greedydecisionmaker.java

MASON代表多主体邻里或网络仿真(Multi-Agent Simulator of Neighborhoods or Networks)。它是乔治梅森大学用Java开发的离散事件多主体仿真核心库

package sim.app.antsforage;

import sim.engine.SimState;

public /*strictfp*/ class GreedyDecisionMaker extends DecisionMaker
    {
    public DecisionInfo getHomeDecision( final SimState state )
        {

        int index;

        if( numInfos == 0 )
            {
            return null;
            }

        for( int i = 0 ; i < numInfos ; i++ )
            {
            processForHomeDecision( info[i] );
            }

        // compute the maximum value
        index = 0;
        for( int i = 0 ; i < numInfos ; i++ )
            if( info[i].profit > info[index].profit )
                index = i;

        int howMany = 0;
        for( int i = 0 ; i < numInfos ; i++ )
            if( info[i].profit == info[index].profit )
                howMany++;

        int x = state.random.nextInt( howMany );
        for( int i = 0 ; i < numInfos ; i++ )
            if( info[i].profit == info[index].profit )
                if( x == 0 )
                    return info[i];
                else
                    x--;
        return null;
    
        }

    }