public void Train(ILabeledExampleCollection <LblT, ExT> dataset)
{
Preconditions.CheckNotNull(dataset);
var trainDataset = new LabeledDataset <LblT, ExT>(dataset);
for (int i = 0; i < mInnerModels.Length; i++)
{
if (mInnerModels[i] == null)
{
mInnerModels[i] = CreateModel(i);
}
mInnerModels[i].Train(GetTrainSet(i, mInnerModels[i], trainDataset));
}
foreach (LabeledExample <LblT, ExT> le in trainDataset)
{
LabeledExample <LblT, ExT> le_ = le;
string key = StringOf(mInnerModels.Select(m => m.Predict(le_.Example).BestClassLabel));
VotingEntry votingEntry = mVotingEntries[key];
votingEntry.LabelCounts[le.Label]++;
}
foreach (VotingEntry entry in mVotingEntries.Values)
{
PerformVoting(entry);
}
IsTrained = true;
}
public Prediction <LblT> Predict(ExT example)
{
Preconditions.CheckState(IsTrained);
string key = StringOf(mInnerModels.Select(m => m.Predict(example).BestClassLabel));
VotingEntry entry = mVotingEntries[key];
return(new Prediction <LblT>(new[] { new KeyDat <double, LblT>(1.0, entry.Label) }));
}
protected override void PerformVoting(VotingEntry votingEntry)
{
if (votingEntry.Entropy > 1)
{
votingEntry.Label = SentimentLabel.Neutral;
}
else
{
base.PerformVoting(votingEntry);
}
}
protected override void PerformVoting(VotingEntry votingEntry)
{
if (votingEntry.LabelProbs[SentimentLabel.Neutral] == votingEntry.LabelProbs[SentimentLabel.Negative] &&
votingEntry.LabelProbs[SentimentLabel.Negative] == votingEntry.LabelProbs[SentimentLabel.Positive])
//if (votingEntry.Entropy > 1)
{
votingEntry.Label = SentimentLabel.Neutral;
}
else
{
base.PerformVoting(votingEntry);
}
}
public override void ParseJObject(Object obj)
{
Voting voting = (obj as Voting);
JArray arr = (this.JsonObject as JArray);
voting.Glosy.Clear();
foreach (JObject item in arr)
{
IVotingEntry votingEntry = new VotingEntry();
votingEntry.Glos = item.Value <JObject> ("glosy").Value <int> ("glos_id");
votingEntry.Glosujacy = item.Value <JObject> ("poslowie").Value <int> ("id");
votingEntry.GlosujacyImieNazwisko = item.Value <JObject> ("poslowie").Value <string> ("nazwa");
votingEntry.MowcaId = item.Value <JObject> ("mowcy").Value <int> ("mowca_id");
voting.Glosy.Add(votingEntry);
}
}
protected virtual void PerformVoting(VotingEntry votingEntry)
{
votingEntry.Label = votingEntry.LabelCounts.OrderByDescending(kv => kv.Value).First().Key;
}
