"""
Common functions for all models.
"""
from typing import Any, List
[docs]
def _unary_minus(number: float) -> float:
"""
Takes value of a number and makes it negative.
:param number: A number to convert.
:return: Converted number.
"""
return -number
[docs]
def _matrix_transpose(matrix: List[List[Any]]) -> List[List[Any]]:
"""
Transpose a matrix.
:param matrix: A matrix in the form of a list of lists.
:return: A transposed matrix.
"""
return [list(row) for row in zip(*matrix)]
[docs]
def _normalize(
vector: List[float], target_minimum: float, target_maximum: float
) -> List[float]:
"""
Normalizes a vector to a target range of values.
:param vector: A vector to normalize.
:param target_minimum: Minimum value to scale the values between.
:param target_maximum: Maximum value to scale the values between.
:return: Normalized vector.
"""
if len(vector) == 1:
return [target_maximum]
source_minimum = min(vector)
source_maximum = max(vector)
source_range = source_maximum - source_minimum
target_range = target_maximum - target_minimum
if source_range == 0:
source_range = 0.0001
scaled_vector = [
((((value - source_minimum) / source_range) * target_range) + target_minimum)
for value in vector
]
return scaled_vector
openskill.py