{
    "imports": [
        "$import functools",
        "$import glob",
        "$import scripts"
    ],
    "bundle_root": ".",
    "device": "$torch.device('cuda:0' if torch.cuda.is_available() else 'cpu')",
    "ckpt_dir": "$@bundle_root + '/models'",
    "tf_dir": "$@bundle_root + '/eval'",
    "dataset_dir": "/workspace/data/medical",
    "pretrained": false,
    "perceptual_loss_model_weights_path": null,
    "train_batch_size": 2,
    "lr": 1e-05,
    "train_patch_size": [
        112,
        128,
        80
    ],
    "channel": 0,
    "spacing": [
        1.1,
        1.1,
        1.1
    ],
    "spatial_dims": 3,
    "image_channels": 1,
    "latent_channels": 8,
    "discriminator_def": {
        "_target_": "generative.networks.nets.PatchDiscriminator",
        "spatial_dims": "@spatial_dims",
        "num_layers_d": 3,
        "num_channels": 32,
        "in_channels": 1,
        "out_channels": 1,
        "norm": "INSTANCE"
    },
    "autoencoder_def": {
        "_target_": "generative.networks.nets.AutoencoderKL",
        "spatial_dims": "@spatial_dims",
        "in_channels": "@image_channels",
        "out_channels": "@image_channels",
        "latent_channels": "@latent_channels",
        "num_channels": [
            64,
            128,
            256
        ],
        "num_res_blocks": 2,
        "norm_num_groups": 32,
        "norm_eps": 1e-06,
        "attention_levels": [
            false,
            false,
            false
        ],
        "with_encoder_nonlocal_attn": false,
        "with_decoder_nonlocal_attn": false
    },
    "perceptual_loss_def": {
        "_target_": "generative.losses.PerceptualLoss",
        "spatial_dims": "@spatial_dims",
        "network_type": "resnet50",
        "is_fake_3d": true,
        "fake_3d_ratio": 0.2,
        "pretrained": "@pretrained",
        "pretrained_path": "@perceptual_loss_model_weights_path",
        "pretrained_state_dict_key": "state_dict"
    },
    "dnetwork": "$@discriminator_def.to(@device)",
    "gnetwork": "$@autoencoder_def.to(@device)",
    "loss_perceptual": "$@perceptual_loss_def.to(@device)",
    "doptimizer": {
        "_target_": "torch.optim.Adam",
        "params": "$@dnetwork.parameters()",
        "lr": "@lr"
    },
    "goptimizer": {
        "_target_": "torch.optim.Adam",
        "params": "$@gnetwork.parameters()",
        "lr": "@lr"
    },
    "preprocessing_transforms": [
        {
            "_target_": "LoadImaged",
            "keys": "image"
        },
        {
            "_target_": "EnsureChannelFirstd",
            "keys": "image"
        },
        {
            "_target_": "Lambdad",
            "keys": "image",
            "func": "$lambda x: x[@channel, :, :, :]"
        },
        {
            "_target_": "AddChanneld",
            "keys": "image"
        },
        {
            "_target_": "EnsureTyped",
            "keys": "image"
        },
        {
            "_target_": "Orientationd",
            "keys": "image",
            "axcodes": "RAS"
        },
        {
            "_target_": "Spacingd",
            "keys": "image",
            "pixdim": "@spacing",
            "mode": "bilinear"
        }
    ],
    "final_transforms": [
        {
            "_target_": "ScaleIntensityRangePercentilesd",
            "keys": "image",
            "lower": 0,
            "upper": 99.5,
            "b_min": 0,
            "b_max": 1
        }
    ],
    "train": {
        "crop_transforms": [
            {
                "_target_": "RandSpatialCropd",
                "keys": "image",
                "roi_size": "@train_patch_size",
                "random_size": false
            }
        ],
        "preprocessing": {
            "_target_": "Compose",
            "transforms": "$@preprocessing_transforms + @train#crop_transforms + @final_transforms"
        },
        "dataset": {
            "_target_": "monai.apps.DecathlonDataset",
            "root_dir": "@dataset_dir",
            "task": "Task01_BrainTumour",
            "section": "training",
            "cache_rate": 1.0,
            "num_workers": 8,
            "download": false,
            "transform": "@train#preprocessing"
        },
        "dataloader": {
            "_target_": "DataLoader",
            "dataset": "@train#dataset",
            "batch_size": "@train_batch_size",
            "shuffle": true,
            "num_workers": 0
        },
        "handlers": [
            {
                "_target_": "CheckpointSaver",
                "save_dir": "@ckpt_dir",
                "save_dict": {
                    "model": "@gnetwork"
                },
                "save_interval": 0,
                "save_final": true,
                "epoch_level": true,
                "final_filename": "model_autoencoder.pt"
            },
            {
                "_target_": "StatsHandler",
                "tag_name": "train_loss",
                "output_transform": "$lambda x: monai.handlers.from_engine(['g_loss'], first=True)(x)[0]"
            },
            {
                "_target_": "TensorBoardStatsHandler",
                "log_dir": "@tf_dir",
                "tag_name": "train_loss",
                "output_transform": "$lambda x: monai.handlers.from_engine(['g_loss'], first=True)(x)[0]"
            }
        ],
        "trainer": {
            "_target_": "scripts.ldm_trainer.VaeGanTrainer",
            "device": "@device",
            "max_epochs": 1500,
            "train_data_loader": "@train#dataloader",
            "g_network": "@gnetwork",
            "g_optimizer": "@goptimizer",
            "g_loss_function": "$functools.partial(scripts.losses.generator_loss, disc_net=@dnetwork, loss_perceptual=@loss_perceptual)",
            "d_network": "@dnetwork",
            "d_optimizer": "@doptimizer",
            "d_loss_function": "$functools.partial(scripts.losses.discriminator_loss, disc_net=@dnetwork)",
            "d_train_steps": 5,
            "g_update_latents": true,
            "latent_shape": "@latent_channels",
            "key_train_metric": "$None",
            "train_handlers": "@train#handlers"
        }
    },
    "initialize": [
        "$monai.utils.set_determinism(seed=0)"
    ],
    "run": [
        "$@train#trainer.run()"
    ]
}