How to decode the output leaves?

[FernandoLpz]

By running some tests I used to get an output like this:

[(37,), (-37, 38), (-38, -37, -1), (-38, -37, 1)]

How to decode them? I did assume that these are indexes which correspond to give feature name so I decode each number by its respective name, however by doing in this way the result does not make me any sense. Could you provide a simple example in order to understand how to build the tree topology given this list?

Thanks.