class IncrementalModelAttentionChaplotResNet(AbstractIncrementalModel):
    def __init__(self,
                 config,
                 constants,
                 final_model_type="unet",
                 final_dimension=None):
        AbstractIncrementalModel.__init__(self, config, constants)
        self.none_action = config["num_actions"]
        self.image_module = UnetImageModule(
            image_emb_size=constants["image_emb_dim"],
            input_num_channels=3,
            image_height=config["image_height"],
            image_width=config["image_width"],
            using_recurrence=True,
            final_dimension=final_dimension)
        num_channels, image_height, image_width = self.image_module.get_final_dimension(
        )
        self.num_cameras = 1
        self.image_recurrence_module = IncrementalRecurrenceChaplotModule(
            input_emb_dim=256, output_emb_dim=256)
        if config["use_pointer_model"]:
            raise NotImplementedError()
        else:
            self.text_module = ChaplotTextModule(
                emb_dim=32,
                hidden_dim=256,
                vocab_size=config["vocab_size"],
                image_height=image_height,
                image_width=image_width)

        if config["do_action_prediction"]:
            self.action_prediction_module = ActionPredictionModule(
                2 * self.num_cameras * constants["image_emb_dim"],
                constants["image_emb_dim"], config["num_actions"])
        else:
            self.action_prediction_module = None

        if config["do_temporal_autoencoding"]:
            self.temporal_autoencoder_module = TemporalAutoencoderModule(
                self.action_module,
                self.num_cameras * constants["image_emb_dim"],
                constants["action_emb_dim"], constants["image_emb_dim"])
        else:
            self.temporal_autoencoder_module = None

        if config["do_object_detection"]:
            self.landmark_names = get_all_landmark_names()
            self.object_detection_module = PixelIdentificationModule(
                num_channels=num_channels, num_objects=67)
        else:
            self.object_detection_module = None

        if config["do_symbolic_language_prediction"]:
            self.symbolic_language_prediction_module = SymbolicLanguagePredictionModule(
                total_emb_size=2 * constants["lstm_emb_dim"])
        else:
            self.symbolic_language_prediction_module = None

        if config["do_goal_prediction"]:
            self.goal_prediction_module = None  # GoalPredictionModule(total_emb_size=32)
        else:
            self.goal_prediction_module = None

        if final_model_type == "m4jksum1":
            self.final_module = IncrementalMultimodalAttentionChaplotModuleM4JKSUM1(
                image_module=self.image_module,
                image_recurrence_module=self.image_recurrence_module,
                text_module=self.text_module,
                max_episode_length=150,
                final_image_height=image_height,
                final_image_width=image_width)
        elif final_model_type == "unet":
            self.final_module = IncrementalUnetAttentionModuleJustProb(
                image_module=self.image_module,
                image_recurrence_module=self.image_recurrence_module,
                text_module=self.text_module,
                max_episode_length=150,
                final_image_height=image_height,
                final_image_width=image_width,
                in_channels=num_channels,
                out_channels=1,
                embedding_size=256)
        elif final_model_type == "unet-positional-encoding":
            self.final_module = IncrementalUnetAttentionModuleJustProbSpatialEncoding(
                image_module=self.image_module,
                image_recurrence_module=self.image_recurrence_module,
                text_module=self.text_module,
                max_episode_length=150,
                final_image_height=image_height,
                final_image_width=image_width,
                in_channels=num_channels,
                out_channels=1,
                embedding_size=256)
        elif final_model_type == "andrew":
            self.final_module = IncrementalMultimodalAttentionChaplotModuleM5AndrewV2(
                image_module=self.image_module,
                image_recurrence_module=self.image_recurrence_module,
                text_module=self.text_module,
                max_episode_length=150,
                final_image_height=image_height,
                final_image_width=image_width,
                normalize_filters=False)
        else:
            raise AssertionError("Unknown final model type ", final_model_type)
        if torch.cuda.is_available():
            self.image_module.cuda()
            self.image_recurrence_module.cuda()
            self.text_module.cuda()
            self.final_module.cuda()
            if self.action_prediction_module is not None:
                self.action_prediction_module.cuda()
            if self.temporal_autoencoder_module is not None:
                self.temporal_autoencoder_module.cuda()
            if self.object_detection_module is not None:
                self.object_detection_module.cuda()
            if self.symbolic_language_prediction_module is not None:
                self.symbolic_language_prediction_module.cuda()
            if self.goal_prediction_module is not None:
                self.goal_prediction_module.cuda()

    def get_probs_batch(self, agent_observed_state_list, mode=None):
        raise NotImplementedError()

    def get_probs(self,
                  agent_observed_state,
                  model_state,
                  mode=None,
                  volatile=False):

        assert isinstance(agent_observed_state, AgentObservedState)
        agent_observed_state_list = [agent_observed_state]

