search for: artici

Displaying 2 results from an estimated 2 matches for "artici".

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2006 Jul 28
1
maximum likelihood
hi, using articial data, i'm supposed to estimate model y(t) = beta(1) + beta(2)*x(t) + u(t), u(t) = gamma*u(t-1) + v(t), t = 1,...,100 which is correctly specified in two ways: ML ommiting the first observation, and ML using all 100 observation. since i'm still learning how to use R, i would like to kno...
2007 Feb 01
6
Using a nonstandard foreign key
Hopefully this is an interesting question. I have a "user" table with a field "email_address". I would like the part of "email_address" after the ''@'' to be a foreign key to a "companies" table populated by a companies that are clients. Any pointers on how to do this in rails? --~--~---------~--~----~------------~-------~--~----~ You