类 Expression
java.lang.Object
weka.datagenerators.DataGenerator
weka.datagenerators.RegressionGenerator
weka.datagenerators.classifiers.regression.MexicanHat
weka.datagenerators.classifiers.regression.Expression
- 所有已实现的接口:
Serializable
,OptionHandler
,Randomizable
,RevisionHandler
A data generator for generating y according to a given expression out of randomly generated x.
E.g., the mexican hat can be generated like this:
sin(abs(a1)) / abs(a1)
In addition to this function, the amplitude can be changed and gaussian noise can be added. Valid options are:
E.g., the mexican hat can be generated like this:
sin(abs(a1)) / abs(a1)
In addition to this function, the amplitude can be changed and gaussian noise can be added. Valid options are:
-h Prints this help.
-o <file> The name of the output file, otherwise the generated data is printed to stdout.
-r <name> The name of the relation.
-d Whether to print debug informations.
-S The seed for random function (default 1)
-n <num> The number of examples to generate (default 100)
-A <num> The amplitude multiplier (default 1.0).
-R <num>..<num> The range x is randomly drawn from (default -10.0..10.0).
-N <num> The noise rate (default 0.0).
-V <num> The noise variance (default 1.0).
-E <expression> The expression to use for generating y out of x (default sin(abs(a1)) / abs(a1)).
- 版本:
- $Revision: 1.5 $
- 作者:
- FracPete (fracpete at waikato dot ac dot nz)
- 另请参阅:
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构造器概要
构造器 -
方法概要
修饰符和类型方法说明Returns the tip text for this propertyInitializes the format for the dataset produced.Returns the tip text for this propertyGenerates one example of the dataset.Generates all examples of the dataset.Generates a comment string that documentats the data generator.Generates a comment string that documentates the data generator.Gets the mathematical expression for generating y out of xString[]
Gets the current settings of the datagenerator BIRCHCluster.Returns the revision string.boolean
Return if single mode is set for the given data generator mode depends on option setting and or generator type.Returns a string describing this data generator.Returns an enumeration describing the available options.static void
Main method for testing this class.void
setExpression
(String value) Sets the mathematical expression to generate y out of x.void
setOptions
(String[] options) Parses a list of options for this object.从类继承的方法 weka.datagenerators.classifiers.regression.MexicanHat
getAmplitude, getMaxRange, getMinRange, getNoiseRate, getNoiseVariance, maxRangeTipText, minRangeTipText, noiseRateTipText, noiseVarianceTipText, setAmplitude, setMaxRange, setMinRange, setNoiseRate, setNoiseVariance
从类继承的方法 weka.datagenerators.RegressionGenerator
getNumExamples, numExamplesTipText, setNumExamples
从类继承的方法 weka.datagenerators.DataGenerator
debugTipText, defaultOutput, formatTipText, getDatasetFormat, getDebug, getNumExamplesAct, getOutput, getRandom, getRelationName, getSeed, makeData, outputTipText, randomTipText, relationNameTipText, seedTipText, setDatasetFormat, setDebug, setOutput, setRandom, setRelationName, setSeed
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构造器详细资料
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Expression
public Expression()initializes the generator
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方法详细资料
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globalInfo
Returns a string describing this data generator.- 覆盖:
globalInfo
在类中MexicanHat
- 返回:
- a description of the data generator suitable for displaying in the explorer/experimenter gui
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listOptions
Returns an enumeration describing the available options.- 指定者:
listOptions
在接口中OptionHandler
- 覆盖:
listOptions
在类中MexicanHat
- 返回:
- an enumeration of all the available options
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setOptions
Parses a list of options for this object. Valid options are:-h Prints this help.
-o <file> The name of the output file, otherwise the generated data is printed to stdout.
-r <name> The name of the relation.
-d Whether to print debug informations.
-S The seed for random function (default 1)
-n <num> The number of examples to generate (default 100)
-A <num> The amplitude multiplier (default 1.0).
-R <num>..<num> The range x is randomly drawn from (default -10.0..10.0).
-N <num> The noise rate (default 0.0).
-V <num> The noise variance (default 1.0).
-E <expression> The expression to use for generating y out of x (default sin(abs(a1)) / abs(a1)).
- 指定者:
setOptions
在接口中OptionHandler
- 覆盖:
setOptions
在类中MexicanHat
- 参数:
options
- the list of options as an array of strings- 抛出:
Exception
- if an option is not supported
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getOptions
Gets the current settings of the datagenerator BIRCHCluster.- 指定者:
getOptions
在接口中OptionHandler
- 覆盖:
getOptions
在类中MexicanHat
- 返回:
- an array of strings suitable for passing to setOptions
- 另请参阅:
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DataGenerator.removeBlacklist(String[])
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amplitudeTipText
Returns the tip text for this property- 覆盖:
amplitudeTipText
在类中MexicanHat
- 返回:
- tip text for this property suitable for displaying in the explorer/experimenter gui
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getExpression
Gets the mathematical expression for generating y out of x- 返回:
- the expression for computing y
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setExpression
Sets the mathematical expression to generate y out of x.- 参数:
value
- the expression for computing y
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expressionTipText
Returns the tip text for this property- 返回:
- tip text for this property suitable for displaying in the explorer/experimenter gui
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getSingleModeFlag
Return if single mode is set for the given data generator mode depends on option setting and or generator type.- 覆盖:
getSingleModeFlag
在类中MexicanHat
- 返回:
- single mode flag
- 抛出:
Exception
- if mode is not set yet
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defineDataFormat
Initializes the format for the dataset produced. Must be called before the generateExample or generateExamples methods are used. Re-initializes the random number generator with the given seed.- 覆盖:
defineDataFormat
在类中MexicanHat
- 返回:
- the format for the dataset
- 抛出:
Exception
- if the generating of the format failed- 另请参阅:
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generateExample
Generates one example of the dataset.- 覆盖:
generateExample
在类中MexicanHat
- 返回:
- the generated example
- 抛出:
Exception
- if the format of the dataset is not yet definedException
- if the generator only works with generateExamples which means in non single mode
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generateExamples
Generates all examples of the dataset. Re-initializes the random number generator with the given seed, before generating instances.- 覆盖:
generateExamples
在类中MexicanHat
- 返回:
- the generated dataset
- 抛出:
Exception
- if the format of the dataset is not yet definedException
- if the generator only works with generateExample, which means in single mode- 另请参阅:
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generateStart
Generates a comment string that documentates the data generator. By default this string is added at the beginning of the produced output as ARFF file type, next after the options.- 覆盖:
generateStart
在类中MexicanHat
- 返回:
- string contains info about the generated rules
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generateFinished
Generates a comment string that documentats the data generator. By default this string is added at the end of theproduces output as ARFF file type.- 覆盖:
generateFinished
在类中MexicanHat
- 返回:
- string contains info about the generated rules
- 抛出:
Exception
- if the generating of the documentaion fails
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getRevision
Returns the revision string.- 指定者:
getRevision
在接口中RevisionHandler
- 覆盖:
getRevision
在类中MexicanHat
- 返回:
- the revision
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main
Main method for testing this class.- 参数:
args
- should contain arguments for the data producer:
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