Utility routines for multi-core algorithms. More...

Static Public Member Functions
static IList< IList< int > >	PartitionIndices (this IDataSet dataset, int num_groups)
	Partition the indices of a dataset into groups.
static IList< int >[,]	PartitionUsersAndItems (this IDataSet dataset, int num_groups)
	Partition dataset user- and item-wise for parallel processing.

Detailed Description

Utility routines for multi-core algorithms.

Member Function Documentation

static IList<IList<int> > PartitionIndices	(	this IDataSet	dataset,
		int	num_groups
	)		`[inline, static]`

Partition the indices of a dataset into groups.

Parameters:

dataset	a dataset
num_groups	the number of groups

static IList<int> [,] PartitionUsersAndItems	(	this IDataSet	dataset,
		int	num_groups
	)		`[inline, static]`

Partition dataset user- and item-wise for parallel processing.

Literature:

Rainer Gemulla, Peter J. Haas, Erik Nijkamp, Yannis Sismanis: Large-Scale Matrix Factorization with Distributed Stochastic Gradient Descent. KDD 2011. http://www.mpi-inf.mpg.de/~rgemulla/publications/gemulla11dsgd.pdf

Returns:: a two-dimensional array of index lists, each entry corresponds to one block entry

Parameters:

dataset	a feedback dataset
num_groups	the number of groups both users and items are partitioned into

The documentation for this class was generated from the following file: