From 653bee4b89131a997043a074d51c28dedb907f5c Mon Sep 17 00:00:00 2001
From: Joe Zhao <ztuowen@gmail.com>
Date: Mon, 18 May 2015 16:17:01 +0800
Subject: output update

---
 model/ranksvmtn.cpp | 29 +++++++++++++++++++----------
 1 file changed, 19 insertions(+), 10 deletions(-)

(limited to 'model/ranksvmtn.cpp')

diff --git a/model/ranksvmtn.cpp b/model/ranksvmtn.cpp
index 01d9851..0e41861 100644
--- a/model/ranksvmtn.cpp
+++ b/model/ranksvmtn.cpp
@@ -6,13 +6,13 @@
 using namespace std;
 using namespace Eigen;
 
-const double C=1e-4; // Compensating & scaling
 // Main terminating criteria
-const int maxiter = 20; // max iteration count
+const int maxiter = 40; // max iteration count
 const double prec=1e-10; // precision
 // conjugate gradient
 const double cg_prec=1e-10; // precision
-const int cg_maxiter = 30;
+const int cg_maxiter = 5; // not worth having a large number
+const int ls_maxiter = 10;
 // line search
 const double line_prec=1e-10; // precision
 const double line_turb=1e-15; // purturbation
@@ -54,11 +54,13 @@ int cg_solve(const MatrixXd &D,const vector<int> &rank,const VectorXd &corr,cons
     {
         // Non preconditioned version
         r_1 = res.dot(res);
+        if (iter)
+            LOG(INFO) << "CG iter "<<iter<<", r:"<<r_1;
         if (r_1<cg_prec) // Terminate condition
             break;
-        if (iter > cg_maxiter)
+        if (iter >= cg_maxiter)
         {
-            LOG(INFO) << "CG forced termination by maxiter, r:"<<r_1;
+            LOG(INFO) << "CG forced termination by maxiter";
             break;
         }
         if (iter){
@@ -162,10 +164,11 @@ int line_search(const VectorXd &w,const MatrixXd &D,const VectorXd &corr,const v
         g=g+line_turb;
         h = h+line_turb;
         t=t-g/h;
+        ++iter;
+        LOG(INFO) << "line search iter "<<iter<<", prec:"<<g*g/h;
         if (g*g/h<line_prec)
             break;
-        ++iter;
-        if (iter > cg_maxiter)
+        if (iter >= ls_maxiter)
         {
             LOG(INFO) << "line search forced termination by maxiter, prec:"<<g*g/h;
             break;
@@ -189,7 +192,6 @@ int train_orig(int fsize, MatrixXd &D,const vector<int> &A1,const vector<int> &A
     VectorXd alpha,beta;
     while (true)
     {
-        iter+=1;
         if (iter> maxiter)
         {
             LOG(INFO)<< "Maxiter reached";
@@ -208,8 +210,15 @@ int train_orig(int fsize, MatrixXd &D,const vector<int> &A1,const vector<int> &A
         line_search(weight,D,corr,A1,A2,step,t);
         weight=weight+step*t;
         // When dec is small enough
-        LOG(INFO)<<"Iter: "<<iter<<" Obj: " <<obj << " Newton decr:"<<step.dot(grad)/2 << " linesearch: "<< -t ;
-        if (step.dot(grad) < prec * obj)
+        double nprec = step.dot(grad)/obj;
+        ++iter;
+        LOG(INFO)<<"Iter: "<<iter<<" Obj: " <<obj << " Ndec/Obj:"<<nprec << " linesearch: "<< -t ;
+        if (iter> maxiter)
+        {
+            LOG(INFO)<< "Maxiter reached";
+            break;
+        }
+        if (nprec < prec)
             break;
     }
     return 0;
-- 
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