        image_seqs = [[aos.get_last_image()]
                      for aos in agent_observed_state_list]
        image_batch = cuda_var(
            torch.from_numpy(np.array(image_seqs)).float(), volatile)

        instructions = [
            aos.get_instruction() for aos in agent_observed_state_list
        ]
        instructions_batch = cuda_var(
            torch.from_numpy(np.array(instructions)).long())

        time = agent_observed_state.time_step
        time = cuda_var(torch.from_numpy(np.array([time])).long())

        instruction_string = instruction_to_string(
            agent_observed_state.instruction, self.config)

        probs_batch, new_model_state, image_emb_seq, state_feature = self.final_module(
            image_batch, instructions_batch, time, mode, model_state,
            instruction_string, agent_observed_state.goal)
        return probs_batch, new_model_state, image_emb_seq, state_feature

    def action_prediction_log_prob(self, batch_input):
        assert self.action_prediction_module is not None, "Action prediction module not created. Check config."
        return self.action_prediction_module(batch_input)

    def predict_action_result(self, batch_image_feature, action_batch):
        assert self.temporal_autoencoder_module is not None, "Temporal action module not created. Check config."
        return self.temporal_autoencoder_module(batch_image_feature,
                                                action_batch)

    def predict_goal_result(self, batch_state_feature):
        assert self.goal_prediction_module is not None, "Goal Prediction module not created. Check config."
        return self.goal_prediction_module(batch_state_feature)

    def get_probs_and_visible_objects(self, agent_observed_state_list,
                                      batch_image_feature):
        assert self.object_detection_module is not None, "Object detection module not created. Check config."
        landmarks_visible = []
        for aos in agent_observed_state_list:
            x_pos, z_pos, y_angle = aos.get_position_orientation()
            landmark_pos_dict = aos.get_landmark_pos_dict()
            visible_landmarks_dict = self.object_detection_module.get_visible_landmark_r_theta(
                x_pos, z_pos, y_angle, landmark_pos_dict)
            landmarks_visible.append(visible_landmarks_dict)

        # shape is BATCH_SIZE x num objects x 2
        landmark_log_prob, distance_log_prob, theta_log_prob = self.object_detection_module(
            batch_image_feature)

        # landmarks_visible is list of length BATCH_SIZE, each item is a set containing landmark indices
        return landmark_log_prob, distance_log_prob, theta_log_prob, landmarks_visible

    def get_pixel_level_object_prob(self, agent_observed_state_list,
                                    batch_image_feature):

        assert self.object_detection_module is not None, "Object detection module not created. Check config."
        landmarks_visible = []
        for aos in agent_observed_state_list:
            x_pos, z_pos, y_angle = aos.get_position_orientation()
            landmark_pos_dict = aos.get_landmark_pos_dict()
            visible_landmarks_dict = self.object_detection_module.get_visible_landmark_r_theta(
                x_pos, z_pos, y_angle, landmark_pos_dict)
            landmarks_visible.append(visible_landmarks_dict)

        # shape is BATCH_SIZE x num objects x 2
        log_prob = self.object_detection_module(batch_image_feature)

        # landmarks_visible is list of length BATCH_SIZE, each item is a set containing landmark indices
        return log_prob, landmarks_visible

    def get_language_prediction_probs(self, batch_input):
        assert self.symbolic_language_prediction_module is not None, \
            "Language prediction module not created. Check config."
        return self.symbolic_language_prediction_module(batch_input)

    def get_attention_prob(self,
                           agent_observed_state,
                           model_state,
                           mode=None,
                           volatile=False):

        assert isinstance(agent_observed_state, AgentObservedState)
        agent_observed_state_list = [agent_observed_state]

        image_seqs = [[aos.get_last_image()]
                      for aos in agent_observed_state_list]
        image_batch = cuda_var(
            torch.from_numpy(np.array(image_seqs)).float(), volatile)

        instructions = [
            aos.get_instruction() for aos in agent_observed_state_list
        ]
        instructions_batch = cuda_var(
            torch.from_numpy(np.array(instructions)).long())

        time = agent_observed_state.time_step
        time = cuda_var(torch.from_numpy(np.array([time])).long())

        instruction_string = instruction_to_string(
            agent_observed_state.instruction, self.config)

        state_feature = self.final_module.get_attention_prob(
            image_batch, instructions_batch, instruction_string,
            agent_observed_state.goal)
        return state_feature

    def init_weights(self):
        self.text_module.init_weights()
        self.image_recurrence_module.init_weights()
        self.image_module.init_weights()
        self.final_module.init_weights()

