weka.experiment

## Class RemoteExperiment

- java.lang.Object
- - weka.experiment.Experiment
  - - weka.experiment.RemoteExperiment

- All Implemented Interfaces:
    java.io.Serializable, OptionHandler, RevisionHandler

      public class RemoteExperiment
      extends Experiment

  Holds all the necessary configuration information for a distributed experiment. This object is able to be serialized for storage on disk.

  This class is experimental at present. Has been tested using CSVResultListener (sending results to standard out) and DatabaseResultListener (InstantDB + RmiJdbc bridge).

  Getting started:

  Start InstantDB (with the RMI bridge) on some machine. If using java2 then specify -Djava.security.policy=db.policy to the virtual machine. Where db.policy is as follows:

       grant {
         permission java.security.AllPermission;
       };

  Start RemoteEngine servers on x machines as per the instructons in the README_Experiment_Gui file. There must be a DatabaseUtils.props in either the HOME or current directory of each machine, listing all necessary jdbc drivers.

  The machine where a RemoteExperiment is started must also have a copy of DatabaseUtils.props listing the URL to the machine where the database server is running (RmiJdbc + InstantDB).

  Here is an example of starting a RemoteExperiment:

       java -Djava.rmi.server.codebase=file:/path to weka classes/ \
       weka.experiment.RemoteExperiment -L 1 -U 10 \
       -T /home/ml/datasets/UCI/iris.arff \
       -D "weka.experiment.DatabaseResultListener" \
       -P "weka.experiment.RandomSplitResultProducer" \
       -h rosebud.cs.waikato.ac.nz -h blackbird.cs.waikato.ac.nz -r -- \
       -W weka.experiment.ClassifierSplitEvaluator -- \
       -W weka.classifiers.bayes.NaiveBayes

  The "codebase" property tells rmi where to serve up weka classes from. This can either be a file url (as long as a shared file system is being used that is accessable by the remoteEngine servers), or http url (which of course supposes that a web server is running and you have put your weka classes somewhere that is web accessable). If using a file url the trailing "/" is *most* important unless the weka classes are in a jar file.

  Valid options are:

       -L <num>
        The lower run number to start the experiment from.
        (default 1)

       -U <num>
        The upper run number to end the experiment at (inclusive).
        (default 10)

       -T <arff file>
        The dataset to run the experiment on.
        (required, may be specified multiple times)

       -P <class name>
        The full class name of a ResultProducer (required).
        eg: weka.experiment.RandomSplitResultProducer

       -D <class name>
        The full class name of a ResultListener (required).
        eg: weka.experiment.CSVResultListener

       -N <string>
        A string containing any notes about the experiment.
        (default none)

       Options specific to result producer weka.experiment.RandomSplitResultProducer:

       -P <percent>
        The percentage of instances to use for training.
        (default 66)

       -D
       Save raw split evaluator output.

       -O <file/directory name/path>
        The filename where raw output will be stored.
        If a directory name is specified then then individual
        outputs will be gzipped, otherwise all output will be
        zipped to the named file. Use in conjuction with -D. (default splitEvalutorOut.zip)

       -W <class name>
        The full class name of a SplitEvaluator.
        eg: weka.experiment.ClassifierSplitEvaluator

       -R
        Set when data is not to be randomized and the data sets' size.
        Is not to be determined via probabilistic rounding.

       Options specific to split evaluator weka.experiment.ClassifierSplitEvaluator:

       -W <class name>
        The full class name of the classifier.
        eg: weka.classifiers.bayes.NaiveBayes

       -C <index>
        The index of the class for which IR statistics
        are to be output. (default 1)

       -I <index>
        The index of an attribute to output in the
        results. This attribute should identify an
        instance in order to know which instances are
        in the test set of a cross validation. if 0
        no output (default 0).

       -P
        Add target and prediction columns to the result
        for each fold.

       Options specific to classifier weka.classifiers.rules.ZeroR:

       -D
        If set, classifier is run in debug mode and
        may output additional info to the console

  Version:
    $Revision: 10376 $
  Author:
    Mark Hall (mhall@cs.waikato.ac.nz)
  See Also:
    Serialized Form

- - ### Field Summary

    - ### Fields inherited from class weka.experiment.Experiment

      `FILE_EXTENSION`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `RemoteExperiment()` Construct a new RemoteExperiment using an empty Experiment as base Experiment
    `RemoteExperiment(Experiment base)` Construct a new RemoteExperiment using a base Experiment

