House of Graphs 2.0: a database of interesting graphs and more

TL;DR

The paper introduces House of Graphs 2.0, a modernized, expandable database of interesting graphs that includes new features, improved user experience, and maintains its role as a resource for extremal and counterexample graphs.

Contribution

It presents a complete rebuild of the House of Graphs website using modern frameworks, adding new functionalities and improving maintainability and user experience.

Findings

Successfully implemented a modern, maintainable web platform.

Expanded database with new interesting graphs and features.

Enhanced user interface and interaction capabilities.

Abstract

In 2012 we announced the House of Graphs (https://houseofgraphs.org) [Discrete Appl. Math. 161 (2013), 311-314], which was a new database of graphs. The House of Graphs hosts complete lists of graphs of various graph classes, but its main feature is a searchable database of so called "interesting" graphs, which includes graphs that already occurred as extremal graphs or as counterexamples to conjectures. An important aspect of this database is that it can be extended by users of the website. Over the years, several new features and graph invariants were added to the House of Graphs and users uploaded many interesting graphs to the website. But as the development of the original House of Graphs website started in 2010, the underlying frameworks and technologies of the website became outdated. This is why we completely rebuilt the House of Graphs using modern frameworks to build a maintainable and expandable web application that is future-proof. On top of this, several new functionalities were added to improve the application and the user experience. This article describes the changes and new features of the new House of Graphs website.