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A novel fuzzy metric to evaluate clusters for prolonging lifetime in wireless sensor networks

Peyman Neamatollahi, Hoda Taheri, Ehsan Toreini, Mahmoud Naghibzadeh, Mohammad Hossein Yaghmaee
2011 2011 International Symposium on Artificial Intelligence and Signal Processing (AISP)  
The most important consideration in designing protocols for wireless sensor networks is the energy constraint of nodes because in most cases battery recharging is inconvenient or impossible. Therefore, many research have been done to overcome this demerit. Clustering is one of the main approaches in designing scalable and energy-efficient protocols for wireless sensor networks. The cluster heads take the task of data aggregation and data routing to decrease the amount of communication and this
more » ... unication and this prolongs the network lifetime. To the best of our knowledge, in spite of the importance of clustering in extending network lifetime, no metrics have been proposed for evaluating the quality of generated clusters. In this paper, we define some metrics to compare different protocols in terms of clustering qualification. Then we combine these metrics using fuzzy logic to better conclude about the superiority of different clustering schemes. The correction and feasibility is validated in simulations of three different protocols (LEACH, HEED, and HEED-NPF) in Matlab software.
doi:10.1109/aisp.2011.5960995 fatcat:rwthmyfkyrdnjcysrnusarwf4u

Designing Attentive Information Dashboards with Eye Tracking Technology

Peyman Toreini
2020
Peyman Toreini Karlsruhe, Germany October 2020 iv Abstract With the use of Business Intelligence and Analytics (BI&A) systems, companies collect and analyze data from various sources to support data-driven  ...  and Morana (2017), Toreini et al. (2018c), Toreini et al. (2018b), Toreini and Langner (2019), Toreini et al. (2020b), Toreini et al. (2020c), Toreini and Maedche(2020), Toreini et al. (2020a)  ...  and Morana (2017) , Toreini et al. (2018c) , Toreini et al. (2018b) , , Toreini et al. (2020b) , Toreini et al. (2020c) , Toreini and Maedche (2020) , Toreini et al. (2020a) Human Information Processing  ... 
doi:10.5445/ir/1000124898 fatcat:z6bz24midvfmrjupntflbp3usu

SNA-Based Recommendation in Professional Learning Environments

Mohamed Amine Chatti, Peyman Toreini, Hendrik Thues, Ulrik Schroeder
2016
Recommender systems can provide effective means to support self-organization and networking in professional learning environments. In this paper, we leverage social network analysis (SNA) methods to improve interest-based recommendation in professional learning networks. We discuss two approaches for interest-based recommendation using SNA and compare them with conventional collaborative filtering (CF)-based recommendation methods. The user evaluation results based on the ResQue framework
more » ... Que framework confirm that SNA-based CF recommendation outperform traditional CF methods in terms of coverage and thus can provide an effective solution to the sparsity and cold start problems in recommender systems.
doi:10.5445/ir/1000056942 fatcat:mdjz2ty5fzajfejzdv25ayjtu4

SNA-Based Recommendation in Professional Learning Environments

Mohamed Chatti, Peyman Toreini, Hendrik Thüs, Ulrik Schroeder
unpublished
Recommender systems can provide effective means to support self-organization and networking in professional learning environments. In this paper, we leverage social network analysis (SNA) methods to improve interest-based recommendation in professional learning networks. We discuss two approaches for interest-based recommendation using SNA and compare them with conventional collaborative filtering (CF)-based recommendation methods. The user evaluation results based on the ResQue framework
more » ... Que framework confirm that SNA-based CF recommendation out-perform traditional CF methods in terms of coverage and thus can provide an effective solution to the sparsity and cold start problems in recommender systems.
fatcat:75qrfbiybngzpbstuc5fnm37za

Cody : An Interactive Machine Learning System for Qualitative Coding

Tim Rietz, Peyman Toreini, Alexander Maedche
2020
Qualitative coding, the process of assigning labels to text as part of qualitative analysis, is time-consuming and repetitive, especially for large datasets. While available QDAS sometimes allows the semi-automated extension of annotations to unseen data, recent user studies revealed critical issues. In particular, the integration of automated code suggestions into the coding process is not transparent and interactive. In this work, we present Cody, a system for semi-automated qualitative
more » ... d qualitative coding that suggests codes based on human-defined coding rules and supervised machine learning (ML). Suggestions and rules can be revised iteratively by users in a lean interface that provides explanations for code suggestions. In a preliminary evaluation, 42% of all documents could be coded automatically based on code rules. Cody is the first coding system to allow users to define query-style code rules in combination with supervised ML. Thereby, users can extend manual annotations to unseen data to improve coding speed and quality.
doi:10.5445/ir/1000122802 fatcat:dapvnlbylzghbef5ogvgtwmcj4

