@syntest/core
Version:
The common core of the SynTest Framework
100 lines • 4.01 kB
JavaScript
;
/*
* Copyright 2020-2021 Delft University of Technology and SynTest contributors
*
* This file is part of SynTest Framework - SynTest Core.
*
* 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
*
* 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.
*/
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.RandomSearchFactory = exports.RandomSearch = void 0;
const SearchAlgorithm_1 = require("./SearchAlgorithm");
const SimpleObjectiveManager_1 = require("../objective/managers/SimpleObjectiveManager");
/**
* Random Search algorithm that adds new encodings when these explore a new area of the search domain.
*
* @author Mitchell Olsthoorn
*/
class RandomSearch extends SearchAlgorithm_1.SearchAlgorithm {
/**
* Constructor.
*
* @param eventManager The event manager
* @param encodingSampler The encoding sampler
* @param runner The encoding execution runner
*/
constructor(eventManager, objectiveManager, encodingSampler) {
super(eventManager, objectiveManager);
this._encodingSampler = encodingSampler;
}
/**
* @inheritDoc
* @protected
*/
_initialize(
// eslint-disable-next-line @typescript-eslint/no-unused-vars
budgetManager,
// eslint-disable-next-line @typescript-eslint/no-unused-vars
terminationManager
// eslint-disable-next-line @typescript-eslint/no-empty-function
) { }
/**
* @inheritDoc
* @protected
*/
_iterate(budgetManager, terminationManager) {
return __awaiter(this, void 0, void 0, function* () {
// Sample a new random encoding
const randomEncoding = this._encodingSampler.sample();
// Evaluate the new encoding
yield this._objectiveManager.evaluateOne(randomEncoding, budgetManager, terminationManager);
});
}
}
exports.RandomSearch = RandomSearch;
/**
* Factory plugin for RandomSearch
*
* @author Dimitri Stallenberg
*/
class RandomSearchFactory {
constructor() {
this.name = "RandomSearch";
}
// This function is not implemented since it is an internal plugin
// eslint-disable-next-line @typescript-eslint/no-empty-function
register() { }
createSearchAlgorithm(options) {
if (!options.eventManager) {
throw new Error("RandomSearch requires eventManager option.");
}
if (!options.encodingSampler) {
throw new Error("RandomSearch requires encodingSampler option.");
}
if (!options.runner) {
throw new Error("RandomSearch requires runner option.");
}
return new RandomSearch(options.eventManager, new SimpleObjectiveManager_1.SimpleObjectiveManager(options.runner), options.encodingSampler);
}
}
exports.RandomSearchFactory = RandomSearchFactory;
//# sourceMappingURL=RandomSearch.js.map