From b15766bef024f086c51e56aa9af17783d3c1ff68 Mon Sep 17 00:00:00 2001
From: Joe Zhao <ztuowen@gmail.com>
Date: Wed, 20 May 2015 16:59:50 +0800
Subject: speedup, internalize libop

---
 tools/dataProvider.h | 73 ++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 56 insertions(+), 17 deletions(-)

(limited to 'tools/dataProvider.h')

diff --git a/tools/dataProvider.h b/tools/dataProvider.h
index 348d15c..4dc9c41 100644
--- a/tools/dataProvider.h
+++ b/tools/dataProvider.h
@@ -4,6 +4,7 @@
 #include<Eigen/Dense>
 #include "../tools/easylogging++.h"
 #include<vector>
+#include<math.h>
 
 // TODO decide how to construct training data
 // One possible way for training data:
@@ -93,8 +94,8 @@ public:
     }
     inline std::string getQid(int x)
     {
-        int a,b,n=getqSize();
-        a=x/n;
+        int a,b,q=getqSize();
+        a=x/q;
         return getU(a)->qid;
     }
     inline int getqSize()
@@ -112,25 +113,63 @@ public:
         return getuSize()*getqSize();
     }
     inline Eigen::VectorXd getVec(int x){
-        int a,b,n=getqSize();
-        a=x/n;
-        b=x%n;
-        Eigen::VectorXd vec;
+        int a,b,q=getqSize();
+        a=x/q;
+        b=x%q;
+        Eigen::VectorXd *id,*oth;
+        id = &(uniq[a]->feature);
         if (single)
-            return (uniq[a]->feature-other[b]->feature).cwiseAbs();
-        if (b<a)
-            vec=uniq[a]->feature-uniq[b]->feature;
+            oth = &(other[b]->feature);
+        else if (b<a)
+            oth = &(uniq[b]->feature);
+        else if (b<uniq.size()-1)
+            oth = &(uniq[b+1]->feature);
         else
-        if (b<uniq.size()-1)
-            vec=uniq[a]->feature-uniq[b+1]->feature;
-        else
-            vec=uniq[a]->feature-other[b-uniq.size()+1]->feature;
-        return vec.cwiseAbs();
+            oth = &(other[b-uniq.size()+1]->feature);
+        return (*id-*oth).cwiseAbs();
     };
+    inline double getVecDot(int x,const Eigen::VectorXd &w)
+    {
+        int a,b,q=getqSize();
+        a=x/q;
+        b=x%q;
+        double res = 0;
+        Eigen::VectorXd *id,*oth;
+        id = &(uniq[a]->feature);
+        if (single)
+            oth = &(other[b]->feature);
+        else if (b<a)
+            oth = &(uniq[b]->feature);
+        else if (b<uniq.size()-1)
+            oth = &(uniq[b+1]->feature);
+        else
+            oth = &(other[b-uniq.size()+1]->feature);
+        for (int i=0;i<n;++i)
+            res += fabs((*id)[i] - (*oth)[i])*w[i];
+        return res;
+    }
+    inline void addVecw(int x,double w,Eigen::VectorXd &X)
+    {
+        int a,b,q=getqSize();
+        a=x/q;
+        b=x%q;
+        Eigen::VectorXd *id,*oth;
+        id = &(uniq[a]->feature);
+        if (single)
+            oth = &(other[b]->feature);
+        else if (b<a)
+            oth = &(uniq[b]->feature);
+        else if (b<uniq.size()-1)
+            oth = &(uniq[b+1]->feature);
+        else
+            oth = &(other[b-uniq.size()+1]->feature);
+        for (int i=0;i<n;++i)
+            X[i] += fabs((*id)[i] - (*oth)[i])*w;
+    }
     inline double getL(int x){
-        int a,b,n=getqSize();
-        a=x/n;
-        b=x%n;
+        int a,b,q=getqSize();
+        a=x/q;
+        b=x%q;
         if (single)
         {
             if (std::fabs(other[b]->rank - a) < 1e-5)
-- 
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