deepmd.pd.utils.neighbor_stat

Classes

NeighborStatOP	Class for getting neighbor statistics data information.
NeighborStat	Neighbor statistics using pure NumPy.

Module Contents

class deepmd.pd.utils.neighbor_stat.NeighborStatOP(ntypes: int, rcut: float, mixed_types: bool)

Bases: paddle.nn.Layer

Class for getting neighbor statistics data information.

Parameters:

ntypes

The num of atom types

rcut

The cut-off radius

mixed_typesbool, optional

If True, treat neighbors of all types as a single type.

rcut

ntypes

mixed_types

forward(coord: paddle.Tensor, atype: paddle.Tensor, cell: paddle.Tensor | None) → tuple[paddle.Tensor, paddle.Tensor]

Calculate the neareest neighbor distance between atoms, maximum nbor size of atoms and the output data range of the environment matrix.

Parameters:

coord

The coordinates of atoms.

atype

The atom types.

cell

The cell.

Returns:

paddle.Tensor

The minimal squared distance between two atoms, in the shape of (nframes,)

paddle.Tensor

The maximal number of neighbors

class deepmd.pd.utils.neighbor_stat.NeighborStat(ntypes: int, rcut: float, mixed_type: bool = False)

Bases: deepmd.utils.neighbor_stat.NeighborStat

Neighbor statistics using pure NumPy.

Parameters:

ntypesint

The num of atom types

rcutfloat

The cut-off radius

mixed_typebool, optional, default=False

Treat all types as a single type.

op

auto_batch_size

iterator(data: deepmd.utils.data_system.DeepmdDataSystem) → collections.abc.Iterator[tuple[numpy.ndarray, float, str]]

Abstract method for producing data.

Yields:

np.ndarray

The maximal number of neighbors

float

The squared minimal distance between two atoms

str

The directory of the data system

_execute(coord: numpy.ndarray, atype: numpy.ndarray, cell: numpy.ndarray | None) → tuple[numpy.ndarray, numpy.ndarray]

Execute the operation.

Parameters:

coord

The coordinates of atoms.

atype

The atom types.

cell

The cell.