secretflow.data.mix#

Classes:

`MixDataFrame`([partitions])	Mixed DataFrame consisting of HDataFrame/VDataFrame.
`PartitionWay`(value)	The partitioning.

class secretflow.data.mix.MixDataFrame(partitions: Optional[Tuple[Union[HDataFrame, VDataFrame]]] = None)[source]#

Bases: object

Mixed DataFrame consisting of HDataFrame/VDataFrame.

MixDataFrame provides two perspectives based on how the data is partitioned. Let’s illustrate with an example, assuming the following partitions: alice_part0, alice_part1, bob, carol, dave_part0/dave_part1.

Among them, (alice_part0, bob, dave_part0) is aligned, (alice_part1, carol, dave_part1) is aligned.

col1	col2, col3	col4, col5
alice_part0	bob	dave_part0
alice_part1	carol	dave_part1

1. If horizontal partitioned(PartitionWay.HORIZONTAL), the perspective of the mixed DataFrame is as follows:

col1, col2, col3, col4, col5

alice_part0, bob, dave_part0

alice_part1, carol, dave_part1

2. If vertical partitioned(PartitionWay.VERTICAL), the perspective of the mixed DataFrame is as follows:

col1	col2, col3	col4, col5
alice_part0 alice_part1	bob carol	dave_part0 dave_part1

MixDataFrame has the following characteristics.

1. Multiple Partitions corresponding to a column can be provided by different parties or by the same party.

The number of Partitions corresponding to each column is the same
The number of aligned Partition samples is the same.

Attributes:

`partitions`	The blocks that make up a mixed DataFrame.
`partition_way`	Data partitioning.
`values`
`dtypes`	Returns the dtypes in the DataFrame.
`columns`	The column labels of the DataFrame.
`shape`	Returns a tuple representing the dimensionality of the DataFrame.

Methods:

`mean`(args, *kwargs)	Returns the mean of the values over the requested axis.
`min`(args, *kwargs)	Returns the min of the values over the requested axis.
`max`(args, *kwargs)	Returns the max of the values over the requested axis.
`count`(args, *kwargs)	Count non-NA cells for each column or row.
`isna`()
`quantile`([q, axis])
`kurtosis`(args, *kwargs)
`skew`(args, *kwargs)
`sem`(args, *kwargs)
`std`(args, *kwargs)
`var`(args, *kwargs)
`astype`(dtype[, copy, errors])	Cast object to a specified dtype `dtype`.
`copy`()	Shallow copy of this dataframe.
`drop`([labels, axis, index, columns, level, ...])	Drop specified labels from rows or columns.
`fillna`([value, method, axis, inplace, ...])	Fill NA/NaN values using the specified method.
`__init__`([partitions])

partitions: Tuple[Union[HDataFrame, VDataFrame]] = None#: The blocks that make up a mixed DataFrame. Shall all be HDataFrame or VDataFrame, and shall not be mixed.

property partition_way: PartitionWay#: Data partitioning.

mean(*args, **kwargs) → Series[source]#

Returns the mean of the values over the requested axis.

All arguments are same with pandas.DataFrame.mean().

Returns:: pd.Series

min(*args, **kwargs) → Series[source]#

Returns the min of the values over the requested axis.

All arguments are same with pandas.DataFrame.min().

Returns:: pd.Series

max(*args, **kwargs) → Series[source]#

Returns the max of the values over the requested axis.

All arguments are same with pandas.DataFrame.max().

Returns:: pd.Series

count(*args, **kwargs) → Series[source]#

Count non-NA cells for each column or row.

All arguments are same with pandas.DataFrame.count().

Returns:: pd.Series

isna()[source]#

quantile(q=0.5, axis=0)[source]#

kurtosis(*args, **kwargs)[source]#

skew(*args, **kwargs)[source]#

sem(*args, **kwargs)[source]#

std(*args, **kwargs)[source]#

var(*args, **kwargs)[source]#

property values#

property dtypes: Series#

Returns the dtypes in the DataFrame.

Returns:: the data type of each column.
Return type:: pd.Series

astype(dtype, copy: bool = True, errors: str = 'raise')[source]#

Cast object to a specified dtype dtype.

All args are same as pandas.DataFrame.astype().

property columns#: The column labels of the DataFrame.

property shape: Tuple#: Returns a tuple representing the dimensionality of the DataFrame.

copy() → MixDataFrame[source]#

Shallow copy of this dataframe.

Returns:: MixDataFrame.

drop(labels=None, axis=0, index=None, columns=None, level=None, inplace=False, errors='raise') → Optional[MixDataFrame][source]#

Drop specified labels from rows or columns.

All arguments are same with pandas.DataFrame.drop().

Returns:: MixDataFrame without the removed index or column labels or None if inplace=True.

fillna(value=None, method=None, axis=None, inplace=False, limit=None, downcast=None) → Optional[MixDataFrame][source]#

Fill NA/NaN values using the specified method.

All arguments are same with pandas.DataFrame.fillna().

Returns:: MixDataFrame with missing values filled or None if inplace=True.

__init__(partitions: Optional[Tuple[Union[HDataFrame, VDataFrame]]] = None) → None#

class secretflow.data.mix.PartitionWay(value)[source]#

Bases: Enum

The partitioning. HORIZONTAL: horizontal partitioning. VERATICAL: vertical partitioning.

Attributes:

`HORIZONTAL`
`VERTICAL`

HORIZONTAL = 'horizontal'#

VERTICAL = 'vertical'#