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Volume 43S Number 1 Volume 43 Number 1

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Research articles

ScienceAsia 43S (2017): 9-19 |doi: 10.2306/scienceasia1513-1874.2017.43S.009

Place-labelled Petri net controlled grammars

Nurhidaya Mohamad Jana, Sherzod Turaevb,*, Wan Heng Fongc, Nor Haniza Sarmina

ABSTRACT:     A place-labelled Petri net (pPN) controlled grammar is a context-free grammar equipped with a Petri net and a function which maps places of the net to the productions of the grammar. The language consists of all terminal strings that can be obtained by simultaneously applying the rules of multisets which are the images of the sets of the input places of transitions in a successful occurrence sequence of the Petri net. In this paper, we study the generative power and structural properties of pPN-controlled grammars. We show that pPN-controlled grammars have the same generative power as matrix grammars. Moreover, we prove that for each pPN-controlled grammar, we can construct an equivalent place-labelled ordinary net controlled grammar.

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a Department of Mathematical Sciences, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
b Department of Computer Science, Kulliyyah of Information and Communication Technology, International Islamic University Malaysia, 53100 Kuala Lumpur, Malaysia
c Ibnu Sina Institute for Fundamental Science Studies, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia

* Corresponding author, E-mail: sherzod@iium.edu.my

Received 22 Aug 2014, Accepted 21 May 2017