From c40cdeb4021fc1a638969563972f13c9f5e90d74 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Fri, 09 Oct 2015 19:50:43 +0000
Subject: [PATCH] lots of comparator stuff

---
 src/region_layer.c |   86 +++++++++++++++++++++++++++++++++++++------
 1 files changed, 74 insertions(+), 12 deletions(-)

diff --git a/src/region_layer.c b/src/region_layer.c
index ecb89c6..3239f87 100644
--- a/src/region_layer.c
+++ b/src/region_layer.c
@@ -57,10 +57,33 @@
             activate_array(l.output + index + offset, locations*l.n*(1+l.coords), LOGISTIC);
         }
     }
+    if (l.object_logistic) {
+        for(b = 0; b < l.batch; ++b){
+            int index = b*l.inputs;
+            int p_index = index + locations*l.classes;
+            activate_array(l.output + p_index, locations*l.n, LOGISTIC);
+        }
+    }
+
+    if (l.coord_logistic) {
+        for(b = 0; b < l.batch; ++b){
+            int index = b*l.inputs;
+            int coord_index = index + locations*(l.classes + l.n);
+            activate_array(l.output + coord_index, locations*l.n*l.coords, LOGISTIC);
+        }
+    }
+
+    if (l.class_logistic) {
+        for(b = 0; b < l.batch; ++b){
+            int class_index = b*l.inputs;
+            activate_array(l.output + class_index, locations*l.classes, LOGISTIC);
+        }
+    }
 
     if(state.train){
         float avg_iou = 0;
         float avg_cat = 0;
+        float avg_allcat = 0;
         float avg_obj = 0;
         float avg_anyobj = 0;
         int count = 0;
@@ -81,15 +104,18 @@
 
                 int best_index = -1;
                 float best_iou = 0;
-                float best_rmse = 4;
+                float best_rmse = 20;
 
-                if (!is_obj) continue;
+                if (!is_obj){
+                    continue;
+                }
 
                 int class_index = index + i*l.classes;
                 for(j = 0; j < l.classes; ++j) {
                     l.delta[class_index+j] = l.class_scale * (state.truth[truth_index+1+j] - l.output[class_index+j]);
                     *(l.cost) += l.class_scale * pow(state.truth[truth_index+1+j] - l.output[class_index+j], 2);
                     if(state.truth[truth_index + 1 + j]) avg_cat += l.output[class_index+j];
+                    avg_allcat += l.output[class_index+j];
                 }
 
                 box truth = float_to_box(state.truth + truth_index + 1 + l.classes);
@@ -108,6 +134,7 @@
                     }
 
                     float iou  = box_iou(out, truth);
+                    //iou = 0;
                     float rmse = box_rmse(out, truth);
                     if(best_iou > 0 || iou > 0){
                         if(iou > best_iou){
@@ -121,18 +148,38 @@
                         }
                     }
                 }
-                int p_index = index + locations*l.classes + i*l.n + best_index;
-                *(l.cost) -= l.noobject_scale * pow(l.output[p_index], 2);
-                *(l.cost) += l.object_scale * pow(1-l.output[p_index], 2);
-                avg_obj += l.output[p_index];
-                l.delta[p_index+0] = l.object_scale * (1.-l.output[p_index]);
 
-                if(l.rescore){
-                    l.delta[p_index+0] = l.object_scale * (best_iou - l.output[p_index]);
+                if(l.forced){
+                    if(truth.w*truth.h < .1){
+                        best_index = 1;
+                    }else{
+                        best_index = 0;
+                    }
                 }
 
                 int box_index = index + locations*(l.classes + l.n) + (i*l.n + best_index) * l.coords;
                 int tbox_index = truth_index + 1 + l.classes;
+
+                box out = float_to_box(l.output + box_index);
+                out.x /= l.side;
+                out.y /= l.side;
+                if (l.sqrt) {
+                    out.w = out.w*out.w;
+                    out.h = out.h*out.h;
+                }
+                float iou  = box_iou(out, truth);
+
+                //printf("%d", best_index);
+                int p_index = index + locations*l.classes + i*l.n + best_index;
+                *(l.cost) -= l.noobject_scale * pow(l.output[p_index], 2);
+                *(l.cost) += l.object_scale * pow(1-l.output[p_index], 2);
+                avg_obj += l.output[p_index];
+                l.delta[p_index] = l.object_scale * (1.-l.output[p_index]);
+
+                if(l.rescore){
+                    l.delta[p_index] = l.object_scale * (iou - l.output[p_index]);
+                }
+
                 l.delta[box_index+0] = l.coord_scale*(state.truth[tbox_index + 0] - l.output[box_index + 0]);
                 l.delta[box_index+1] = l.coord_scale*(state.truth[tbox_index + 1] - l.output[box_index + 1]);
                 l.delta[box_index+2] = l.coord_scale*(state.truth[tbox_index + 2] - l.output[box_index + 2]);
@@ -142,16 +189,31 @@
                     l.delta[box_index+3] = l.coord_scale*(sqrt(state.truth[tbox_index + 3]) - l.output[box_index + 3]);
                 }
 
-                *(l.cost) += pow(1-best_iou, 2);
-                avg_iou += best_iou;
+                *(l.cost) += pow(1-iou, 2);
+                avg_iou += iou;
                 ++count;
             }
             if(l.softmax){
                 gradient_array(l.output + index + locations*l.classes, locations*l.n*(1+l.coords), 
                         LOGISTIC, l.delta + index + locations*l.classes);
             }
+            if (l.object_logistic) {
+                int p_index = index + locations*l.classes;
+                gradient_array(l.output + p_index, locations*l.n, LOGISTIC, l.delta + p_index);
+            }
+
+            if (l.class_logistic) {
+                int class_index = index;
+                gradient_array(l.output + class_index, locations*l.classes, LOGISTIC, l.delta + class_index);
+            }
+
+            if (l.coord_logistic) {
+                    int coord_index = index + locations*(l.classes + l.n);
+                gradient_array(l.output + coord_index, locations*l.n*l.coords, LOGISTIC, l.delta + coord_index);
+            }
+            //printf("\n");
         }
-        printf("Region Avg IOU: %f, Avg Cat Pred: %f, Avg Obj: %f, Avg Any: %f, count: %d\n", avg_iou/count, avg_cat/count, avg_obj/count, avg_anyobj/(l.batch*locations*l.n), count);
+        printf("Region Avg IOU: %f, Pos Cat: %f, All Cat: %f, Pos Obj: %f, Any Obj: %f, count: %d\n", avg_iou/count, avg_cat/count, avg_allcat/(count*l.classes), avg_obj/count, avg_anyobj/(l.batch*locations*l.n), count);
     }
 }
 

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