i am using version mahout 7.0 On Mon, Jan 14, 2013 at 10:15 AM, Ted Dunning <[email protected]> wrote:
> Which version are you using? > > (this misbehavior sounds familiar) > > iterator() should return all values. > > iterateNonZero() is allowed to skip zeros. > > On Mon, Jan 14, 2013 at 6:11 AM, Koert Kuipers <[email protected]> wrote: > > > i am looking at the iterators for DenseVector, RandomAcccessSparseVector > > and SequentialAccessSparseVector. > > > > for both DenseVector and RandomAcccessSparseVector the iterator seems to > > return all values, including the missing zero values. > > for SequentialAccessSparseVector the iterator also returns all values, > but > > only up to the last non-missing value! > > > > is this by design? what is a vector iterator supposed to return exactly? > i > > can't see a logical pattern/consistency. see examples below. > > thanks! koert > > > > scala> val x = new org.apache.mahout.math.RandomAccessSparseVector(5) > > x: org.apache.mahout.math.RandomAccessSparseVector = {} > > > > scala> x.set(3, 1.0) > > > > scala> for (item <- x.iterator.asScala) println((item.index, item.get)) > > (0,0.0) > > (1,0.0) > > (2,0.0) > > (3,1.0) > > (4,0.0) > > > > scala> val y = new org.apache.mahout.math.SequentialAccessSparseVector(5) > > y: org.apache.mahout.math.SequentialAccessSparseVector = { > > > > scala> y.set(3, 1.0) > > > > scala> for (item <- y.iterator.asScala) println((item.index, item.get)) > > (0,0.0) > > (1,0.0) > > (2,0.0) > > (3,1.0) > > >