    def share_memory(self):
        self.image_module.share_memory()
        self.image_recurrence_module.share_memory()
        self.text_module.share_memory()
        self.final_module.share_memory()
        if self.action_prediction_module is not None:
            self.action_prediction_module.share_memory()
        if self.temporal_autoencoder_module is not None:
            self.temporal_autoencoder_module.share_memory()
        if self.object_detection_module is not None:
            self.object_detection_module.share_memory()
        if self.symbolic_language_prediction_module is not None:
            self.symbolic_language_prediction_module.share_memory()
        if self.goal_prediction_module is not None:
            self.goal_prediction_module.share_memory()

    def get_state_dict(self):
        nested_state_dict = dict()
        nested_state_dict["image_module"] = self.image_module.state_dict()
        nested_state_dict[
            "image_recurrence_module"] = self.image_recurrence_module.state_dict(
            )
        nested_state_dict["text_module"] = self.text_module.state_dict()
        nested_state_dict["final_module"] = self.final_module.state_dict()
        if self.action_prediction_module is not None:
            nested_state_dict[
                "ap_module"] = self.action_prediction_module.state_dict()
        if self.temporal_autoencoder_module is not None:
            nested_state_dict[
                "tae_module"] = self.temporal_autoencoder_module.state_dict()
        if self.object_detection_module is not None:
            nested_state_dict[
                "od_module"] = self.object_detection_module.state_dict()
        if self.symbolic_language_prediction_module is not None:
            nested_state_dict[
                "sym_lang_module"] = self.symbolic_language_prediction_module.state_dict(
                )
        if self.goal_prediction_module is not None:
            nested_state_dict[
                "goal_pred_module"] = self.goal_prediction_module.state_dict()
        return nested_state_dict

    def load_from_state_dict(self, nested_state_dict):
        self.image_module.load_state_dict(nested_state_dict["image_module"])
        self.image_recurrence_module.load_state_dict(
            nested_state_dict["image_recurrence_module"])
        self.text_module.load_state_dict(nested_state_dict["text_module"])
        self.final_module.load_state_dict(nested_state_dict["final_module"])

        if self.action_prediction_module is not None:
            self.action_prediction_module.load_state_dict(
                nested_state_dict["ap_module"])
        if self.temporal_autoencoder_module is not None:
            self.temporal_autoencoder_module.load_state_dict(
                nested_state_dict["tae_module"])
        if self.object_detection_module is not None:
            self.object_detection_module.load_state_dict(
                nested_state_dict["od_module"])
        if self.symbolic_language_prediction_module is not None:
            self.symbolic_language_prediction_module.load_state_dict(
                nested_state_dict["sym_lang_module"])
        if self.goal_prediction_module is not None:
            self.goal_prediction_module.load_state_dict(
                nested_state_dict["goal_pred_module"])

    def load_resnet_model(self, load_dir):
        if torch.cuda.is_available():
            torch_load = torch.load
        else:
            torch_load = lambda f_: torch.load(f_,
                                               map_location=lambda s_, l_: s_)
        image_module_path = os.path.join(load_dir, "image_module_state.bin")
        self.image_module.load_state_dict(torch_load(image_module_path))

    def fix_resnet(self):
        self.image_module.fix_resnet()

    def load_lstm_model(self, load_dir):
        if torch.cuda.is_available():
            torch_load = torch.load
        else:
            torch_load = lambda f_: torch.load(f_,
                                               map_location=lambda s_, l_: s_)
        text_module_path = os.path.join(load_dir, "text_module_state.bin")
        self.text_module.load_state_dict(torch_load(text_module_path))

    def load_saved_model(self, load_dir):
        if torch.cuda.is_available():
            torch_load = torch.load
        else:
            torch_load = lambda f_: torch.load(f_,
                                               map_location=lambda s_, l_: s_)
        image_module_path = os.path.join(load_dir, "image_module_state.bin")
        self.image_module.load_state_dict(torch_load(image_module_path))
        image_recurrence_module_path = os.path.join(
            load_dir, "image_recurrence_module_state.bin")
        self.image_recurrence_module.load_state_dict(
            torch_load(image_recurrence_module_path))
        text_module_path = os.path.join(load_dir, "text_module_state.bin")
        self.text_module.load_state_dict(torch_load(text_module_path))
        # action_module_path = os.path.join(load_dir, "action_module_state.bin")
        # self.action_module.load_state_dict(torch_load(action_module_path))
        final_module_path = os.path.join(load_dir, "final_module_state.bin")
        self.final_module.load_state_dict(torch_load(final_module_path),
                                          strict=False)
        if self.action_prediction_module is not None:
            auxiliary_action_prediction_path = os.path.join(
                load_dir, "auxiliary_action_prediction.bin")
            self.action_prediction_module.load_state_dict(
                torch_load(auxiliary_action_prediction_path))
        if self.temporal_autoencoder_module is not None:
            auxiliary_temporal_autoencoder_path = os.path.join(
                load_dir, "auxiliary_temporal_autoencoder.bin")
            self.temporal_autoencoder_module.load_state_dict(
                torch_load(auxiliary_temporal_autoencoder_path))
        if self.object_detection_module is not None:
            auxiliary_object_detection_path = os.path.join(
                load_dir, "auxiliary_object_detection.bin")
            self.object_detection_module.load_state_dict(
                torch_load(auxiliary_object_detection_path))
        if self.symbolic_language_prediction_module is not None:
            auxiliary_symbolic_language_prediction_path = os.path.join(
                load_dir, "auxiliary_symbolic_language_prediction.bin")
            self.symbolic_language_prediction_module.load_state_dict(
                torch_load(auxiliary_symbolic_language_prediction_path))
        if self.goal_prediction_module is not None:
            auxiliary_goal_prediction_path = os.path.join(
                load_dir, "auxiliary_goal_prediction.bin")
            self.goal_prediction_module.load_state_dict(
                torch_load(auxiliary_goal_prediction_path))

