diff --git a/face-search-core/src/main/java/com/visual/face/search/core/utils/SigmoidUtil.java b/face-search-core/src/main/java/com/visual/face/search/core/utils/SigmoidUtil.java
new file mode 100644
index 0000000..5956f15
--- /dev/null
+++ b/face-search-core/src/main/java/com/visual/face/search/core/utils/SigmoidUtil.java
@@ -0,0 +1,39 @@
+package com.visual.face.search.core.utils;
+
+import java.util.function.DoubleUnaryOperator;
+
+
+/**
+ * SigmoidUtil
+ */
+public class SigmoidUtil {
+
+    private static final DoubleUnaryOperator sigmoid = p ->1/(1+ Math.exp(-1 * p));
+
+    /**
+     * sigmoid
+     * @param tensor
+     * @return
+     */
+    public static double[] sigmoid(double[] tensor){
+        double[] result = new double[tensor.length];
+        for (int i = 0; i < result.length; i++){
+            result[i] = sigmoid.applyAsDouble(tensor[i]);
+        }
+        return result;
+    }
+
+    /**
+     * sigmoid
+     * @param tensor
+     * @return
+     */
+    public static double[][] sigmoid(double[][] tensor){
+        double[][] result = new double[tensor.length][];
+        for (int i = 0; i < result.length; i++){
+            result[i] = sigmoid(tensor[i]);
+        }
+        return result;
+    }
+
+}
diff --git a/face-search-core/src/main/java/com/visual/face/search/core/utils/SoftMaxUtil.java b/face-search-core/src/main/java/com/visual/face/search/core/utils/SoftMaxUtil.java
new file mode 100644
index 0000000..ec3b336
--- /dev/null
+++ b/face-search-core/src/main/java/com/visual/face/search/core/utils/SoftMaxUtil.java
@@ -0,0 +1,40 @@
+package com.visual.face.search.core.utils;
+
+import java.util.Arrays;
+import java.util.NoSuchElementException;
+
+/**
+ * SoftMaxUtil
+ */
+public class SoftMaxUtil {
+
+    /**
+     * softMax
+     * @param tensor
+     * @return
+     */
+    public static double[] softMax(double[] tensor){
+        if(Arrays.stream(tensor).max().isPresent()){
+            double maxValue = Arrays.stream(tensor).max().getAsDouble();
+            double[] value = Arrays.stream(tensor).map(y-> Math.exp(y - maxValue)).toArray();
+            double total = Arrays.stream(value).sum();
+            return Arrays.stream(value).map(p -> p/total).toArray();
+        }else{
+            throw new NoSuchElementException("No value present");
+        }
+    }
+
+    /**
+     * softMax
+     * @param tensor
+     * @return
+     */
+    public double[][] softMax(double[][] tensor){
+        double[][] result = new double[tensor.length][];
+        for (int i = 0; i < result.length; i++){
+            result[i] = softMax(tensor[i]);
+        }
+        return result;
+    }
+
+}
diff --git a/face-search-util/libs/milvus-java-sdk-2.0.0.jar b/face-search-engine/libs/milvus-java-sdk-2.0.0.jar
similarity index 100%
rename from face-search-util/libs/milvus-java-sdk-2.0.0.jar
rename to face-search-engine/libs/milvus-java-sdk-2.0.0.jar
diff --git a/face-search-util/libs/proxima-be-java-sdk-0.2.0.jar b/face-search-engine/libs/proxima-be-java-sdk-0.2.0.jar
similarity index 100%
rename from face-search-util/libs/proxima-be-java-sdk-0.2.0.jar
rename to face-search-engine/libs/proxima-be-java-sdk-0.2.0.jar
diff --git a/face-search-util/pom.xml b/face-search-engine/pom.xml
similarity index 98%
rename from face-search-util/pom.xml
rename to face-search-engine/pom.xml
index 386b1d6..35bacf6 100644
--- a/face-search-util/pom.xml
+++ b/face-search-engine/pom.xml
@@ -8,7 +8,7 @@
         <version>1.0.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
-    <artifactId>face-search-util</artifactId>
+    <artifactId>face-search-engine</artifactId>
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
diff --git a/face-search-server/pom.xml b/face-search-server/pom.xml
index 9688016..30afd0b 100644
--- a/face-search-server/pom.xml
+++ b/face-search-server/pom.xml
@@ -24,7 +24,7 @@
 
         <dependency>
             <groupId>com.visual.face.search</groupId>
-            <artifactId>face-search-util</artifactId>
+            <artifactId>face-search-engine</artifactId>
         </dependency>
 
         <dependency>
@@ -90,6 +90,9 @@
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <includeSystemScope>true</includeSystemScope>
+                </configuration>
             </plugin>
         </plugins>
     </build>
diff --git a/pom.xml b/pom.xml
index 602ef28..b803de2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,7 +18,7 @@
         <module>face-search-core</module>
         <module>face-search-server</module>
         <module>face-search-client</module>
-        <module>face-search-util</module>
+        <module>face-search-engine</module>
         <module>face-search-test</module>
     </modules>
 
@@ -55,7 +55,7 @@
 
             <dependency>
                 <groupId>com.visual.face.search</groupId>
-                <artifactId>face-search-util</artifactId>
+                <artifactId>face-search-engine</artifactId>
                 <version>${project.version}</version>
             </dependency>