내 데이터에 Aprioiri 알고리즘을 구현 중입니다. 데이터는 약 81 개의 속성을 가진 거의 700 개의 레코드를 가지고 있습니다. 해당 데이터에 대한 연결 규칙을 생성하려고합니다. 이 내 프로그램의 코드입니다weka.apriori의 자바 힙 공간 오류
public class Aprioritest {
/**
* @param args the command line arguments
*/
public static void main(String[] args) throws Exception {
String dataset = "C:/Users/pc-4/Desktop/CasebaseWithDiseasenamesCSV_1.arff";
DataSource source = new DataSource(dataset);
Instances newData = source.getDataSet();
NumericToNominal filter = new NumericToNominal();
filter.setInputFormat(newData);
newData = Filter.useFilter(newData, filter);
for(int i=0; i<5; i=i+1)
{
System.out.println("Nominal? "+newData .attribute(i).isNominal());
}
Apriori model = new Apriori();
model.buildAssociations(newData);
System.out.println(model);
}
}
그러나 15 분 동안 실행 한 후 다음과 같은 오류가 있습니다 :
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Arrays.java:3181)
at java.util.ArrayList.grow(ArrayList.java:261)
at java.util.ArrayList.ensureExplicitCapacity(ArrayList.java:235)
at java.util.ArrayList.ensureCapacityInternal(ArrayList.java:227)
at java.util.ArrayList.add(ArrayList.java:458)
at weka.associations.AprioriItemSet.mergeAllItemSets(AprioriItemSet.java:587)
at weka.associations.Apriori.findLargeItemSets(Apriori.java:1677)
at weka.associations.Apriori.buildAssociations(Apriori.java:518)
at aprioritest.Aprioritest.main(Aprioritest.java:43)
C:\Users\pc-4\AppData\Local\NetBeans\Cache\8.2\executor-snippets\run.xml:53:
Java returned: 1
BUILD FAILED (total time: 15 minutes 27 seconds)
데이터는 .arff 형식이며, 각 속성이 1 또는 0 마지막 속성 만 결과 클래스를 나타냅니다. 다음은 데이터의 5 가지 예입니다.
0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,A 0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,A 0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,A 0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,A 0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,A
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