org.knime.base.node.mine.svm.learner
Class SVMLearnerNodeModel

java.lang.Object
  extended by org.knime.core.node.NodeModel
      extended by org.knime.base.node.mine.svm.learner.SVMLearnerNodeModel

public class SVMLearnerNodeModel
extends NodeModel

Author:
cebron, University of Konstanz

Field Summary
static String CFG_CLASSCOL
          Key to store the class column in the NodeSettings.
static String CFG_KERNELPARAM
          Key to store kernel parameters in the NodeSettings ATTENTION: this key name is used together with an index.
static String CFG_KERNELTYPE
          Key to store the kernel type in the NodeSettings.
static String CFG_PARAMC
          Key to store the parameter c in the NodeSettings.
static double DEFAULT_PARAMC
          Default c parameter.
static String KEY_CATEG_COUNT
          Keys under which to save the parameters.
static String KEY_CLASSCOL
          Key to save the DataTableSpec .
static String KEY_SPEC
          key to save the DataTableSpec .
 
Constructor Summary
SVMLearnerNodeModel()
           
 
Method Summary
protected  PortObjectSpec[] configure(PortObjectSpec[] inSpecs)
          Configure method for general port types.
(package private) static LinkedHashMap<KernelFactory.KernelType,Vector<SettingsModelDouble>> createKernelParams()
          creates the kernel parameter SettingsModels.
protected  PortObject[] execute(PortObject[] inData, ExecutionContext exec)
          Execute method for general port types.
(package private)  String getSVMInfos()
           
protected  void loadInternals(File nodeInternDir, ExecutionMonitor exec)
          Load internals into the derived NodeModel.
protected  void loadValidatedSettingsFrom(NodeSettingsRO settings)
          Sets new settings from the passed object in the model.
protected  void reset()
          Override this function in the derived model and reset your NodeModel.
protected  void saveInternals(File nodeInternDir, ExecutionMonitor exec)
          Save internals of the derived NodeModel.
protected  void saveSettingsTo(NodeSettingsWO settings)
          Adds to the given NodeSettings the model specific settings.
protected  void validateSettings(NodeSettingsRO settings)
          Validates the settings in the passed NodeSettings object.
 
Methods inherited from class org.knime.core.node.NodeModel
addWarningListener, configure, continueLoop, execute, executeModel, getInHiLiteHandler, getLoopEndNode, getLoopStartNode, getNrInPorts, getNrOutPorts, getOutHiLiteHandler, getWarningMessage, notifyViews, notifyWarningListeners, peekFlowVariableDouble, peekFlowVariableInt, peekFlowVariableString, peekScopeVariableDouble, peekScopeVariableInt, peekScopeVariableString, pushFlowVariableDouble, pushFlowVariableInt, pushFlowVariableString, pushScopeVariableDouble, pushScopeVariableInt, pushScopeVariableString, removeWarningListener, setInHiLiteHandler, setWarningMessage, stateChanged
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

CFG_PARAMC

public static final String CFG_PARAMC
Key to store the parameter c in the NodeSettings.

See Also:
Constant Field Values

CFG_CLASSCOL

public static final String CFG_CLASSCOL
Key to store the class column in the NodeSettings.

See Also:
Constant Field Values

CFG_KERNELPARAM

public static final String CFG_KERNELPARAM
Key to store kernel parameters in the NodeSettings ATTENTION: this key name is used together with an index. So the i'th parameter will be in KEY_KERNELPARAM + i.toString()

See Also:
Constant Field Values

CFG_KERNELTYPE

public static final String CFG_KERNELTYPE
Key to store the kernel type in the NodeSettings.

See Also:
Constant Field Values

KEY_CATEG_COUNT

public static final String KEY_CATEG_COUNT
Keys under which to save the parameters.

See Also:
Constant Field Values

KEY_SPEC

public static final String KEY_SPEC
key to save the DataTableSpec .

See Also:
Constant Field Values

KEY_CLASSCOL

public static final String KEY_CLASSCOL
Key to save the DataTableSpec .

See Also:
Constant Field Values

DEFAULT_PARAMC

public static final double DEFAULT_PARAMC
Default c parameter.

See Also:
Constant Field Values
Constructor Detail

SVMLearnerNodeModel

public SVMLearnerNodeModel()
Method Detail

createKernelParams

static LinkedHashMap<KernelFactory.KernelType,Vector<SettingsModelDouble>> createKernelParams()
creates the kernel parameter SettingsModels.

Returns:
HashMap containing the kernel and its assigned SettingsModels.

configure

protected PortObjectSpec[] configure(PortObjectSpec[] inSpecs)
                              throws InvalidSettingsException
Configure method for general port types. The argument specs represent the input object specs and are guaranteed to be subclasses of the PortObjectSpecs that are defined through the PortTypes given in the constructor. Similarly, the returned output specs need to comply with their port types spec class (otherwise an error is reported by the framework). They may also be null.

