Journal of Intelligent & Fuzzy Systems - Volume 39, issue 3

Authors: Pandian, Arun Nambi | Palanivelu, Aravindhababu

Article Type: Research Article

Abstract: Optimal placement of FACTS devices attempts to improve power transfer, minimize active power loss, enhance voltage profile and improve voltage stability, thereby making the operation of power systems more flexible and secured. The classical methods experience difficulties in solving the FACTS placement problem (FPP) with discontinuous functions and may diverge or result oscillatory convergence. Besides the number of FACTS devices for placement should be given as an input while solving the problem. The solution methods then attempts to forcefully place all the specified number of devices in the power system, but in reality, the system may require an optimal number …of FACTS for placement. The application of swarm-intelligence based optimization algorithms strives to overcome the drawbacks of classical methods. This paper presents a new solution method for FACTS placement problem using improved harmony search optimization (IHSO) with a newly suggested dissonance mechanism that avoids badly composed music, with a view of avoiding the sub-optimal solutions. Besides, the method requires to specify only the maximum number of FACTS devices for placement and places only the optimal number of devices within the specified maximum number of devices. The paper also includes simulation results of three IEEE test systems for exhibiting the superiority of the proposed method. Show more

Keywords: FACTS devices, voltage stability, loss minimization, evolutionary algorithms, harmony search optimization

DOI: 10.3233/JIFS-192178

Citation: Journal of Intelligent & Fuzzy Systems, vol. 39, no. 3, pp. 3839-3851, 2020

Authors: Hamid, Muhammad Tahir | Riaz, Muhammad | Afzal, Deeba

Article Type: Research Article

Abstract:  In this article, we study some concepts related to q -rung orthopair fuzzy soft sets (q -ROFS sets), together with their algebraic structure. We present operations on q -ROFSSs and their specific properties and elaborate them with real-life examples and tabular representations to develop influx of linguistic variables based on q -rung orthopair fuzzy soft (q -ROFS) information. We present an application of q -ROFS sets to multi-criteria group decision-making (MCGDM) process related to the university choice, accompanied by algorithm and flowchart. We develop q -ROFS TOPSIS method and q -ROFS VIKOR method as extensions of TOPSIS (a technique for …ordering preference through the ideal solution) and VIKOR (Vlse Kriterijumska Optimizacija Kompromisno Resenje), respectively. Finally, we tackle a problem of construction business utilizing q -ROFS TOPSIS and q -ROFS VIKOR methods. Show more

Keywords: q-rung orthopair fuzzy soft sets, MCGDM, aggregation operator, TOPSIS, VIKOR

DOI: 10.3233/JIFS-192195

Citation: Journal of Intelligent & Fuzzy Systems, vol. 39, no. 3, pp. 3853-3871, 2020

Authors: Karbasioun, Asefeh | Ameri, R.

Article Type: Research Article

Abstract: We introduce and study forcing number for fuzzy graphs. Also, we compute zero forcing numbers for some classes of graphs and extend this concept to fuzzy graphs. In this regard we obtain upper bounds for zero forcing of some classes of fuzzy graphs. We will proceed to obtain a new algorithm to computing zero forcing set and finding a formula for zero forcing number, and by some examples we illustrate these notions. Finally, we introduce some applications of fuzzy zero forcing in medical treatments.

Keywords: Fuzzy graph, zero forcing number, path cover number, block graph, multipartite graphs

DOI: 10.3233/JIFS-192201

Citation: Journal of Intelligent & Fuzzy Systems, vol. 39, no. 3, pp. 3873-3882, 2020

Authors: Lv, Tao | Wang, Yan | Deng, Xu | Zhan, Hui | Siskova, Martina

Article Type: Research Article

Abstract: City sprawl and rapid increase of petroleum-fueled passenger vehicles has attracted a lot of attention due to concerns of resource energy scarcity and associated environmental damage. This paper uses the transition theory of socio-technical system from the multi-level perspective to analyze the internal mechanism of urban transportation’s transition process and find the most sustainable measures to promote transition. A set of evaluation indicators are constructed for the urban transportation sustainability transition from macro landscape, meso regime and micro niche. Then these indicators are applied to 13 cities in Jiangsu Province and calculate scores of each using triangular fuzzy logic method. …The results show that: most cities are in the ‘medium’ stage of transportation transition, while only 4 cities in the ‘relatively poor’ stage. Development of micro niche plays vital role in promoting the transition of urban transportation towards sustainability. Adequate infrastructure support and detailed implementation policies should be developed to protect the steady growth of innovation niches. Show more

Keywords: Urban transportation, transition effect, the multi-level perspective, fuzzy logic

DOI: 10.3233/JIFS-200011

Citation: Journal of Intelligent & Fuzzy Systems, vol. 39, no. 3, pp. 3883-3898, 2020

Authors: Song, Yan | Ge, Xun | Li, Zhaowen

Article Type: Research Article

Abstract: Multisets are the nature extension of classical sets. Rough multisets are multisets in rough set context. This note studies rough multisets. We illustrate that Definition 9.1 in [4 ] is imperfect or irrational via an example. In order to improve this definition, we redefine rough multisets along with a illustrative example. Moreover, we obtain some properties of rough multisets based on new definition. Finally, we give applications of rough multisets.

