Serialized Form (LensKit 2.2.1)

Package org.grouplens.lenskit
- Class org.grouplens.lenskit.RecommenderBuildException extends Exception implements Serializable
  
  serialVersionUID:
  
  1L
Package org.grouplens.lenskit.baseline
- Class org.grouplens.lenskit.baseline.ConstantItemScorer extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - value
```
double value
```
- Class org.grouplens.lenskit.baseline.GlobalMeanRatingItemScorer extends ConstantItemScorer implements Serializable
  
  serialVersionUID:
  
  1L
- Class org.grouplens.lenskit.baseline.ItemMeanRatingItemScorer extends AbstractItemScorer implements Serializable
  
  serialVersionUID:
  
  3L
  - Serialized Fields
    - itemMeans
```
ImmutableSparseVector itemMeans
```
    - globalMean
```
double globalMean
```
    - damping
```
double damping
```
- Class org.grouplens.lenskit.baseline.LeastSquaresItemScorer extends AbstractItemScorer implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - userOffsets
```
ImmutableSparseVector userOffsets
```
    - itemOffsets
```
ImmutableSparseVector itemOffsets
```
    - mean
```
double mean
```
Package org.grouplens.lenskit.basic
- Class org.grouplens.lenskit.basic.PrecomputedItemScorer extends AbstractItemScorer implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - userData
```
Long2ObjectMap<V> userData
```
Package org.grouplens.lenskit.collections
- Class org.grouplens.lenskit.collections.CompactableLongArrayList extends AbstractLongList implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialization Methods
    - readObject
```
private void readObject(ObjectInputStream in)
                 throws IOException
```
      Throws:
      
      IOException
    - writeReplace
```
private Object writeReplace()
                     throws ObjectStreamException
```
      Throws:
      
      ObjectStreamException
  - Serialized Fields
    - compactImpl
```
IntArrayList compactImpl
```
    - fullImpl
```
LongArrayList fullImpl
```
- Class org.grouplens.lenskit.collections.LongKeyDomain extends Object implements Serializable
  
  serialVersionUID:
  
  2L
  - Serialized Fields
    - domainSize
```
int domainSize
```
    - mask
```
BitSet mask
```
    - unowned
```
boolean unowned
```
Package org.grouplens.lenskit.core
- Class org.grouplens.lenskit.core.RecommenderConfigurationException extends RecommenderBuildException implements Serializable
  
  serialVersionUID:
  
  1L
Package org.grouplens.lenskit.data.dao
- Class org.grouplens.lenskit.data.dao.DataAccessException extends RuntimeException implements Serializable
  
  serialVersionUID:
  
  1L
- Class org.grouplens.lenskit.data.dao.ItemListItemDAO extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - itemSet
```
LongSortedSet itemSet
```
- Class org.grouplens.lenskit.data.dao.MapItemNameDAO extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - itemNameMap
```
Map<K,V> itemNameMap
```
    - itemIds
```
LongSortedSet itemIds
```
- Class org.grouplens.lenskit.data.dao.UserListUserDAO extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - userSet
```
LongSortedSet userSet
```
Package org.grouplens.lenskit.data.dao.packed
- Class org.grouplens.lenskit.data.dao.packed.BinaryRatingDAO extends Object implements Serializable
  
  serialVersionUID:
  
  -1L
  - Serialization Methods
    - readObject
```
private void readObject(ObjectInputStream in)
                 throws IOException
```
      Throws:
      
      IOException
    - writeReplace
```
private Object writeReplace()
```
  - Serialized Fields
    - header
```
org.grouplens.lenskit.data.dao.packed.BinaryHeader header
```
    - ratingData
```
ByteBuffer ratingData
```
    - userTable
```
org.grouplens.lenskit.data.dao.packed.BinaryIndexTable userTable
```
    - itemTable
```
org.grouplens.lenskit.data.dao.packed.BinaryIndexTable itemTable
```
- Class org.grouplens.lenskit.data.dao.packed.BinaryRatingDAO.Loader extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - dataFile
```
File dataFile
```
- Class org.grouplens.lenskit.data.dao.packed.RatingSnapshotDAO extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - delegate
```
BinaryRatingDAO delegate
```
Package org.grouplens.lenskit.data.history
- Class org.grouplens.lenskit.data.history.RatingVectorUserHistorySummarizer extends Object implements Serializable
  
  serialVersionUID:
  
