类 CheckKernel
java.lang.Object
weka.core.Check
weka.core.CheckScheme
weka.classifiers.functions.supportVector.CheckKernel
- 所有已实现的接口:
OptionHandler
,RevisionHandler
Class for examining the capabilities and finding problems with
kernels. If you implement an kernels using the WEKA.libraries,
you should run the checks on it to ensure robustness and correct
operation. Passing all the tests of this object does not mean
bugs in the kernels don't exist, but this will help find some
common ones.
Typical usage:
java weka.classifiers.functions.supportVector.CheckKernel -W kernel_name
-- kernel_options
CheckKernel reports on the following:
- Kernel abilities
- Possible command line options to the kernels
- Whether the kernels can predict nominal, numeric, string, date or relational class attributes.
- Whether the kernels can handle numeric predictor attributes
- Whether the kernels can handle nominal predictor attributes
- Whether the kernels can handle string predictor attributes
- Whether the kernels can handle date predictor attributes
- Whether the kernels can handle relational predictor attributes
- Whether the kernels can handle multi-instance data
- Whether the kernels can handle missing predictor values
- Whether the kernels can handle missing class values
- Whether a nominal kernels only handles 2 class problems
- Whether the kernels can handle instance weights
- Correct functioning
- Correct initialisation during buildKernel (i.e. no result changes when buildKernel called repeatedly)
- Whether the kernels alters the data passed to it (number of instances, instance order, instance weights, etc)
- Degenerate cases
- building kernels with zero training instances
- all but one predictor attribute values missing
- all predictor attribute values missing
- all but one class values missing
- all class values missing
weka.classifiers.AbstractKernelTest
uses this
class to test all the kernels. Any changes here, have to be
checked in that abstract test class, too.
Valid options are:
-D Turn on debugging output.
-S Silent mode - prints nothing to stdout.
-N <num> The number of instances in the datasets (default 20).
-nominal <num> The number of nominal attributes (default 2).
-nominal-values <num> The number of values for nominal attributes (default 1).
-numeric <num> The number of numeric attributes (default 1).
-string <num> The number of string attributes (default 1).
-date <num> The number of date attributes (default 1).
-relational <num> The number of relational attributes (default 1).
-num-instances-relational <num> The number of instances in relational/bag attributes (default 10).
-words <comma-separated-list> The words to use in string attributes.
-word-separators <chars> The word separators to use in string attributes.
-W Full name of the kernel analysed. eg: weka.classifiers.functions.supportVector.RBFKernel (default weka.classifiers.functions.supportVector.RBFKernel)
Options specific to kernel weka.classifiers.functions.supportVector.RBFKernel:
-D Enables debugging output (if available) to be printed. (default: off)
-no-checks Turns off all checks - use with caution! (default: checks on)
-C <num> The size of the cache (a prime number), 0 for full cache and -1 to turn it off. (default: 250007)
-G <num> The Gamma parameter. (default: 0.01)Options after -- are passed to the designated kernel.
- 版本:
- $Revision: 1.3 $
- 作者:
- Len Trigg (trigg@cs.waikato.ac.nz), FracPete (fracpete at waikato dot ac dot nz)
- 另请参阅:
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嵌套类概要
从类继承的嵌套类/接口 weka.core.CheckScheme
CheckScheme.PostProcessor
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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void
doTests()
Begin the tests, reporting results to System.outGet the kernel being testedString[]
Gets the current settings of the CheckKernel.Returns the revision string.Returns an enumeration describing the available options.static void
Test method for this classvoid
Set the lernel to test.void
setOptions
(String[] options) Parses a given list of options.从类继承的方法 weka.core.CheckScheme
attributeTypeToString, getNumDate, getNumInstances, getNumInstancesRelational, getNumNominal, getNumNumeric, getNumRelational, getNumString, getPostProcessor, getWords, getWordSeparators, hasClasspathProblems, setNumDate, setNumInstances, setNumInstancesRelational, setNumNominal, setNumNumeric, setNumRelational, setNumString, setPostProcessor, setWords, setWordSeparators
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构造器详细资料
-
CheckKernel
public CheckKernel()
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方法详细资料
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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CheckScheme
- 返回:
- an enumeration of all the available options.
-
setOptions
Parses a given list of options. Valid options are:-D Turn on debugging output.
-S Silent mode - prints nothing to stdout.
-N <num> The number of instances in the datasets (default 20).
-nominal <num> The number of nominal attributes (default 2).
-nominal-values <num> The number of values for nominal attributes (default 1).
-numeric <num> The number of numeric attributes (default 1).
-string <num> The number of string attributes (default 1).
-date <num> The number of date attributes (default 1).
-relational <num> The number of relational attributes (default 1).
-num-instances-relational <num> The number of instances in relational/bag attributes (default 10).
-words <comma-separated-list> The words to use in string attributes.
-word-separators <chars> The word separators to use in string attributes.
-W Full name of the kernel analysed. eg: weka.classifiers.functions.supportVector.RBFKernel (default weka.classifiers.functions.supportVector.RBFKernel)
Options specific to kernel weka.classifiers.functions.supportVector.RBFKernel:
-D Enables debugging output (if available) to be printed. (default: off)
-no-checks Turns off all checks - use with caution! (default: checks on)
-C <num> The size of the cache (a prime number), 0 for full cache and -1 to turn it off. (default: 250007)
-G <num> The Gamma parameter. (default: 0.01)
- 指定者:
setOptions
在接口中OptionHandler
- 覆盖:
setOptions
在类中CheckScheme
- 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 CheckKernel.- 指定者:
getOptions
在接口中OptionHandler
- 覆盖:
getOptions
在类中CheckScheme
- 返回:
- an array of strings suitable for passing to setOptions
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doTests
public void doTests()Begin the tests, reporting results to System.out- 指定者:
doTests
在类中CheckScheme
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setKernel
Set the lernel to test.- 参数:
value
- the kernel to use.
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getKernel
Get the kernel being tested- 返回:
- the kernel being tested
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getRevision
Returns the revision string.- 返回:
- the revision
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main
Test method for this class- 参数:
args
- the commandline parameters
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