Graphene

Visualizing algorithms' strengths and weakness in a dataset through Instance Space Analysis.


Graphene is an analytical tool designed to assist the understanding of the difficulty level of individual instances (Instance Hardness) in a dataset and also to trace regions where each algorithm is expected to perform well.

Demo Mode

Within this page you can visualize simple datasets and interact with their instance space representation. The 2D problems help to get insight into each hardness measure.

Graphene App

Explore the full power of the tool to analyze your own dataset. You can select points of high difficulty and download the corresponding instances. The footprint area helps you visualizing regions where an algorithm performed well or poorly.

Settings

Configure each step of the process, like hyper-parameter optimization for a better algorithm performance assessment; or feature selection to filter the best meta features. You can also choose which hardness measures to calculate and which algorithms to evaluate.