我的应用程序需要通过 Apriori算法获取关联。为了获得结果,我使用 Weka 依赖。虽然我想获得关联,但它会打印内存位置。我也附加了输出。感谢。
这是我的代码:
public class App
{
static Logger log = Logger.getLogger(App.class.getName());
public static BufferedReader readDataFile(String filename) {
BufferedReader inputReader = null;
try {
inputReader = new BufferedReader(new FileReader(filename));
} catch (FileNotFoundException ex) {
}
return inputReader;
}
public static void main( String[] args ) throws Exception {
//Define ArrayList to Add Clustered Information
ArrayList<FastVector[]> associationInfoArrayList = new ArrayList<FastVector[]>();
Apriori apriori = new Apriori();
apriori.setNumRules(15);
BufferedReader datafile = readDataFile("/media/jingi_ingi/IR1_CPRA_X6/Documents/ss.arff");
Instances data = new Instances(datafile);
// Instances instances = new Instances(datafile);
apriori.buildAssociations(data);
log.debug("Testing Apriori Algo Results Started ....");
log.debug("-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-");
log.debug("Number of Associations : " + apriori.getNumRules());
log.debug("Adding Association Information to ArrayList ..");
Object objectArrayOfAssociations[] = new Object[apriori.getNumRules()];
log.debug(apriori.getAllTheRules().toString());
for(int i=0; i<apriori.getNumRules(); i++) {
objectArrayOfAssociations[i] = apriori.getAllTheRules();
log.debug("Associations Discovered : " + objectArrayOfAssociations[i].toString());
}
}
}
申请表的输出:
2015-04-05 20:16:42 DEBUG App:48 - 发现的协会: [Lweka.core.FastVector; @ 19a96bae
2015-04-05 20:16:42 DEBUG App:48 - 发现的协会: [Lweka.core.FastVector; @ 19a96bae
2015-04-05 20:16:42 DEBUG App:48 - 发现的协会: [Lweka.core.FastVector; @ 19a96bae
2015-04-05 20:16:42 DEBUG App:48 - 发现的协会: [Lweka.core.FastVector; @ 19a96bae
答案 0 :(得分:1)
apriori.getAllTheRules()
返回一个FastVectors数组,但是FastVector没有toString()方法来转储其内容,如你的意图所暗示的那样。您可以扩展FastVector并添加自己的toString()或编写一个小帮助方法来根据需要转储内容。 Here's an example
类似的东西:
for(FastVector fastVector : apriori.getAllTheRules())
log.debug(fastVector.getRevision());
// or whichever attribute you want to show