init
X_reshape(X)
¶
Reshape X to 2D array.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
X |
array
|
The input array. |
required |
Returns:
Name | Type | Description |
---|---|---|
X |
array
|
The reshaped input array. |
Examples:
>>> from spotPy.utils.init import X_reshape
>>> X = np.array([1,2,3])
>>> X_reshape(X)
array([[1, 2, 3]])
Source code in spotpython/utils/init.py
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|
check_and_create_dir(path)
¶
Check if the path exists and create it if it does not.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
path |
str
|
Path to the directory. |
required |
Returns:
Type | Description |
---|---|
noneType
|
None |
Examples:
>>> fromspotPy.utils.init import check_and_create_dir
>>> check_and_create_dir("data/")
Source code in spotpython/utils/init.py
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|
create_spot_tensorboard_path(tensorboard_log, prefix)
¶
Creates the spot_tensorboard_path and returns it.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
tensorboard_log |
bool
|
If True, the path to the folder where the tensorboard files are saved is created. |
required |
prefix |
str
|
The prefix for the experiment name. |
required |
Returns:
Name | Type | Description |
---|---|---|
spot_tensorboard_path |
str
|
The path to the folder where the tensorboard files are saved. |
Source code in spotpython/utils/init.py
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|
design_control_init(init_size=10, repeats=1)
¶
Initialize design_control dictionary.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
init_size |
int
|
The initial size of the experimental design. |
10
|
repeats |
int
|
The number of repeats of the design. |
1
|
Returns:
Name | Type | Description |
---|---|---|
design_control |
dict
|
A dictionary containing the information about the design of experiments. |
Source code in spotpython/utils/init.py
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|
fun_control_init(_L_in=None, _L_out=None, _L_cond=None, _torchmetric=None, PREFIX='00', TENSORBOARD_CLEAN=False, accelerator='auto', converters=None, core_model=None, core_model_name=None, data=None, data_dir='./data', data_module=None, data_set=None, data_set_name=None, db_dict_name=None, design=None, device=None, devices='auto', enable_progress_bar=False, EXPERIMENT_NAME=None, eval=None, fun_evals=15, fun_repeats=1, horizon=None, hyperdict=None, infill_criterion='y', log_level=50, lower=None, max_time=1, max_surrogate_points=30, metric_sklearn=None, metric_sklearn_name=None, noise=False, n_points=1, n_samples=None, n_total=None, num_workers=0, num_nodes=1, ocba_delta=0, oml_grace_period=None, optimizer=None, precision='32', prep_model=None, prep_model_name=None, progress_file=None, save_experiment=False, scaler=None, scaler_name=None, scenario=None, seed=123, show_models=False, show_progress=True, shuffle=None, sigma=0.0, strategy='auto', surrogate=None, target_column=None, target_type=None, task=None, tensorboard_log=False, tensorboard_start=False, tensorboard_stop=False, test=None, test_seed=1234, test_size=0.4, tkagg=False, train=None, tolerance_x=0, upper=None, var_name=None, var_type=['num'], verbosity=0, weights=1.0, weight_coeff=0.0, weights_entry=None)
¶
Initialize fun_control dictionary.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
_L_in |
int
|
The number of input features. |
None
|
_L_out |
int
|
The number of output features. |
None
|
_L_cond |
int
|
The number of conditional features. |
None
|
_torchmetric |
str
|
The metric to be used by the Lighting Trainer. For example “mean_squared_error”, see https://lightning.ai/docs/torchmetrics/stable/regression/mean_squared_error.html |
None
|
accelerator |
str
|
The accelerator to be used by the Lighting Trainer. It can be either “auto”, “dp”, “ddp”, “ddp2”, “ddp_spawn”, “ddp_cpu”, “gpu”, “tpu”. Default is “auto”. |
'auto'
|
converters |
dict
|
A dictionary containing the converters. Default is None. |
None
|
core_model |
object
|
The core model object. Default is None. |
None
|
core_model_name |
str
|
The name of the core model. Default is None. |
None
|
data |
object
|
The data object. Default is None. |
None
|
data_dir |
str
|
