[Boost-users] How to Boost serialize a Eigen::Matrix class

Hi, I have used Eigen::Matrix class  in my project. Now i wants to serialize the value of it through Boost::Serialize. Can someone help me on how to achieve that. My class is following, class RandomNode { private: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & is_leaf_; ar & depth_; ar & num_classes_; ar & num_features_; // Split node members ar & random_feature_indices_; ar & random_feature_weights_; ar & threshold_; ar & leftChild_; ar & rightChild_; } bool is_leaf_; int depth_; int num_classes_; int num_features_; // Split node members VectorXi random_feature_indices_; VectorXd random_feature_weights_; double threshold_; RandomNode* leftChild_; RandomNode* rightChild_; // Methods and so on } And i am getting the following error : /usr/include/boost/serialization/access.hpp:118:9: error: ‘class Eigen::Matrix’ has no member named ‘serialize’ thanks in advance. Regards, Dip