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java.lang.Objectweka.core.converters.AbstractLoader
weka.core.converters.AbstractFileLoader
weka.core.converters.C45Loader
public class C45Loader
Reads a file that is C45 format. Can take a filestem or filestem with .names or .data appended. Assumes that path/<filestem>.names and path/<filestem>.data exist and contain the names and data respectively.
Loader
,
Serialized FormField Summary | |
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static java.lang.String |
FILE_EXTENSION
the file extension |
Constructor Summary | |
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C45Loader()
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Method Summary | |
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Instances |
getDataSet()
Return the full data set. |
java.lang.String |
getFileDescription()
Returns a description of the file type. |
java.lang.String |
getFileExtension()
Get the file extension used for arff files |
java.lang.String[] |
getFileExtensions()
Gets all the file extensions used for this type of file |
Instance |
getNextInstance(Instances structure)
Read the data set incrementally---get the next instance in the data set or returns null if there are no more instances to get. |
Instances |
getStructure()
Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances. |
java.lang.String |
globalInfo()
Returns a string describing this attribute evaluator |
static void |
main(java.lang.String[] args)
Main method for testing this class. |
void |
reset()
Resets the Loader ready to read a new data set |
void |
setSource(java.io.File file)
Resets the Loader object and sets the source of the data set to be the supplied File object. |
Methods inherited from class weka.core.converters.AbstractFileLoader |
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retrieveFile, runFileLoader, setFile |
Methods inherited from class weka.core.converters.AbstractLoader |
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setSource |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static java.lang.String FILE_EXTENSION
Constructor Detail |
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public C45Loader()
Method Detail |
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public java.lang.String globalInfo()
public void reset() throws java.io.IOException
reset
in interface Loader
reset
in class AbstractFileLoader
java.io.IOException
- if something goes wrongpublic java.lang.String getFileExtension()
getFileExtension
in interface FileSourcedConverter
public java.lang.String[] getFileExtensions()
getFileExtensions
in interface FileSourcedConverter
public java.lang.String getFileDescription()
getFileDescription
in interface FileSourcedConverter
public void setSource(java.io.File file) throws java.io.IOException
setSource
in interface Loader
setSource
in class AbstractFileLoader
file
- the source file.
java.io.IOException
- if an error occurspublic Instances getStructure() throws java.io.IOException
getStructure
in interface Loader
getStructure
in class AbstractLoader
java.io.IOException
- if an error occurspublic Instances getDataSet() throws java.io.IOException
getDataSet
in interface Loader
getDataSet
in class AbstractLoader
java.io.IOException
- if there is no source or parsing failspublic Instance getNextInstance(Instances structure) throws java.io.IOException
getNextInstance
in interface Loader
getNextInstance
in class AbstractLoader
structure
- the dataset header information, will get updated in
case of string or relational attributes
java.io.IOException
- if there is an error during parsingpublic static void main(java.lang.String[] args)
args
- should contain <filestem>[.names | data]
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