Tuesday, August 26, 2008

HPA Model

1. http://www.cellml.org/models/gonzalezheydrich_steingard_kohane_1994_version02
2. http://www.cellml.org/models/gonzalezheydrich_steingard_kohane_1994_version02
Posted by at 05:56:33 | Permalink | No Comments »

Monday, August 25, 2008

Equal variance

1. http://en.wikipedia.org/wiki/Homoscedasticity
2. http://en.wikipedia.org/wiki/Bartlett%27s_test
Posted by at 07:25:34 | Permalink | No Comments »

Thursday, August 21, 2008

A good book

Principles of biostatistics / Marcello Pagano, Kimberlee Gauvreau.
Posted by at 06:36:15 | Permalink | No Comments »

Wednesday, August 20, 2008

Three possible curve fitting approach

1. curve fitting for individual woman and calculate the median trajectory, then curve fitting this median trajectory to confirm an equation
2. curve fitting for all existing data to choose an equation
3. curve fitting for individual woman (probably different woman has different equation), rank these equations in a “probability distributions” to find an equation with largest proportions of ranking.

We need to discuss some possible scenarios:
1. data is not well fitted

Discussion:
1. Curve fitting to find the best equation needs trade on “simplicity” and “goodness of fit”.
2. Needs to match the general trend of blood hormone
3. Needs to define some criteria, which we can’t predict this woman.

Posted by at 08:17:05 | Permalink | No Comments »

Monday, August 18, 2008

correlation coefficient in Matlab

1. corrcoef() to calculate the “correlation coefficient” in matlab
Posted by at 04:42:41 | Permalink | No Comments »

Thursday, August 14, 2008

homoscedasticity

1. homoscedasticity

   –characterized by variances which do not differ greatly between distributions

2. http://www.le.ac.uk/bl/gat/virtualfc/Stats/variance.html

Posted by at 05:58:23 | Permalink | No Comments »

Tuesday, August 5, 2008

Homoscedasicity

http://www.le.ac.uk/bl/gat/virtualfc/Stats/variance.html
Posted by at 02:47:49 | Permalink | No Comments »