From 3ff88375a5a8dcae05fb7b92f31fff804e38c078 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Mon, 06 Jun 2016 20:28:18 +0000
Subject: [PATCH] tactic script

---
 src/detection_layer.c |   34 +++++++++++++++++++++++++++++++++-
 1 files changed, 33 insertions(+), 1 deletions(-)

diff --git a/src/detection_layer.c b/src/detection_layer.c
index ca32bc0..1adda06 100644
--- a/src/detection_layer.c
+++ b/src/detection_layer.c
@@ -50,7 +50,7 @@
             int index = b*l.inputs;
             for (i = 0; i < locations; ++i) {
                 int offset = i*l.classes;
-                softmax_array(l.output + index + offset, l.classes,
+                softmax_array(l.output + index + offset, l.classes, 1,
                         l.output + index + offset);
             }
             int offset = locations*l.classes;
@@ -175,6 +175,38 @@
                         LOGISTIC, l.delta + index + locations*l.classes);
             }
         }
+
+        if(1){
+            float *costs = calloc(l.batch*locations*l.n, sizeof(float));
+            for (b = 0; b < l.batch; ++b) {
+                int index = b*l.inputs;
+                for (i = 0; i < locations; ++i) {
+                    int truth_index = (b*locations + i)*(1+l.coords+l.classes);
+                    for (j = 0; j < l.n; ++j) {
+                        int p_index = index + locations*l.classes + i*l.n + j;
+                        costs[b*locations*l.n + i*l.n + j] = l.delta[p_index]*l.delta[p_index];
+                    }
+                }
+            }
+            int indexes[100];
+            top_k(costs, l.batch*locations*l.n, 100, indexes);
+            float cutoff = costs[indexes[99]];
+            for (b = 0; b < l.batch; ++b) {
+                int index = b*l.inputs;
+                for (i = 0; i < locations; ++i) {
+                    int truth_index = (b*locations + i)*(1+l.coords+l.classes);
+                    for (j = 0; j < l.n; ++j) {
+                        int p_index = index + locations*l.classes + i*l.n + j;
+                        if (l.delta[p_index]*l.delta[p_index] < cutoff) l.delta[p_index] = 0;
+                    }
+                }
+            }
+            free(costs);
+        }
+
+
+
+
         printf("Detection 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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