Beispiel #1
0
        public void LoadValuesFor(NeuralNetwork neuralNetwork)
        {
            var firstLayerWeights = new ValueList<double>();
            var secondLayerWeights = new ValueList<double>();

            var secondLayerThresholds = new ValueList<double>();
            var thirdLayerThresholds = new ValueList<double>();

            try
            {
                var connection = new NpgsqlConnection(ConnectionString);
                connection.Open();
                var command = new NpgsqlCommand { Connection = connection };

                command.CommandText = "SELECT weight FROM pr4_weights_layer1 ORDER BY id ASC";
                var reader = command.ExecuteReader();

                while (reader.Read())
                    firstLayerWeights.Add(reader.GetDouble(0));

                reader.Close();
                command.CommandText = "SELECT weight FROM pr4_weights_layer2 ORDER BY id ASC";
                reader = command.ExecuteReader();

                while (reader.Read())
                    secondLayerWeights.Add(reader.GetDouble(0));

                reader.Close();
                command.CommandText = "SELECT threshold FROM pr4_thresholds_layer2 ORDER BY id ASC";
                reader = command.ExecuteReader();

                while (reader.Read())
                    secondLayerThresholds.Add(reader.GetDouble(0));

                reader.Close();
                command.CommandText = "SELECT threshold FROM pr4_thresholds_layer3 ORDER BY id ASC";
                reader = command.ExecuteReader();

                while (reader.Read())
                    thirdLayerThresholds.Add(reader.GetDouble(0));

                neuralNetwork.SetWeightsForLayer(1, firstLayerWeights);
                neuralNetwork.SetWeightsForLayer(2, secondLayerWeights);

                neuralNetwork.SetThresholdsForLayer(2, secondLayerThresholds);
                neuralNetwork.SetThresholdsForLayer(3, thirdLayerThresholds);
            }
            catch (Exception)
            {
                Console.WriteLine("There was a problem loading values from the database.");
                throw;
            }
        }