diff --git a/src/main/java/org/wlld/randomForest/RandomForest.java b/src/main/java/org/wlld/randomForest/RandomForest.java
index 28e9257..59319f6 100644
--- a/src/main/java/org/wlld/randomForest/RandomForest.java
+++ b/src/main/java/org/wlld/randomForest/RandomForest.java
@@ -12,6 +12,11 @@ import java.util.*;
 public class RandomForest {
     private Random random = new Random();
     private Tree[] forest;
+    private double trustTh = 0.1;//信任阈值
+
+    public void setTrustTh(double trustTh) {//设置信任阈值
+        this.trustTh = trustTh;
+    }
 
     public RandomForest(int treeNub) throws Exception {
         if (treeNub > 0) {
@@ -67,6 +72,9 @@ public class RandomForest {
                 nub = myNub;
             }
         }
+        if (nub < ArithUtil.mul(forest.length, trustTh)) {
+            type = 0;
+        }
         return type;
     }
 
@@ -75,7 +83,7 @@ public class RandomForest {
         if (dataTable.getSize() > 4) {
             int kNub = (int) ArithUtil.div(Math.log(dataTable.getSize()), Math.log(2));
             //int kNub = dataTable.getSize() - 1;
-           // System.out.println("knNub==" + kNub);
+            // System.out.println("knNub==" + kNub);
             for (int i = 0; i < forest.length; i++) {
                 Tree tree = new Tree(getRandomData(dataTable, kNub));
                 forest[i] = tree;