The directory to save the data. Default is “./data”. |
'./data'
|
data_module |
object
|
The data module object. Default is None. |
None
|
data_set |
object
|
The data set object. Default is None. |
None
|
data_set_name |
str
|
The name of the data set. Default is None. |
None
|
db_dict_name |
str
|
The name of the database dictionary. Default is None. |
None
|
device |
str
|
The device to use for the training. It can be either “cpu”, “mps”, or “cuda”. |
None
|
devices |
str or int
|
The number of devices to use for the training/validation/testing. Default is 1. Can be “auto” or an integer. |
'auto'
|
design |
object
|
The experimental design object. Default is None. |
None
|
enable_progress_bar |
bool
|
Whether to enable the progress bar or not. |
False
|
eval |
str
|
evaluation method used in sklearn taintest.py. Can be “eval_test”, “eval_oon_score”, “train_cv” or None. Default is None. |
None
|
EXPERIMENT_NAME |
str
|
The name of the experiment. Default is None. If None, the experiment name is generated based on the current date and time. |
None
|
fun_evals |
int
|
The number of function evaluations. |
15
|
fun_repeats |
int
|
The number of function repeats during the optimization. this value does not affect the number of the repeats in the initial design (this value can be set in the design_control). Default is 1. |
1
|
horizon |
int
|
The horizon of the time series data. Default is None. |
None
|
hyperdict |
dict
|
A dictionary containing the hyperparameters. Default is None.
For example: |
None
|
infill_criterion |
str
|
Can be |
'y'
|
log_level |
int
|
log level with the following settings:
|
50
|
lower |
array
|
lower bound |
None
|
max_time |
int
|
The maximum time in minutes. |
1
|
max_surrogate_points |
int
|
The maximum number of points in the surrogate model. Default is inf. |
30
|
metric_sklearn |
object
|
The metric object from the scikit-learn library. Default is None. |
None
|
metric_sklearn_name |
str
|
The name of the metric object from the scikit-learn library. Default is None. |
None
|
noise |
bool
|
Whether the objective function is noiy or not. Default is False. Affects the repeat of the function evaluations. |
False
|
n_points |
int
|
The number of infill points to be generated by the surrogate in each iteration. |
1
|
n_samples |
int
|
The number of samples in the dataset. Default is None. |
None
|
n_total |
int
|
The total number of samples in the dataset. Default is None. |
None
|
num_nodes |
int
|
The number of GPU nodes to use for the training/validation/testing. Default is 1. |
1
|
num_workers |
int
|
The number of workers to use for the data loading. Default is 0. |
0
|
ocba_delta |
int
|
The number of additional, new points (only used if noise==True) generated by the OCBA infill criterion. Default is 0. |
0
|
oml_grace_period |
int
|
The grace period for the OML algorithm. Default is None. |
None
|
optimizer |
object
|
The optimizer object used for the search on surrogate. Default is None. |
None
|
precision |
str
|
The precision of the data. Default is “32”. Can be e.g., “16-mixed” or “16-true”. |
'32'
|
PREFIX |
str
|
The prefix of the experiment name. If the PREFIX is not None, a spotWriter that us an instance of a SummaryWriter(), is created. Default is “00”. |
'00'
|
prep_model |
object
|
The preprocessing model object. Used for river. Default is None. |
None
|
prep_model_name |
str
|
The name of the preprocessing model. Default is None. |
None
|
progress_file |
str
|
The name of the progress file. Default is None. |
None
|
save_experiment |
bool
|
Whether to save the experiment or not. Default is False. |
False
|
scaler |
object
|
The scaler object, e.g., the TorchStandard scaler from spot.utils.scaler.py. Default is None. |
None
|
scaler_name |
str
|
The name of the scaler object. Default is None. |
None
|
scenario |
str
|
The scenario to use. Default is None. Can be “river”, “sklearn”, or “lightning”. |
None
|
seed |
int
|
The seed to use for the random number generator. Default is 123. |
123
|
sigma |
float
|
The standard deviation of the noise of the objective function. |
0.0
|
show_progress |
bool
|
Whether to show the progress or not. Default is |
True
|
show_models |
bool
|
Plot model each generation.
