io.github.ericmedvet.jgea.experimenter.builders.UnivariateRegressionProblems Maven / Gradle / Ivy

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/*-
 * ========================LICENSE_START=================================
 * jgea-experimenter
 * %%
 * Copyright (C) 2018 - 2023 Eric Medvet
 * %%
 * 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.
 * =========================LICENSE_END==================================
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package io.github.ericmedvet.jgea.experimenter.builders;

import io.github.ericmedvet.jgea.problem.regression.ListNumericalDataset;
import io.github.ericmedvet.jgea.problem.regression.NumericalDataset;
import io.github.ericmedvet.jgea.problem.regression.univariate.UnivariateRegressionFitness;
import io.github.ericmedvet.jgea.problem.regression.univariate.UnivariateRegressionProblem;
import io.github.ericmedvet.jgea.problem.regression.univariate.synthetic.*;
import io.github.ericmedvet.jnb.core.Param;
import java.io.IOException;
import java.util.List;
import java.util.function.Supplier;

public class UnivariateRegressionProblems {
  private UnivariateRegressionProblems() {}

  @SuppressWarnings("unused")
  public static UnivariateRegressionProblem bundled(
      @Param("name") String name,
      @Param(value = "metric", dS = "mse") UnivariateRegressionFitness.Metric metric) {
    NumericalDataset dataset;
    try {
      dataset =
          switch (name) {
            case "concrete" -> ListNumericalDataset.loadFromCSVResource(
                "/datasets/regression/concrete.csv", "strength");
            case "xor" -> ListNumericalDataset.loadFromCSVResource(
                "/datasets/regression/xor.csv", "y");
            default -> throw new IllegalArgumentException(
                "Unknown bundled dataset: %s".formatted(name));
          };
    } catch (IOException e) {
      throw new IllegalArgumentException("Cannot load bundled dataset: %s".formatted(name));
    }
    return switch (name) {
      case "concrete" -> new UnivariateRegressionProblem<>(
          new UnivariateRegressionFitness(dataset.folds(List.of(0, 1, 2, 3), 5), metric),
          new UnivariateRegressionFitness(dataset.folds(List.of(4), 5), metric));
      case "xor" -> new UnivariateRegressionProblem<>(
          new UnivariateRegressionFitness(dataset, metric),
          new UnivariateRegressionFitness(dataset, metric));
      default -> throw new IllegalArgumentException("Unknown bundled dataset: %s".formatted(name));
    };
  }

  @SuppressWarnings("unused")
  public static UnivariateRegressionProblem fromData(
      @Param("trainingDataset") Supplier trainingDataset,
      @Param(value = "testDataset", dNPM = "ea.d.num.empty()")
          Supplier testDataset,
      @Param(value = "metric", dS = "mse") UnivariateRegressionFitness.Metric metric) {
    return new UnivariateRegressionProblem<>(
        new UnivariateRegressionFitness(trainingDataset.get(), metric),
        testDataset != null ? new UnivariateRegressionFitness(testDataset.get(), metric) : null);
  }

  @SuppressWarnings("unused")
  public static SyntheticUnivariateRegressionProblem synthetic(
      @Param("name") String name,
      @Param(value = "metric", dS = "mse") UnivariateRegressionFitness.Metric metric,
      @Param(value = "seed", dI = 1) int seed) {
    return switch (name) {
      case "keijzer6" -> new Keijzer6(metric);
      case "nguyen7" -> new Nguyen7(metric, seed);
      case "pagie1" -> new Pagie1(metric);
      case "polynomial4" -> new Polynomial4(metric);
      case "vladislavleva4" -> new Vladislavleva4(metric, seed);
      case "xor" -> new Xor(metric);
      default -> throw new IllegalArgumentException(
          "Unknown synthetic function: %s".formatted(name));
    };
  }
}