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# @package _global_
# example hyperparameter optimization of some experiment with Optuna:
# python train.py -m hparams_search=mnist_optuna experiment=example
defaults:
- override /datamodule: focus150.yaml
- override /model: focusResNet_150.yaml
- override /hydra/sweeper: optuna
# choose metric which will be optimized by Optuna
# make sure this is the correct name of some metric logged in lightning module!
optimized_metric: "val/mae_best"
datamodule:
batch_size: 64
augmentation: True
name: "focusResNet_150_hyperparameter_search"
# here we define Optuna hyperparameter search
# it optimizes for value returned from function with @hydra.main decorator
# docs: https://hydra.cc/docs/next/plugins/optuna_sweeper
hydra:
sweeper:
_target_: hydra_plugins.hydra_optuna_sweeper.optuna_sweeper.OptunaSweeper
# storage URL to persist optimization results
# for example, you can use SQLite if you set 'sqlite:///example.db'
storage: null
# name of the study to persist optimization results
study_name: focusResNet_150_hyperparameter
# number of parallel workers
n_jobs: 1
# 'minimize' or 'maximize' the objective
direction: minimize
# total number of runs that will be executed
n_trials: 20
# choose Optuna hyperparameter sampler
# docs: https://optuna.readthedocs.io/en/stable/reference/samplers.html
sampler:
_target_: optuna.samplers.TPESampler
seed: 12345
n_startup_trials: 10 # number of random sampling runs before optimization starts
# define range of hyperparameters
search_space:
model.pretrained:
type: categorical
choices: [true, false]
model.lr:
type: float
low: 0.001
high: 0.01
model.resnet_type:
type: categorical
choices: [
"resnet18",
"resnet34",
"resnet50",
"resnet101",
"resnext50_32x4d",
"wide_resnet50_2",
]
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