For a general description of the configure method refer to the description of the specialized NodeModel.configure(DataTableSpec[]) methods as it addresses more use cases.

Overrides:
configure in class NodeModel
Parameters:
inSpecs - The input object specs.
Returns:
The output objects specs or null.
Throws:
InvalidSettingsException - If this node can't be configured.

execute

protected PortObject[] execute(PortObject[] inData,
                               ExecutionContext exec)
                        throws Exception
Execute method for general port types. The argument objects represent the input objects and are guaranteed to be subclasses of the PortObject classes that are defined through the PortTypes given in the constructor. Similarly, the returned output objects need to comply with their port types object class (otherwise an error is reported by the framework).

For a general description of the execute method refer to the description of the specialized NodeModel.execute(BufferedDataTable[], ExecutionContext) methods as it addresses more use cases.

Overrides:
execute in class NodeModel
Parameters:
inData - The input objects.
exec - For BufferedDataTable creation and progress.
Returns:
The output objects.
Throws:
Exception - If the node execution fails for any reason.

loadInternals

protected void loadInternals(File nodeInternDir,
                             ExecutionMonitor exec)
                      throws IOException,
                             CanceledExecutionException
Load internals into the derived NodeModel. This method is only called if the Node was executed. Read all your internal structures from the given file directory to create your internal data structure which is necessary to provide all node functionalities after the workflow is loaded, e.g. view content and/or hilite mapping.

Specified by:
loadInternals in class NodeModel
Parameters:
nodeInternDir - The directory to read from.
exec - Used to report progress and to cancel the load process.
Throws:
IOException - If an error occurs during reading from this dir.
CanceledExecutionException - If the loading has been canceled.
See Also:
NodeModel.saveInternals(File,ExecutionMonitor)

loadValidatedSettingsFrom

protected void loadValidatedSettingsFrom(NodeSettingsRO settings)
                                  throws InvalidSettingsException
Sets new settings from the passed object in the model. You can safely assume that the object passed has been successfully validated by the #validateSettings(NodeSettings) method. The model must set its internal configuration according to the settings object passed.

Specified by:
loadValidatedSettingsFrom in class NodeModel
Parameters:
settings - The settings to read.
Throws:
InvalidSettingsException - If a property is not available.
See Also:
NodeModel.saveSettingsTo(NodeSettingsWO), NodeModel.validateSettings(NodeSettingsRO)

reset

protected void reset()
Override this function in the derived model and reset your NodeModel. All components should unregister themselves from any observables (at least from the hilite handler right now). All internally stored data structures should be released. User settings should not be deleted/reset though.

Specified by:
reset in class NodeModel

saveInternals

protected void saveInternals(File nodeInternDir,
                             ExecutionMonitor exec)
                      throws IOException,
                             CanceledExecutionException
Save internals of the derived NodeModel. This method is only called if the Node is executed. Write all your internal structures into the given file directory which are necessary to recreate this model when the workflow is loaded, e.g. view content and/or hilite mapping.

Specified by:
saveInternals in class NodeModel
Parameters:
nodeInternDir - The directory to write into.
exec - Used to report progress and to cancel the save process.
Throws:
IOException - If an error occurs during writing to this dir.
CanceledExecutionException - If the saving has been canceled.
See Also:
NodeModel.loadInternals(File,ExecutionMonitor)

getSVMInfos

String getSVMInfos()
Returns:
a string containing all SVM infos in HTML for the view.

saveSettingsTo

protected void saveSettingsTo(NodeSettingsWO settings)
Adds to the given NodeSettings the model specific settings. The settings don't need to be complete or consistent. If, right after startup, no valid settings are available this method can write either nothing or invalid settings.

Method is called by the Node if the current settings need to be saved or transfered to the node's dialog.

Specified by:
saveSettingsTo in class NodeModel
Parameters:
settings - The object to write settings into.
See Also:
NodeModel.loadValidatedSettingsFrom(NodeSettingsRO), NodeModel.validateSettings(NodeSettingsRO)

validateSettings

protected void validateSettings(NodeSettingsRO settings)
                         throws InvalidSettingsException
Validates the settings in the passed NodeSettings object. The specified settings should be checked for completeness and consistency. It must be possible to load a settings object validated here without any exception in the #loadValidatedSettings(NodeSettings) method. The method must not change the current settings in the model - it is supposed to just check them. If some settings are missing, invalid, inconsistent, or just not right throw an exception with a message useful to the user.

Specified by:
validateSettings in class NodeModel
Parameters:
settings - The settings to validate.
Throws:
InvalidSettingsException - If the validation of the settings failed.
See Also:
NodeModel.saveSettingsTo(NodeSettingsWO), NodeModel.loadValidatedSettingsFrom(NodeSettingsRO)


Copyright, 2003 - 2010. All rights reserved.
University of Konstanz, Germany.
Chair for Bioinformatics and Information Mining, Prof. Dr. Michael R. Berthold.
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