Keywords: Multiset, Multiset relation, rough multiset, roughness, multiset topology

DOI: 10.3233/JIFS-200015

Citation: Journal of Intelligent & Fuzzy Systems, vol. 39, no. 3, pp. 3899-3906, 2020

Authors: Wu, Xiu-Yun

Article Type: Research Article

Abstract: On completely distributive lattice, the notion of fuzzy generalized convex space is introduced. It can be characterized by many means including fuzzy generalized hull space, fuzzy generalized restricted hull space, fuzzy generalized convexly enclosed relation space and fuzzy generalized derived hull space.

Keywords: Fuzzy generalized convex space, fuzzy generalized hull space, fuzzy generalized restricted hull space, fuzzy generalized convexly enclosed relation space

DOI: 10.3233/JIFS-200026

Citation: Journal of Intelligent & Fuzzy Systems, vol. 39, no. 3, pp. 3907-3919, 2020

Authors: Fahmi, Aliya | Aslam, Muhammad | Ahmed, Rehan

Article Type: Research Article

Abstract: A novel idea of linguistic interval-valued intuitionistic neutrosophic fuzzy numbers (LIVINFNs) and operational laws of the numbers are introduced in this paper. LIVINF TOPSIS method is developed and application of the developed TOPSIS method to a multi-attribute group decision making (MAGDM) problem in a LIVINF environment is discussed. Finally, a numerical example is presented to validate this new approach in group decision making problems.

Keywords: Fuzzy logic, linguistic term, neutrosophic, TOPSIS method

DOI: 10.3233/JIFS-200029

Citation: Journal of Intelligent & Fuzzy Systems, vol. 39, no. 3, pp. 3921-3929, 2020

Authors: Tehrim, Syeda Tayyba | Riaz, Muhammad

Article Type: Research Article

Abstract: The plan of this research is to establish an innovative multi-attribute group decision-making (MAGDM) based on a interval-valued bipolar fuzzy set (IVBFS) by unifying“ VIseKriterijumska Optimizacija I Kompromisno Rasenje (VIKOR)” method. The VIKOR method is regarded to be a helpful MAGDM technique, particularly in circumstances where an expert is unable to properly determine his decision at the outset of the design of the scheme. The theory of set pair analysis (SPA) is a state-of-the-art uncertainty theory consisting of three variables, including “identity degree”, “discrepancy degree” and “opposite degree” of connection numbers (CNs) and a combination of many current theories dealing …with vagueness in the data. Inspired by this, we are therefore making an attempt in the current research to enhance the theory of information measurement by incorporating certain metrics using CNs. In this research paper, we present the linguistic VIKOR method in the context of the CNs based metrics obtained from the interval-valued bipolar fuzzy numbers (IVBFNs). First of all, we create CNs of IVBFNs and then CN-based metrics. Secondly, we develop linguistic VIKOR method using CNs based metrics to handle an MAGDM problem under IVBF type information. The predominance and advantages of proposed approach are also highlighted. Furthermore, we demonstrate the efficiency of the extended VIKOR method by solving a numerical example, sensitivity analysis and a detailed comparison with some existing approaches. Show more

Keywords: IVBFS, connection numbers (CNs), CN-metrics, linguistic VIKOR, MAGDM

DOI: 10.3233/JIFS-200038

Citation: Journal of Intelligent & Fuzzy Systems, vol. 39, no. 3, pp. 3931-3948, 2020

Authors: Liu, Zhi Qiang | Ma, Zhen Ming

Article Type: Research Article

Abstract: The present paper investigates the hesitant fuzzy filters on residuated lattices. A one-to-one correspondence between the set of all hesitant fuzzy filters and the set of all hesitant fuzzy congruences is established and a quotient residuated lattice with respect to a hesitant fuzzy filter is induced. Furthermore, several special types of hesitant fuzzy filters such as hesitant fuzzy implicative, regular and Boolean filters are introduced, and some alternative definitions of them are obtained, then some typical logical algebras are characterized by these identity forms.

Keywords: Hesitant fuzzy sets, hesitant fuzzy implicative filters, hesitant fuzzy regular filters, hesitant fuzzy Boolean filters, residuated lattices

DOI: 10.3233/JIFS-200056

Citation: Journal of Intelligent & Fuzzy Systems, vol. 39, no. 3, pp. 3949-3956, 2020

Authors: Li, Nailiang | Jin, Xiao | Li, Yupeng

Article Type: Research Article

Abstract: Customer requirements are the essential driving force for successful product development. They can be grouped into several categories, including basic requirements, indifferent requirements, reverse requirements, expected requirements, and attractive requirements. Among these, the latter two are crucial for improving customer satisfaction and can be classified as key requirements. However, the literature on identifying key requirements suffers from issues related to subjective interference and the lack of a specific quantitative calculation process. Thus, this study proposes a model for identifying critical customer requirements. First, use Python to run the web crawler for extracting online customer reviews. Second, extract product engineering characteristics …using the relevant text mining technology and latent Dirichlet allocation topic clustering algorithm. Third, we combine sentiment analysis and other factors that influence customer satisfaction with the product engineering characteristics to conduct the conjoint analysis and calculate utility values for the product engineering characteristics. Finally, integrate Kano model to formulate the requirements hierarchy rules, determine the final key requirements index, and identify the key customer requirements. And a case study implemented the key customer requirements identification problem for a smartphone to demonstrate the feasibility and effectiveness of the proposed methodology. Show more

Keywords: Key customer requirements, engineering characteristic extraction, online reviews, Kano model, product update

DOI: 10.3233/JIFS-200057

Citation: Journal of Intelligent & Fuzzy Systems, vol. 39, no. 3, pp. 3957-3970, 2020