public Runtime[] Partition(params int[] points)
{
if (points == null || points.Length == 0)
{
throw new ArgumentNullException("points");
}
var ends = points.Concat(new [] { NumInstances }).ToArray();
var atts = EnumerateAttributes.Select(a => a.Impl).ToArrayList();
var start = 0;
var cumm = 0;
var partitioned = ends.
Select(end => {
var name = String.Format("partition-{0}-{1}", start, end);
var instance = new Instances(name, atts, end - start);
instance.setClassIndex(ClassIndex);
for (int i = start; i < end; i++)
{
cumm++; instance.add(Instance(i).Impl);
}
start = end;
return(new Runtime(instance));
}).
ToArray();
if (cumm != NumInstances)
{
throw new ApplicationException("Partition did not work as expected. Expected " + NumInstances + " instances to be copied, actually got: " + cumm);
}
return(partitioned);
}
// weka.core.converters.CSVSaver throws exception
public void SaveToCsvFile(string filename)
{
var headings = String.Join(",", EnumerateAttributes.Select(a => a.Name));
var idxs = Enumerable.Range(0, NumAttributes);
var lines = this.Select(i => String.Join(",", idxs.Select(i.StringValue))).ToList();
lines.Insert(0, headings);
File.WriteAllLines(filename, lines);
}
public IEnumerator <PmlAttribute> GetEnumerator()
{
return(EnumerateAttributes.GetEnumerator());
}