diff --git a/src/main/java/org/dromara/easyai/recommend/CodeBack.java b/src/main/java/org/dromara/easyai/recommend/CodeBack.java
new file mode 100644
index 0000000..374b2af
--- /dev/null
+++ b/src/main/java/org/dromara/easyai/recommend/CodeBack.java
@@ -0,0 +1,51 @@
+package org.dromara.easyai.recommend;
+
+import org.dromara.easyai.entity.ThreeChannelMatrix;
+import org.dromara.easyai.matrixTools.Matrix;
+import org.dromara.easyai.i.OutBack;
+
+import java.util.List;
+
+public class CodeBack implements OutBack {
+    private float[] myFeature;
+
+    public float[] getMyFeature() {
+        return myFeature;
+    }
+
+    public void setMyFeature(float[] myFeature) {
+        this.myFeature = myFeature;
+    }
+
+    @Override
+    public void getBack(float out, int id, long eventId) {
+        myFeature[id - 1] = out;
+    }
+
+    @Override
+    public void getSoftMaxBack(long eventId, List<Float> softMax) {
+
+    }
+
+
+    @Override
+    public void backWord(String word, long eventId) {
+
+    }
+
+
+    @Override
+    public void getBackMatrix(Matrix matrix, int id, long eventId) {
+
+    }
+
+    @Override
+    public void getWordVector(int id, float w) {
+
+    }
+
+    @Override
+    public void getBackThreeChannelMatrix(ThreeChannelMatrix picture) {
+
+    }
+}