org.apache.mahout.math

indexeddataset

package indexeddataset

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Type Members

  1. class BiDictionary extends BiMap[String, Int]

    BiDictionary is a specialized BiMap that has non-negative Ints as values for use as DRM keys

  2. class BiMap[K, V] extends Serializable

    Immutable Bi-directional Map.

  3. trait IndexedDataset extends AnyRef

    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.

  4. trait Reader[T] extends AnyRef

    Reader trait is abstract in the sense that the elementReader and rowReader functions must be supplied by an extending trait, which also defines the type to be read.

  5. class Schema extends HashMap[String, Any]

    Syntactic sugar for mutable.

  6. trait Writer[T] extends AnyRef

    Writer trait is abstract in the sense that the writer method must be supplied by an extending trait, which also defines the type to be written.

Value Members

  1. object BiDictionary extends Serializable

    BiDictionary is a specialized BiMap that has non-negative Ints as values for use as DRM keys.

  2. object BiMap extends Serializable

  3. object DefaultIndexedDatasetElementReadSchema extends Schema

    Simple default Schema for typical text delimited element file input This tells the reader to input elements of the default (rowID<comma, tab, or space>columnID <comma, tab, or space>here may be other ignored text.

  4. object DefaultIndexedDatasetReadSchema extends Schema

    Default Schema for typical text delimited org.apache.mahout.math.indexeddataset.IndexedDataset file row-wise input.

  5. object DefaultIndexedDatasetWriteSchema extends Schema

    Default Schema for text delimited org.apache.mahout.math.indexeddataset.IndexedDataset file output with one row per line.

  6. object IndexedDatasetReadBooleanSchema extends Schema

    Default Schema for reading a text delimited org.apache.mahout.math.indexeddataset.IndexedDataset file where the score of any element is ignored.

  7. object IndexedDatasetWriteBooleanSchema extends Schema

    Default Schema for typical text delimited org.apache.mahout.math.indexeddataset.IndexedDataset file output where the score of a element is omitted.

  8. def indexedDatasetDFSRead(src: String, schema: Schema = DefaultIndexedDatasetReadSchema, existingRowIDs: Option[BiDictionary] = None)(implicit ctx: DistributedContext): IndexedDataset

    Load IndexedDataset from text delimited files

  9. def indexedDatasetDFSReadElements(src: String, schema: Schema = DefaultIndexedDatasetReadSchema, existingRowIDs: Option[BiDictionary] = None)(implicit ctx: DistributedContext): IndexedDataset

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