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diff --git a/fuzzylite/fl/term/Accumulated.h b/fuzzylite/fl/term/Accumulated.h
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+/*
+ Author: Juan Rada-Vilela, Ph.D.
+ Copyright (C) 2010-2014 FuzzyLite Limited
+ All rights reserved
+
+ This file is part of fuzzylite.
+
+ fuzzylite is free software: you can redistribute it and/or modify it under
+ the terms of the GNU Lesser General Public License as published by the Free
+ Software Foundation, either version 3 of the License, or (at your option)
+ any later version.
+
+ fuzzylite 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 GNU Lesser General Public License
+ for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with fuzzylite.  If not, see <http://www.gnu.org/licenses/>.
+
+ fuzzylite™ is a trademark of FuzzyLite Limited.
+
+ */
+
+#ifndef FL_ACCUMULATED_H
+#define FL_ACCUMULATED_H
+
+#include "fl/term/Term.h"
+
+#include <vector>
+
+namespace fl {
+
+    class Activated;
+    class SNorm;
+    class TNorm;
+
+    class FL_API Accumulated : public Term {
+    private:
+        void copyFrom(const Accumulated& source);
+    protected:
+        std::vector<Activated*> _terms;
+        scalar _minimum, _maximum;
+        FL_unique_ptr<SNorm> _accumulation;
+    public:
+        explicit Accumulated(const std::string& name = "",
+                scalar minimum = fl::nan,
+                scalar maximum = fl::nan,
+                SNorm* accumulation = fl::null);
+        Accumulated(const Accumulated& other);
+        Accumulated& operator=(const Accumulated& other);
+        virtual ~Accumulated() FL_IOVERRIDE;
+        FL_DEFAULT_MOVE(Accumulated)
+
+        virtual std::string className() const FL_IOVERRIDE;
+        virtual std::string parameters() const FL_IOVERRIDE;
+        virtual void configure(const std::string& parameters) FL_IOVERRIDE;
+
+        virtual Accumulated* clone() const FL_IOVERRIDE;
+
+        virtual scalar membership(scalar x) const FL_IOVERRIDE;
+        virtual scalar activationDegree(const Term* forTerm) const;
+
+        virtual std::string toString() const FL_IOVERRIDE;
+
+
+        virtual void setMinimum(scalar minimum);
+        virtual scalar getMinimum() const;
+
+        virtual void setMaximum(scalar maximum);
+        virtual scalar getMaximum() const;
+
+        virtual void setRange(scalar minimum, scalar maximum);
+        virtual scalar range() const;
+
+        virtual void setAccumulation(SNorm* accumulation);
+        virtual SNorm* getAccumulation() const;
+
+        /**
+         * Operations for std::vector _terms
+         */
+        virtual void addTerm(const Term* term, scalar degree, const TNorm* activation);
+        virtual void addTerm(Activated* term);
+        virtual Activated* getTerm(int index) const;
+        virtual Activated* removeTerm(int index);
+        virtual int numberOfTerms() const;
+        virtual const std::vector<Activated*>& terms() const;
+        virtual std::vector<Activated*>& terms();
+        virtual bool isEmpty() const;
+        virtual void clear();
+    };
+
+}
+#endif /* FL_ACCUMULATED_H */