Currently only 1-dim functions are supported. Default is |
False
|
shuffle |
bool
|
Whether the data were shuffled or not. Default is None. |
None
|
surrogate |
object
|
The surrogate model object. Default is None. |
None
|
strategy |
str
|
The strategy to use. Default is “auto”. |
'auto'
|
target_column |
str
|
The name of the target column. Default is None. |
None
|
target_type |
str
|
The type of the target column. Default is None. |
None
|
task |
str
|
The task to perform. It can be either “classification” or “regression”. Default is None. |
None
|
TENSORBOARD_CLEAN |
bool
|
Whether to clean (delete) the tensorboard folder or not. Default is False. |
False
|
tensorboard_log |
bool
|
Whether to log the tensorboard or not. Starts the SummaryWriter. Default is False. |
False
|
tensorboard_start |
bool
|
Whether to start the tensorboard or not. Default is False. |
False
|
tensorboard_stop |
bool
|
Whether to stop the tensorboard or not. Default is False. |
False
|
test |
object
|
The test data set for spotriver. Default is None. |
None
|
test_seed |
int
|
The seed to use for the test set. Default is 1234. |
1234
|
test_size |
float
|
The size of the test set. Default is 0.4, i.e., 60% of the data is used for training and 40% for testing. |
0.4
|
tkagg |
bool
|
Whether to use matplotlib TkAgg or not. Default is False. |
False
|
tolerance_x |
float
|
tolerance for new x solutions. Minimum distance of new solutions,
generated by |
0
|
train |
object
|
The training data set for spotriver. Default is None. |
None
|
upper |
array
|
upper bound |
None
|
var_name |
list
|
A list containing the name of the variables, e.g., [“x1”, “x2”]. Default is None. |
None
|
var_type |
List[str]
|
list of type information, can be either “int”, “num” or “factor”. Default is [“num”]. |
['num']
|
verbosity |
int
|
The verbosity level. Determines print output to console. Higher values result in more output. Default is 0. |
0
|
weights |
float
|
The weight coefficient of the objective function. Positive values mean minimization. If set to -1, scores that are better when maximized will be minimized, e.g, accuracy. Can be an array, so that different weights can be used for different (multiple) objectives. Default is 1.0. |
1.0
|
weight_coeff |
float
|
Determines how to weight older measures. Default is 1.0. Used in the OML algorithm eval_oml.py. Default is 0.0. |
0.0
|
weights_entry |
str
|
The weights entry used in the GUI. Default is None. |
None
|
Returns:
Name | Type | Description |
---|---|---|
fun_control |
dict
|
A dictionary containing the information about the core model, loss function, metrics, and the hyperparameters. |
Examples:
>>> from spotpython.utils.init import fun_control_init
fun_control = fun_control_init(_L_in=64, _L_out=11, num_workers=0, device=None)
fun_control
{'CHECKPOINT_PATH': 'saved_models/',
'DATASET_PATH': 'data/',
'RESULTS_PATH': 'results/',
'TENSORBOARD_PATH': 'runs/',
'_L_in': 64,
'_L_out': 11,
'_L_cond': None,
'accelerator': "auto",
'core_model': None,
'core_model_name': None,
'data': None,
'data_dir': './data',
'db_dict_name': None,
'device': None,
'devices': "auto",
'enable_progress_bar': False,
'eval': None,
'horizon': 7,
'infill_criterion': 'y',
'k_folds': None,
'loss_function': None,
'lower': None,
'max_surrogate_points': 100,
'metric_river': None,
'metric_sklearn': None,
'metric_sklearn_name': None,
'metric_torch': None,
'metric_params': {},
'model_dict': {},
'noise': False,
'n_points': 1,
'n_samples': None,
'num_workers': 0,
'ocba_delta': 0,
'oml_grace_period': None,
'optimizer': None,
'path': None,
