Pub Date : 2015-06-30DOI: 10.2991/IFSA-EUSFLAT-15.2015.229
A. Masegosa, A. Bahillo, E. Onieva, P. López-García, A. Perallos
The growth of Location Based Services and Location Aware Services in indoor environments has focused the attention of the research community on indoor location systems, especially on those based on WLAN networks and Received Signal Strength (RSS). Despite the advances reached, the development of reliable, accurate and low-cost indoor location systems still remains as an open problem. In this work, we focus on a specific class of location methods where the position of a Mobile Station (MS) is estimated by optimizing a cost function. As far as we know, the optimization models for indoor location proposed so far, only consider the current RSS measurements to estimate the position. In this paper, we propose an optimization approach that uses both current and past measurements to estimate the MS location. To solve the underlying optimization problem we use a Dierential Evolution algorithm. The experimentation done over a simulated and a real scenario shows, on the one hand, that using past and current measurements we obtain more accurate and robust position estimations, and on the other hand, that our proposal is competitive versus other high-performing location methods proposed in the literature.
{"title":"A new optimization approach for indoor location based on Differential Evolution","authors":"A. Masegosa, A. Bahillo, E. Onieva, P. López-García, A. Perallos","doi":"10.2991/IFSA-EUSFLAT-15.2015.229","DOIUrl":"https://doi.org/10.2991/IFSA-EUSFLAT-15.2015.229","url":null,"abstract":"The growth of Location Based Services and Location Aware Services in indoor environments has focused the attention of the research community on indoor location systems, especially on those based on WLAN networks and Received Signal Strength (RSS). Despite the advances reached, the development of reliable, accurate and low-cost indoor location systems still remains as an open problem. In this work, we focus on a specific class of location methods where the position of a Mobile Station (MS) is estimated by optimizing a cost function. As far as we know, the optimization models for indoor location proposed so far, only consider the current RSS measurements to estimate the position. In this paper, we propose an optimization approach that uses both current and past measurements to estimate the MS location. To solve the underlying optimization problem we use a Dierential Evolution algorithm. The experimentation done over a simulated and a real scenario shows, on the one hand, that using past and current measurements we obtain more accurate and robust position estimations, and on the other hand, that our proposal is competitive versus other high-performing location methods proposed in the literature.","PeriodicalId":67877,"journal":{"name":"模糊系统与数学","volume":"4 1","pages":"1604-1611"},"PeriodicalIF":0.0,"publicationDate":"2015-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91398003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-30DOI: 10.2991/IFSA-EUSFLAT-15.2015.101
M. Olivares-Méndez, P. Cervera
This paper proposed the use of vision based Fuzzy control approaches for autonomous navigation tasks with Unmanned Aerial Vehicles (UAVs). It is shown the advantages of using RGB cameras as the sensor onboard UAVs and the advantages of using Fuzzy logic controllers. It is explained how to set a vision based system and how to define a Fuzzy controller for a general control approach. A specific software was design and used to develop and tune general Fuzzy control approaches. The “how-to” of this software is also explained in this paper. A methodology to how to design, developed and tune Vision based Fuzzy Control (VBFC) approaches in robotics is also presented. Furthermore, it is shown three dierent VBFC approaches for autonomous navigation developed using this methodology and software. Real experiments were done to validate the dierent approaches with dierent vertical takeo and landing (VTOL) UAVs.
{"title":"Vision Based Fuzzy Control Approaches for Unmanned Aerial Vehicles","authors":"M. Olivares-Méndez, P. Cervera","doi":"10.2991/IFSA-EUSFLAT-15.2015.101","DOIUrl":"https://doi.org/10.2991/IFSA-EUSFLAT-15.2015.101","url":null,"abstract":"This paper proposed the use of vision based Fuzzy control approaches for autonomous navigation tasks with Unmanned Aerial Vehicles (UAVs). It is shown the advantages of using RGB cameras as the sensor onboard UAVs and the advantages of using Fuzzy logic controllers. It is explained how to set a vision based system and how to define a Fuzzy controller for a general control approach. A specific software was design and used to develop and tune general Fuzzy control approaches. The “how-to” of this software is also explained in this paper. A methodology to how to design, developed and tune Vision based Fuzzy Control (VBFC) approaches in robotics is also presented. Furthermore, it is shown three dierent VBFC approaches for autonomous navigation developed using this methodology and software. Real experiments were done to validate the dierent approaches with dierent vertical takeo and landing (VTOL) UAVs.","PeriodicalId":67877,"journal":{"name":"模糊系统与数学","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91397768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-30DOI: 10.2991/IFSA-EUSFLAT-15.2015.117
Amanda Vidal, L. Godo, F. Esteva
Authors are grateful to anonymous reviewers and acknowledge partial support of the Mineco project TIN2012-39348-C02-01.
