org.apache.mahout.ga.watchmaker.cd.hadoop
Class CDMapper
java.lang.Object
org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable,CDFitness>
org.apache.mahout.ga.watchmaker.cd.hadoop.CDMapper
public class CDMapper
- extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable,CDFitness>
Hadoop Mapper. Evaluate all the rules with the input data line.
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper |
org.apache.hadoop.mapreduce.Mapper.Context |
Method Summary |
static CDFitness |
evaluate(int target,
int prediction,
int label)
Evaluate a given prediction. |
protected void |
map(org.apache.hadoop.io.LongWritable key,
org.apache.hadoop.io.Text value,
org.apache.hadoop.mapreduce.Mapper.Context context)
|
protected void |
setup(org.apache.hadoop.mapreduce.Mapper.Context context)
|
Methods inherited from class org.apache.hadoop.mapreduce.Mapper |
cleanup, run |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
CLASSDISCOVERY_RULES
public static final String CLASSDISCOVERY_RULES
- See Also:
- Constant Field Values
CLASSDISCOVERY_DATASET
public static final String CLASSDISCOVERY_DATASET
- See Also:
- Constant Field Values
CLASSDISCOVERY_TARGET_LABEL
public static final String CLASSDISCOVERY_TARGET_LABEL
- See Also:
- Constant Field Values
CDMapper
public CDMapper()
map
protected void map(org.apache.hadoop.io.LongWritable key,
org.apache.hadoop.io.Text value,
org.apache.hadoop.mapreduce.Mapper.Context context)
throws IOException,
InterruptedException
- Overrides:
map
in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable,CDFitness>
- Throws:
IOException
InterruptedException
setup
protected void setup(org.apache.hadoop.mapreduce.Mapper.Context context)
throws IOException,
InterruptedException
- Overrides:
setup
in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable,CDFitness>
- Throws:
IOException
InterruptedException
evaluate
public static CDFitness evaluate(int target,
int prediction,
int label)
- Evaluate a given prediction.
- Parameters:
target
- expected labelprediction
- label
- actual label
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