Differences

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--- admb_real:admb_real [2010/05/05 10:22] – lennartfr
+++ admb_real:admb_real [2010/09/09 08:39] (current) – lennartfr
@@ Line 444: / Line 444: @@
  </file>|
-For 2, 4, and 5 cohorts, the trajectories don not change much, and are consistent with the case of three cohorts.
+For 2, 4, and 5 cohorts, the trajectories do not change much, and are consistent with the case of three cohorts.
 cohorts: ({{:admb_real:cod_1985_2cohorts_dat.txt|.dat-file}})
@@ Line 546: / Line 546: @@
 ===== Model with two separate catchabilities =====
-| (image) | <file txt cod.cor> The logarithm of the determinant of the hessian = 50.7902
+This model has two q variables for each survey, one which is applied to age groups 0-2, and one which is applied to age group 3 and up. It is implemented in {{:admb_real:cod_two_q_rename_to_cod_tpl.txt|this .tpl file.}} A .pin file for three cohorts may read:
+<file txt cod.pin>
+# N0
+.07 2.95 2.9
+# q02
+.20
+# q3plus
+.2
+# log(s)
+.1
+# M
+.1
+</file>
+We run it on the usual data set, and get:
+|{{:admb_real:two_q_model_85_87.png?200|}}| <file txt cod.cor> The logarithm of the determinant of the hessian = 50.7902
  index   name     value      std dev       1       2       3       4       5       6       7
    N0      2.0581e-01 8.4094e-02   1.0000
@@ Line 556: / Line 573: @@
    M       2.0589e-06 1.4559e-03   0.0336  0.0514  0.0403 -0.0223 -0.0140  0.0004  1.0000
 </file> |
+As one can see the catchability for the classes age 3 and up is larger than for 0-2 year olds, which is consistent with our expectations.
 ===== Model with two separate catchabilities and two mortalities =====
+This model is a combination of the models with two Ms and two qs. The .tpl file can be found {{:admb_real:cod_two_q_two_m_rename_to_cod_tpl.txt|here.}} A .pin file should look like
+<file txt cod.pin>
+# N0
+.07 2.95 2.9
+# q02
+.20
+# q3plus
+.2
+# log(s)
+.1
+# M
+.1
+# Mvec
+</file>
+We run it on the standard dataset and get:
+| {{:admb_real:two_q_two_m_model_85_87.png?200|}} | <file txt cod.cor> The logarithm of the determinant of the hessian = 82.4993
+ index   name     value      std dev       1       2       3       4       5       6       7
+   N0      5.9029e-01 2.4390e-01   1.0000
+   N0      2.4613e-01 8.6909e-02   0.6200  1.0000
+   N0      2.0132e-01 7.4850e-02   0.5779  0.5697  1.0000
+   q02     5.0000e-02 7.1973e-09  -0.0000 -0.0000 -0.0000  1.0000
+   q3plus  9.9498e-02 4.1441e-02  -0.7242 -0.6946 -0.7115  0.0000  1.0000
+   logs   -1.7842e-01 1.4154e-01   0.0122  0.0161  0.0102  0.0000 -0.0092  1.0000
+   M       1.2339e-08 5.4534e-05   0.0000  0.0000  0.0000 -0.0000  0.0000  0.0000  1.0000
+   Mvec    3.7216e-01 1.7757e-01  -0.2653 -0.3269 -0.1560  0.0000 -0.0631 -0.0195  0.0000  1.0000
+</file>|
+Note that the catchability for 0-2 year olds, q02, is at its lower bound of 0.05, whereas the catchability q3plus is not.