/** * Reduces the accuracy of the HLL provided to a smaller size * @param p0 * - new p size for the new HyperLogLog (smaller or no change) * @return reduced (or same) HyperLogLog instance */ public HyperLogLog squash(final int p0) { if (p0 > p) { throw new IllegalArgumentException( "HyperLogLog cannot be be squashed to be bigger. Current: " + toString() + " Provided: " + p0); } if (p0 == p) { return this; } final HyperLogLog hll = new HyperLogLogBuilder() .setNumRegisterIndexBits(p0).setEncoding(EncodingType.DENSE) .enableNoBias(noBias).build(); final HLLDenseRegister result = hll.denseRegister; if (encoding == EncodingType.SPARSE) { sparseRegister.extractLowBitsTo(result); } else if (encoding == EncodingType.DENSE) { denseRegister.extractLowBitsTo(result); } return hll; }
/** * Reduces the accuracy of the HLL provided to a smaller size * @param p0 * - new p size for the new HyperLogLog (smaller or no change) * @return reduced (or same) HyperLogLog instance */ public HyperLogLog squash(final int p0) { if (p0 > p) { throw new IllegalArgumentException( "HyperLogLog cannot be be squashed to be bigger. Current: " + toString() + " Provided: " + p0); } if (p0 == p) { return this; } final HyperLogLog hll = new HyperLogLogBuilder() .setNumRegisterIndexBits(p0).setEncoding(EncodingType.DENSE) .enableNoBias(noBias).build(); final HLLDenseRegister result = hll.denseRegister; if (encoding == EncodingType.SPARSE) { sparseRegister.extractLowBitsTo(result); } else if (encoding == EncodingType.DENSE) { denseRegister.extractLowBitsTo(result); } return hll; }
public static HyperLogLogBuilder builder() { return new HyperLogLogBuilder(); }
public static HyperLogLogBuilder builder() { return new HyperLogLogBuilder(); }