    def save_model(self, save_dir):
        if not os.path.exists(save_dir):
            os.makedirs(save_dir)

        # save state file for image nn
        image_module_path = os.path.join(save_dir, "image_module_state.bin")
        torch.save(self.image_module.state_dict(), image_module_path)
        # save state file for image recurrence nn
        image_recurrence_module_path = os.path.join(
            save_dir, "image_recurrence_module_state.bin")
        torch.save(self.image_recurrence_module.state_dict(),
                   image_recurrence_module_path)
        # save state file for text nn
        text_module_path = os.path.join(save_dir, "text_module_state.bin")
        torch.save(self.text_module.state_dict(), text_module_path)
        # save state file for action emb
        # action_module_path = os.path.join(save_dir, "action_module_state.bin")
        # torch.save(self.action_module.state_dict(), action_module_path)
        # save state file for final nn
        final_module_path = os.path.join(save_dir, "final_module_state.bin")
        torch.save(self.final_module.state_dict(), final_module_path)
        # save the auxiliary models
        if self.action_prediction_module is not None:
            auxiliary_action_prediction_path = os.path.join(
                save_dir, "auxiliary_action_prediction.bin")
            torch.save(self.action_prediction_module.state_dict(),
                       auxiliary_action_prediction_path)
        if self.temporal_autoencoder_module is not None:
            auxiliary_temporal_autoencoder_path = os.path.join(
                save_dir, "auxiliary_temporal_autoencoder.bin")
            torch.save(self.temporal_autoencoder_module.state_dict(),
                       auxiliary_temporal_autoencoder_path)
        if self.object_detection_module is not None:
            auxiliary_object_detection_path = os.path.join(
                save_dir, "auxiliary_object_detection.bin")
            torch.save(self.object_detection_module.state_dict(),
                       auxiliary_object_detection_path)
        if self.symbolic_language_prediction_module is not None:
            auxiliary_symbolic_language_prediction_path = os.path.join(
                save_dir, "auxiliary_symbolic_language_prediction.bin")
            torch.save(self.symbolic_language_prediction_module.state_dict(),
                       auxiliary_symbolic_language_prediction_path)
        if self.goal_prediction_module is not None:
            auxiliary_goal_prediction_path = os.path.join(
                save_dir, "auxiliary_goal_prediction.bin")
            torch.save(self.goal_prediction_module.state_dict(),
                       auxiliary_goal_prediction_path)

    def get_parameters(self):
        # parameters = list(self.image_module.parameters())
        # parameters += list(self.image_recurrence_module.parameters())
        # parameters += list(self.text_module.parameters())
        parameters = list(self.final_module.parameters())
        if self.action_prediction_module is not None:
            parameters += list(self.action_prediction_module.parameters())
        if self.temporal_autoencoder_module is not None:
            parameters += list(self.temporal_autoencoder_module.parameters())
        if self.object_detection_module is not None:
            parameters += list(self.object_detection_module.parameters())
        if self.symbolic_language_prediction_module is not None:
            parameters += list(
                self.symbolic_language_prediction_module.parameters())
        if self.goal_prediction_module is not None:
            parameters += list(self.goal_prediction_module.parameters())

