| 55 | raise NotImplementedError |
| 56 | |
| 57 | class SGD(Update): |
| 58 | |
| 59 | def __init__(self, lr=0.01, *args, **kwargs): |
| 60 | Update.__init__(self, *args, **kwargs) |
| 61 | self.__dict__.update(locals()) |
| 62 | |
| 63 | def __call__(self, params, cost): |
| 64 | updates = [] |
| 65 | grads = T.grad(cost, params) |
| 66 | grads = clip_norms(grads, self.clipnorm) |
| 67 | for p,g in zip(params,grads): |
| 68 | g = self.regularizer.gradient_regularize(p, g) |
| 69 | updated_p = p - self.lr * g |
| 70 | updated_p = self.regularizer.weight_regularize(updated_p) |
| 71 | updates.append((p, updated_p)) |
| 72 | return updates |
| 73 | |
| 74 | class Momentum(Update): |
| 75 |
nothing calls this directly
no outgoing calls
no test coverage detected