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The Linda Problem http://en.wikipedia.org/wiki/Conjunction_fallacy
Note for my brain: need to read more into Prospect Theory
by rolandk (2008.07.25, 21:28)
The fallacy of a "technical"
Domain Model Today I came to the notion of a...
by rolandk (2008.07.22, 20:01)
the ToC looks interesting
indeed
by rolandk (2008.07.18, 16:50)
Junkfood harms! [...] he said
he has wife and seven kids to support [...]
http://www.youtube.com/watch?v=gPgpYux8HJQ
by rolandk (2008.07.18, 16:43)
That one looks quite interesting
as well:
http://www.labyrinthbooks.com/sale_detail.aspx?isbn=9780521388849
Via Cosma Shalizi; in case your...
by chris (2008.07.16, 21:51)
Wunder Crafts My collegue is
able to write emails a bayesian filter recognizes as Spam.
by rolandk (2008.07.16, 14:59)
Theories of Probability in the
20th Century, Part II Pre-WWI Cambridge was a highly influential...
by rolandk (2008.07.12, 12:53)
Erlang - the movie Geeky!
http://video.google.com/videoplay?docid=-5830318882717959520
by rolandk (2008.07.08, 12:50)
Theories of Probability in the
20th Century, Part I Half way on the road, I...
by rolandk (2008.07.04, 18:42)
Next book on my shelf
http://books.google.at/books?id=wFFK_P8Cpk0C
What struck me at first glance was the evidence...
by rolandk (2008.06.30, 12:54)
Roland Kofler's Blog on Software Engineering on |
Friday, 25. July 2008
The Linda Problem
2008.07.25, 21:28
... link (no comments) ... comment Tuesday, 22. July 2008
The fallacy of a "technical" Domain Model
2008.07.22, 20:01
Today I came to the notion of a "technical" Domain Model, by a smart colleague by the way. Domain Model being synonym to "Model of a Domain" inherently is pure business, although I conceal that certain properties - the way it was modeled - reflects technical constraints. I already was able to optimize the performance of a system by optimizing the Domain Model. But no Aggregate, no Entity, no Relationship in a Domain Model can be represent a technical term.
This is easily arguable for the core entities like Customer, but why should the Business Concept of a Searchquery not shaped by inquiring the analyst/business owner defining the business of the queries: do they have subqueries, would they be savable, do we have special operations on queries? The same goes for legacy boundaries. What means it interact with the legacy FROM BUSINESS point of view. If its important its business, not technical. That's what shapes the difference between an iPhone and a Smartphone. What else should I say? ... link (no comments) ... comment Friday, 18. July 2008
Junkfood harms!
2008.07.18, 16:43
[...] he said he has wife and seven kids to support [...]
www.youtube.com ... link (no comments) ... comment Wednesday, 16. July 2008
Wunder Crafts
2008.07.16, 14:59
My collegue is able to write emails a bayesian filter recognizes as Spam.
... link (no comments) ... comment Tuesday, 8. July 2008
Theories of Probability in the 20th Century, Part II
2008.07.08, 20:11
Pre-WWI Cambridge was a highly influential intellectual center in the first half 20th century with strong mathematical bias, due to people like Bertrand Russell, Ludwig Wittgenstein and John Maynard Keynes. The later, famous for his leftist economic theory compiled in the opus magnum 'The General Theory of Employment, Interest and Money'; did not only ground Roosevelts 'New Deal' or the European social market economy, but contributed with his 'Treatise on Probability' to modern probability what is now known as The logical Theory.
Keynes believes that that logical relations can be applied to probability events, so that fundamental problems of induction in probability (e.g. a black swan) can be solved. Probability is a degree of partially entailment of a hypothesis. From the observation of all swans, they were all white, follows partially and to a certain degree that all swans are white. Interestingly Keynes does not believe that the degree of entailment is always computable, on the contrary probabilities might not comparable at all: .
0 represents impossibility, 1 certainty, and A a numerically measurable probability intermediate between 0 and 1; U, V, W, X, Y, Z are non-numerical probabilities, of which, however, V is less than the numerical probability A, and is also less than W, X, and Y. X and Y are both greater than W, and greater than V, but are not comparable with one another, or with A. V and Z are both less than W, X, and Y, but are not comparable with one another; U is not quantitatively comparable with any of the probabilities V, W, X, Y, Z.Keynes 'A Treatise on Probability' 1921:39 ... link (2 comments) ... comment ... Next page
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