        return parameters

    def get_named_parameters(self):
        # named_parameters = list(self.image_module.named_parameters())
        # named_parameters += list(self.image_recurrence_module.named_parameters())
        # named_parameters += list(self.text_module.named_parameters())
        named_parameters = list(self.final_module.named_parameters())
        if self.action_prediction_module is not None:
            named_parameters += list(
                self.action_prediction_module.named_parameters())
        if self.temporal_autoencoder_module is not None:
            named_parameters += list(
                self.temporal_autoencoder_module.named_parameters())
        if self.object_detection_module is not None:
            named_parameters += list(
                self.object_detection_module.named_parameters())
        if self.symbolic_language_prediction_module is not None:
            named_parameters += list(
                self.symbolic_language_prediction_module.named_parameters())
        if self.goal_prediction_module is not None:
            named_parameters += list(
                self.goal_prediction_module.named_parameters())
        return named_parameters
Ejemplo n.º 2
0
class IncrementalModelRecurrentPolicyNetworkResnet(AbstractIncrementalModel):
    def __init__(self, config, constants):
        AbstractIncrementalModel.__init__(self, config, constants)
        self.none_action = config["num_actions"]
        self.image_module = ImageResnetModule(
            image_emb_size=constants["image_emb_dim"],
            input_num_channels=3,
            image_height=config["image_height"],
            image_width=config["image_width"],
            using_recurrence=True)
        self.num_cameras = 1
        self.image_recurrence_module = IncrementalRecurrenceSimpleModule(
            input_emb_dim=(constants["image_emb_dim"] * self.num_cameras + constants["action_emb_dim"]),
            output_emb_dim=constants["image_emb_dim"])
        if config["use_pointer_model"]:
            self.text_module = TextPointerModule(
                emb_dim=constants["word_emb_dim"],
                hidden_dim=constants["lstm_emb_dim"],
                vocab_size=config["vocab_size"])
        else:
            self.text_module = TextBiLSTMModule(
                emb_dim=constants["word_emb_dim"],
                hidden_dim=constants["lstm_emb_dim"],
                vocab_size=config["vocab_size"])
        self.action_module = ActionSimpleModule(
            num_actions=config["num_actions"],
            action_emb_size=constants["action_emb_dim"])
        if config["use_pointer_model"]:
            total_emb_size = (constants["image_emb_dim"]
                              + 4 * constants["lstm_emb_dim"]
                              + constants["action_emb_dim"])
        else:
            total_emb_size = ((self.num_cameras + 1) * constants["image_emb_dim"]
                              + 2 * constants["lstm_emb_dim"]
                              + constants["action_emb_dim"])

        if config["do_action_prediction"]:
            self.action_prediction_module = ActionPredictionModule(
                2 * self.num_cameras * constants["image_emb_dim"], constants["image_emb_dim"], config["num_actions"])
        else:
            self.action_prediction_module = None

        if config["do_temporal_autoencoding"]:
            self.temporal_autoencoder_module = TemporalAutoencoderModule(
                self.action_module, self.num_cameras * constants["image_emb_dim"],
                constants["action_emb_dim"], constants["image_emb_dim"])
        else:
            self.temporal_autoencoder_module = None

        if config["do_object_detection"]:
            self.landmark_names = get_all_landmark_names()
            self.object_detection_module = ObjectDetectionModule(
                image_module=self.image_module, image_emb_size=self.num_cameras * constants["image_emb_dim"], num_objects=67)
        else:
            self.object_detection_module = None

        if config["do_symbolic_language_prediction"]:
            self.symbolic_language_prediction_module = SymbolicLanguagePredictionModule(
                total_emb_size=2 * constants["lstm_emb_dim"])
        else:
            self.symbolic_language_prediction_module = None

        if config["do_goal_prediction"]:
            self.goal_prediction_module = GoalPredictionModule(
                total_emb_size=32)
        else:
            self.goal_prediction_module = None

        final_module = TmpIncrementalMultimodalDenseValtsRecurrentSimpleModule(
            image_module=self.image_module,
            image_recurrence_module=self.image_recurrence_module,
            text_module=self.text_module,
            action_module=self.action_module,
            total_emb_size=total_emb_size,
            num_actions=config["num_actions"])
        self.final_module = final_module
        if torch.cuda.is_available():
            self.image_module.cuda()
            self.image_recurrence_module.cuda()
            self.text_module.cuda()
            self.action_module.cuda()
            self.final_module.cuda()
            if self.action_prediction_module is not None:
                self.action_prediction_module.cuda()
            if self.temporal_autoencoder_module is not None:
                self.temporal_autoencoder_module.cuda()
            if self.object_detection_module is not None:
                self.object_detection_module.cuda()
            if self.symbolic_language_prediction_module is not None:
                self.symbolic_language_prediction_module.cuda()
            if self.goal_prediction_module is not None:
                self.goal_prediction_module.cuda()

    def get_probs_batch(self, agent_observed_state_list, mode=None):
        raise AssertionError("Buggy")
        for aos in agent_observed_state_list:
            assert isinstance(aos, AgentObservedState)
        # print "batch size:", len(agent_observed_state_list)