'prep_model': None,
'prep_model_name': None,
'save_model': False,
'scenario': "lightning",
'seed': 1234,
'show_batch_interval': 1000000,
'shuffle': None,
'sigma': 0.0,
'target_column': None,
'target_type': None,
'train': None,
'test': None,
'task': 'classification',
'tensorboard_path': None,
'upper': None,
'weights': 1.0,
'writer': None}
Source code in spotpython/utils/init.py
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|
get_experiment_name(prefix='00')
¶
Returns a unique experiment name with a given prefix.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
prefix |
str
|
Prefix for the experiment name. Defaults to “00”. |
'00'
|
Returns:
Name | Type | Description |
---|---|---|
str |
str
|
Unique experiment name. |
Examples:
>>> from spotpython.utils.init import get_experiment_name
>>> get_experiment_name(prefix="00")
00_ubuntu_2021-08-31_14-30-00
Source code in spotpython/utils/init.py
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|
get_feature_names(fun_control)
¶
Get the feature names from the fun_control dictionary.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
fun_control |
dict
|
The function control dictionary. Must contain a “data_set” key. |
required |
Returns:
Type | Description |
---|---|
List[str]
|
List[str]: List of feature names. |
Raises:
Type | Description |
---|---|
ValueError
|
If “data_set” is not in fun_control. |
ValueError
|
If “data_set” is None. |
Examples:
>>> from spotpython.utils.init import get_feature_names
get_feature_names(fun_control)
Source code in spotpython/utils/init.py
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|
get_spot_tensorboard_path(experiment_name)
¶
Get the path to the spot tensorboard files.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
experiment_name |
str
|
The name of the experiment. |
required |
Returns:
Name | Type | Description |
---|---|---|
spot_tensorboard_path |
str
|
The path to the folder where the spot tensorboard files are saved. |
Examples:
>>> from spotpython.utils.init import get_spot_tensorboard_path
>>> get_spot_tensorboard_path("00_ubuntu_2021-08-31_14-30-00")
runs/spot_logs/00_ubuntu_2021-08-31_14-30-00
Source code in spotpython/utils/init.py
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|
get_tensorboard_path(fun_control)
¶
Get the path to the tensorboard files.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
fun_control |
dict
|
The function control dictionary. |
required |
Returns:
Name | Type | Description |
---|---|---|
tensorboard_path |
str
|
The path to the folder where the tensorboard files are saved. |
Examples:
>>> from spotpython.utils.init import get_tensorboard_path
>>> get_tensorboard_path(fun_control)
runs/
Source code in spotpython/utils/init.py
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|
optimizer_control_init(max_iter=1000, seed=125)
¶
Initialize optimizer_control dictionary.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
max_iter |
int
|
The maximum number of iterations. This will be used for the optimization of the surrogate model. Default is 1000. |
1000
|
seed |
int
|
The seed to use for the random number generator. Default is 125. |
125
|
Notes
- Differential evaluation uses
maxiter = 1000
and sets the number of function evaluations to (maxiter + 1) * popsize * N, which results in 1000 * 15 * k, because the default popsize is 15 and N is the number of parameters. This is already sufficient for many situations. For example, for k=2 these are 30 000 iterations. Therefore we set this value to 1000. - This value will be passed to the surrogate model in the
Spot
class.
