| 36 | } |
| 37 | |
| 38 | double Optimizer::get_loss() |
| 39 | { |
| 40 | var value = m_cost_function.getRoot(); |
| 41 | eval(value,1); |
| 42 | if (_is_scalar(value)) |
| 43 | { |
| 44 | return _sval(value); |
| 45 | } |
| 46 | else |
| 47 | { |
| 48 | throw std::invalid_argument("not match"); |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | VanillaGradientDescentOptimizer::VanillaGradientDescentOptimizer( |
| 53 | var cost_function, |