ExampleIndividualizedScoringParametersPerPerson.java

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package tutorial.programming.individualizedScoringParameters;

import com.google.inject.Inject;
import org.matsim.api.core.v01.Id;
import org.matsim.api.core.v01.Scenario;
import org.matsim.api.core.v01.population.Person;
import org.matsim.core.scoring.functions.CharyparNagelScoringParameters;
import org.matsim.core.scoring.functions.CharyparNagelScoringParametersForPerson;

import java.util.HashMap;
import java.util.Map;

public class ExampleIndividualizedScoringParametersPerPerson implements CharyparNagelScoringParametersForPerson {
    private final Scenario scenario;

    // For avoiding re-generating the parameters at each call, we store them in a map once created.
    private Map<Id<Person>,CharyparNagelScoringParameters> cache = new HashMap<>();

    @Inject
    public ExampleIndividualizedScoringParametersPerPerson( final Scenario scenario ) {
        this.scenario = scenario;
    }

    @Override
    public CharyparNagelScoringParameters getScoringParameters(Person person) {
        if ( cache.containsKey( person.getId() ) ) return cache.get( person.getId() );

        final CharyparNagelScoringParameters.Builder builder = new CharyparNagelScoringParameters.Builder(scenario, person.getId());

        // tune. Here hard-coded for lisibility, but should be computed/read from person attributes.
        builder.getActivityParameters( "h" ).setTypicalDuration_s( 8 * 3600 );
        builder.getModeParameters( "car" ).setMarginalUtilityOfTraveling_s( -6 );

        final CharyparNagelScoringParameters parameters = builder.build();
        cache.put( person.getId() , parameters );
        return parameters;
    }
}