Returns:
Name | Type | Description |
---|---|---|
optimizer_control |
dict
|
A dictionary containing the information about the optimizer. |
Source code in spotpython/utils/init.py
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|
setup_paths(tensorboard_clean)
¶
Setup paths for checkpoints, datasets, results, and tensorboard files. This function also handles cleaning the tensorboard path if specified.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
tensorboard_clean |
bool
|
If True, move the existing tensorboard folder to a timestamped backup folder to avoid overwriting old tensorboard files. |
required |
Returns:
Name | Type | Description |
---|---|---|
CHECKPOINT_PATH |
str
|
The path to the folder where the pretrained models are saved. |
DATASET_PATH |
str
|
The path to the folder where the datasets are/should be downloaded. |
RESULTS_PATH |
str
|
The path to the folder where the results (plots, csv, etc.) are saved. |
TENSORBOARD_PATH |
str
|
The path to the folder where the tensorboard files are saved. |
Examples:
>>> from spotpython.utils.init import setup_paths
>>> setup_paths(tensorboard_clean=True)
('runs/saved_models/', 'data/', 'results/', 'runs/')
Source code in spotpython/utils/init.py
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|
surrogate_control_init(log_level=50, noise=False, model_optimizer=differential_evolution, model_fun_evals=10000, min_theta=-3.0, max_theta=2.0, n_theta='anisotropic', p_val=2.0, n_p=1, optim_p=False, min_Lambda=1e-09, max_Lambda=1, seed=124, theta_init_zero=True, var_type=None, metric_factorial='canberra')
¶
Initialize surrogate_control dictionary.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
model_optimizer |
object
|
The optimizer object used for the search on surrogate. Default is differential_evolution. |
differential_evolution
|
model_fun_evals |
int
|
The number of function evaluations. This will be used for the optimization of the surrogate model. Default is 1000. |
10000
|
min_theta |
float
|
The minimum value of theta. Note that the base10-logarithm is used. Default is -3. |
-3.0
|
max_theta |
float
|
The maximum value of theta. Note that the base10-logarithm is used. Default is 3. |
2.0
|
noise |
bool
|
Whether the objective function is noisy or not. If Kriging, then a nugget is added. Default is False. Note: Will be set in the Spot class. |
False
|
n_theta |
int
|
The number of theta values. If larger than 1 or set to the string “anisotropic”, then the k theta values are used, where k is the problem dimension. This is handled in spot.py. Default is “anisotropic”. |
'anisotropic'
|
p_val |
float
|
|
2.0
|
n_p |
int
|
The number of p values. Number of p values to be used. Default is 1. |
1
|
optim_p |
bool
|
Whether to optimize p or not. |
False
|
min_Lambda |
float
|
The minimum value of lambda. Default is 1e-9. |
1e-09
|
max_Lambda |
float
|
The maximum value of lambda. Default is 1. |
1
|
seed |
int
|
The seed to use for the random number generator. |
124
|
theta_init_zero |
bool
|
Whether to initialize theta with zero or not. Default is True. |
True
|
var_type |
list
|
A list containing the type of the variables. Default is None. Note: Will be set in the Spot class. |
None
|
metric_factorial |
str
|
The metric to be used for the factorial design. Default is “canberra”. |
'canberra'
|
Returns:
Name | Type | Description |
---|---|---|
surrogate_control |
dict
|
A dictionary containing the information about the surrogate model. |
Note
- The surrogate_control dictionary is used in the Spot class. The following values
are updated in the Spot class if they are None in the surrogate_control dictionary:
noise
: If the surrogate model dictionary is passed to the Spot class, and thenoise
value isNone
, then the noise value is set in the Spot class based on the value ofnoise
in the Spot class fun_control dictionary.var_type
: Thevar_type
value is set in the Spot class based on the value ofvar_type
in the Spot class fun_control dictionary and the dimension of the problem. If the Kriging model is used as a surrogate in the Spot class, the setting from surrogate_control_init() is overwritten.n_theta
: If self.surrogate_control[“n_theta”] > 1, use k theta values, where k is the problem dimension specified in the Spot class. The problem dimension is set in the Spot class based on the length of the lower bounds.
- This value
model_fun_evals
will used for the optimization of the surrogate model, e.g., theta values. Differential evaluation usesmaxiter = 1000
and sets the number of function evaluations to (maxiter + 1) * popsize * N, which results in 1000 * 15 * k, because the default popsize is 15 and N is the number of parameters. This is already sufficient for many situations. For example, for k=2 these are 30 000 iterations. Therefore we set this value to 1000.
Source code in spotpython/utils/init.py
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