org.datavec.api.records.reader.impl.misc

Class LibSvmRecordReader

java.lang.Object

org.datavec.api.records.reader.BaseRecordReader

org.datavec.api.records.reader.impl.LineRecordReader

org.datavec.api.records.reader.impl.misc.SVMLightRecordReader

org.datavec.api.records.reader.impl.misc.LibSvmRecordReader

All Implemented Interfaces:

Closeable, Serializable, AutoCloseable, Configurable, RecordReader

public class LibSvmRecordReader
extends SVMLightRecordReader

Record reader for libsvm format, which is closely related to SVMLight format. Similar to scikit-learn we use a single reader for both formats, so this class is a subclass of SVMLightRecordReader. Further details on the format can be found at
- http://svmlight.joachims.org/
- http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/multilabel.html
- http://scikit-learn.org/stable/modules/generated/sklearn.datasets.load_svmlight_file.html

Author:

Adam Gibson (original), dave@skymind.io

See Also:

SVMLightRecordReader, Serialized Form

Field Summary

Fields inherited from class org.datavec.api.records.reader.impl.misc.SVMLightRecordReader

ALLOWED_DELIMITERS, appendLabel, COMMENT_CHAR, FEATURE_DELIMITER, LABEL_DELIMITER, LABEL_ONE, LABEL_ZERO, multilabel, MULTILABEL, NAME_SPACE, NUM_ATTRIBUTES, NUM_FEATURES, NUM_LABELS, numFeatures, numLabels, ONE, PREFERRED_DELIMITER, QID_PREFIX, recordLookahead, ZERO, ZERO_BASED_INDEXING, ZERO_BASED_LABEL_INDEXING, zeroBasedIndexing, zeroBasedLabelIndexing

Fields inherited from class org.datavec.api.records.reader.impl.LineRecordReader

charset, conf, initialized, lineIndex, locations, splitIndex

Fields inherited from class org.datavec.api.records.reader.BaseRecordReader

inputSplit, listeners, streamCreatorFn

Fields inherited from interface org.datavec.api.records.reader.RecordReader

APPEND_LABEL, LABELS

Constructor Summary

Constructors

Constructor and Description
LibSvmRecordReader()

Method Summary

Modifier and Type	Method and Description
void	setConf(Configuration conf) Set configuration.

Methods inherited from class org.datavec.api.records.reader.impl.misc.SVMLightRecordReader

getNextRecord, hasNext, initialize, next, nextRecord, onLocationOpen, record, reset

Methods inherited from class org.datavec.api.records.reader.impl.LineRecordReader

close, closeIfRequired, getConf, getIterator, getLabels, initialize, loadFromMetaData, loadFromMetaData, resetSupported

Methods inherited from class org.datavec.api.records.reader.BaseRecordReader

batchesSupported, getListeners, invokeListeners, next, setListeners, setListeners

Methods inherited from class java.lang.Object

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

Constructor Detail

LibSvmRecordReader

public LibSvmRecordReader()

Method Detail

setConf

public void setConf(Configuration conf)

Description copied from class: SVMLightRecordReader

Set configuration.

Specified by:

setConf in interface Configurable

Overrides:

setConf in class SVMLightRecordReader

Parameters:

conf - DataVec configuration