public override void Build(LAESA idx, int num_pivs, int num_rings, SequenceBuilder seq_builder = null)
{
if (seq_builder == null) {
seq_builder = SequenceBuilders.GetIISeq(BitmapBuilders.GetSArray());
}
base.Build (idx, num_pivs, num_rings, seq_builder);
}
public void Build(LAESA idx, int num_pivs)
{
this.DB = idx.DB;
var S = new int[num_pivs];
this.DIST = new List<double>[num_pivs];
int I = 0;
for (int pivID = 0; pivID < num_pivs; ++pivID) {
S[pivID] = pivID;
this.DIST[pivID] = idx.DIST[pivID];
I++;
}
this.PIVS = new SampleSpace("", idx.PIVS, S);
}
public virtual void Build(LAESA idx, int num_pivs, int num_rings, ListIBuilder list_builder = null)
{
// setting up MAX_SYMBOL and alpha_stddev values
{
num_rings = Math.Max (8, num_rings);
num_rings = 1 << ((int)Math.Ceiling (Math.Log (num_rings, 2)));
this.MAX_SYMBOL = num_rings - 1;
this.alpha_stddev = 8.0 / num_rings;
}
this.DB = idx.DB;
var P = (idx.PIVS as SampleSpace);
var S = new int[num_pivs];
int n = this.DB.Count;
this.STDDEV = new float[num_pivs];
this.MEAN = new float[num_pivs];
this.DIST = new IList<int>[num_pivs];
int I = 0;
Action<int> build_one_pivot = delegate(int p) {
S [p] = P.SAMPLE [p];
var D = new List<double>(idx.DIST[p]);
this.ComputeStats(D, p);
var stddev = this.STDDEV[p];
var mean = this.MEAN[p];
var L = new ListIFS(ListIFS.GetNumBits(this.MAX_SYMBOL));
for (int i = 0; i < n; ++i) {
var d = D[i];
var sym = this.Discretize(d, stddev, mean);
L.Add (sym);
}
if (list_builder == null) {
this.DIST[p] = L;
} else {
this.DIST[p] = list_builder(L, this.MAX_SYMBOL);
}
if (I % 10 == 0 ) {
Console.Write ("== advance: {0}/{1}, ", I, num_pivs);
if (I % 50 == 0) {
Console.WriteLine ();
}
}
I++;
};
Parallel.For(0, num_pivs, build_one_pivot);
this.PIVS = new SampleSpace ("", P.DB, S);
Console.WriteLine ("=== done Build CompactPivotsLRANS");
}
public virtual void Build(LAESA idx, int num_pivs, int num_rings, SequenceBuilder seq_builder = null)
{
if (seq_builder == null) {
seq_builder = SequenceBuilders.GetSeqPlain (32);
}
base.Build (idx, num_pivs, num_rings, null);
this.SEQ = new Sequence[num_pivs];
var build_one_pivot = new Action<int>(delegate(int p) {
var D = this.DIST[p];
this.SEQ[p] = seq_builder(D, this.MAX_SYMBOL+1);
if (p % 10 == 0 || p + 1 == num_pivs) {
Console.Write ("== advance: {0}/{1}, ", p, num_pivs);
if (p % 100 == 0 || p + 1 == num_pivs) {
Console.WriteLine ();
}
}
});
Parallel.For(0, num_pivs, build_one_pivot);
this.EmulateDIST();
}
public void BuildLAESA(IList<LC_RNN> indexlist, int max_instances = 0, int num_pivs = 0, SequenceBuilder seq_builder = null)
{
base.Build (indexlist, max_instances, seq_builder);
var laesa = new LAESA ();
if (num_pivs == 0) {
laesa.Build (this.DB, this.LC_LIST.Count);
} else {
laesa.Build (this.DB, num_pivs);
}
}
public override void Build(LAESA idx, int num_pivs, int num_rings, ListIBuilder list_builder)
{
throw new NotSupportedException("This method should not be used on this specilized class");
}
public static string ExecuteLAESA(IndexArgumentSetup setup, string nick, int numpivs)
{
var idxname = String.Format ("{0}/Index.LAESA.{1}", nick, numpivs);
return Execute (setup, nick, idxname, (db) => {
LAESA laesa = new LAESA ();
laesa.Build (db, numpivs, setup.CORES);
return laesa;
});
}
