从java程序访问Rapid Miner API时出错

时间:2013-10-25 13:15:41

标签: machine-learning data-mining text-mining rapidminer

我有一个需要集群的演示数据。该实用程序应该将数据发送到快速矿工算法,然后检索结果。我使用Rapid Miner API来使用快速挖掘器的现有算法。但是我遇到了使用此API的问题。

Java类:

package rajeev.rapidminer.main;

import java.io.File;
import java.io.IOException;

import com.rapidminer.Process;
import com.rapidminer.RapidMiner;
import com.rapidminer.RapidMiner.ExecutionMode;
import com.rapidminer.operator.IOObject;
import com.rapidminer.operator.OperatorException;
import com.rapidminer.repository.IOObjectEntry;
import com.rapidminer.repository.MalformedRepositoryLocationException;
import com.rapidminer.repository.RepositoryException;
import com.rapidminer.repository.RepositoryLocation;
import com.rapidminer.tools.XMLException;



public class Main {

public static void main(String a[]) throws IOException, XMLException, RepositoryException, OperatorException
{
    String rmpPath="C:/Users/rajeev-s/.RapidMiner5/repositories/Local Repository/DemoClustering.rmp";
    RapidMiner.setExecutionMode(ExecutionMode.COMMAND_LINE);
    RapidMiner.init();
    Process process=new Process(new File(rmpPath));

    RepositoryLocation modelLocation=new RepositoryLocation("//C:/Users/rajeev-s/.RapidMiner5/repositories/Local Repository/ClusterDemoOutput");
    IOObject model=((IOObjectEntry)modelLocation.locateEntry()).retrieveData(null);

    RepositoryLocation testDataLocation=new RepositoryLocation("//LocalRepository/TestData.txt");
    IOObject testData=((IOObjectEntry)testDataLocation.locateEntry()).retrieveData(null);

    com.rapidminer.operator.IOContainer ioInput = new com.rapidminer.operator.IOContainer(new IOObject[] { model, testData });
    process.run(ioInput);
    process.run(ioInput);
    final long start = System.currentTimeMillis();
    final com.rapidminer.operator.IOContainer ioResult = process.run(ioInput);
    final long end = System.currentTimeMillis();
    System.out.println("T:" + (end - start));
}

}

错误堆栈跟踪是:

Oct 25, 2013 6:28:53 PM com.rapidminer.tools.ParameterService init
INFO: Reading configuration resource com/rapidminer/resources/rapidminerrc.
Oct 25, 2013 6:28:53 PM com.rapidminer.tools.I18N <clinit>
INFO: Set locale to en.
Oct 25, 2013 6:28:54 PM com.rapid_i.Launcher ensureRapidMinerHomeSet
INFO: Property rapidminer.home is not set. Guessing.
Oct 25, 2013 6:28:54 PM com.rapid_i.Launcher ensureRapidMinerHomeSet
INFO: Trying parent directory of 'C:\Program Files\Rapid-     I\RapidMiner5\lib\launcher.jar'...gotcha!
Oct 25, 2013 6:28:54 PM com.rapid_i.Launcher ensureRapidMinerHomeSet
INFO: Trying parent directory of 'C:\Program Files\Rapid-   I\RapidMiner5\lib\rapidminer.jar'...gotcha!
Oct 25, 2013 6:29:00 PM com.rapidminer.tools.expression.parser.ExpressionParserFactory  <clinit>
INFO: Default version of expression parser registered successfully
Oct 25, 2013 6:29:06 PM com.rapidminer.parameter.ParameterTypePassword decryptPassword
WARNING: Password in XML file looks like unencrypted plain text.
Oct 25, 2013 6:29:10 PM com.rapidminer.tools.OperatorService init
INFO: Number of registered operator classes: 443; number of registered operator    descriptions: 444; number of replacements: 403
Oct 25, 2013 6:29:10 PM com.rapidminer.tools.jdbc.JDBCProperties <init>

警告:缺少ODBC Bridge的数据库驱动程序类名(例如Access)     2013年10月25日下午6:29:10 com.rapidminer.tools.jdbc.JDBCProperties registerDrivers     信息:找不到JDBC驱动程序ca.ingres.jdbc.IngresDriver。可能没有安装驱动程序。     [致命错误]:1:1:文件过早结束。     线程“main”中的异常com.rapidminer.repository.RepositoryException:请求的存储库C:不存在。     at com.rapidminer.repository.RepositoryManager.getRepository(RepositoryManager.java:201)     at com.rapidminer.repository.RepositoryLocation.getRepository(RepositoryLocation.java:139)     at com.rapidminer.repository.RepositoryLocation.locateEntry(RepositoryLocation.java:162)     在rajeev.rapidminer.main.Main.main(Main.java:29)

当我将“本地存储库”复制到我的类路径并将路径更改为:

//Local Repository/ClusterDemoOutput

然后生成跟踪堆栈跟踪:

Exception in thread "main" com.rapidminer.repository.RepositoryException: Requested  repository LocalRepository does not exist.
    at     com.rapidminer.repository.RepositoryManager.getRepository(RepositoryManager.java:201)
    at  com.rapidminer.repository.RepositoryLocation.getRepository(RepositoryLocation.java:139)
    at  com.rapidminer.repository.RepositoryLocation.locateEntry(RepositoryLocation.java:162)
    at rajeev.rapidminer.main.Main.main(Main.java:29)

请告诉我在哪里放置存储库。

另外请建议任何适当的博客或教程,解释如何使用java代码中的Rapid Miner算法(我在谷歌上搜索的内容并未提及所有细节)

由于

2 个答案:

答案 0 :(得分:1)

我为上述问题找到了一个有效的解决方案。我不确定它是否是最好的,但它对我有用。

public class MinerForum {
    public static void main(String a[]) throws IOException, XMLException,  RepositoryException, OperatorException
    {
        int[] data={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20};
        List<Attribute> attributes=new ArrayList<Attribute>();
        String[] columns={"column1"};
        DataTable table=new SimpleDataTable("table1",columns);      
        for(int i=0;i<21;i++)
        {
            double[] value={i};
            DataTableRow row=new SimpleDataTableRow(value, i+"");
            table.add(row);
        }

        RapidMiner.setExecutionMode(ExecutionMode.COMMAND_LINE);
        RapidMiner.init();      
        com.rapidminer.Process myProcess = new com.rapidminer.Process(new File    ("D:\\drools\\Repository1\\Example1.rmp"));       
        IOContainer ioInput = new IOContainer();        
        IOContainer ioResult = myProcess.run(ioInput);
        // simple use 'ioResult' to display the results you want.       
    }   
}

答案 1 :(得分:0)

确定

new RepositoryLocation("//C:/Users/

有效位置?对我而言,它看起来更像是一个错字。

但是,您应该在rapidminer论坛中提问;你更有可能在那里与快速通道专家交谈,而不是在通用编程网站上。