Methodologies and Application

Soft Computing

, Volume 18, Issue 7, pp 1425-1440

Lattice based communication P systems with applications in cluster analysis

  • Jie XueAffiliated withSchool of Management Science and Engineering, Shandong Normal University
  • , Xiyu LiuAffiliated withSchool of Management Science and Engineering, Shandong Normal University Email author 

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Membrane computing is widely used in many areas, however, there are several limitations in its structures and rules. Although many researchers are engaged in the study of P systems, seldom focus on improving membrane structures. The purpose of this paper is to propose a new kind of communication P system on lattice (LTC-P systems). We describe membrane structures on lattice with communication rules. The computational completeness of the new P system is proved by simulation of register machine. The new P system is used in solving clustering problems. It is combined with the thought of density-based, partition-based and hierarchical clustering algorithm. Clustering is implemented by supremum and infimum rules. The result is obtained through output membrane. All the processes are conducted in membranes. Cluster result via a \(20\) points data set verifies that the proposed new P systems cluster data set accurately and reduce time complexity. Wine data set are also used in testing the influence of parameters. More suitable \(\varepsilon \) and \({ MinPts}\) are found to gain less missing data which are seen as noise. Comparative results in various aspects indicate LTC-P system based clustering algorithm consumes less time than traditional algorithms significantly. It also uses less rules and gives more simple membrane structures than conventional cell-like P system. The new P system provides an alternative for traditional membrane computing.


Communication P system Lattice Register machine Single object Cluster analysis LTC-P systems