Data Structures and Algorithms

    

Greggle & Gruggle: Composable Regular Path Queries and Graph Manipulation

Authors: Sambuddha Majumder, Jayanta Majumder, Partha P. Chakrabarti

Greggle is a small query language and tool for performing regular path queries over labelled directed graphs. Gruggle is a companion Node.js utility for ingesting, merging, inspecting, and lightly manipulating graphs in the Graphviz dot format. Graphviz is a widely used system for graph visualization; its dot language is simple to author and makes it easy to view results with standard Graphviz tools. Together the two utilities provide a frictionless workflow: Gruggle builds, merges, filters, and styles graphs; Greggle answers expressive path queries with edge—level predicates; and Gruggle can consume Greggle’s annotations (e.g., find-path) to visualize witnesses. This document presents both tools, why they are complementary, and how they can be used jointly in analysis and visualization tasks.

Comments: 22 Pages.

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[v1] 2026-01-25 21:09:30

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