public void BlockEnumerator_Next_WithInputShorterThatBlockSize_ReturnsFalse()
{
var enumerator = new BlockEnumerator <int>(new int[] { 1, 2, 3 }, 4);
bool result = enumerator.Next();
Assert.That(result, Is.False);
}
public void BlockEnumerator_Next_WithEmptyInput_ReturnsFalse()
{
var enumerator = new BlockEnumerator <int>(new int[0], 1);
bool result = enumerator.Next();
Assert.That(result, Is.False);
}
public IEnumerator <KeyValuePair <string, long> > GetEnumerator()
{
if (m_enumerator != null)
{
throw new NotSupportedException("Cannot read block stream twice");
}
return(m_enumerator = new BlockEnumerator(m_compression, m_filename));
}
public KeyValuePair <string, long> ReadVolumeProps()
{
if (m_enumerator == null)
{
m_enumerator = (BlockEnumerator)this.GetEnumerator();
}
return(m_enumerator.ReadVolumeProps());
}
public void Learn(IEnumerable <T> seq)
{
Guard.NotNull(seq, nameof(seq));
var enumerator = new BlockEnumerator <T>(seq, 2);
while (enumerator.Next())
{
T first = enumerator.CurrentBlock[0];
T second = enumerator.CurrentBlock[1];
_states[first].Links[_states[second]] += 1;
}
}
public void Learn(IEnumerable <T> seq)
{
Guard.NotNull(seq, nameof(seq));
var enumerator = new BlockEnumerator <T>(seq, _order + 1);
while (enumerator.Next())
{
T[] first = enumerator.CurrentBlock.Take(_order).ToArray();
T[] second = enumerator.CurrentBlock.Skip(1).Take(_order).ToArray();
#warning Storing the last item of the key in the MArkov state may not be appropriate for order > 1
_states[first].Links[_states[second]] += 1;
}
}
public void BlockEnumerator_Next_WithInputLongerThatBlockSize_EnumeratesByBlock()
{
var enumerator = new BlockEnumerator <int>(new[] { 1, 2, 3, 4, 5 }, 2);
Assert.That(enumerator.Next(), Is.True);
Assert.That(enumerator.CurrentBlock, Is.EquivalentTo(new[] { 1, 2 }));
Assert.That(enumerator.Next(), Is.True);
Assert.That(enumerator.CurrentBlock, Is.EquivalentTo(new[] { 2, 3 }));
Assert.That(enumerator.Next(), Is.True);
Assert.That(enumerator.CurrentBlock, Is.EquivalentTo(new[] { 3, 4 }));
Assert.That(enumerator.Next(), Is.True);
Assert.That(enumerator.CurrentBlock, Is.EquivalentTo(new[] { 4, 5 }));
Assert.That(enumerator.Next(), Is.False);
Assert.That(enumerator.CurrentBlock, Is.Null);
}
