XGMML

XGMML, or Extensible Graph Markup and Modeling Language, is an XML-based file format used for representing graph data. It is designed to be flexible and extensible, allowing for the inclusion of various attributes and metadata associated with nodes and edges in a graph. XGMML can describe a wide range of graph structures, including directed and undirected graphs, trees, and networks.

The primary purpose of XGMML is to facilitate the exchange of graph data between different software applications and systems. Its XML structure makes it human-readable and machine-parsable, simplifying data integration and interoperability. The format supports the definition of custom data types and attributes, enabling users to represent complex graph properties beyond simple node and edge connections. This extensibility is a key feature, allowing XGMML to be adapted for specialized applications in fields such as bioinformatics, social network analysis, and computer science.

XGMML files typically contain a root element that encapsulates the entire graph. Within this root, individual nodes and edges are defined. Each node can have properties like an ID, label, and custom attributes. Similarly, edges, which represent connections between nodes, can also be annotated with attributes. The language provides a standardized way to describe these elements and their relationships, making it a valuable tool for visualizing and analyzing graph-based information.