledge Graphs | 2023 | SIGMOD |
| 6 | 4,372 | Schemaless and Structureless Graph Querying | 2014 | VLDB |
| 7 | 11,918 | GExp: Cost-aware Graph Exploration with Keywords | 2018 | SIGMOD |
| 8 | 10,037 | Graph Exploration: From Users to Large Graphs | 2017 | SIGMOD |
| 9 | 3,604 | SLQ: A User-friendly Graph Querying System | 2014 | SIGMOD |
| 10 | 7,837 | Searching with XQ: the eXemplar Query Search Engine | 2014 | SIGMOD |