Demo Data from VLDB 2026 / reviewers in the wild / expert
Theodore Stefou
dblp:325/9449
· DBLP profile ↗
1ranked-venue papers
0as first author
1since 2021 · last 2022
—ORCID · none
Domains — the database's venue-derived domains; a paper can count in several
Databases, data management, data science and information retrieval · 1 · 1 since 2021
Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.
| Computer architecture, parallel and distributed computing, and storage systems
1 paper |
Storage systems · 50% Emerging computing paradigms · 50% | |
| Databases, data mining, and information retrieval
1 paper |
Graph data management · 100% |
Topics — the 3 heaviest of 3, each with the papers that count most for it
| Topic | Weight | Papers | Last | Evidence papers |
|---|---|---|---|---|
Graph data management
graph compression |
0.6 | 1 | 2022 | On Compressing Temporal Graphs · ICDE 2022 |
Storage systems
data compression |
0.6 | 1 | 2022 | On Compressing Temporal Graphs · ICDE 2022 |
Emerging computing paradigms
graph representation |
0.6 | 1 | 2022 | On Compressing Temporal Graphs · ICDE 2022 |
Methods — techniques the papers use, named apart from their topics
temporal encoding · 1.1dual-representation · 1.1
| Year | Publication | Venue | Position |
|---|---|---|---|
| 2022 | On Compressing Temporal GraphsabstractContemporary data-systems empowering the daily human activity are routinely represented with graphs. During the last decade, the volume growth of such systems has been unprece-dented. This hinders the timely analysis of the formed networks due to existing physical memory limitations and significant I/O overheads. Graph compression techniques have managed to reduce memory requirements and allow for representing such networks using a few bits-per-edge. Respective approaches offer succinct mappings for social, biological, and information networks while allowing for the efficient access of sought graph elements. Despite their success, such methods mostly focus on static graphs, and predominantly offer access to either a snapshot or an aggregated view of a network. In reality however, networks change over time and, in many instances, we are interested in capturing and studying this evolution. In this paper we propose a framework for compressing emerging temporal graphs based on a dual-representation which articulates both network structure and corresponding temporal information. We empirically establish properties exhibited by community-networks regarding their time aspect(s) and harness these features in our proposed repre-sentation. Our experimental evaluation demonstrates that our approach for compressing temporal graphs readily outperforms competing techniques, attaining compression ratios that are on average around 60% of the space required by state-of-the-art techniques. Moreover, our memory-efficient representation yields more than 70 % faster graph compression and orders of magnitude quicker retrieval of graphs' elements, especially when it comes to large-scale networks. Finally, our framework is the first effort we are aware of, that considers actual time instead of time steps. This helps us attain better control for the size of our representation and reap further memory savings. Panagiotis Liakos, Katia Papakonstantinopoulou, Theodore Stefou, Alex Delis |
ICDE | 3 |