[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Re: Adam Bosworth on XML and W3C

• From: Eric van der Vlist <vdv@d...>
• To: "Bullard, Claude L (Len)" <clbullar@i...>
• Date: Tue, 09 Oct 2001 19:39:28 +0200

Bullard, Claude L (Len) wrote:

> It depends on the complexity measure suited to the application domain. 


Yes, that's why I wanted to know which was the algorithm used by Björn 
for the W3C specifications.

The length is obviously not a good indicator since if more explanations 
are added, the specification should be easier to understand and not be 
considered as more complex --it can depend on the way the explanations 
are written, though.

Eric


> 
> Approximate entropy is one measure.
> 
> "Approximate entropy is a statistical measure to quantify the regularity in
> relatively short noisy time series. It is defined as the rate of entropy for
> an approximating Markov chain to the process. Useful in deistinguishing
> between correlated stochastic processes and composite
> deterministic/stochastic models."
> http://www.cpm.mmu.ac.uk/~bruce/combib/compref260.html
> 
> Rounds complexity is another
> 
> "rounds complexity, are defined and then illustrated by designing and
> analyzing two algorithms: a parallel summation algorithm which proceeds
> along an implicit complete binary tree and a recursive doubling algorithm
> which proceeds along a linked list. In both cases replacing global
> synchronization with local synchronization yields algorithms with reduced
> complexity."
> http://csdocs.cs.nyu.edu/Dienst/UI/2.0/Describe/ncstrl.nyu_cs%2FTR1991-539
> 
> Kolmogorov complexity is another.  "the length of the shortest effective
> description of an individual object" aka, compressability
> http://www.cwi.nl/~paulv/kolmogorov.html
> 
> Psychological complexity "psychological complexity measure developed at
> Clemson University, called the Permitted Interactions (PI) measure, uses
> design information to calculate the psychological complexity as a measure of
> effort. However there is a general demand for measures that can use
> information present at earlier phases. Following this requirement the
> measure reported here estimates complexity at the domain analysis phase
> which is the earliest development phase in an objectoriented software
> process. Psychological complexity relates to the cognitive load imposed on
> the developers of the software system which is in turn directly related to
> the time to completion of the development process."
> http://citeseer.nj.nec.com/167340.html
> 
> Structural measures of disorder using graphs (connectance ratio)
> http://crl.nmsu.edu/users/madavis/Site/Present/tsld001.htm
> 
> and so on.
> 
> len
> 
> 
> -----Original Message-----
> From: Eric van der Vlist [mailto:vdv@d...]
> 
> How do you measure the complexity of a specification?
> 
> Eric (just being curious)
> 
> 
> 



-- 
Rendez-vous à Paris pour une visite guidee de la nebuleuse XML.
                                           http://dyomedea.com/formation/
------------------------------------------------------------------------
Eric van der Vlist       http://xmlfr.org            http://dyomedea.com
http://xsltunit.org      http://4xt.org           http://examplotron.org
------------------------------------------------------------------------

• References:
  • RE: Adam Bosworth on XML and W3C
    • From: "Bullard, Claude L (Len)" <clbullar@i...>

• Prev by Date: RE: Adam Bosworth on XML and W3C
• Next by Date: RE: Adam Bosworth on XML and W3C
• Previous by thread: RE: Adam Bosworth on XML and W3C
• Next by thread: RE: Adam Bosworth on XML and W3C
• Index(es):
  • Date
  • Thread