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| Peter Dembinski 2006-03-20, 6:58 pm |
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Does anyone reading this newsgroup have any experiences in estimating
the software project effort using use case points? If no -- what are
the most popular methods to estimate the sife of a software effort?
--
http://www.peter.dembinski.prv.pl
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| David Lightstone 2006-03-20, 6:58 pm |
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"Peter Dembinski" <pdemb@gazeta.pl> wrote in message
news:87mzfk3npk.fsf@hector.domek...
>
> Does anyone reading this newsgroup have any experiences in estimating
> the software project effort using use case points? If no -- what are
> the most popular methods to estimate the sife of a software effort?
>
> --
> http://www.peter.dembinski.prv.pl
There are 2 part of the question to consider.
Most optimistic estimate
Realistic estimate.
Various models exist for most optimistic estimate (function points based,
COCOMO based, etc)
For realistic estimates consider reading Waltzing with Bears
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| David Lightstone wrote:
> For realistic estimates consider reading Waltzing with Bears
One Josh Kerievsky (a leader in the Agile movement, and a strong proponent
of adaptive planning and incremental schedule refinement) loved that book.
--
Phlip
[url]http://www.greencheese.org/Z Land[/url] <-- NOT a blog!!!
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| David Lightstone 2006-03-20, 9:56 pm |
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"Phlip" <phlip2005@gmail.com> wrote in message
news:aFGTf.6240$Ao6.4625@newssvr31.news.prodigy.com...
> David Lightstone wrote:
>
>
> One Josh Kerievsky (a leader in the Agile movement, and a strong proponent
> of adaptive planning and incremental schedule refinement) loved that book.
Thats nice. Obviously he didn't understand the parts that refute adaptive
planning
>
> --
> Phlip
> [url]http://www.greencheese.org/ZLand[/url] <-- NOT a blog!!!
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| MtnTopRebel 2006-03-21, 10:03 pm |
| "Estimation with Use Cases: A Simple and Effective Approach to
Estimating Software Projects" by Jon Porter.
Amazon book link from here: http://porterlearning.com/index.html
The primary goal of this publication is to provide a simple method
of forming useful estimates of time and effort in the early phases of
object oriented software projects. The estimation methodology presented
here is based on Use Case Point Analysis, a derivative of Function
Point Analysis. This publication includes a point-by-point process on
how to perform estimation and requires no special knowledge beyond this
writing to implement. The author has been successfully using this
method for 8 years and has estimated over 200 projects. What is most
remarkable is that a useful project estimate can be made in about an
hour using
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| bill turner 2006-03-22, 8:04 am |
| On Mon, 20 Mar 2006 20:44:55 +0100, Peter Dembinski <pdemb@gazeta.pl>
wrote:
>
>Does anyone reading this newsgroup have any experiences in estimating
>the software project effort using use case points? If no -- what are
>the most popular methods to estimate the sife of a software effort?
I have not used Use Case Points, but was at a presentation at ICSPI
2002 wherein someone was talking of estimates using Use Cases. It
seemed like a good way to come up with an initial estimate very
quickly, and you can probably get a lot of input/feedback from the
requestor since the time frame is so short. Techniques that require
much longer time spans or are far more technical could easily diminish
the interest of the requestor.
If this is similar and/or the same thing as what I was introduced to,
then it must be known that this is a top-down technique (I cannot see
it being anything but, anyway). Combining it with a bottom-up
technique and you should be able to get pretty reasonable estimates.
That said, estimates cannot be considered very reliable if one does
not track the estimates and the actuals, who did the estimating, etc.
Just keeping a record of estimates and actuals should be helpful if
you can search for estimates with the same number of actors, whether
human or system, and especially within the same domain.
------------------------------------------
Bill Turner
A faith that the free play of market forces will eventually end in
Good is, in fact, more 'absurd' than religious belief, for there, at
least, there is a presumption of an intelligent Agent Who writes
straight with His crooked lines. - William Pfaff
Views expressed are entirely my own and only coincidentally represent
those of other persons or entities.
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| Peter Dembinski 2006-03-23, 10:02 pm |
| "MtnTopRebel" <acbcompute@sisna.com> writes:
> "Estimation with Use Cases: A Simple and Effective Approach to
> Estimating Software Projects" by Jon Porter.
Yes, that's why I asked.
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| Peter Dembinski 2006-03-23, 10:02 pm |
| "David Lightstone" <david._NoSpamlightstone@prodigy.net> writes:
[...]
> For realistic estimates consider reading Waltzing with Bears
Waltzing with Bears?
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| David Lightstone 2006-03-23, 10:02 pm |
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"Peter Dembinski" <pdemb@gazeta.pl> wrote in message
news:87y7z12elp.fsf@hector.domek...
> "David Lightstone" <david._NoSpamlightstone@prodigy.net> writes:
>
> [...]
>
>
> Waltzing with Bears?
Waltzing With Bears is a book written by Demarco and Lister. The subject
matter is risk management. The focus is software development.
Erroneous time estimate is the principle risk of all projects. You can not
get around that risk
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