diff --git a/src/main/java/org/wlld/function/Sigmod.java b/src/main/java/org/wlld/function/Sigmoid.java
similarity index 73%
rename from src/main/java/org/wlld/function/Sigmod.java
rename to src/main/java/org/wlld/function/Sigmoid.java
index 4e28d5276fc291e65b14255b6cb40239136f8ae4..0128ad9a3743ad1a7fff21b880c276a7b15adc0d 100644
--- a/src/main/java/org/wlld/function/Sigmod.java
+++ b/src/main/java/org/wlld/function/Sigmoid.java
@@ -4,11 +4,12 @@ import org.wlld.i.ActiveFunction;
 import org.wlld.tools.ArithUtil;
 
 /**
- * @author lidapeng
- * @description sigmod函数
- * @date 8:54 上午 2020/1/11
+ * @param
+ * @DATA
+ * @Author LiDaPeng
+ * @Description
  */
-public class Sigmod implements ActiveFunction {
+public class Sigmoid implements ActiveFunction {
     @Override
     public double function(double x) {
         return ArithUtil.div(1, ArithUtil.add(1, Math.exp(-x)));
diff --git a/src/main/java/org/wlld/function/Tanh.java b/src/main/java/org/wlld/function/Tanh.java
index 776c3e7375f50fbd4a57fba31b013e4a5d26c249..bc653a9206fe5ffe9d40485728f0278b78d42c1c 100644
--- a/src/main/java/org/wlld/function/Tanh.java
+++ b/src/main/java/org/wlld/function/Tanh.java
@@ -15,6 +15,6 @@ public class Tanh implements ActiveFunction {
 
     @Override
     public double functionG(double out) {
-        return 1 - Math.pow(function(out), 2);//ArithUtil.sub(1, Math.pow(function(out), 2));
+        return 1 - Math.pow(out, 2);//ArithUtil.sub(1, Math.pow(function(out), 2));
     }
 }
diff --git a/src/main/java/org/wlld/imageRecognition/Convolution.java b/src/main/java/org/wlld/imageRecognition/Convolution.java
index 017c56ae8bda2d252b0f9a0c9f19ac793fc8659d..37c708f414dcbe3a6ba8fb55cadb53c3225df859 100644
--- a/src/main/java/org/wlld/imageRecognition/Convolution.java
+++ b/src/main/java/org/wlld/imageRecognition/Convolution.java
@@ -7,9 +7,7 @@ import org.wlld.imageRecognition.border.Border;
 import org.wlld.imageRecognition.border.Frame;
 import org.wlld.imageRecognition.border.FrameBody;
 import org.wlld.imageRecognition.border.GMClustering;
-import org.wlld.imageRecognition.segmentation.ColorFunction;
 import org.wlld.param.Food;
-import org.wlld.pso.PSO;
 import org.wlld.tools.ArithUtil;
 import org.wlld.tools.Frequency;
 
diff --git a/src/test/java/coverTest/PicTest.java b/src/test/java/coverTest/PicTest.java
index 3e5deedda6c42431a524671356d617db68204d90..a923970cedae979dee694b2a16a134d454eb99d8 100644
--- a/src/test/java/coverTest/PicTest.java
+++ b/src/test/java/coverTest/PicTest.java
@@ -5,11 +5,9 @@ import com.alibaba.fastjson.JSONObject;
 import org.wlld.Ma;
 import org.wlld.MatrixTools.Matrix;
 import org.wlld.MatrixTools.MatrixOperation;
-import org.wlld.ModelData;
 import org.wlld.config.Classifier;
 import org.wlld.config.RZ;
 import org.wlld.config.StudyPattern;
-import org.wlld.function.Sigmod;
 import org.wlld.function.Tanh;
 import org.wlld.i.OutBack;
 import org.wlld.imageRecognition.Operation;
diff --git a/src/test/java/org/wlld/NerveDemo1.java b/src/test/java/org/wlld/NerveDemo1.java
index 9b2752c320c5e08e12d603be60434c1d0005f2c1..abf95b52419a1284a3ead11b13bba0831ec3cedb 100644
--- a/src/test/java/org/wlld/NerveDemo1.java
+++ b/src/test/java/org/wlld/NerveDemo1.java
@@ -2,7 +2,6 @@ package org.wlld;
 
 import org.wlld.MatrixTools.Matrix;
 import org.wlld.config.RZ;
-import org.wlld.function.Sigmod;
 import org.wlld.function.Tanh;
 import org.wlld.i.OutBack;
 import org.wlld.nerveCenter.NerveManager;