        # sort list by instruction length
        agent_observed_state_list = sorted(
            agent_observed_state_list,
            key=lambda aos_: len(aos_.get_instruction()),
            reverse=True
        )

        image_seq_lens = [aos.get_num_images()
                          for aos in agent_observed_state_list]
        image_seq_lens_batch = cuda_tensor(
            torch.from_numpy(np.array(image_seq_lens)))
        max_len = max(image_seq_lens)
        image_seqs = [aos.get_image()[:max_len]
                      for aos in agent_observed_state_list]
        image_batch = cuda_var(torch.from_numpy(np.array(image_seqs)).float())

        instructions = [aos.get_instruction()
                        for aos in agent_observed_state_list]
        read_pointers = [aos.get_read_pointers()
                         for aos in agent_observed_state_list]
        instructions_batch = (instructions, read_pointers)

        prev_actions_raw = [aos.get_previous_action()
                            for aos in agent_observed_state_list]
        prev_actions = [self.none_action if a is None else a
                        for a in prev_actions_raw]
        prev_actions_batch = cuda_var(torch.from_numpy(np.array(prev_actions)))

        probs_batch, _ = self.final_module(image_batch, image_seq_lens_batch,
                                           instructions_batch, prev_actions_batch,
                                           mode, model_state=None)
        return probs_batch

    def get_probs(self, agent_observed_state, model_state, mode=None, volatile=False):

        assert isinstance(agent_observed_state, AgentObservedState)
        agent_observed_state_list = [agent_observed_state]

        image_seq_lens = [1]
        image_seq_lens_batch = cuda_tensor(
            torch.from_numpy(np.array(image_seq_lens)))
        # max_len = max(image_seq_lens)
        # image_seqs = [aos.get_image()[:max_len]
        #               for aos in agent_observed_state_list]
        image_seqs = [[aos.get_last_image()]
                      for aos in agent_observed_state_list]
        image_batch = cuda_var(torch.from_numpy(np.array(image_seqs)).float(), volatile)

        instructions = [aos.get_instruction()
                        for aos in agent_observed_state_list]
        read_pointers = [aos.get_read_pointers()
                         for aos in agent_observed_state_list]
        instructions_batch = (instructions, read_pointers)

        prev_actions_raw = [aos.get_previous_action()
                            for aos in agent_observed_state_list]
        prev_actions = [self.none_action if a is None else a
                        for a in prev_actions_raw]
        prev_actions_batch = cuda_var(torch.from_numpy(np.array(prev_actions)), volatile)

        probs_batch, new_model_state, image_emb_seq, state_feature = self.final_module(
            image_batch, image_seq_lens_batch, instructions_batch, prev_actions_batch, mode, model_state)
        return probs_batch, new_model_state, image_emb_seq, state_feature

    def action_prediction_log_prob(self, batch_input):
        assert self.action_prediction_module is not None, "Action prediction module not created. Check config."
        return self.action_prediction_module(batch_input)

    def predict_action_result(self, batch_image_feature, action_batch):
        assert self.temporal_autoencoder_module is not None, "Temporal action module not created. Check config."
        return self.temporal_autoencoder_module(batch_image_feature, action_batch)

    def predict_goal_result(self, batch_state_feature):
        assert self.goal_prediction_module is not None, "Goal Prediction module not created. Check config."
        return self.goal_prediction_module(batch_state_feature)

    def get_probs_and_visible_objects(self, agent_observed_state_list, batch_image_feature):
        assert self.object_detection_module is not None, "Object detection module not created. Check config."
        landmarks_visible = []
        for aos in agent_observed_state_list:
            x_pos, z_pos, y_angle = aos.get_position_orientation()
            landmark_pos_dict = aos.get_landmark_pos_dict()
            visible_landmarks_dict = self.object_detection_module.get_visible_landmark_r_theta(
                x_pos, z_pos, y_angle, landmark_pos_dict)
            landmarks_visible.append(visible_landmarks_dict)

        # shape is BATCH_SIZE x num objects x 2
        landmark_log_prob, distance_log_prob, theta_log_prob = self.object_detection_module(batch_image_feature)

        # landmarks_visible is list of length BATCH_SIZE, each item is a set containing landmark indices
        return landmark_log_prob, distance_log_prob, theta_log_prob, landmarks_visible

    def get_language_prediction_probs(self, batch_input):
        assert self.symbolic_language_prediction_module is not None, \
            "Language prediction module not created. Check config."
        return self.symbolic_language_prediction_module(batch_input)

    def init_weights(self):

        self.text_module.init_weights()
        self.image_recurrence_module.init_weights()
        self.image_module.init_weights()

    def share_memory(self):
        self.image_module.share_memory()
        self.image_recurrence_module.share_memory()
        self.text_module.share_memory()
        self.action_module.share_memory()
        self.final_module.share_memory()
        if self.action_prediction_module is not None:
            self.action_prediction_module.share_memory()
        if self.temporal_autoencoder_module is not None:
            self.temporal_autoencoder_module.share_memory()
        if self.object_detection_module is not None:
            self.object_detection_module.share_memory()
        if self.symbolic_language_prediction_module is not None:
            self.symbolic_language_prediction_module.share_memory()
        if self.goal_prediction_module is not None:
            self.goal_prediction_module.share_memory()

