com.structed.dal

Class LazyReader

java.lang.Object

com.structed.dal.StandardReader

com.structed.dal.LazyReader

All Implemented Interfaces:

Reader

public class LazyReader
extends StandardReader

This class reads the examples on demand It gets as input a file with the paths to all the data and reads each example by the algorithm's demand

Constructor Summary

Constructors

Constructor and Description
LazyReader()

Method Summary

Methods

Modifier and Type	Method and Description
InstancesContainer	readData(java.lang.String path, java.lang.String dataSpliter, java.lang.String valueSpliter) a Lazy reader, it reads only the paths to the data and not the data itself this reader will read the actual data on demand
Example	readExample(java.util.ArrayList<java.lang.String> paths) read only one example and it's labels

Methods inherited from class com.structed.dal.StandardReader

readFile, readPathes

Methods inherited from class java.lang.Object

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

Constructor Detail

LazyReader

public LazyReader()

Method Detail

readData

public InstancesContainer readData(java.lang.String path,
                          java.lang.String dataSpliter,
                          java.lang.String valueSpliter)

a Lazy reader, it reads only the paths to the data and not the data itself this reader will read the actual data on demand

Specified by:

readData in interface Reader

Overrides:

readData in class StandardReader

Parameters:

path - the path to the data

dataSpliter - the splitter between the data values

valueSpliter - the separator between the index of the feature to the feature value

Returns:

an InstanceContainer object which contains all the data

readExample

public Example readExample(java.util.ArrayList<java.lang.String> paths)
                    throws java.lang.Exception

read only one example and it's labels

Parameters:

paths - the paths to the data and to the label files

Returns:

an Example object contains the data

Throws:

java.lang.Exception