Browsing by Author "Fujita, Hamido"
Now showing items 1-20 of 21
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An attitudinal consensus degree to control feedback mechanism in group decision making with different adjustment cost
Wu, Jian; Sun, Qi; Fujita, Hamido; Chiclana, Francisco (Article)This article aims to study the influence of the group attitude on the consensus reaching process in group decision making (GDM). To do that, the attitudinal consensus index (ACI) is defined to aggregate individual consensus ... -
Confidence Based Consensus in Environments with High Uncertainty and Incomplete Information
Urena, Raquel; Chiclana, Francisco; Fujita, Hamido; Herrera-Viedma, Enrique (Conference)With the incorporation of web 2.0 frameworks the complexity of decision making situations has exponentially increased, involving in many cases many experts, and a potentially huge number of different alternatives, leading ... -
Confidence based Consensus Model for Intuitionistic Fuzzy Preference relations
Urena, Raquel; Chiclana, Francisco; Fujita, Hamido; Herrera-Viedma, Enrique (Conference)Intuitionistic fuzzy preference relation are gaining increasing relevance in the field of group decision making as they provide experts to allocate the uncertainty inherent in their proposed opinions. A key issue in this ... -
Confidence-consistency driven group decision making approach with incomplete reciprocal intuitionistic preference relations
Intuitionistic preference relations constitute a flexible and simple representation format of experts’ preference on a set of alternative options, while at the same time allowing to accommodate degrees of hesitation inherent ... -
A consensus approach to sentiment analysis
Appel, Orestes; Chiclana, Francisco; Carter, Jenny; Fujita, Hamido (Conference)There are many situations where the opinion of the majority of participants is critical. The scenarios could be multiple, like a number of doctors finding commonality on the diagnosing of an illness or parliament members ... -
A consensus approach to the sentiment analysis problem driven by support-based IOWA majority
Appel, Orestes; Chiclana, Francisco; Carter, Jenny; Fujita, Hamido (Article)In group decision-making there are many situations where the opinion of the majority of participants is critical. The scenarios could be multiple, like a number of doctors finding commonality on the diagnose of an illness ... -
Consensus Reaching in Social Network Group Decision Making: Research Paradigms and Challenges
Dong, Yucheng; Zha, Quanbo; Zhang, Hengjie; Kou, Gang; Fujita, Hamido; Chiclana, Francisco; Herrera-Viedma, Enrique (Article)In social network group decision making (SNGDM), the consensus reaching process (CRP) is used to help decision makers with social relationships reach consensus. Many CRP studies have been conducted in SNGDM until now. This ... -
Cross-ratio uninorms as an effective aggregation mechanism in Sentiment Analysis
Appel, Orestes; Chiclana, Francisco; Carter, Jenny; Fujita, Hamido (Article)There are situations in which lexicon-based methods for Sentiment Analysis (SA) are not able to generate a classification output for specific instances of a given dataset. Most often, the reason for this situation is the ... -
Estimating unknown values in reciprocal intuitionistic preference relations via asymmetric fuzzy preference relations
Chiclana, Francisco; Ureña, Raquel; Fujita, Hamido; Herrera-Viedma, Enrique (Book chapter)Intuitionistic preference relations are becoming increasingly important in the field of group decision making since they present a flexible and simple way to the experts to provide their preference relations, while at the ... -
Fuzzy Group Decision Making for Influence-Aware Recommendations
Capuano, Nicola; Chiclana, Francisco; Herrera-Viedma, Enrique; Fujita, Hamido; Loia, Vincenzo (Article)Group Recommender Systems are special kinds of Recommender Systems aimed at suggesting items to groups rather than individuals taking into account, at the same time, the preferences of all (or the majority of) members. ... -
Fuzzy Group Decision Making with Incomplete Information Guided by Social Influence
Chiclana, Francisco; Fujita, Hamido; Herrera-Viedma, Enrique; Capuano, Nicola; Loia, Vincenzo (Article)A promising research area in the field of Group Decision Making (GDM) is the study of interpersonal influence and its impact on the evolution of experts’ opinions. In conventional GDM models, a group of experts express ... -
Fuzzy Rankings for Preferences Modeling in Group Decision Making
Capuano, Nicola; Chiclana, Francisco; Herrera-Viedma, Enrique; Fujita, Hamido; Loia, Vincenzo (Article)Although fuzzy preference relations (FPRs) are among the most commonly used preference models in group decision making (GDM), they are not free from drawbacks. First of all, especially when dealing with many alternatives, ... -
A Hybrid Approach to Sentiment Analysis
Appel, Orestes; Chiclana, Francisco; Carter, Jenny; Fujita, Hamido (Conference)This contribution presents a hybrid approach to Sentiment Analysis (SA) encompassing the use of semantic rules, fuzzy sets, unsupervised machine learning techniques and a sentiment lexicon improved with the support of ... -
A Hybrid Approach to Sentiment Analysis with Benchmarking Results
Appel, Orestes; Chiclana, Francisco; Carter, Jenny; Fujita, Hamido (Conference)The objective of this article is two-fold. Firstly, a hybrid approach to Sentiment Analysis encompassing the use of Semantic Rules, Fuzzy Sets and an enriched Sentiment Lexicon, improved with the support of SentiWordNet ... -
A Hybrid Approach to the Sentiment Analysis Problem at the Sentence Level
Appel, Orestes; Chiclana, Francisco; Carter, Jenny; Fujita, Hamido (Article)The objective of this article is to present a hybrid approach to the Sentiment Analysis problem at the sentence level. This new method uses natural language processing (NLP) essential techniques, a sentiment lexicon enhanced ... -
An interaction consensus in group decision making under distributed trust information
Lifang Dai; Wu, Jian; Chiclana, Francisco; Fujita, Hamido; Herrera-Viedma, Enrique (Conference)A theoretical interaction consensus model in group decision making with distributed linguistic trust information is proposed. To do that, the concept of distributed linguists trust function (DLTF) is defined, and then the ... -
IOWA & Cross-ratio Uninorm operators as aggregation tools in sentiment analysis and ensemble methods
Appel, Orestes; Chiclana, Francisco; Carter, Jenny; Fujita, Hamido (Conference)In the field of Sentiment Analysis, a number of different classifiers are utilised to attempt to establish the polarity of a given sentence. As such, there could be a need for aggregating the outputs of the algorithms ... -
A minimum adjustment cost feedback mechanism based consensus model for group decision making under social network with distributed linguistic trust
A theoretical feedback mechanism framework to model consensus in social network group decision making (SN-GDM) is proposed with following two main components: (1) the modelling of trust relationship with linguistic ... -
Successes and challenges in developing a hybrid approach to sentiment analysis
Appel, Orestes; Chiclana, Francisco; Carter, Jenny; Fujita, Hamido (Article)This article covers some success and learning experiences attained during the developing of a hybrid approach to Sentiment Analysis (SA) based on a Sentiment Lexicon, Semantic Rules, Negation Handling, Ambiguity Management ...