Ijraset Journal For Research in Applied Science and Engineering Technology

Abstract

The core of this paper is to establish plus weighted grammar and to illustrate the language accepted by the pwfa and pwg are equivalent.

Introduction

I. INTRODUCTION

Weighted context free grammars and weighted finite automata were initially introduced in significant articles by Marcel-Paul Schutzenberger (1961) and Noam Chomsky (1963), respectively.Weighted finite automata are standard nondeterministic finite automata in which the transitions have weights.We consider the following scenarios to demonstrate the variation of weighted finite automata. We may determine the wide range of a word by counting the number of paths that can be used to represent it as follows: Let each transition have a weight of 1, and for a path that is taken again, the sum of the weights of its successful paths. The wide range of a word equals the sum of its successful paths' weights. The algebraic structures of a semiring involve the computations with weights in the previously mentioned illustration. Here the multiplication of semiring is utilised for estimating the weights of the paths and the weight of the word is successively predicted by the sum of the weights of its successful paths.Applications for weighted automata are numerous. Weighted automata and their accompanying algorithm are developed by contemporary spoken-dialog or handheld speech recognition systems to express their concepts and promote successful combination and search [1,7].

A plus weighted automata [8,9,10,11] is an automata that deals with plus weights up to infinity. Many algebraic structures of plus weighted automata has been discussed in [8,9,10]. A grammar related to this automata is proposed in this paper. This study is a generalisation of plus weighted multiset grammar [9].Plus weighted grammar (pwg) can also be extended further in right linear and left linear grammar. The plus weighted automata can be applied in max weighted automata cited as[2,3,4,5,6]. This work   can  be further motivated to work  in  field of graph theory [13,14,15,16].

In addition to this section, this paper comprises four more. Basic concepts and notions are discussed in Section 2 for usage in later parts. In Section 3, a new grammar called pwg is proposed which offers a fresh perspective on pwfa and it elaborates with illustration that for every plus weighted regular grammar there exists a pwfa. The final section, Section 4, concludes and describes the future extension of pwg.

Conclusion

This paper introduces a different approach on plus weighted grammar, this proposal can be applied in numerous works done in fuzzy grammar and fuzzy multiset grammar. Further plus weighted algebra-related tasks can be extended in the future.

References

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Copyright

Copyright © 2023 Dr. S. Saridha, S. Haridha Banu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.