org.dkpro.tc.ml.vowpalwabbit.core

Class VowpalWabbitPredictor

java.lang.Object

org.dkpro.tc.ml.vowpalwabbit.core.VowpalWabbit

org.dkpro.tc.ml.vowpalwabbit.core.VowpalWabbitPredictor

All Implemented Interfaces:

TcPredictor

public class VowpalWabbitPredictor
extends VowpalWabbit
implements TcPredictor

Constructor Summary

Constructors

Constructor and Description
VowpalWabbitPredictor()

Method Summary

Modifier and Type	Method and Description
static void	executePrediction(List<String> command) Takes an assembled command and executes it, the retrieved output is returned as string
static String	executePredictionFromStdin(List<String> command, String aDataString) Performs a prediction where the feature information is provided as strng
static List<String>	getTestCommand(File aTestFile, File aModel, File anOutputTargetFile)
static List<String>	getTestCommandForPredictionFromStdin(File aModel) Builds a command that can be executed with a ProcessBuilder, which calls the binary with the provided model
List<String>	predict(File data, File model) Executes the binary with the provided model and data file.
String	predict(String dataAsString, File model) Executes the binary with the provided model, the feature information are provided loaded into a string which is provided via stdin
static String	readProcessOutput(Process aProcess)

Methods inherited from class org.dkpro.tc.ml.vowpalwabbit.core.VowpalWabbit

assembleCommand, getExecutable, getPlatformDetector, uninstallExecutable

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

VowpalWabbitPredictor

public VowpalWabbitPredictor()

Method Detail

predict

public List<String> predict(File data,
                            File model)
                     throws Exception

Executes the binary with the provided model and data file. The data is read from file.

Specified by:

predict in interface TcPredictor

Parameters:

data - The feature file

model - The model to be used

Returns:

The predictions as string

Throws:

Exception - In case of errors

predict

public String predict(String dataAsString,
                      File model)
               throws Exception

Executes the binary with the provided model, the feature information are provided loaded into a string which is provided via stdin

Parameters:

dataAsString - The string representation of the features

model - The model to be used

Returns:

The predictions as string

Throws:

Exception - In case of errors

getTestCommandForPredictionFromStdin

public static List<String> getTestCommandForPredictionFromStdin(File aModel)
                                                         throws Exception

Builds a command that can be executed with a ProcessBuilder, which calls the binary with the provided model

Parameters:

aModel - The model to be used

Returns:

The command as list

Throws:

Exception - In case of errors

executePredictionFromStdin

public static String executePredictionFromStdin(List<String> command,
                                                String aDataString)
                                         throws Exception

Performs a prediction where the feature information is provided as strng

Parameters:

command - The command that is executed

aDataString - The feature file as string

Returns:

The predictions as string

Throws:

Exception - In case of errors

getTestCommand

public static List<String> getTestCommand(File aTestFile,
                                          File aModel,
                                          File anOutputTargetFile)
                                   throws Exception

Parameters:

aTestFile - A file with the feature information for prediction

aModel - The model to be used

anOutputTargetFile - Output target

Returns:

The assembled test command

Throws:

Exception - In case of an exception

executePrediction

public static void executePrediction(List<String> command)
                              throws Exception

Takes an assembled command and executes it, the retrieved output is returned as string

Parameters:

command - The command for execution

Throws:

Exception - In case of errors

readProcessOutput

public static String readProcessOutput(Process aProcess)