作者感谢匿名审稿人，并感谢Mineco项目TIN2012-39348-C02-01的部分支持。
{"title":"On Strongly Standard Complete Fuzzy Logics: MTLQ* and its Expansions","authors":"Amanda Vidal, L. Godo, F. Esteva","doi":"10.2991/IFSA-EUSFLAT-15.2015.117","DOIUrl":"https://doi.org/10.2991/IFSA-EUSFLAT-15.2015.117","url":null,"abstract":"Authors are grateful to anonymous reviewers and acknowledge partial support of the Mineco project TIN2012-39348-C02-01.","PeriodicalId":67877,"journal":{"name":"模糊系统与数学","volume":"104 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76116519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-30DOI: 10.2991/IFSA-EUSFLAT-15.2015.99
T. Vetterlein
Fuzzy sets are a popular tool to model vague properties. It is, however, well-known that this model usually involves a good degree of arbitrariness. In this contribution we consider the possibility of standardising the construction of fuzzy sets at least with regard to the borderline cases. To this end, we identify a vague property with the sets of clearly positive cases and clearly negative cases and under the assumption that the universe of discourse is a metric space, we determine the fuzzy set by what can be described as a linear interpolation. Following this idea, we discuss a number of logic-based approaches to reasoning under vagueness.
{"title":"Logic of prototypes and counterexamples: possibilities and limits","authors":"T. Vetterlein","doi":"10.2991/IFSA-EUSFLAT-15.2015.99","DOIUrl":"https://doi.org/10.2991/IFSA-EUSFLAT-15.2015.99","url":null,"abstract":"Fuzzy sets are a popular tool to model vague properties. It is, however, well-known that this model usually involves a good degree of arbitrariness. In this contribution we consider the possibility of standardising the construction of fuzzy sets at least with regard to the borderline cases. To this end, we identify a vague property with the sets of clearly positive cases and clearly negative cases and under the assumption that the universe of discourse is a metric space, we determine the fuzzy set by what can be described as a linear interpolation. Following this idea, we discuss a number of logic-based approaches to reasoning under vagueness.","PeriodicalId":67877,"journal":{"name":"模糊系统与数学","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91397912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-30DOI: 10.2991/IFSA-EUSFLAT-15.2015.131
D. Dikranjan, A. Sostak
The purpose of these notes is to introduce the concept of a many-valued relation and to study two, in a certain sense dual, categories of such relations. Besides, we apply the concept of a manyvalued relation to the description of different approaches, both fixed-based and variable-based, to Fuzzy Topology and characterize categories related to Fuzzy Topology, in the framework of the corresponding categories of many-valued relations.
{"title":"On two categories of many valued relations","authors":"D. Dikranjan, A. Sostak","doi":"10.2991/IFSA-EUSFLAT-15.2015.131","DOIUrl":"https://doi.org/10.2991/IFSA-EUSFLAT-15.2015.131","url":null,"abstract":"The purpose of these notes is to introduce the concept of a many-valued relation and to study two, in a certain sense dual, categories of such relations. Besides, we apply the concept of a manyvalued relation to the description of different approaches, both fixed-based and variable-based, to Fuzzy Topology and characterize categories related to Fuzzy Topology, in the framework of the corresponding categories of many-valued relations.","PeriodicalId":67877,"journal":{"name":"模糊系统与数学","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91396861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
To the reduct problems of decision system, the paper proposes the notion of dynamic core according to the dynamic reduct model. It describes various formal definitions of dynamic core, and discusses some properties about dynamic core. All of these show that dynamic core possesses the essential characters of the feature core.
{"title":"The Feature Core of Dynamic Reduct","authors":"Jia-yang Wang","doi":"10.4236/AM.2012.35073","DOIUrl":"https://doi.org/10.4236/AM.2012.35073","url":null,"abstract":"To the reduct problems of decision system, the paper proposes the notion of dynamic core according to the dynamic reduct model. It describes various formal definitions of dynamic core, and discusses some properties about dynamic core. All of these show that dynamic core possesses the essential characters of the feature core.","PeriodicalId":67877,"journal":{"name":"模糊系统与数学","volume":"2012 1","pages":"484-488"},"PeriodicalIF":0.0,"publicationDate":"2012-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70320490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-01-01DOI: 10.1007/978-3-642-27296-7_28
Z. Peng, Pan Jin
{"title":"The Optimization on the Multiperiod Mean Average Absolute Deviation Fuzzy Portfolio Selection","authors":"Z. Peng, Pan Jin","doi":"10.1007/978-3-642-27296-7_28","DOIUrl":"https://doi.org/10.1007/978-3-642-27296-7_28","url":null,"abstract":"","PeriodicalId":67877,"journal":{"name":"模糊系统与数学","volume":"27 1","pages":"175-180"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/978-3-642-27296-7_28","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51082050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Hirano, K. Makino, K. Tomonaga, N. Kunugita, K. Arashidani
{"title":"Algorithm for Hypertension Therapy by Gene Expression Programming( Contribution to 21 Century Intelligent Technologies and Bioinformatics)","authors":"H. Hirano, K. Makino, K. Tomonaga, N. Kunugita, K. Arashidani","doi":"10.11163/AKANEKAI.4.074","DOIUrl":"https://doi.org/10.11163/AKANEKAI.4.074","url":null,"abstract":"","PeriodicalId":67877,"journal":{"name":"模糊系统与数学","volume":"26 1","pages":"95-100"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78005669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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