构造前缀后缀序列的序列模仿挖掘算法

构造前缀后缀序列的序列模仿挖掘算法

Author: linyiqun

SequentialPatterns/DataMining_PrefixSpan/Client.java

@@ -0,0 +1,18 @@
+package DataMining_PrefixSpan;
+
+/**
+ * PrefixSpan序列模式挖掘算法
+ * @author lyq
+ *
+ */
+public class Client {
+	public static void main(String[] agrs){
+		String filePath = "C:\\Users\\lyq\\Desktop\\icon\\input.txt";
+		//最小支持度阈值率
+		double minSupportRate = 0.4;
+		
+		PrefixSpanTool tool = new PrefixSpanTool(filePath, minSupportRate);
+		tool.prefixSpanCalculate();
+	}
+}
+

SequentialPatterns/DataMining_PrefixSpan/ItemSet.java

@@ -0,0 +1,51 @@
+package DataMining_PrefixSpan;
+
+import java.util.ArrayList;
+
+/**
+ * 字符项集类
+ * 
+ * @author lyq
+ * 
+ */
+public class ItemSet {
+	// 项集内的字符
+	private ArrayList<String> items;
+
+	public ItemSet(String[] str) {
+		items = new ArrayList<>();
+		for (String s : str) {
+			items.add(s);
+		}
+	}
+
+	public ItemSet(ArrayList<String> itemsList) {
+		this.items = itemsList;
+	}
+
+	public ItemSet(String s) {
+		items = new ArrayList<>();
+		for (int i = 0; i < s.length(); i++) {
+			items.add(s.charAt(i) + "");
+		}
+	}
+
+	public ArrayList<String> getItems() {
+		return items;
+	}
+
+	public void setItems(ArrayList<String> items) {
+		this.items = items;
+	}
+
+	/**
+	 * 获取项集最后1个元素
+	 * 
+	 * @return
+	 */
+	public String getLastValue() {
+		int size = this.items.size();
+
+		return this.items.get(size - 1);
+	}
+}