  2L
Package org.grouplens.lenskit.data.pref
- Class org.grouplens.lenskit.data.pref.PreferenceDomain extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - minimum
```
double minimum
```
    - maximum
```
double maximum
```
    - precision
```
double precision
```
Package org.grouplens.lenskit.data.sql
- Class org.grouplens.lenskit.data.sql.DatabaseAccessException extends DataAccessException implements Serializable
  
  serialVersionUID:
  
  1L
Package org.grouplens.lenskit.data.text
- Class org.grouplens.lenskit.data.text.InvalidRowException extends IOException implements Serializable
  
  serialVersionUID:
  
  8282534709484877314L
- Class org.grouplens.lenskit.data.text.LikeBatchEventType extends Object implements Serializable
  
  serialVersionUID:
  
  1L
- Class org.grouplens.lenskit.data.text.LikeEventType extends Object implements Serializable
  
  serialVersionUID:
  
  1L
- Class org.grouplens.lenskit.data.text.RatingEventType extends Object implements Serializable
  
  serialVersionUID:
  
  1L
Package org.grouplens.lenskit.eval
- Class org.grouplens.lenskit.eval.ExecutionInfo extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - algoName
```
String algoName
```
    - algoAttributes
```
Map<K,V> algoAttributes
```
    - dataSet
```
TTDataSet dataSet
```
- Class org.grouplens.lenskit.eval.TaskExecutionException extends Exception implements Serializable
  
  serialVersionUID:
  
  -9073424874249517829L
Package org.grouplens.lenskit.indexes
- Class org.grouplens.lenskit.indexes.IdIndexMapping extends Object implements Serializable
  
  serialVersionUID:
  
  1L
- Class org.grouplens.lenskit.indexes.MutableIdIndexMapping extends IdIndexMapping implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - indexes
```
Long2IntMap indexes
```
    - ids
```
LongArrayList ids
```
Package org.grouplens.lenskit.inject
- Class org.grouplens.lenskit.inject.PlaceholderSatisfaction extends Object implements Serializable
  
  serialVersionUID:
  
  -1L
  - Serialization Methods
    - writeReplace
```
private Object writeReplace()
```
  - Serialized Fields
    - removedType
```
Class<T> removedType
```
Package org.grouplens.lenskit.iterative
- Class org.grouplens.lenskit.iterative.ErrorThresholdStoppingCondition extends Object implements Serializable
  
  serialVersionUID:
  
  2L
  - Serialized Fields
    - threshold
```
double threshold
```
    - minIterations
```
int minIterations
```
- Class org.grouplens.lenskit.iterative.IterationCountStoppingCondition extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - iterCount
```
int iterCount
```
- Class org.grouplens.lenskit.iterative.ThresholdStoppingCondition extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - threshold
```
double threshold
```
    - minIterations
```
int minIterations
```
Package org.grouplens.lenskit.knn.item
- Class org.grouplens.lenskit.knn.item.ItemVectorSimilarity extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - delegate
```
VectorSimilarity delegate
```
- Class org.grouplens.lenskit.knn.item.SimilaritySumNeighborhoodScorer extends Object implements Serializable
  
  serialVersionUID:
  
  1L
- Class org.grouplens.lenskit.knn.item.WeightedAverageNeighborhoodScorer extends Object implements Serializable
  
  serialVersionUID:
  
  1L
Package org.grouplens.lenskit.knn.item.model
- Class org.grouplens.lenskit.knn.item.model.ItemItemBuildContext extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - items
```
LongKeyDomain items
```
    - itemVectors
```
SparseVector[] itemVectors
```
    - userItems
```
Long2ObjectMap<V> userItems
```
- Class org.grouplens.lenskit.knn.item.model.SimilarityMatrixModel extends Object implements Serializable
  
  serialVersionUID:
  
  3L
  - Serialized Fields
    - itemDomain
```
LongKeyDomain itemDomain
```
    - neighborhoods
```
ImmutableList<E> neighborhoods
```
Package org.grouplens.lenskit.knn.user
- Class org.grouplens.lenskit.knn.user.UserSnapshot extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - users
```
LongKeyDomain users
```
    - vectors
```
List<E> vectors
```
    - normedVectors
```
List<E> normedVectors
```
    - itemUserSets
```
Long2ObjectMap<V> itemUserSets
```
- Class org.grouplens.lenskit.knn.user.UserVectorSimilarity extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - delegate
```
VectorSimilarity delegate
```
Package org.grouplens.lenskit.mf.funksvd
- Class org.grouplens.lenskit.mf.funksvd.FeatureInfo extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - feature
```
int feature
```
    - userAverage
```
double userAverage
```
    - itemAverage
```
double itemAverage
```
    - singularValue
```
double singularValue
```
    - trainingErrors
```
DoubleList trainingErrors
```
- Class org.grouplens.lenskit.mf.funksvd.FunkSVDModel extends MFModel implements Serializable
  
  serialVersionUID:
  
