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Feb 19th, 2019
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  1. public void BuildAndFit(string trainingDataViewLocation)
  2. {
  3. IDataView trainingDataView = _textLoader.Read(trainingDataViewLocation);
  4.  
  5. var pipeline = _mlContext.Transforms.CopyColumns(inputColumnName: "Count", outputColumnName: "Label")
  6. .Append(_mlContext.Transforms.Categorical.OneHotEncoding("Season"))
  7. .Append(_mlContext.Transforms.Categorical.OneHotEncoding("Year"))
  8. .Append(_mlContext.Transforms.Categorical.OneHotEncoding("Month"))
  9. .Append(_mlContext.Transforms.Categorical.OneHotEncoding("Hour"))
  10. .Append(_mlContext.Transforms.Categorical.OneHotEncoding("Holiday"))
  11. .Append(_mlContext.Transforms.Categorical.OneHotEncoding("Weather"))
  12. .Append(_mlContext.Transforms.Concatenate("Features",
  13. "Season",
  14. "Year",
  15. "Month",
  16. "Hour",
  17. "Weekday",
  18. "Weather",
  19. "Temperature",
  20. "NormalizedTemperature",
  21. "Humidity",
  22. "Windspeed"))
  23. .AppendCacheCheckpoint(_mlContext)
  24. .Append(_algorythim);
  25.  
  26. _trainedModel = pipeline.Fit(trainingDataView);
  27. _predictionEngine = _trainedModel.CreatePredictionEngine<BikeSharingDemandSample, BikeSharingDemandPrediction>(_mlContext);
  28. }
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