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Expression Evaluation by Cell-like Model

Author: LiuShengZuo
Tutor: GuoPing
School: Chongqing University
Course: Applied Computer Technology
Keywords: P System Membrane Computing Arithmetic Expression evaluation
CLC: TP38
Type: Master's thesis
Year: 2011
Downloads: 37
Quote: 1
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Abstract


Membrane Computing is a branch of bio-computing , computing model is abstracted from the biological function and structure of living cells . Membrane computing is also known as the P system , a calculation model is proposed by Romanian scientists Gh.Paun in 1998 , brought new ideas and models for computer science at the same time , also introduced a new modeling of natural systems tool. The basic operations of arithmetic expression evaluation calculation model must be completed , and the study of membrane structure established arithmetic expression is very weak . In this paper, a class-based cell model , working on arithmetic and arithmetic expression evaluation problem . The work includes the following aspects: 1 ) In accordance with the basic principles and characteristics of the membrane computing , are given priority - based arithmetic P system , well reflects the characteristics of the membrane computing parallel . 2 ) priority - based P system , rules are more difficult to understand . This article also gives the rules simpler and easier to understand , more parallel rule-based priority arithmetic P system . 3 ) arithmetic P system was proposed based on the expression of membrane structure construction algorithm . 4 ) A by changing the calculation method to improve the expression of membrane structure constructed parallel optimization algorithm . Arithmetic expression evaluation can be decomposed into a set of addition , subtraction , multiplication and division operations that are to some extent parallel . You can take advantage of this parallelism to improve the computational efficiency while exploiting the maximum parallelism characteristics of the membrane structure . 5 ) in the design of the arithmetic P system , the introduction of the synchronization and mutual exclusion mechanism , to ensure the accuracy of the calculation and parallelism . 6 ) with computer calculated based on membrane expression evaluation simulation to verify the correctness and feasibility of the algorithm . Gh. Paun membrane computing thinking , membrane computing will soon become a hot topic . However , the realization of the general-purpose computer must also rely on the realization of the basic arithmetic operations , and expression evaluation . Has an extremely important academic and practical significance of the study on the realization of the common biological computer .

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