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diff --git a/src/CuTNetLib/cuDiscreteLinearity.h b/src/CuTNetLib/cuDiscreteLinearity.h
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+#ifndef _CUDISCRETE_LINEARITY_H_
+#define _CUDISCRETE_LINEARITY_H_
+
+
+#include "cuComponent.h"
+#include "cumatrix.h"
+
+
+#include "Matrix.h"
+#include "Vector.h"
+
+#include <vector>
+
+
+namespace TNet {
+  /**
+   * \brief CuDiscreteLinearity Summation function
+   * 
+   * \ingroup CuNNUpdatable
+   * Similar to CuSharedLinearity except that mBias is not shared,
+   * only mLinearity is used as multiple instances.
+   * \sa CuBiasedLinearity
+   */
+  class CuDiscreteLinearity : public CuUpdatableComponent
+  {
+    public:
+
+      CuDiscreteLinearity(size_t nInputs, size_t nOutputs, CuComponent *pPred); 
+      ~CuDiscreteLinearity();  
+      
+      ComponentType GetType() const;
+      const char* GetName() const;
+
+      void PropagateFnc(const CuMatrix<BaseFloat>& X, CuMatrix<BaseFloat>& Y);
+      void BackpropagateFnc(const CuMatrix<BaseFloat>& X, CuMatrix<BaseFloat>& Y);
+
+      void Update();
+
+      void ReadFromStream(std::istream& rIn);
+      void WriteToStream(std::ostream& rOut);
+
+    protected:
+      std::vector<CuMatrix<BaseFloat> > mLinearity;  ///< Matrix with neuron weights
+      CuVector<BaseFloat> mBias;       ///< Vector with biases
+
+      std::vector<CuMatrix<BaseFloat> > mLinearityCorrection; ///< Matrix for linearity updates
+      CuVector<BaseFloat> mBiasCorrection;      ///< Vector for bias updates
+
+      size_t mNBlocks;
+
+  };
+
+
+
+
+  ////////////////////////////////////////////////////////////////////////////
+  // INLINE FUNCTIONS 
+  // CuDiscreteLinearity::
+  inline 
+  CuDiscreteLinearity::
+  CuDiscreteLinearity(size_t nInputs, size_t nOutputs, CuComponent *pPred)
+    : CuUpdatableComponent(nInputs, nOutputs, pPred), 
+      //mLinearity(nInputs,nOutputs), mBias(nOutputs),
+      //mLinearityCorrection(nInputs,nOutputs), mBiasCorrection(nOutputs)
+      mNBlocks(0)
+  { 
+    //mLinearityCorrection.SetConst(0.0);
+    //mBiasCorrection.SetConst(0.0);
+  }
+
+
+  inline
+  CuDiscreteLinearity::
+  ~CuDiscreteLinearity()
+  { }
+
+  inline CuComponent::ComponentType
+  CuDiscreteLinearity::
+  GetType() const
+  {
+    return CuComponent::DISCRETE_LINEARITY;
+  }
+
+  inline const char*
+  CuDiscreteLinearity::
+  GetName() const
+  {
+    return "<discretelinearity>";
+  }
+
+
+
+} //namespace
+
+
+
+#endif