SUMMARY: encoding missing values

[Lutz Prechelt]

A few days ago, I posted some thoughts about how to represent missing
input values to a neural network and asked for comments and further ideas.
This message is a summary of the replies I received (some in my personal mail
some in connectionists).  I show the most significant comments and ideas
and append versions of the messages that are trimmed to the most important parts
(in case somebody wants to keep this discussion in his/her archive)

This was my original message:

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