  3L
  - Serialized Fields
    - featureInfo
```
List<E> featureInfo
```
    - averageUser
```
mikera.vectorz.AVector averageUser
```
- Class org.grouplens.lenskit.mf.funksvd.FunkSVDUpdateRule extends Object implements Serializable
  
  serialVersionUID:
  
  2L
  - Serialized Fields
    - learningRate
```
double learningRate
```
    - trainingRegularization
```
double trainingRegularization
```
    - baseline
```
ItemScorer baseline
```
    - stoppingCondition
```
StoppingCondition stoppingCondition
```
    - domain
```
PreferenceDomain domain
```
Package org.grouplens.lenskit.mf.svd
- Class org.grouplens.lenskit.mf.svd.DomainClampingKernel extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - domain
```
PreferenceDomain domain
```
- Class org.grouplens.lenskit.mf.svd.DotProductKernel extends Object implements Serializable
  
  serialVersionUID:
  
  1L
- Class org.grouplens.lenskit.mf.svd.MFModel extends Object implements Serializable
  
  serialVersionUID:
  
  2L
  - Serialization Methods
    - readObject
```
private void readObject(ObjectInputStream input)
                 throws IOException,
                        ClassNotFoundException
```
      Throws:
      
      IOException
      
      ClassNotFoundException
    - writeObject
```
private void writeObject(ObjectOutputStream out)
                  throws IOException
```
      Throws:
      
      IOException
  - Serialized Fields
    - featureCount
```
int featureCount
```
    - userCount
```
int userCount
```
    - itemCount
```
int itemCount
```
    - userMatrix
```
mikera.matrixx.impl.ImmutableMatrix userMatrix
```
    - itemMatrix
```
mikera.matrixx.impl.ImmutableMatrix itemMatrix
```
    - userIndex
```
IdIndexMapping userIndex
```
    - itemIndex
```
IdIndexMapping itemIndex
```
Package org.grouplens.lenskit.scored
- Class org.grouplens.lenskit.scored.PackedScoredIdList extends AbstractList<ScoredId> implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialization Methods
    - readObject
```
private void readObject(ObjectInputStream in)
                 throws IOException,
                        ClassNotFoundException
```
      Do some light validation of the scored ID list.
      
      Throws:
      
      IOException
      
      ClassNotFoundException
  - Serialized Fields
    - ids
```
LongList ids
```
    - scores
```
DoubleList scores
```
    - unboxedChannels
```
Map<K,V> unboxedChannels
```
    - channels
```
Map<K,V> channels
```
Package org.grouplens.lenskit.slopeone
- Class org.grouplens.lenskit.slopeone.SlopeOneModel extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - matrix
```
Long2ObjectMap<V> matrix
```
Package org.grouplens.lenskit.symbols
- Class org.grouplens.lenskit.symbols.Symbol extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialization Methods
    - readResolve
```
private Object readResolve()
                    throws ObjectStreamException
```
      Throws:
      
      ObjectStreamException
  - Serialized Fields
    - name
```
String name
```
- Class org.grouplens.lenskit.symbols.TypedSymbol extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialization Methods
    - readResolve
```
private Object readResolve()
                    throws ObjectStreamException
```
      Throws:
      
      ObjectStreamException
  - Serialized Fields
    - type
```
Class<T> type
```
    - symbol
```
Symbol symbol
```
Package org.grouplens.lenskit.transform.clamp
- Class org.grouplens.lenskit.transform.clamp.IdentityClampingFunction extends Object implements Serializable
  
  serialVersionUID:
  
  1L
- Class org.grouplens.lenskit.transform.clamp.RatingRangeClampingFunction extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - domain
```
PreferenceDomain domain
```
Package org.grouplens.lenskit.transform.normalize
- Class org.grouplens.lenskit.transform.normalize.BaselineSubtractingUserVectorNormalizer extends AbstractUserVectorNormalizer implements Serializable
  
  serialVersionUID:
  
