R help - Jan 2006 - Regression with no-intercept

Dear R users,
 
 There is a method called "style analysis" where you make a regression
being Y=fund yield and X=benchmarks yield, where we have the restrictions to
calculatethe linear regression:
 
 1. The regression must don have the intercept term.
  2. The coefficient sum must be one.
  3. All coefficients must be upper than zero.
 
 These restrictions are necessary to give to regression the sense of percentual 
benchmarks contributtions.
  
 Of course the least square method can't do that. So I used the Quadratic
Programation method.
  
 The question is:  How I don't use the least square method, how can I
evaluate (without graphics) the good/bad fit?
 
 Another: How can I interpret the exit of the intercept term in the regression?
 
 Thanks
  
  Alexandra
 



  Alexandra R. Mendes de Almeida

                                                 


		
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