Uses of Class
org.grouplens.lenskit.vectors.SparseVector

Packages that use SparseVector

Package	Description
org.grouplens.lenskit.scored	Associate IDs with scores.
org.grouplens.lenskit.vectors	Vectors (both sparse and dense) and their operations.

Uses of SparseVector in org.grouplens.lenskit.scored

Methods in org.grouplens.lenskit.scored with parameters of type SparseVector

Modifier and Type	Method and Description
static FastCollection<ScoredId>	ScoredIds.collectionFromVector(SparseVector vector) View a vector as a FastCollection of ScoredId objects.

Uses of SparseVector in org.grouplens.lenskit.vectors

Subclasses of SparseVector in org.grouplens.lenskit.vectors

Modifier and Type	Class and Description
class	ImmutableSparseVector Immutable sparse vectors.
class	MutableSparseVector Mutable version of sparse vector.

Methods in org.grouplens.lenskit.vectors that return SparseVector

Modifier and Type	Method and Description
abstract SparseVector	SparseVector.getChannelVector(Symbol channelSymbol) Get the vector associated with a particular unboxed channel.
SparseVector	VectorEntry.getVector() Get the sparse vector associated with this entry.
SparseVector	MutableSparseVector.removeChannelVector(Symbol channelSymbol) Remove the channel stored under a particular symbol.

Methods in org.grouplens.lenskit.vectors with parameters of type SparseVector

Modifier and Type	Method and Description
void	MutableSparseVector.add(SparseVector other) Add another rating vector to this one.
int	SparseVector.countCommonKeys(SparseVector o) Count the common keys between two vectors.
double	SparseVector.dot(SparseVector o) Compute the dot product between two vectors.
static Iterable<org.apache.commons.lang3.tuple.Pair<VectorEntry,VectorEntry>>	Vectors.fastIntersect(SparseVector v1, SparseVector v2) Iterate over the intersection of two vectors without the overhead of object creation.
static Iterable<org.apache.commons.lang3.tuple.ImmutablePair<VectorEntry,VectorEntry>>	Vectors.intersect(SparseVector v1, SparseVector v2) Iterate over the intersection of two vectors - they keys they have in common.
void	MutableSparseVector.multiply(SparseVector other) Multiply each element in the vector by the corresponding element in another vector.
void	MutableSparseVector.set(SparseVector other) Set the values in this SparseVector to equal the values in for each key that is present in both vectors.
void	MutableSparseVector.subtract(SparseVector other) Subtract another rating vector from this one.