notebooks/cplx/digest.md

-# fit_sequence_v1
+# fit_sequence version 1
 
-> `fit_sequence_v1`
+> `v1.fit_sequence`
 
 Version 1 smart fitter in IIRrational library. Uses SVD method with high order over fitting, then switches to nonlinear fits with heuristics to remove poles and zeros down to a reasonable system order.
 
@@ -34,18 +34,18 @@ Performs the SVD for a rough initial guess
 
 ![Fitttt](plot-1-3.png)
 
-### `1.4` choose poles
+### `1.4` choose direct
 
 > `if`
 
-Chose the Poles SVD fitter as it had the smaller residual of 1.84e+02 vs. 2.06e+04 for the zeros
+Chose the direct (non-SVD) fitter as it had the smallest residual of 4.22e+02
 
 
 ### `1.5` seq_iter_1
 
 > `IIRrational.fit_poles, IIRrational.fit_zeros`
 
-First iterations, enforcing mindelay and stabilized poles residual of 8.41e+03
+First iterations, enforcing mindelay and stabilized poles residual of 4.05e+02
 
 
 ![Fitttt](plot-1-5.png)
@@ -54,7 +54,7 @@ First iterations, enforcing mindelay and stabilized poles residual of 8.41e+03
 
 > `IIRrational.fit_poles, IIRrational.fit_zeros`
 
-First iterations, enforcing stabilized poles residual of 9.17e+02
+First iterations, enforcing stabilized poles residual of 3.93e+02
 
 
 ![Fitttt](plot-1-6.png)
@@ -63,7 +63,7 @@ First iterations, enforcing stabilized poles residual of 9.17e+02
 
 > `IIRrational.fit_poles, IIRrational.fit_zeros`
 
-First iterations, enforcing stabilized poles residual of 2.46e+02
+First iterations, enforcing stabilized poles residual of 3.87e+02
 
 
 ![Fitttt](plot-1-7.png)
@@ -72,7 +72,7 @@ First iterations, enforcing stabilized poles residual of 2.46e+02
 
 > `IIRrational.fit_poles, IIRrational.fit_zeros`
 
-First iterations, enforcing stabilized poles residual of 1.68e+02
+First iterations, enforcing stabilized poles residual of 3.82e+02
 
 
 ![Fitttt](plot-1-8.png)
@@ -112,16 +112,16 @@ ID Pairs for order reduction
 
 ![Fitttt](plot-3-1.png)
 
-### `3.2` seq_order_reduce_opt_1
+### `3.2` duals_ID_2
 
 > `MultiReprFilter.optimize`
 
-Optimize again after order reduction
+ID Pairs for order reduction
 
 
 ![Fitttt](plot-3-2.png)
 
-### `3.3` duals_ID_2
+### `3.3` duals_ID_3
 
 > `MultiReprFilter.optimize`
 
@@ -130,6 +130,24 @@ ID Pairs for order reduction
 
 ![Fitttt](plot-3-3.png)
 
+### `3.4` duals_ID_4
+
+> `MultiReprFilter.optimize`
+
+ID Pairs for order reduction
+
+
+![Fitttt](plot-3-4.png)
+
+### `3.5` duals_ID_5
+
+> `MultiReprFilter.optimize`
+
+ID Pairs for order reduction
+
+
+![Fitttt](plot-3-5.png)
+
 ## `4` flip mindelay
 
 ## `5` order_reduce 2
@@ -143,3 +161,21 @@ ID Pairs for order reduction
 
 ![Fitttt](plot-5-1.png)
 
+### `5.2` duals_ID_2
+
+> `MultiReprFilter.optimize`
+
+ID Pairs for order reduction
+
+
+![Fitttt](plot-5-2.png)
+
+### `5.3` duals_ID_3
+
+> `MultiReprFilter.optimize`
+
+ID Pairs for order reduction
+
+
+![Fitttt](plot-5-3.png)
+