Re: cdt glossary [Function] (was: Terminology question)

Cimode ha scritto:

> You spoke about measuring a function...How do you measure a function?
> According to what scale?

You have not read the pointers I provided otherwise you would know what a measurable function is:

http://en.wikipedia.org/wiki/Measurable_function

Have you have heard about the Measure theory?

http://mathworld.wolfram.com/MeasureTheory.html

Do you know what a Riemann-Stiltjes integral is or are you still confined to Riemann definition? Ask in sci.math in case.

http://en.wikipedia.org/wiki/Riemann_integral

>
> Subjectivity and limited scope context does NOT redefine mathematical
> concepts. It is actually the characteristics of mathematical empirical
> sound reasonning to be objective and context independent. If you try
> to define such concepts according to context then you are setting
> limited scope reasonning which in most cases can be applied in one and
> only one concept.

I agree with the above. I am not talking of "define such concepts according to context ".
I am talking to make clear the scope of the definition.

>
> Reading the definition of random variable you provided, it seems clear
> to me that random variables have pretty much nothing to do with
> relations as they have been defined in the past 30 years.

A rv is a function. This is by definition. It's a lost war.

You would
> spend better your time educating yourself on the subject by reading
> some knowledgeable about the subject of relations instead of trying to
> redefine concepts that are sound and that regulate the field of data
> management more than ever . That way you would avoid getting bashed by
> people like BB or one of his barking dogs... Here are a few pointers
> that may help...

You are sounding offensive because you are suggestion I have not done so, which you evidently cannot know. This does not hurt me anyway because I do not need recognition by everybody I meet.

Also why are you addressing Bob as a barking dog? He may have his reason to behave like that. I do not blaim him for his continuous insults.
After all this is a relatively unarmful way to get rid of our own life frustations
(papers not published, awards not achieved, sentimental failure, not keeping
up with science and tech advances ...).

>
> http://www.dbdebunk.com/books.html
> Introduction to database systems

Please reference only free sources. I believe that for this kind of things
Internet, while it can contain errors, as textbooks do, is the most uptodate
source. Often (not always) people who write books do that to teach and make clear concept to themselves...

Take it easy: life is short :)

-P

>
>
> Hope this helps...
Received on Thu Sep 07 2006 - 12:43:45 CEST