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Subject: Some comments to various replies

Author: Steven Edwards

Date: 06:35:37 12/01/03

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Some comments to various replies:

1. The proposed fingerprinting scheme is not intended to detect cloning of code
that is not immediately related to move selection (why bother?), so criticisms
on that basis are irrelevent.

2. If the test suite is run through the same interface that is used to play
games in the event, then intentional faking on the suite is going to be
difficult or impossible to perform.

3. If there is doubt about faking the test suite positions, then an additional
test suite can be made from games actually played it the event.  A difference
here will indicate probabe faking on the initial test suite or certain faking on
the secondary test.

4. The test EPD output will include a PV several moves long for each position.
The probability of non-clone matching declines as the ply increases; the
matching of long chucks of the PV for many different positions would be a risk
too high for a cloner to take.

----------

Writing a similarity tester using EPD input should be a simple task of
mulivariate analysis correlation.  Perhaps I'll do this in an upcoming article
in the _NACCA Journal_.



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