public override void Evaluate(Split split, EvaluationContext context)
{
if (DataType == DataType.Ratings)
{
var results = new Dictionary <string, string>();
results.Add("LibFmTrainRMSE", string.Format("{0:0.0000}", _trainRmse));
results.Add("LibFmTestRMSE", string.Format("{0:0.0000}", _testRmse));
results.Add("LibFmLowestRMSE", string.Format("{0:0.0000}", _lowestTestRmse));
results.Add("LowestIteration", _lowestIter.ToString());
context.AddResultsSet("libfm", results);
// test split and tested predictions (in the file) have the same order
List <float> testPredictions = File.ReadAllLines(_outputPath).Select(l => float.Parse(l)).ToList();
int i = 0;
foreach (var feedback in split.Test)
{
// no need to call Predict(feedback) becuase the predictions are already saved in the output file
context.PredictedScores.Add(feedback, testPredictions[i++]);
}
}
PureEvaluationTime = (int)Wrap.MeasureTime(delegate()
{
context.Evaluators.ForEach(e => e.Evaluate(context, this, split));
}).TotalMilliseconds;
}
