GTree

GTree is a designation used in computing for several tree-based data structures and software projects. It is commonly used to organize hierarchical data and support fast queries on large datasets. The term does not refer to a single standard and variants vary by implementation.

In many uses, a GTree comprises nodes that partition data into subgroups, with internal nodes representing groupings and leaves containing actual data items or pointers. The structure allows hierarchical pruning during queries, reducing search space. Dynamic variants support online updates, while static variants optimize for read-only workloads.

Common applications include graph indexing and similarity search, trajectory and spatial data indexing, and large-scale data analytics. GTree implementations are often used in information retrieval systems, graph databases, and machine learning pipelines where hierarchical organization improves performance.

There is no universal specification for GTree; different projects may implement different branching schemes, partitioning strategies, and data representations. For precise behavior, consult the documentation of a specific GTree project.

See also: Tree data structure, Graph database, Indexing structures, R-tree, B-tree, Quadtree, kd-tree.