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mod.rs
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49 lines (45 loc) · 1.69 KB
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
//! Count-Min sketch implementation for frequency estimation.
//!
//! The Count-Min sketch provides approximate frequency counts for streaming data
//! with configurable relative error and confidence bounds.
//!
//! # Usage
//!
//! ```
//! # use datasketches::countmin::CountMinSketch;
//! let mut sketch = CountMinSketch::<i64>::new(5, 256);
//! sketch.update("apple");
//! sketch.update_with_weight("banana", 3);
//! assert!(sketch.estimate("banana") >= 3);
//! ```
//!
//! # Configuration Helpers
//!
//! ```
//! # use datasketches::countmin::CountMinSketch;
//! let buckets = CountMinSketch::<i64>::suggest_num_buckets(0.01);
//! let hashes = CountMinSketch::<i64>::suggest_num_hashes(0.99);
//! let _sketch = CountMinSketch::<i64>::new(hashes, buckets);
//! ```
mod serialization;
mod sketch;
pub use self::sketch::CountMinSketch;
mod value;
pub use self::value::CountMinValue;
pub use self::value::UnsignedCountMinValue;