  3L
  - Serialized Fields
    - baselineScorer
```
ItemScorer baselineScorer
```
- Class org.grouplens.lenskit.transform.normalize.DefaultItemVectorNormalizer extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - delegate
```
VectorNormalizer delegate
```
- Class org.grouplens.lenskit.transform.normalize.DefaultUserVectorNormalizer extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - delegate
```
VectorNormalizer delegate
```
- Class org.grouplens.lenskit.transform.normalize.IdentityVectorNormalizer extends AbstractVectorNormalizer implements Serializable
  
  serialVersionUID:
  
  -6708410675383598691L
- Class org.grouplens.lenskit.transform.normalize.MeanCenteringVectorNormalizer extends AbstractVectorNormalizer implements Serializable
  
  serialVersionUID:
  
  1L
- Class org.grouplens.lenskit.transform.normalize.MeanVarianceNormalizer extends AbstractVectorNormalizer implements Serializable
  
  serialVersionUID:
  
  -7890335060797112954L
  - Serialized Fields
    - damping
```
double damping
```
    - globalVariance
```
double globalVariance
```
- Class org.grouplens.lenskit.transform.normalize.UnitVectorNormalizer extends AbstractVectorNormalizer implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - tolerance
```
double tolerance
```
Package org.grouplens.lenskit.transform.quantize
- Class org.grouplens.lenskit.transform.quantize.PreferenceDomainQuantizer extends ValueArrayQuantizer implements Serializable
  
  serialVersionUID:
  
  8258336921679357985L
  - Serialized Fields
    - domain
```
PreferenceDomain domain
```
- Class org.grouplens.lenskit.transform.quantize.ValueArrayQuantizer extends Object implements Serializable
  
  serialVersionUID:
  
  2150927895689488171L
  - Serialized Fields
    - values
```
mikera.vectorz.impl.ImmutableVector values
```
      The values to quantize to. Subclasses must not modify this array after the object has been constructed.
Package org.grouplens.lenskit.transform.threshold
- Class org.grouplens.lenskit.transform.threshold.AbsoluteThreshold extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - value
```
double value
```
- Class org.grouplens.lenskit.transform.threshold.NoThreshold extends Object implements Serializable
  
  serialVersionUID:
  
  1L
- Class org.grouplens.lenskit.transform.threshold.RealThreshold extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - thresholdValue
```
double thresholdValue
```
Package org.grouplens.lenskit.transform.truncate
- Class org.grouplens.lenskit.transform.truncate.NoOpTruncator extends Object implements Serializable
  
  serialVersionUID:
  
  1L
- Class org.grouplens.lenskit.transform.truncate.ThresholdTruncator extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - threshold
```
Threshold threshold
```
- Class org.grouplens.lenskit.transform.truncate.TopNTruncator extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - threshold
```
ThresholdTruncator threshold
```
    - n
```
int n
```
Package org.grouplens.lenskit.util
- Class org.grouplens.lenskit.util.Indexer extends Object implements Serializable
  
  serialVersionUID:
  
  -8383883342128686850L
  - Serialized Fields
    - indexes
```
Long2IntMap indexes
```
      Deprecated.
    - ids
```
LongArrayList ids
```
      Deprecated.
Package org.grouplens.lenskit.vectors
- Class org.grouplens.lenskit.vectors.ImmutableSparseVector extends SparseVector implements Serializable
  
  serialVersionUID:
  
  -2L
  - Serialized Fields
    - channelVectors
```
Map<K,V> channelVectors
```
    - channels
```
Map<K,V> channels
```
- Class org.grouplens.lenskit.vectors.ImmutableVec extends Vec implements Serializable
  
  serialVersionUID:
  
  1L
- Class org.grouplens.lenskit.vectors.MutableSparseVector extends SparseVector implements Serializable
  
  serialVersionUID:
  
  2L
  - Serialized Fields
    - channelVectors
```
Map<K,V> channelVectors
```
    - channels
```
Map<K,V> channels
```
- Class org.grouplens.lenskit.vectors.MutableVec extends Vec implements Serializable
  
  serialVersionUID:
  
  1L
- Class org.grouplens.lenskit.vectors.SparseVector extends Object implements Serializable
  
  serialVersionUID:
  
  2L
  - Serialized Fields
    - keys
```
LongKeyDomain keys
```
      The domain of keys.
    - values
```
double[] values
```
      The value array. Indexes in this array correspond to indexes produced by SparseVector.keys.
- Class org.grouplens.lenskit.vectors.Vec extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - data
```
double[] data
```
      Deprecated.
Package org.grouplens.lenskit.vectors.similarity
- Class org.grouplens.lenskit.vectors.similarity.CosineVectorSimilarity extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - dampingFactor
```
double dampingFactor
```
- Class org.grouplens.lenskit.vectors.similarity.DistanceVectorSimilarity extends Object implements Serializable
  
  serialVersionUID:
  
