public void Request(AnalysisExecutionContext context)
{
_context = context;
if (context.Results.Count <= 0)
{
context.OnExecutionProgress("MechanicalTurk", new AnalysisExecutionProgressEventArgs(AnalysisExecutionStatus.Canceled, 0, 0, 0));
return;
}
if (!context.Results.Values.First().GetServices().Contains("MechanicalTurk"))
{
context.OnExecutionProgress("MechanicalTurk", new AnalysisExecutionProgressEventArgs(AnalysisExecutionStatus.Canceled, 0, 0, 0));
return;
}
MechanicalTurkSettings settings = context.CustomField as MechanicalTurkSettings;
if (settings == null)
{
settings = new MechanicalTurkSettings(null, 3, new decimal(0.10), 300, 1800, 75);
}
string key = context.Key;
string secret = context.Secret;
MTurkConfig config = new MTurkConfig(_serviceURL, key, secret);
SimpleClient client = new SimpleClient(config);
int failed = 0;
int processed = 0;
try
{
foreach (KeyValuePair <string, ResultSet> document in context.Results)
{
string id = document.Value.GetPolarity("MechanicalTurk");
double count = document.Value.GetScore("MechanicalTurk");
count = (double.IsNaN(count)) ? 0 : count;
if (id == "negative" || id == "neutral" || id == "positive" || id == "failed" || id == "undefined")
{
continue;
}
IList <Assignment> assignments = null;
if (context.UseDebugMode)
{
TimeSpan time = TimeSpan.Zero;
assignments = BenchmarkHelper.Invoke(new InvokeBenchmarkHandler(delegate(object state)
{
return(client.GetAssignmentsForHIT(id, 1, true));
}), null, out time) as IList <Assignment>;
Console.WriteLine("MechanicalTurk: Answers for {0} HIT have been received. Execution time is: {1}", id, time.TotalMilliseconds);
}
else
{
assignments = client.GetAssignmentsForHIT(id, 1, true);
}
if (assignments.Count < count)
{
processed++;
continue;
}
double confidence = 0;
IList <string> answers = DeserializeAnswers(assignments);
string polarity = MergeSentimentPolarity(answers, out confidence);
processed++;
document.Value.AddOutput("MechanicalTurk", double.NaN, polarity, confidence);
document.Value.AddReferencePolarity(polarity, "MechanicalTurk");
AnalysisExecutionProgressEventArgs e = new AnalysisExecutionProgressEventArgs(AnalysisExecutionStatus.Processed, context.Results.Count, processed, failed);
context.OnExecutionProgress("MechanicalTurk", e);
if (e.Cancel)
{
break;
}
}
}
catch (Exception ex)
{
failed++;
AnalysisExecutionProgressEventArgs ea = new AnalysisExecutionProgressEventArgs(AnalysisExecutionStatus.Failed, context.Results.Count, processed, failed);
ea.Reason = ex.Message;
context.OnExecutionProgress("MechanicalTurk", ea);
if (ea.Cancel)
{
return;
}
}
context.OnExecutionProgress("MechanicalTurk", new AnalysisExecutionProgressEventArgs(AnalysisExecutionStatus.Success, context.Results.Count, processed, failed));
}