org.apache.mahout.math.indexeddataset
Factory method, creates the extending class and returns a new instance
Write a text delimited file(s) with the row and column IDs from dictionaries.
Write a text delimited file(s) with the row and column IDs from dictionaries.
write location, usually a directory
params to control writing
the org.apache.mahout.math.drm.DistributedContext used to do a distributed write
Adds the equivalent of blank rows to the sparse CheckpointedDrm, which only changes the row cardinality value.
Adds the equivalent of blank rows to the sparse CheckpointedDrm, which only changes the row cardinality value. No changes are made to the underlying drm.
number to use for new row cardinality, should be larger than current
a new IndexedDataset or extending class with new cardinality
should be done before any optimizer actions are performed on the matrix or you'll get unpredictable results.
Wrap an org.apache.mahout.math.drm.DrmLike with bidirectional ID mappings org.apache.mahout.math.indexeddataset.BiDictionary so a user specified labels/IDs can be stored and mapped to and from the Mahout Int ID used internal to Mahout core code.
Often no need for both or perhaps either dictionary, so save resources by allowing to be not created when not needed.