CNNCreator_torcs_agent_torcsAgent_dqn.py 2.23 KB
Newer Older
1 2 3
import mxnet as mx
import logging
import os
Nicola Gatto's avatar
Nicola Gatto committed
4
from CNNNet_torcs_agent_torcsAgent_dqn import Net_0
5 6 7 8 9 10 11

class CNNCreator_torcs_agent_torcsAgent_dqn:
    _model_dir_ = "model/torcs.agent.dqn.TorcsDQN/"
    _model_prefix_ = "model"

    def __init__(self):
        self.weight_initializer = mx.init.Normal()
Nicola Gatto's avatar
Nicola Gatto committed
12
        self.networks = {}
13 14

    def load(self, context):
Nicola Gatto's avatar
Nicola Gatto committed
15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
        earliestLastEpoch = None

        for i, network in self.networks.items():
            lastEpoch = 0
            param_file = None

            try:
                os.remove(self._model_dir_ + self._model_prefix_ + "_" + str(i) + "_newest-0000.params")
            except OSError:
                pass
            try:
                os.remove(self._model_dir_ + self._model_prefix_ + "_" + str(i) + "_newest-symbol.json")
            except OSError:
                pass

            if os.path.isdir(self._model_dir_):
                for file in os.listdir(self._model_dir_):
                    if ".params" in file and self._model_prefix_ + "_" + str(i) in file:
                        epochStr = file.replace(".params","").replace(self._model_prefix_ + "_" + str(i) + "-","")
                        epoch = int(epochStr)
                        if epoch > lastEpoch:
                            lastEpoch = epoch
                            param_file = file
            if param_file is None:
                earliestLastEpoch = 0
            else:
                logging.info("Loading checkpoint: " + param_file)
                network.load_parameters(self._model_dir_ + param_file)

                if earliestLastEpoch == None or lastEpoch < earliestLastEpoch:
                    earliestLastEpoch = lastEpoch

        return earliestLastEpoch
48 49

    def construct(self, context, data_mean=None, data_std=None):
Nicola Gatto's avatar
Nicola Gatto committed
50 51 52
        self.networks[0] = Net_0(data_mean=data_mean, data_std=data_std)
        self.networks[0].collect_params().initialize(self.weight_initializer, ctx=context)
        self.networks[0].hybridize()
Sebastian Nickels's avatar
Sebastian Nickels committed
53
        self.networks[0](mx.nd.zeros((1,5,), ctx=context))
54 55 56 57

        if not os.path.exists(self._model_dir_):
            os.makedirs(self._model_dir_)

Nicola Gatto's avatar
Nicola Gatto committed
58 59
        for i, network in self.networks.items():
            network.export(self._model_dir_ + self._model_prefix_ + "_" + str(i), epoch=0)