| /* |
| * Copyright 2016, Yahoo! Inc. Licensed under the terms of the Apache License 2.0. See LICENSE file |
| * at the project root for terms. |
| */ |
| |
| /** |
| * Pig UDFs for Frequent Items sketch. |
| * This includes generic implementation in the form of abstract classes DataToFrequentItemsSketch |
| * and UnionFrequentItemsSketch to be specialized for particular types of items. |
| * An implementation for strings is provided: DataToFrequentStringsSketch and UnionFrequentStringsSketch. |
| * FrequentStringsSketchToEstimates is to obtain results from sketches. |
| * |
| * @author Alexander Saydakov |
| */ |
| package com.yahoo.sketches.pig.frequencies; |
