def setup(self, m=2, r=2, window_size=20, batch_size=1, hidden_layer_sizes=[10], pretrain_step=20):
self.bed = TestBed(
m=m, r=r, window_size=window_size, batch_size=batch_size, hidden_layers_sizes=hidden_layer_sizes
)
self.gen = SimpleGenerator(num=m)
self.pretrain_step = pretrain_step
# fill the window with data
for i in xrange(window_size):
y = self.gen.next()
self.bed.supply(y)
class Worker(QtCore.QThread):
started = QtCore.Signal()
updated = QtCore.Signal()
stopped = QtCore.Signal()
def __init__(self, vis, parent=None):
super(Worker, self).__init__(parent)
self.bed = None
self.gen = None
self.vis = vis
self.stop_flg = False
self.mutex = QtCore.QMutex()
pass
def setup(self, m=2, r=2, window_size=20, batch_size=1, hidden_layer_sizes=[10], pretrain_step=20):
self.bed = TestBed(
m=m, r=r, window_size=window_size, batch_size=batch_size, hidden_layers_sizes=hidden_layer_sizes
)
self.gen = SimpleGenerator(num=m)
self.pretrain_step = pretrain_step
# fill the window with data
for i in xrange(window_size):
y = self.gen.next()
self.bed.supply(y)
def setGeneratorParams(self, k, n):
if self.gen is not None:
self.gen.setK(k)
self.gen.setN(n)
def setDelay(self, delay):
self.delay = delay
def setLearningParams(self, params):
self.pretrain_epochs = params["pretrain_epochs"]
self.pretrain_lr = params["pretrain_lr"]
self.finetune_epochs = params["finetune_epochs"]
self.finetune_lr = params["finetune_lr"]
def stop(self):
with QtCore.QMutexLocker(self.mutex):
self.stop_flg = True
def run(self):
with QtCore.QMutexLocker(self.mutex):
self.stop_flg = False
self.started.emit()
for i, y in enumerate(self.gen):
if i % self.pretrain_step == 0:
# pretrain
avg_cost = self.bed.pretrain(self.pretrain_epochs, pretraining_lr=self.pretrain_lr)
print(" pretrain cost: {}".format(avg_cost))
# predict
y_pred = self.bed.predict()
print("{}: y={}, y_pred={}".format(i, y, y_pred))
self.vis.append(y, y_pred)
# finetune
self.bed.supply(y)
avg_cost = self.bed.finetune(self.finetune_epochs, finetunning_lr=self.finetune_lr)
# bed.finetune(100, finetunning_lr=0.01)
# bed.finetune(100, finetunning_lr=0.001)
print(" train cost: {}".format(avg_cost))
time.sleep(self.delay)
self.updated.emit()
if self.stop_flg:
print(" --- iteration end ---")
break
self.stopped.emit()