diff --git a/src/main/java/com/tarzan/recommend/core/CoreMath.java b/src/main/java/com/tarzan/recommend/core/CoreMath.java
index 8a9fd1f..212375b 100644
--- a/src/main/java/com/tarzan/recommend/core/CoreMath.java
+++ b/src/main/java/com/tarzan/recommend/core/CoreMath.java
@@ -50,8 +50,8 @@ public class CoreMath {
      * @return double
      */
     private static double relateDist(List<RelateDTO> xList, List<RelateDTO> yList,int type) {
-        List<Integer> xs= Lists.newArrayList();
-        List<Integer> ys= Lists.newArrayList();
+        List<Double> xs= Lists.newArrayList();
+        List<Double> ys= Lists.newArrayList();
         xList.forEach(x->{
             yList.forEach(y->{
                 if(type==0){
@@ -79,7 +79,7 @@ public class CoreMath {
      * @author tarzan
      * @date 2020年07月31日 17:03:20
      */
-    public static double getRelate(List<Integer> xs, List<Integer> ys){
+    public static double getRelate(List<Double> xs, List<Double> ys){
         int n=xs.size();
         //至少有两个元素
         if (n<2) {
diff --git a/src/main/java/com/tarzan/recommend/dto/RelateDTO.java b/src/main/java/com/tarzan/recommend/dto/RelateDTO.java
index 7caeb1d..285c84d 100644
--- a/src/main/java/com/tarzan/recommend/dto/RelateDTO.java
+++ b/src/main/java/com/tarzan/recommend/dto/RelateDTO.java
@@ -21,7 +21,7 @@ public class RelateDTO {
     /** 物品id */
     private Integer itemId;
     /** 指数 */
-    private Integer index;
+    private Double index;
 
 
 }
diff --git a/src/main/java/com/tarzan/recommend/service/FileDataSource.java b/src/main/java/com/tarzan/recommend/service/FileDataSource.java
index 24f3827..a1df88d 100644
--- a/src/main/java/com/tarzan/recommend/service/FileDataSource.java
+++ b/src/main/java/com/tarzan/recommend/service/FileDataSource.java
@@ -21,6 +21,9 @@ public class FileDataSource {
 
 
       public  static String folderPath;
+      static {
+          folderPath= Objects.requireNonNull(FileDataSource.class.getResource("/ml-100k")).getPath();
+      }
 
 
     /**
@@ -31,7 +34,6 @@ public class FileDataSource {
      * @date 2020年07月31日 16:53:40
      */
     public static List<RelateDTO> getData() {
-        folderPath= Objects.requireNonNull(FileDataSource.class.getResource("/ml-100k")).getPath();
         List<RelateDTO> relateList = Lists.newArrayList();
         try {
             FileInputStream out = new FileInputStream(folderPath+"\\u.data");
@@ -43,7 +45,7 @@ public class FileDataSource {
                 String[] ht = newline.split(" ");
                 Integer userId = Integer.parseInt(ht[0]);
                 Integer movieId = Integer.parseInt(ht[1]);
-                Integer rating = Integer.parseInt(ht[2]);
+                Double rating = Double.parseDouble(ht[2]);
                 RelateDTO dto = new RelateDTO(userId, movieId, rating);
                 relateList.add(dto);
             }
@@ -61,7 +63,6 @@ public class FileDataSource {
      * @date 2020年07月31日 16:54:51
      */
     public static List<UserDTO> getUserData() {
-        folderPath= Objects.requireNonNull(FileDataSource.class.getResource("/ml-100k")).getPath();
         List<UserDTO> userList = Lists.newArrayList();
         try {
             FileInputStream out = new FileInputStream(folderPath+"\\u.user");
@@ -94,7 +95,6 @@ public class FileDataSource {
      * @date 2020年07月31日 16:54:22
      */
     public static List<ItemDTO> getItemData() {
-        folderPath= Objects.requireNonNull(FileDataSource.class.getResource("/ml-100k")).getPath();
         List<ItemDTO> itemList = Lists.newArrayList();
         try {
             FileInputStream out = new FileInputStream(folderPath+"\\u.item");