/// <summary>
/// get requery text.
/// </summary>
/// <param name="qnastatus">qnastatus.</param>
/// <param name="activityText">activity text.</param>
/// <param name="activeLearningdata">activeleraning data.</param>
/// <returns></returns>
public static string GetRequery(ShowQnAResultState qnastatus, string activityText, ActiveLearningDTO activeLearningdata = null)
{
string requery = null;
if (qnastatus.QnaAnswer.Options != null && qnastatus.QnaAnswer.Options.Count != 0)
{
foreach (var promptoption in qnastatus.QnaAnswer.Options)
{
if (promptoption.Option.Equals(activityText, StringComparison.CurrentCultureIgnoreCase))
{
requery = string.IsNullOrEmpty(promptoption.Requery) ? promptoption.Option : promptoption.Requery;
// call train API if active learning
if (qnastatus.ActiveLearningAnswer == true && activeLearningdata != null)
{
qnastatus.ActiveLearningAnswer = false;
activeLearningdata.qnaId = promptoption.QnAId;
ActiveLearning.CallTrainApi(activeLearningdata);
qnastatus.ActiveLearningUserQuestion = null;
}
break;
}
}
}
else
{
requery = string.IsNullOrEmpty(qnastatus.QnaAnswer.Requery) ? null : qnastatus.QnaAnswer.Requery;
}
return(requery);
}
/// <summary>
/// Runs the active learning experiment presented in Venanzi et.al (WWW14) on a single data set.
/// </summary>
/// <param name="dataSet">The data.</param>
/// <param name="runType">The model run type.</param>
/// <param name="taskSelectionMethod">The method for selecting tasks (Random / Entropy).</param>
/// <param name="model">The model instance.</param>
/// <param name="communityCount">The number of communities (only for CBCC).</param>
public static void RunHCOMPActiveLearning(string dataSet, RunType runType, TaskSelectionMethod taskSelectionMethod, int InitialNumLabelsPerTask, BCC model, int communityCount = 4)
{
var data = Datum.LoadData(@"Data/" + dataSet + ".csv");
string modelName = Program.GetModelName(dataSet, runType, taskSelectionMethod, WorkerSelectionMethod.RandomWorker);
//initial Number of Label Per Task
//int initialNumLabelsPerTask = 1;
int initialNumLabelsPerTask = InitialNumLabelsPerTask;
ActiveLearning.RunActiveLearning(data, modelName, runType, model, taskSelectionMethod, WorkerSelectionMethod.RandomWorker, ResultsDir, communityCount, initialNumLabelsPerTask);
}
private QueryResult HandleActiveLearning(QueryResult[] response, ShowQnAResultState qnaStatus, string userQuestion)
{
var filteredResponse = response.Where(answer => answer.Score > Constants.DefaultThreshold).ToList();
var responseCandidates = ActiveLearning.GetLowScoreVariation(filteredResponse);
if (responseCandidates.Count > 1)
{
var activeLearningResponse = ActiveLearning.GenerateResponse(responseCandidates);
qnaStatus.ActiveLearningAnswer = true;
qnaStatus.ActiveLearningUserQuestion = userQuestion;
return(activeLearningResponse);
}
return(responseCandidates[0]);
}
/// <summary>
/// Background Thread for running the active learning experiment
/// <param name="worker"></param>
/// <param name="e"></param>
public void RunParallelActiveLearning(
System.ComponentModel.BackgroundWorker worker,
System.ComponentModel.DoWorkEventArgs e)
{
//Create a state of the Thread
CurrentParallelState currentState = new CurrentParallelState();
//Set setting in the experimentSetting Class
int totalNumberOfModels = GetNumberOfExperiemntModels();
//Clear previous results
ActiveLearning.ResetParallelAccuracyList(totalNumberOfModels);
//obtain the accuracy list reference
accuracyArrayOfAllExperimentModels = ActiveLearning.accuracyArray;
//The RunTypes that have Worker Confusion Matrices
RunType[] runTypesHaveWorkerMatrices = { RunType.DawidSkene, RunType.BCC, RunType.CBCC };
//Set the models selected in the setting pane
string[] currentModelNames = new string[totalNumberOfModels];
RunType[] currentRunTypes = new RunType[totalNumberOfModels];
TaskSelectionMethod[] currentTaskSelectionMethods = new TaskSelectionMethod[totalNumberOfModels];
WorkerSelectionMethod[] currentWorkerSelectionMethods = new WorkerSelectionMethod[totalNumberOfModels];
BCC[] currentBCCModels = new BCC[totalNumberOfModels];
//for each ExperimentModel, set runTypeArray, taskSelectionMethodArray, workerSelectionMethodArray...
for (int i = 0; i < totalNumberOfModels; i++)
{
ExperimentModel currentExperimentModel = GetExperimentModel(i);
RunType currentRunType = currentExperimentModel.runType;
currentRunTypes[i] = currentRunType;
//set the task selection method
currentTaskSelectionMethods[i] = currentExperimentModel.taskSelectionMethod;
//Add into worker selection method array if the runType can have worker selection
if (runTypesHaveWorkerMatrices.Contains(currentRunType))
{
currentWorkerSelectionMethods[i] = currentExperimentModel.WorkerSelectionMethod;
//Add corresponding model
//if the RunType is BCC, add into BCC model array
if (currentRunType == RunType.BCC)
{
currentBCCModels[i] = new BCC();
}//CBCC Model
else if (currentRunType == RunType.CBCC)
{
CBCC currentBCCmodel = new CBCC();
currentBCCModels[i] = currentBCCmodel;
}
} //end if the runType has worker confusion matrices
} //end for
currentModelNames = currentModelNames.Select((s, i) => CrowdsourcingModels.Program.GetModelName(currentDataset.GetDataSetNameWithoutExtension(), currentRunTypes[i])).ToArray();
//run RunParallelActiveLearning in the ActiveLearning
ActiveLearning.RunParallelActiveLearning(currentDataset.LoadData(), currentModelNames, currentRunTypes,
currentBCCModels, currentTaskSelectionMethods, currentWorkerSelectionMethods,
communityCount, numberOfLabellingRound);
currentState.isRunningComplete = true;
Debug.WriteLine("RunParallelActiveLearning Complete");
//isSimulationComplete = true;
//worker.ReportProgress(0, currentState);
}//end function RunParallelActiveLearning
