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33 lines
885 B
Transact-SQL
33 lines
885 B
Transact-SQL
use taxidata
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go
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CREATE PROCEDURE [dbo].[TrainTipPredictionModel]
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AS
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BEGIN
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DECLARE @inquery nvarchar(max) = N'
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select tipped, passenger_count, trip_time_in_secs, trip_distance, direct_distance
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from nyctaxi_features
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'
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--delete previous stored models
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truncate table dbo.nyc_taxi_models
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-- Insert the trained model into a database table
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INSERT INTO nyc_taxi_models
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EXEC sp_execute_external_script
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@language = N'R',
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@script = N'
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## Create model
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logitObj <- rxLogit(tipped ~ passenger_count + trip_distance + trip_time_in_secs + direct_distance, data = InputDataSet)
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## Serialize model and put it in data frame
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trained_model <- data.frame(model=as.raw(serialize(logitObj, NULL)));
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',
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@input_data_1 = @inquery,
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@output_data_1_name = N'trained_model'
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;
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END
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GO |