    def get_state_dict(self):
        nested_state_dict = dict()
        nested_state_dict["image_module"] = self.image_module.state_dict()
        nested_state_dict["image_recurrence_module"] = self.image_recurrence_module.state_dict()
        nested_state_dict["text_module"] = self.text_module.state_dict()
        nested_state_dict["action_module"] = self.action_module.state_dict()
        nested_state_dict["final_module"] = self.final_module.state_dict()
        if self.action_prediction_module is not None:
            nested_state_dict["ap_module"] = self.action_prediction_module.state_dict()
        if self.temporal_autoencoder_module is not None:
            nested_state_dict["tae_module"] = self.temporal_autoencoder_module.state_dict()
        if self.object_detection_module is not None:
            nested_state_dict["od_module"] = self.object_detection_module.state_dict()
        if self.symbolic_language_prediction_module is not None:
            nested_state_dict["sym_lang_module"] = self.symbolic_language_prediction_module.state_dict()
        if self.goal_prediction_module is not None:
            nested_state_dict["goal_pred_module"] = self.goal_prediction_module.state_dict()
        return nested_state_dict

    def load_from_state_dict(self, nested_state_dict):
        self.image_module.load_state_dict(nested_state_dict["image_module"])
        self.image_recurrence_module.load_state_dict(nested_state_dict["image_recurrence_module"])
        self.text_module.load_state_dict(nested_state_dict["text_module"])
        self.action_module.load_state_dict(nested_state_dict["action_module"])
        self.final_module.load_state_dict(nested_state_dict["final_module"])

        if self.action_prediction_module is not None:
            self.action_prediction_module.load_state_dict(nested_state_dict["ap_module"])
        if self.temporal_autoencoder_module is not None:
            self.temporal_autoencoder_module.load_state_dict(nested_state_dict["tae_module"])
        if self.object_detection_module is not None:
            self.object_detection_module.load_state_dict(nested_state_dict["od_module"])
        if self.symbolic_language_prediction_module is not None:
            self.symbolic_language_prediction_module.load_state_dict(nested_state_dict["sym_lang_module"])
        if self.goal_prediction_module is not None:
            self.goal_prediction_module.load_state_dict(nested_state_dict["goal_pred_module"])

    def load_resnet_model(self, load_dir):
        if torch.cuda.is_available():
            torch_load = torch.load
        else:
            torch_load = lambda f_: torch.load(f_, map_location=lambda s_, l_: s_)
        image_module_path = os.path.join(load_dir, "image_module_state.bin")
        self.image_module.load_state_dict(torch_load(image_module_path))

    def fix_resnet(self):
        self.image_module.fix_resnet()

    def load_lstm_model(self, load_dir):
        if torch.cuda.is_available():
            torch_load = torch.load
        else:
            torch_load = lambda f_: torch.load(f_, map_location=lambda s_, l_: s_)
        text_module_path = os.path.join(load_dir, "text_module_state.bin")
        self.text_module.load_state_dict(torch_load(text_module_path))

    def load_saved_model(self, load_dir):
        if torch.cuda.is_available():
            torch_load = torch.load
        else:
            torch_load = lambda f_: torch.load(f_, map_location=lambda s_, l_: s_)
        image_module_path = os.path.join(load_dir, "image_module_state.bin")
        self.image_module.load_state_dict(torch_load(image_module_path))
        image_recurrence_module_path = os.path.join(
            load_dir, "image_recurrence_module_state.bin")
        self.image_recurrence_module.load_state_dict(
            torch_load(image_recurrence_module_path))
        text_module_path = os.path.join(load_dir, "text_module_state.bin")
        self.text_module.load_state_dict(torch_load(text_module_path))
        action_module_path = os.path.join(load_dir, "action_module_state.bin")
        self.action_module.load_state_dict(torch_load(action_module_path))
        final_module_path = os.path.join(load_dir, "final_module_state.bin")
        self.final_module.load_state_dict(torch_load(final_module_path))
        if self.action_prediction_module is not None:
            auxiliary_action_prediction_path = os.path.join(load_dir, "auxiliary_action_prediction.bin")
            self.action_prediction_module.load_state_dict(torch_load(auxiliary_action_prediction_path))
        if self.temporal_autoencoder_module is not None:
            auxiliary_temporal_autoencoder_path = os.path.join(load_dir, "auxiliary_temporal_autoencoder.bin")
            self.temporal_autoencoder_module.load_state_dict(torch_load(auxiliary_temporal_autoencoder_path))
        if self.object_detection_module is not None:
            auxiliary_object_detection_path = os.path.join(load_dir, "auxiliary_object_detection.bin")
            self.object_detection_module.load_state_dict(torch_load(auxiliary_object_detection_path))
        if self.symbolic_language_prediction_module is not None:
            auxiliary_symbolic_language_prediction_path = os.path.join(
                load_dir, "auxiliary_symbolic_language_prediction.bin")
            self.symbolic_language_prediction_module.load_state_dict(
                torch_load(auxiliary_symbolic_language_prediction_path))
        if self.goal_prediction_module is not None:
            auxiliary_goal_prediction_path = os.path.join(load_dir, "auxiliary_goal_prediction.bin")
            self.goal_prediction_module.load_state_dict(torch_load(auxiliary_goal_prediction_path))

