/**
* The MIT License (MIT)
*
* Copyright (c) 2014-2017 Marc de Verdelhan & respective authors (see AUTHORS)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package eu.verdelhan.ta4j.analysis.criteria;
import eu.verdelhan.ta4j.AnalysisCriterion;
import eu.verdelhan.ta4j.Strategy;
import eu.verdelhan.ta4j.TimeSeries;
import java.util.List;
/**
* An abstract analysis criterion.
*/
public abstract class AbstractAnalysisCriterion implements AnalysisCriterion {
@Override
public Strategy chooseBest(TimeSeries series, List<Strategy> strategies) {
Strategy bestStrategy = strategies.get(0);
double bestCriterionValue = calculate(series, series.run(bestStrategy));
for (int i = 1; i < strategies.size(); i++) {
Strategy currentStrategy = strategies.get(i);
double currentCriterionValue = calculate(series, series.run(currentStrategy));
if (betterThan(currentCriterionValue, bestCriterionValue)) {
bestStrategy = currentStrategy;
bestCriterionValue = currentCriterionValue;
}
}
return bestStrategy;
}
@Override
public String toString() {
String[] tokens = getClass().getSimpleName().split("(?=\\p{Lu})", -1);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < tokens.length - 1; i++) {
sb.append(tokens[i]).append(' ');
}
return sb.toString().trim();
}
}