Package org.palladiosimulator.reliability.solver.sensitivity

Class MarkovSensitivity

java.lang.Object
org.palladiosimulator.reliability.solver.sensitivity.MarkovSensitivity
Direct Known Subclasses:
ComponentSensitivity, FailureTypeSensitivity, InternalActionSensitivity, MTTFSensitivity, MTTRSensitivity, MultiSensitivity, NetworkSensitivity, ProbabilisticBranchSensitivity, ResourceMTTFSensitivity, ResourceMTTRSensitivity, SoftwareSensitivity, UsageBranchSensitivity, VariableUsageSensitivity
public abstract class MarkovSensitivity extends Object
Base class for (rudimentary) sensitivity analysis. Further refactorings required.

  • Field Details

    • LOGGER

      protected static final org.apache.log4j.Logger LOGGER
      A logger to give detailed information about the PCM instance transformation.

    • calculator

      protected SensitivityCalculator calculator
      A calculator for variations and steps during the sensitivity analysis.

    • helper

      protected EMFHelper helper
      Provides EMF utility functions.

    • logWriter

      protected BufferedWriter logWriter
      Provides a writer to the log file.

    • model

      protected org.palladiosimulator.solver.models.PCMInstance model
      The model on which sensitivity analysis is based.

    • name

      protected String name
      The name of this sensitivity (for logging).

    • numberOfSteps

      protected int numberOfSteps
      The number of steps to take during sensitivity analysis.

  • Constructor Details

    • MarkovSensitivity

      protected MarkovSensitivity(String name, SensitivityParameterVariation variation)
      The constructor. Only to be invoked by concrete sub classes.
      Parameters:
      name - the name of the sensitivity analysis
      variation - the parameter variation

  • Method Details

    • alterModel

      protected abstract boolean alterModel()
      Alters the model according to the next sensitivity analysis step.
      Returns:
      indicates if the model could be successfully altered

    • extractSensitivityInformation

      protected abstract void extractSensitivityInformation()
      Extracts the relevant sensitivity information from the given model.

    • finalize

      public void finalize()
      Finalizes the sensitivity analysis.
      Overrides:
      finalize in class Object

    • getCurrentStepNumber

      protected int getCurrentStepNumber()
      Retrieves the current step number.
      Returns:
      the current step number

    • getDoubleVariation

      protected DoubleParameterVariation getDoubleVariation()
      Returns the double parameter variation.
      Returns:
      the double parameter variation

    • getLogHeadingsMulti

      protected abstract List<List<String>> getLogHeadingsMulti()
      Builds the headings strings for logging.
      Returns:
      the log headings strings

    • getLogSingleResults

      protected List<String> getLogSingleResults(List<MarkovTransformationResult> markovResults)
      Builds the results strings for sensitivity logging.
      Parameters:
      markovResults - the Markov transformation results
      Returns:
      the results strings

    • getLogSingleResultsMulti

      protected abstract List<String> getLogSingleResultsMulti()
      Builds the results string for sensitivity logging.
      Returns:
      the results strings

    • getModel

      protected org.palladiosimulator.solver.models.PCMInstance getModel()
      Retrieves the PCM instance.
      Returns:
      the PCM instance

    • getNextModel

      public org.palladiosimulator.solver.models.PCMInstance getNextModel()
      Retrieves the model to be used for the next step in the sensitivity analysis.
      Returns:
      the model

    • getStringSequence

      protected StringParameterSequence getStringSequence()
      Returns the string parameter sequence.
      Returns:
      the string parameter sequence

    • increaseCurrentStepNumber

      protected boolean increaseCurrentStepNumber()
      Increases the current step number.
      Returns:
      indicates an overflow

    • initialize

      public void initialize(org.palladiosimulator.solver.models.PCMInstance model)
      Initializes the sensitivity analysis.
      Parameters:
      model - the PCM instance

    • logResults

      public void logResults(List<MarkovTransformationResult> markovResults)
      Logs the results of the current sensitivity analysis step.
      Parameters:
      markovResults - the markov transformation results

    • resetCurrentStepNumber

      protected void resetCurrentStepNumber()
      Resets the current step number.

    • setLogFileName

      public void setLogFileName(String logFileName)
      Sets the result log file name.
      Parameters:
      logFileName - the log file name

    • setModel

      protected void setModel(org.palladiosimulator.solver.models.PCMInstance model)
      Sets the PCM instance.
      Parameters:
      model - the PCM instance

    • setResultSpecifications

      public void setResultSpecifications(EList<SensitivityResultSpecification> resultSpecifications)
      Specifies the relevant Markov analysis results.
      Parameters:
      resultSpecifications - specification of results