  1L
- Class org.grouplens.lenskit.vectors.similarity.MutualInformationVectorSimilarity extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - quantizer
```
Quantizer quantizer
```
- Class org.grouplens.lenskit.vectors.similarity.PearsonCorrelation extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - shrinkage
```
double shrinkage
```
- Class org.grouplens.lenskit.vectors.similarity.SignificanceWeightedVectorSimilarity extends Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - threshold
```
int threshold
```
    - delegate
```
VectorSimilarity delegate
```
- Class org.grouplens.lenskit.vectors.similarity.SpearmanRankCorrelation extends Object implements Serializable
  
  serialVersionUID:
  
  3023239202579332883L
  - Serialized Fields
    - pearson
```
PearsonCorrelation pearson
```

Serialized Form

Package org.grouplens.lenskit

Class org.grouplens.lenskit.RecommenderBuildException extends Exception implements Serializable

Package org.grouplens.lenskit.baseline

Class org.grouplens.lenskit.baseline.ConstantItemScorer extends Object implements Serializable

Serialized Fields

value

Class org.grouplens.lenskit.baseline.GlobalMeanRatingItemScorer extends ConstantItemScorer implements Serializable

Class org.grouplens.lenskit.baseline.ItemMeanRatingItemScorer extends AbstractItemScorer implements Serializable

Serialized Fields

itemMeans

globalMean

damping

Class org.grouplens.lenskit.baseline.LeastSquaresItemScorer extends AbstractItemScorer implements Serializable

Serialized Fields

userOffsets

itemOffsets

mean

Package org.grouplens.lenskit.basic

Class org.grouplens.lenskit.basic.PrecomputedItemScorer extends AbstractItemScorer implements Serializable

Serialized Fields

userData

Package org.grouplens.lenskit.collections

Class org.grouplens.lenskit.collections.CompactableLongArrayList extends AbstractLongList implements Serializable

Serialization Methods

readObject

writeReplace

Serialized Fields

compactImpl

fullImpl

Class org.grouplens.lenskit.collections.LongKeyDomain extends Object implements Serializable

Serialized Fields

domainSize

mask

unowned

Package org.grouplens.lenskit.core

Class org.grouplens.lenskit.core.RecommenderConfigurationException extends RecommenderBuildException implements Serializable

Package org.grouplens.lenskit.data.dao

Class org.grouplens.lenskit.data.dao.DataAccessException extends RuntimeException implements Serializable

Class org.grouplens.lenskit.data.dao.ItemListItemDAO extends Object implements Serializable

Serialized Fields

itemSet

Class org.grouplens.lenskit.data.dao.MapItemNameDAO extends Object implements Serializable

Serialized Fields

itemNameMap

itemIds

Class org.grouplens.lenskit.data.dao.UserListUserDAO extends Object implements Serializable

Serialized Fields

userSet

Package org.grouplens.lenskit.data.dao.packed

Class org.grouplens.lenskit.data.dao.packed.BinaryRatingDAO extends Object implements Serializable

Serialization Methods

readObject

writeReplace

Serialized Fields

header

ratingData

userTable

itemTable

Class org.grouplens.lenskit.data.dao.packed.BinaryRatingDAO.Loader extends Object implements Serializable

Serialized Fields

dataFile

Class org.grouplens.lenskit.data.dao.packed.RatingSnapshotDAO extends Object implements Serializable

Serialized Fields

delegate

Package org.grouplens.lenskit.data.history

Class org.grouplens.lenskit.data.history.RatingVectorUserHistorySummarizer extends Object implements Serializable

Package org.grouplens.lenskit.data.pref

Class org.grouplens.lenskit.data.pref.PreferenceDomain extends Object implements Serializable

Serialized Fields

minimum

maximum

precision

Package org.grouplens.lenskit.data.sql

Class org.grouplens.lenskit.data.sql.DatabaseAccessException extends DataAccessException implements Serializable

Package org.grouplens.lenskit.data.text

Class org.grouplens.lenskit.data.text.InvalidRowException extends IOException implements Serializable

Class org.grouplens.lenskit.data.text.LikeBatchEventType extends Object implements Serializable

Class org.grouplens.lenskit.data.text.LikeEventType extends Object implements Serializable

Class org.grouplens.lenskit.data.text.RatingEventType extends Object implements Serializable