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DL-C02-C-001

Substitute the values into wx + b.

DL-C02-C-002

theta is the usual compact symbol for parameters.

DL-C02-C-003

First compute (12, 5) x (5, 4). Then add the bias.

DL-C02-C-004

The hat usually marks the model's estimate or prediction.

DL-C02-C-005

Use prediction minus target.

DL-C02-C-006

The architecture defines the family. The parameters choose within it.