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Subject: HashTable upper_bound worthless ?

Author: Larry Griffiths

Date: 20:15:12 02/12/01


Hi,

I created some new hashtable code that boils down to this...

   if(BestScoreSoFar>=beta)
      {
      add lower_bound hash entry
      }

   if(BestSCoreSoFar>alpha)
      {
      add exact hash entry
      }
   else
      {
      add upper_bound hash entry
      }

I see all three types added to my hash table, but it seems that the
upper_bound entries never cause any cutoffs to occur when searching
the hash table.

If I do not add lower_bound hash table entries, then I see some
upper_bound cutoffs occuring.  It acts like the upper_bound entries
get overlayed so often by lower_bound entries so that they never
get seen when searching the hash table.

Is this normal, or is something wrong with my code?

Larry.



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