Example #1
0
 // Make vector templates for all output frame vectors
 private Vec[][] makeTemplates(Frame dataset, float[] ratios) {
   Vec anyVec = dataset.anyVec();
   final long[][] espcPerSplit = computeEspcPerSplit(anyVec._espc, anyVec.length(), ratios);
   final int num = dataset.numCols(); // number of columns in input frame
   final int nsplits = espcPerSplit.length; // number of splits
   final String[][] domains = dataset.domains(); // domains
   Vec[][] t = new Vec[nsplits][ /*num*/]; // resulting vectors for all
   for (int i = 0; i < nsplits; i++) {
     // vectors for j-th split
     t[i] = new Vec(Vec.newKey(), espcPerSplit[i /*-th split*/]).makeZeros(num, domains);
   }
   return t;
 }
 public static Key makeByteVec(Key k, String... data) {
   byte[][] chunks = new byte[data.length][];
   long[] espc = new long[data.length + 1];
   for (int i = 0; i < chunks.length; ++i) {
     chunks[i] = data[i].getBytes();
     espc[i + 1] = espc[i] + data[i].length();
   }
   Futures fs = new Futures();
   Key key = Vec.newKey();
   ByteVec bv = new ByteVec(key, Vec.ESPC.rowLayout(key, espc));
   for (int i = 0; i < chunks.length; ++i) {
     Key chunkKey = bv.chunkKey(i);
     DKV.put(
         chunkKey,
         new Value(chunkKey, chunks[i].length, chunks[i], TypeMap.C1NCHUNK, Value.ICE),
         fs);
   }
   DKV.put(bv._key, bv, fs);
   Frame fr = new Frame(k, new String[] {"makeByteVec"}, new Vec[] {bv});
   DKV.put(k, fr, fs);
   fs.blockForPending();
   return k;
 }