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Subject: Hi, I have a question about Aspiration Search and PVS

Author: Igor Polyakov

Date: 15:30:29 04/06/03


In aspiration search, the "estimated" values for Alpha and Beta, are they aimed
to cause cut-offs in the very first part of the tree without having to generate
Alpha and Beta values by evaluating the branch completely? Can you please
provide a very detailed response? I am kind of confused on WHY it's an
improvement since I only see improvement in one branch with the risk of doing
re-searches.

About PVS and null windows...how do null windows cause more cut-offs? I would
really appreciate if you pointed me to a very good website with detailed
explanation, and a lot of pictures, etc. I kind of don't get it.

Thank you for your time.



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