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java.lang.Objectorg.apache.mahout.classifier.df.DFUtils
public final class DFUtils
Utility class that contains various helper methods
Method Summary | |
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static String |
elapsedTime(long milli)
Formats a time interval in milliseconds to a String in the form "hours:minutes:seconds:millis" |
static org.apache.hadoop.fs.Path[] |
listOutputFiles(org.apache.hadoop.fs.FileSystem fs,
org.apache.hadoop.fs.Path outputPath)
Return a list of all files in the output directory |
static double[] |
readDoubleArray(DataInput in)
Reads a double[] from a DataInput |
static int[] |
readIntArray(DataInput in)
Reads an int[] from a DataInput |
static Node[] |
readNodeArray(DataInput in)
Reads a Node[] from a DataInput |
static void |
storeWritable(org.apache.hadoop.conf.Configuration conf,
org.apache.hadoop.fs.Path path,
org.apache.hadoop.io.Writable writable)
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static void |
writeArray(DataOutput out,
double[] array)
Writes a double[] into a DataOutput |
static void |
writeArray(DataOutput out,
int[] array)
Writes an int[] into a DataOutput |
static void |
writeArray(DataOutput out,
Node[] array)
Writes an Node[] into a DataOutput |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public static void writeArray(DataOutput out, Node[] array) throws IOException
IOException
public static Node[] readNodeArray(DataInput in) throws IOException
IOException
public static void writeArray(DataOutput out, double[] array) throws IOException
IOException
public static double[] readDoubleArray(DataInput in) throws IOException
IOException
public static void writeArray(DataOutput out, int[] array) throws IOException
IOException
public static int[] readIntArray(DataInput in) throws IOException
IOException
public static org.apache.hadoop.fs.Path[] listOutputFiles(org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path outputPath) throws IOException
IOException
- if no file is foundpublic static String elapsedTime(long milli)
public static void storeWritable(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.Path path, org.apache.hadoop.io.Writable writable) throws IOException
IOException
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