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `abortExperiment()` Set the abort flag
    `void` | `addRemoteExperimentListener(RemoteExperimentListener r)` Add an object to the list of those interested in recieving update information from the RemoteExperiment
    `void` | `addRemoteHost(java.lang.String hostname)` Add a host name to the list of remote hosts
    `void` | `advanceCounters()` overides the one in Experiment
    `Experiment` | `getBaseExperiment()` Get the base experiment used by this remote experiment
    `javax.swing.DefaultListModel` | `getRemoteHosts()` Get the list of remote host names
    `java.lang.String` | `getRevision()` Returns the revision string.
    `boolean` | `getSplitByDataSet()` Returns true if sub experiments are to be created on the basis of data set..
    `void` | `initialize()` Prepares a remote experiment for running, creates sub experiments
    `void` | `launchNext(int wexp, int ah)` Launch a sub experiment on a remote host
    `static void` | `main(java.lang.String[] args)` Configures/Runs the Experiment from the command line.
    `void` | `nextIteration()` Overides the one in Experiment
    `void` | `postProcess()` overides the one in Experiment
    `void` | `runExperiment()` Overides runExperiment in Experiment
    `void` | `setBaseExperiment(Experiment base)` Set the base experiment.
    `void` | `setDatasets(javax.swing.DefaultListModel ds)` Set the datasets to use in the experiment
    `void` | `setNotes(java.lang.String newNotes)` Set the user notes.
    `void` | `setPropertyArray(java.lang.Object newPropArray)` Sets the array of values to set the custom property to.
    `void` | `setPropertyPath(PropertyNode[] newPropertyPath)` Sets the path of properties taken to get to the custom property to iterate over.
    `void` | `setRemoteHosts(javax.swing.DefaultListModel list)` Set the list of remote host names
    `void` | `setResultListener(ResultListener newResultListener)` Sets the result listener where results will be sent.
    `void` | `setResultProducer(ResultProducer newResultProducer)` Set the result producer used for the current experiment.
    `void` | `setRunLower(int newRunLower)` Set the lower run number for the experiment.
    `void` | `setRunUpper(int newRunUpper)` Set the upper run number for the experiment.
    `void` | `setSplitByDataSet(boolean sd)` Set whether sub experiments are to be created on the basis of data set.
    `void` | `setUsePropertyIterator(boolean newUsePropertyIterator)` Sets whether the custom property iterator should be used.
    `java.lang.String` | `toString()` Overides toString in Experiment

    - ### Methods inherited from class weka.experiment.Experiment

      `classFirst, getAdvanceDataSetFirst, getCurrentDatasetNumber, getCurrentPropertyNumber, getCurrentRunNumber, getDatasets, getNotes, getOptions, getPropertyArray, getPropertyArrayLength, getPropertyArrayValue, getPropertyPath, getResultListener, getResultProducer, getRunLower, getRunUpper, getUsePropertyIterator, hasMoreIterations, listOptions, read, runExperiment, setAdvanceDataSetFirst, setOptions, write`

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### RemoteExperiment

          public RemoteExperiment()
                           throws java.lang.Exception

      Construct a new RemoteExperiment using an empty Experiment as base Experiment
      Throws:
        `java.lang.Exception` - if the base experiment is null

    - #### RemoteExperiment

          public RemoteExperiment(Experiment base)
                           throws java.lang.Exception

      Construct a new RemoteExperiment using a base Experiment
      Parameters:
        `base` - the base experiment to use
      Throws:
        `java.lang.Exception` - if the base experiment is null

  - ### Method Detail

    - #### getSplitByDataSet

          public boolean getSplitByDataSet()

      Returns true if sub experiments are to be created on the basis of data set..
      Returns:
        a `boolean` value indicating whether sub experiments are to be created on the basis of data set (true) or run number (false).

    - #### setSplitByDataSet

          public void setSplitByDataSet(boolean sd)

      Set whether sub experiments are to be created on the basis of data set.
      Parameters:
        `sd` - true if sub experiments are to be created on the basis of data set. Otherwise sub experiments are created on the basis of run number.

    - #### addRemoteExperimentListener

          public void addRemoteExperimentListener(RemoteExperimentListener r)

      Add an object to the list of those interested in recieving update information from the RemoteExperiment
      Parameters:
        `r` - a listener

    - #### getBaseExperiment

          public Experiment getBaseExperiment()

      Get the base experiment used by this remote experiment
      Returns:
        the base experiment

    - #### setBaseExperiment

          public void setBaseExperiment(Experiment base)
                                 throws java.lang.Exception

      Set the base experiment. A sub experiment will be created for each run in the base experiment.
      Parameters:
        `base` - the base experiment to use.
      Throws:
        `java.lang.Exception` - if supplied base experiment is null

    - #### setNotes

          public void setNotes(java.lang.String newNotes)

      Set the user notes.
      Overrides:
        `setNotes` in class `Experiment`
      Parameters:
        `newNotes` - New user notes.