    def save_model(self, save_dir):
        if not os.path.exists(save_dir):
            os.makedirs(save_dir)

        # save state file for image nn
        image_module_path = os.path.join(save_dir, "image_module_state.bin")
        torch.save(self.image_module.state_dict(), image_module_path)
        # save state file for image recurrence nn
        image_recurrence_module_path = os.path.join(
            save_dir, "image_recurrence_module_state.bin")
        torch.save(self.image_recurrence_module.state_dict(),
                   image_recurrence_module_path)
        # save state file for text nn
        text_module_path = os.path.join(save_dir, "text_module_state.bin")
        torch.save(self.text_module.state_dict(), text_module_path)
        # save state file for action emb
        action_module_path = os.path.join(save_dir, "action_module_state.bin")
        torch.save(self.action_module.state_dict(), action_module_path)
        # save state file for final nn
        final_module_path = os.path.join(save_dir, "final_module_state.bin")
        torch.save(self.final_module.state_dict(), final_module_path)
        # save the auxiliary models
        if self.action_prediction_module is not None:
            auxiliary_action_prediction_path = os.path.join(save_dir, "auxiliary_action_prediction.bin")
            torch.save(self.action_prediction_module.state_dict(), auxiliary_action_prediction_path)
        if self.temporal_autoencoder_module is not None:
            auxiliary_temporal_autoencoder_path = os.path.join(save_dir, "auxiliary_temporal_autoencoder.bin")
            torch.save(self.temporal_autoencoder_module.state_dict(), auxiliary_temporal_autoencoder_path)
        if self.object_detection_module is not None:
            auxiliary_object_detection_path = os.path.join(save_dir, "auxiliary_object_detection.bin")
            torch.save(self.object_detection_module.state_dict(), auxiliary_object_detection_path)
        if self.symbolic_language_prediction_module is not None:
            auxiliary_symbolic_language_prediction_path = os.path.join(
                save_dir, "auxiliary_symbolic_language_prediction.bin")
            torch.save(self.symbolic_language_prediction_module.state_dict(),
                       auxiliary_symbolic_language_prediction_path)
        if self.goal_prediction_module is not None:
            auxiliary_goal_prediction_path = os.path.join(save_dir, "auxiliary_goal_prediction.bin")
            torch.save(self.goal_prediction_module.state_dict(), auxiliary_goal_prediction_path)

    def get_parameters(self):
        parameters = list(self.image_module.parameters())
        parameters += list(self.image_recurrence_module.parameters())
        parameters += list(self.text_module.parameters())
        parameters += list(self.action_module.parameters())
        parameters += list(self.final_module.parameters())
        if self.action_prediction_module is not None:
            parameters += list(self.action_prediction_module.parameters())
        if self.temporal_autoencoder_module is not None:
            parameters += list(self.temporal_autoencoder_module.parameters())
        if self.object_detection_module is not None:
            parameters += list(self.object_detection_module.parameters())
        if self.symbolic_language_prediction_module is not None:
            parameters += list(self.symbolic_language_prediction_module.parameters())
        if self.goal_prediction_module is not None:
            parameters += list(self.goal_prediction_module.parameters())

        return parameters

    def get_named_parameters(self):
        named_parameters = list(self.image_module.named_parameters())
        named_parameters += list(self.image_recurrence_module.named_parameters())
        named_parameters += list(self.text_module.named_parameters())
        named_parameters += list(self.action_module.named_parameters())
        named_parameters += list(self.final_module.named_parameters())
        if self.action_prediction_module is not None:
            named_parameters += list(self.action_prediction_module.named_parameters())
        if self.temporal_autoencoder_module is not None:
            named_parameters += list(self.temporal_autoencoder_module.named_parameters())
        if self.object_detection_module is not None:
            named_parameters += list(self.object_detection_module.named_parameters())
        if self.symbolic_language_prediction_module is not None:
            named_parameters += list(self.symbolic_language_prediction_module.named_parameters())
        if self.goal_prediction_module is not None:
            named_parameters += list(self.goal_prediction_module.named_parameters())
        return named_parameters