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- research-articleFebruary 2023
On the Hierarchy of Swarm-automaton for the Number of Agents
Theory of Computing Systems (TOCSYS), Volume 67, Issue 4Pages 714–731https://doi.org/10.1007/s00224-023-10117-zAbstractWe have introduced and extended the notion of swarm automaton to analyze the computability using swarm movement represented by multiset rewriting. The two transitions, parallel and sequential, are considered to transform a configuration of ...
- research-articleDecember 2022
On the computational power of swarm automata using agents with position information
Natural Computing: an international journal (NATC), Volume 21, Issue 4Pages 605–614https://doi.org/10.1007/s11047-022-09881-7AbstractBased on swarm movements and computing models using multisets, a swarm automaton was introduced to construct a new computing system using swarm behavior in the computing process. In a swarm automaton, each agent changes by input and the ...
- ArticleNovember 2021
Accretive Computation of Global Transformations
Relational and Algebraic Methods in Computer SciencePages 159–175https://doi.org/10.1007/978-3-030-88701-8_10AbstractGlobal transformations form a categorical framework adapting graph transformations to describe fully synchronous rule systems on a given data structure. In this work we focus on data structures that can be captured as presheaves and study the ...
- ArticleJune 2019
Algebraic Systems Motivated by DNA Origami
AbstractWe initiate an algebraic approach to study DNA origami structures. We identify two types of basic building blocks and describe a DNA origami structure by their composition. These building blocks are taken as generators of a monoid, called the ...
- ArticleJune 2019
Swarm-Based Multiset Rewriting Computing Models
Unconventional Computation and Natural ComputationPages 79–93https://doi.org/10.1007/978-3-030-19311-9_8AbstractSwarm-based computing models and multi-agent-based models have been investigated using parallel processing computation. Based on the preceding models and multiset computings, we propose new computing systems, called swarm systems, that are ...
- articleJune 2012
The derivational complexity of string rewriting systems
We study the derivational complexities of string rewriting systems. We discuss the following fundamental question: which functions can be derivational complexities of terminating finite string rewriting systems? They are recursive, but for any recursive ...
- articleDecember 2010
Simple restriction in context-free rewriting
Journal of Computer and System Sciences (JCSS), Volume 76, Issue 8Pages 837–846https://doi.org/10.1016/j.jcss.2010.04.001Many rewriting systems with context-free productions and with controlled derivations have been studied. On one hand, these systems preserve the simplicity of applications of context-free productions and, on the other hand, they increase the generative ...
- articleApril 2008
Undecidable Properties on Length-Two String Rewriting Systems
Electronic Notes in Theoretical Computer Science (ENTCS) (ENTCS), Volume 204Pages 53–69https://doi.org/10.1016/j.entcs.2008.03.053Length-two string rewriting systems are length-preserving string rewriting systems that consist of length-two rules. This paper shows that confluence, termination, left-most termination and right-most termination are undecidable properties for length-...
- articleMarch 2004
Reduction relations for monoid semirings
Journal of Symbolic Computation (JOSC), Volume 37, Issue 3Pages 343–376https://doi.org/10.1016/j.jsc.2003.07.002In this paper we study rewriting techniques for monoid semirings. Based on disjoint and non-disjoint representations of the elements of monoid semirings we define two different reduction relations. We prove that in both cases the reduction relation ...
- research-articleDecember 1997
Symbolic chemical system based on abstract rewriting system and its behavior pattern
Artificial Life and Robotics (SPALR), Volume 1, Issue 4Pages 211–219https://doi.org/10.1007/BF02471142AbstractWe develop an abstract computational model, the abstract rewriting system on multisets, called ARMS, to deal with systems with a large number of degree of freedom, like liquids, and to confirm that they can simulate the emergence of the complex ...