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java.lang.Objectorg.apache.mahout.clustering.dirichlet.DirichletCluster
public class DirichletCluster
Nested Class Summary |
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Nested classes/interfaces inherited from interface org.apache.mahout.common.parameters.Parametered |
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Parametered.ParameteredGeneralizations |
Field Summary |
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Fields inherited from interface org.apache.mahout.clustering.Cluster |
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CLUSTERED_POINTS_DIR, CLUSTERS_DIR, FINAL_ITERATION_SUFFIX, INITIAL_CLUSTERS_DIR |
Fields inherited from interface org.apache.mahout.common.parameters.Parametered |
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log |
Constructor Summary | |
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DirichletCluster()
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DirichletCluster(Cluster model)
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DirichletCluster(Cluster model,
double totalCount)
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Method Summary | |
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String |
asFormatString(String[] bindings)
Produce a custom, human-friendly, printable representation of the Cluster. |
void |
computeParameters()
Compute a new set of posterior parameters based upon the Observations that have been observed since my creation |
void |
configure(org.apache.hadoop.conf.Configuration job)
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long |
count()
Return the number of observations that have been observed by this model |
void |
createParameters(String prefix,
org.apache.hadoop.conf.Configuration jobConf)
EXPERT: consumers should never have to call this method. |
Vector |
getCenter()
Get the "center" of the Cluster as a Vector |
int |
getId()
Get the id of the Cluster |
Cluster |
getModel()
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long |
getNumPoints()
Get an integer denoting the number of points observed by this cluster |
Collection<Parameter<?>> |
getParameters()
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Vector |
getRadius()
Get the "radius" of the Cluster as a Vector. |
double |
getTotalCount()
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boolean |
isConverged()
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void |
observe(Model<VectorWritable> x)
Observe the given model, retaining information about its observations |
void |
observe(VectorWritable x)
Observe the given observation, retaining information about it |
void |
observe(VectorWritable x,
double weight)
Observe the given observation, retaining information about it |
double |
pdf(VectorWritable x)
Return the probability that the observation is described by this model |
void |
readFields(DataInput in)
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static Cluster |
readModel(DataInput in)
Reads a typed Model instance from the input stream |
Model<VectorWritable> |
sampleFromPosterior()
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void |
setModel(Cluster model)
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void |
write(DataOutput out)
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static void |
writeModel(DataOutput out,
Model<?> model)
Writes a typed Model instance to the output stream |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public DirichletCluster(Cluster model, double totalCount)
public DirichletCluster(Cluster model)
public DirichletCluster()
Method Detail |
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public void configure(org.apache.hadoop.conf.Configuration job)
configure
in interface Parametered
public Collection<Parameter<?>> getParameters()
getParameters
in interface Parametered
public void createParameters(String prefix, org.apache.hadoop.conf.Configuration jobConf)
Parametered
Parametered.ParameteredGeneralizations
if java supported it. Calling this method should create a new list of
parameters and is called
createParameters
in interface Parametered
prefix
- ends with a dot if not empty.jobConf
- configuration used for retrieving valuesinvoking method
,
invoking method
public Cluster getModel()
public void setModel(Cluster model)
public double getTotalCount()
public void readFields(DataInput in) throws IOException
readFields
in interface org.apache.hadoop.io.Writable
IOException
public void write(DataOutput out) throws IOException
write
in interface org.apache.hadoop.io.Writable
IOException
public static void writeModel(DataOutput out, Model<?> model) throws IOException
IOException
public static Cluster readModel(DataInput in) throws IOException
IOException
public String asFormatString(String[] bindings)
Cluster
asFormatString
in interface Cluster
bindings
- an optional String[] containing labels used to format the primary
Vector/s of this implementation.
public int getId()
Cluster
getId
in interface Cluster
public Vector getCenter()
Cluster
getCenter
in interface Cluster
public long getNumPoints()
Cluster
getNumPoints
in interface Cluster
public Vector getRadius()
Cluster
getRadius
in interface Cluster
public void computeParameters()
Model
computeParameters
in interface Model<VectorWritable>
public long count()
Model
count
in interface Model<VectorWritable>
public void observe(VectorWritable x)
Model
observe
in interface Model<VectorWritable>
x
- an Observation from the posteriorpublic double pdf(VectorWritable x)
Model
pdf
in interface Model<VectorWritable>
x
- an Observation from the posterior
public Model<VectorWritable> sampleFromPosterior()
sampleFromPosterior
in interface Model<VectorWritable>
public void observe(VectorWritable x, double weight)
Model
observe
in interface Model<VectorWritable>
x
- an Observation from the posteriorweight
- a double weighting factorpublic boolean isConverged()
isConverged
in interface Cluster
public void observe(Model<VectorWritable> x)
Model
observe
in interface Model<VectorWritable>
x
- a Model<0>
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