99 citations · 200 across the 30 of their papers we have counts for
25 papers · 1 filter
Indexicon: A Spatial Indexing Library
Panagiotis Simatis, Panagiotis Bouros, Nikos Mamoulis
Spatial indexing is foundational to Geographic Information Systems (GIS) and multi-dimensional data management, yet the current open-source landscape poses a significant barrier to…
In-memory Multidimensional Indexing Using the skd-tree
Achilleas Michalopoulos, Dimitrios Tsitsigkos, Nikos Mamoulis
In this paper, we revisit the problem of indexing multi-dimensional data in memory for the efficient support of multi-dimensional range queries and nearest neighbor queries. This i…
CRISP: Correlation-Resilient Indexing via Subspace Partitioning
Dimitris Dimitropoulos, Achilleas Michalopoulos, Dimitrios Tsitsigkos +1
As the dimensionality of modern learned representations increases to thousands of dimensions, the state-of-the-art Approximate Nearest Neighbor (ANN) indices exhibit severe limitat…
Toward Temporal Attribution Analytics in Dataflows
Chrysanthi Kosyfaki, Ruiyuan Zhang, Nikos Mamoulis +1
Data provenance (the process of determining the origin and derivation of data outputs) has applications across multiple domains including explaining database query results and audi…
Spatio-temporal flow patterns
Chrysanthi Kosyfaki, Nikos Mamoulis, Reynold Cheng +1
Transportation companies and organizations routinely collect huge volumes of passenger transportation data. By aggregating these data (e.g., counting the number of passengers going…
Two-layer Space-oriented Partitioning for Non-point Data
Dimitrios Tsitsigkos, Panagiotis Bouros, Konstantinos Lampropoulos +2
Non-point spatial objects (e.g., polygons, linestrings, etc.) are ubiquitous. We study the problem of indexing non-point objects in memory for range queries and spatial intersectio…