/*
* Copyright 2019 Google LLC
*
* Licensed 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
*
* https://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.
*/
// Common message for cardinality estimation stats.
syntax = "proto2";
package zetasketch;
option java_package = "com.google.protos.zetasketch";
message UniqueStatsProto {
// The estimated number of unique elements in the input set.
optional int64 estimated_cardinality = 1;
// The expected error of the estimation algorithm.
optional double expected_error = 2;
}