    - #### setRunLower

          public void setRunLower(int newRunLower)

      Set the lower run number for the experiment.
      Overrides:
        `setRunLower` in class `Experiment`
      Parameters:
        `newRunLower` - the lower run number for the experiment.

    - #### setRunUpper

          public void setRunUpper(int newRunUpper)

      Set the upper run number for the experiment.
      Overrides:
        `setRunUpper` in class `Experiment`
      Parameters:
        `newRunUpper` - the upper run number for the experiment.

    - #### setResultListener

          public void setResultListener(ResultListener newResultListener)

      Sets the result listener where results will be sent.
      Overrides:
        `setResultListener` in class `Experiment`
      Parameters:
        `newResultListener` - the result listener where results will be sent.

    - #### setResultProducer

          public void setResultProducer(ResultProducer newResultProducer)

      Set the result producer used for the current experiment.
      Overrides:
        `setResultProducer` in class `Experiment`
      Parameters:
        `newResultProducer` - result producer to use for the current experiment.

    - #### setDatasets

          public void setDatasets(javax.swing.DefaultListModel ds)

      Set the datasets to use in the experiment
      Overrides:
        `setDatasets` in class `Experiment`
      Parameters:
        `ds` - the list of datasets to use

    - #### setUsePropertyIterator

          public void setUsePropertyIterator(boolean newUsePropertyIterator)

      Sets whether the custom property iterator should be used.
      Overrides:
        `setUsePropertyIterator` in class `Experiment`
      Parameters:
        `newUsePropertyIterator` - true if so

    - #### setPropertyPath

          public void setPropertyPath(PropertyNode[] newPropertyPath)

      Sets the path of properties taken to get to the custom property to iterate over.
      Overrides:
        `setPropertyPath` in class `Experiment`
      Parameters:
        `newPropertyPath` - an array of PropertyNodes

    - #### setPropertyArray

          public void setPropertyArray(java.lang.Object newPropArray)

      Sets the array of values to set the custom property to.
      Overrides:
        `setPropertyArray` in class `Experiment`
      Parameters:
        `newPropArray` - a value of type Object which should be an array of the appropriate values.

    - #### initialize

          public void initialize()
                          throws java.lang.Exception

      Prepares a remote experiment for running, creates sub experiments
      Overrides:
        `initialize` in class `Experiment`
      Throws:
        `java.lang.Exception` - if an error occurs

    - #### abortExperiment

          public void abortExperiment()

      Set the abort flag

    - #### launchNext

          public void launchNext(int wexp,
                        int ah)

      Launch a sub experiment on a remote host
      Parameters:
        `wexp` - the index of the sub experiment to launch
        `ah` - the index of the available host to launch on

    - #### nextIteration

          public void nextIteration()
                             throws java.lang.Exception

      Overides the one in Experiment
      Overrides:
        `nextIteration` in class `Experiment`
      Throws:
        `java.lang.Exception` - never throws an exception

    - #### advanceCounters

          public void advanceCounters()

      overides the one in Experiment
      Overrides:
        `advanceCounters` in class `Experiment`

    - #### postProcess

          public void postProcess()

      overides the one in Experiment
      Overrides:
        `postProcess` in class `Experiment`

    - #### addRemoteHost

          public void addRemoteHost(java.lang.String hostname)

      Add a host name to the list of remote hosts
      Parameters:
        `hostname` - the host name to add to the list

    - #### getRemoteHosts

          public javax.swing.DefaultListModel getRemoteHosts()

      Get the list of remote host names
      Returns:
        the list of remote host names

    - #### setRemoteHosts

          public void setRemoteHosts(javax.swing.DefaultListModel list)

      Set the list of remote host names
      Parameters:
        `list` - the list of remote host names

    - #### toString

          public java.lang.String toString()

      Overides toString in Experiment
      Overrides:
        `toString` in class `Experiment`
      Returns:
        a description of this remote experiment

    - #### runExperiment

          public void runExperiment()

      Overides runExperiment in Experiment
      Overrides:
        `runExperiment` in class `Experiment`

    - #### getRevision

          public java.lang.String getRevision()

      Returns the revision string.
      Specified by:
        `getRevision` in interface `RevisionHandler`
      Overrides:
        `getRevision` in class `Experiment`
      Returns:
        the revision

    - #### main

          public static void main(java.lang.String[] args)

      Configures/Runs the Experiment from the command line.
      Parameters:
        `args` - command line arguments to the Experiment.