Interest-based Recommendation in Academic Networks using Social Network Analysis

Peyman Toreini, Mohamed Amine Chatti, Hendrik Thues, Ulrik Schroeder
2016
Schroeder Peyman Toreini, Mohamed Amine Chatti, Hendrik Thüs, Ulrik Schroeder Peyman Toreini, Mohamed Amine Chatti, Hendrik Thüs, Ulrik Schroeder Peyman Toreini, Mohamed Amine Chatti, Hendrik  ...  SNA + IN SNA + 3dCN SVD CF + 1dCN SNA + 2dCN CF + 3dCN CF + 2dCN CF User Evaluation SNA -based RS SNA - based RS Peyman Toreini, Mohamed Amine Chatti, Hendrik Thüs, Ulrik  ... 
doi:10.5445/ir/1000059765 fatcat:6bufc6b5i5ditgdl7kguj6gs7q

التوجیه البصری وأثره على إدراک المضمون الاخباری فی المواقع الصحفیة.. دراسة شبه تجریبیة

منال محمد أبو المجد, عبدالله عبدالرحیم محمد
2020 مجلة البحوث الإعلامیة  
اﳌﺸﺘﺘﺎت‬ ‫ﻋﻦ‬ 10 - ‫ﺗﻮرﻳﻨﻲ‬ ‫ﺑﻴﻤﺎن‬ Peyman Toreini ‫ﻻﻧ‬ ‫ﻣﻮرﻳﺘﺰ‬ ، ‫ﻐﻨﺮ‬ Moritz Langner ، ‫أﻟﻜﺴﻨﺪر‬ ‫ﻣﺎﻳﺪﺷﻲ‬ Alexander Maedche ) 2020 "( ‫اﻟﻌﲔ‬ ‫ﻣﺴﺎرات‬ ‫ﺗﺘﺒﻊ‬ ‫ﺗﻜﻨﻮﻟﻮﺟﻴﺎ‬ ‫اﺳﺘﺨﺪام‬ ‫اﻟﺒﺼﺮي‬  ... 
doi:10.21608/jsb.2020.110291 fatcat:a75cbbgbqncazmw4wa2tiynpka

Acknowledgement to Reviewers of Applied Sciences in 2019

Applied Sciences Editorial Office
2020 Applied Sciences  
Toral, Antonio Toreini, Ehsan Torgal, F.  ...  Mažeika, Dalius Mazeika, Liudas Mazidi, Peyman Mazomenos, Evangelos Mazuelas, Santiago Mazumder, Mithil Mazur, Stanisław Mazur, Ursula Mazurek, Paweł Mazurkiewicz-Pawlicka, Marta Mazurov, Boris Mazzarella  ... 
doi:10.3390/app10020725 fatcat:j7pcmb6esbafpa6vqkqs5apsye

Acknowledgment to Reviewers of Applied Sciences in 2020

Applied Sciences Editorial Office Applied Sciences Editorial Office
2021 Applied Sciences  
Torchio, Marcello Tosanovic, Natasa Tordeux, Antoine Toscani, Anita Toreini, Ehsan Tostado-Véliz, Marcos Torigoe, Kanjiro Totan, Alexandra Ripszky Torija Martinez, Antonio J.  ...  Minak, Giangiacomo Minakshi, Manickam Mironova, Maria Minami, Yoichi Miroshnichenko, Andrey Minasny, Budiman Miroslaw, Wesolowski Minav, Tatiana Mirsayar, Mirmilad Minažek, Krunoslav Mirtaheri, Peyman  ... 
doi:10.3390/app11031108 fatcat:fcprlahz6jbvtnj3omkffng4uq

The Eighth International Conference on Mobile, Hybrid, and On-line Learning

Stephen White
unpublished
SNA-Based Recommendation in Professional Learning Environments Mohamed Amine Chatti, Peyman Toreini, Hendrik Thüs, Ulrik Schroeder Informatik 9 (Learning Technologies) RWTH Aachen University, Germany Email  ... 
fatcat:mhfox4kfgregpdspj76xof25z4