Population.h

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/************************************************************************
* Verve                                                                 *
* Copyright (C) 2004-2006                                               *
* Tyler Streeter  tylerstreeter@gmail.com                               *
* All rights reserved.                                                  *
* Web: http://verve-agents.sourceforge.net                              *
*                                                                       *
* This library is free software; you can redistribute it and/or         *
* modify it under the terms of EITHER:                                  *
*   (1) The GNU Lesser General Public License as published by the Free  *
*       Software Foundation; either version 2.1 of the License, or (at  *
*       your option) any later version. The text of the GNU Lesser      *
*       General Public License is included with this library in the     *
*       file license-LGPL.txt.                                          *
*   (2) The BSD-style license that is included with this library in     *
*       the file license-BSD.txt.                                       *
*                                                                       *
* This library is distributed in the hope that it will be useful,       *
* but WITHOUT ANY WARRANTY; without even the implied warranty of        *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files    *
* license-LGPL.txt and license-BSD.txt for more details.                *
************************************************************************/

#ifndef VERVE_POPULATION_H
#define VERVE_POPULATION_H

#include "Globals.h"
#include "TDConnection.h"
#include "Projection.h"

namespace verve
{
        class Neuron;

        class Population
        {
        public:
                VERVE_DECL Population();

                VERVE_DECL virtual ~Population();

                VERVE_DECL virtual void VERVE_CALL init(unsigned int numNeurons);

                VERVE_DECL virtual void VERVE_CALL resetShortTermMemory();

                VERVE_DECL virtual void VERVE_CALL project(Population* pop, 
                        InitialWeightMethod initWeightMethod, 
                        real maxInputPopActivationSum);

                VERVE_DECL virtual void VERVE_CALL projectTD(Population* pop, 
                        TDConnectionType type, 
                        InitialWeightMethod initWeightMethod, 
                        real maxInputPopActivationSum);

                VERVE_DECL virtual void VERVE_CALL updateFiringRatesLinear();

                VERVE_DECL virtual void VERVE_CALL 
                        updateFiringRatesLinearBoundedNegOneToOne();

                VERVE_DECL virtual void VERVE_CALL 
                        updateFiringRatesLinearBoundedZeroToOne();

                VERVE_DECL virtual void VERVE_CALL updateFiringRatesSigmoid();

                VERVE_DECL virtual real VERVE_CALL trainPreDeltaRuleLinear(
                        const real* actualOutputs, real learningFactor);

                VERVE_DECL virtual unsigned int VERVE_CALL getNumNeurons()const;

                VERVE_DECL virtual Neuron* VERVE_CALL getNeuron(unsigned int i);

                VERVE_DECL virtual void VERVE_CALL normalizeInputWeights();

                VERVE_DECL virtual void VERVE_CALL setPostETraceDecayFactors(
                        real value);

                //  are assumed to be TDProjections).
                VERVE_DECL virtual void VERVE_CALL setPostTDDiscountFactors(
                        real value);

        protected:
                virtual void clear();

                virtual void createNeuron(unsigned int id);

                std::vector<Neuron*> mNeurons;

                std::vector<Projection*> mOutputProjections;
        };
}

#endif

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