Table to H2O using fingerprints

Is it possible to use fingerprints (e.g. from RDKIT) with the H2O nodes? I’ve seen people using H2O for chemical applications so hoping so, but can’t get it to work myself.

When I try to pass a fingerprint column to the table to H2O node it is not recognised.

Hi @knime_a

I just tried and it seems H2O nodes do not recognize fingerprint data type. Maybe there is a way to get it to work with fingerprints but I’m not aware of how so far.

One possible solution in the meanwhile is to expand the fingerprints column with the -Expand Bit Vector- node, so that you get a column per bit in the fingerprint:

Not a very compact solution but at least feasible for now.

The solution using the -Expand Bit Vector- node should look like as follows:

Hope it helps.
Best
Ael

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Hi @knime_a

A workflow example of what I mentioned before is available now on the KNIME HUB, at the following link:

Best
Ael

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