error running asmoses if _loc is null_vertex then it must have only one child

[noskill]

I got error running asmoses on a dataset

terminate called after throwing an instance of 'opencog::AssertionException'
  what():  if _loc is null_vertex then it must have only one child (/home/noskill/projects/sing-asmoses/opencog/moses/representation/knobs.cc:216)
Aborted (core dumped)

log1.txt.log

here is a smaller version of dataset where the bug still reproducible:

cancer_bin_100_small.txt

asmoses -i /tmp/cancer_bin_100_small.csv --log-file log1.txt.log   -l debug --noise 0.2  -u posOutcome

There is no error without --noise 0.2 on the smaller version of dataset, but on full dataset the error still happens.

[kasimebrahim]

This happened because some of your input features are enum and this should not be specific to asmoses[but moses as well]. And the problem is while constructing boolean representation only arguments of boolean and contin types are handled. When it faced enum argument it created a crippled knob.

I can make it gracefully ignore such knobs to avoid such exception but ultimately it is not a solution at all. So I recommend binarizing your dataset for now.

@ngeiswei if you have a solution I can work on it.

[ngeiswei]

@kasimebrahim, I'm seeing that enum isn't supported in several places, like even in the interpreter, so I suppose for now unless @noskill you really want to try input enums (output should work already, but not input) we should let it aside.

[noskill]

I use contin instead of enum for now. I don't have an intuition about what difference adding better enum support would add.

[noskill]

Is feature selection working on boolean + enum features?

[ngeiswei]

@noskill asked

Is feature selection working on boolean + enum features?

No, according to

asmoses/opencog/data/table/table.h

Line 1270 in 2d7fe0c

OC_ASSERT(id::boolean_type == otype, "Only boolean types supported");