Clarification on Supported Input Formats in RI

[Syzseisus]

Hello,

First of all, I appreciate with your great work.

I've been examining the RI tool and noticed a discrepancy between the input formats listed in the README and those described in the ri3.cpp file's usage function.

In the README, five input formats are described:

• gfd: directed graphs with attributes only on nodes.
• gfu: undirected graphs with attributes only on nodes.
• ged: directed graphs with attributes on nodes and edges.
• geu: undirected graphs with attributes on nodes and edges.
• vfu: Sansone et al. file format for labeled directed graphs with node attributes only.

However, the usage function in ri3.cpp lists the following formats:

• gfu: undirected graphs with labels on nodes.
• gfd: directed graphs with labels on nodes.
• gfd: directed graphs with a single label on nodes.
• geu: undirected graphs with labels on nodes and edges.
• ged: directed graphs with labels on nodes.

This discrepancy is quite puzzling. Could you please clarify which is the correct set of supported formats? Also, in cases where node labels are entirely absent, can we consider it equivalent to the "direct graphs with one single label on nodes" format as described in the third line of ri3.cpp's usage function?

Thank you for your assistance.

Sincerely,
Syz