packet selection: open issues

[Tanja Zseby <zseby@fokus.fraunhofer.de>]

          Hi, 
 
 here are the remaining open issues for the packet selection (PS) draft.
Please comment on them until December 5.
 
 PS-1: Configuration of non-uniform probabilistic and flow-state sampling:
should we specify some functions exemplarily ? 
Problem: For both methods theoretical proposals exist in research, but they
are not yet mature. Furthermore the paramters for the schemes differ for
different proposed methods. So we can not define parameters for the general
scheme. Only give exemplarily parameters for specific schemes  (e.g. sample
and hold). But this may also lead  to the interpretation that psamp prefers
certain methods.
Proposed Solution: Only define the method and leaf the specification of explicite
schemes (and parametes) up to vendors (e.g. as extension of the info model)

PS-2: Terminology: approximate selection
Problem: Should hash based sampling be described as "Random sampling emulation"
or as "random sampling approximation" or is there a better term for this
?
Proposed Solution: find a better term

PS-3: Operating time 
Problem: The start and stop time of the sampling process is currently part
of the Info Model. But the start of a new scheme could be also configured
by the application by simply installing a new scheme. 
 Proposed solution: remove it from info model
 
PS-4: Integration of hash-functions: 
 Problem: Should some selected hash functions (from the hash-function draft)
become part of the PS draft ?
 Proposed Solution: select 2-3 functions and put description into PS draft

 Regards
 Tanja
 
-- 
Dipl.-Ing. Tanja Zseby			    	      	
Fraunhofer Institute FOKUS			Email: zseby@fokus.fraunhofer.de	
Kaiserin-Augusta-Allee 31			Phone: +49-30-3463-7153
D-10589 Berlin, Germany				Fax:   +49-30-3463-8153
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