scholarly journals DISGROU: an algorithm for discontinuous subgroup discovery

2021 ◽  
Vol 7 ◽  
pp. e512
Author(s):  
Reynald Eugenie ◽  
Erick Stattner

In this paper, we focus on the problem of the search for subgroups in numerical data. This approach aims to identify the subsets of objects, called subgroups, which exhibit interesting characteristics compared to the average, according to a quality measure calculated on a target variable. In this article, we present DISGROU, a new approach that identifies subgroups whose attribute intervals may be discontinuous. Unlike the main algorithms in the field, the originality of our proposal lies in the way it breaks down the intervals of the attributes during the subgroup research phase. The basic assumption of our approach is that the range of attributes defining the groups can be disjoint to improve the quality of the identified subgroups. Indeed the traditional methods in the field perform the subgroup search process only over continuous intervals, which results in the identification of subgroups defined over wider intervals thus containing some irrelevant objects that degrade the quality function. In this way, another advantage of our approach is that it does not require a prior discretization of the attributes, since it works directly on the numerical attributes. The efficiency of our proposal is first demonstrated by comparing the results with two algorithms that are references in the field and then by applying to a case study.

2021 ◽  
Vol 297 ◽  
pp. 01019
Author(s):  
Abdeslam Houari ◽  
Tomader Mazri

6G of mobile networks plays a crucial role in improving the capacity and enhancing the quality of services of Vehicle-to-Everything (V2X) based networks evolving in an intelligent environment. VANET is a promising project in the intelligent transportation field using V2X communications. The emergence of several 5G and 6G technologies has raised several challenges for scientists and researchers to allow vehicles and road users to enjoy several services while ensuring their safety on the road. Among these technologies, the unmanned aerial vehicle (UAV), which can perform different tasks for road users and vehicle drivers such as data caching, packet relaying and processing. In this article, we present a new approach based on 6G Unmanned Aerial Vehicles (UAV) technology on a vehicular cloud architecture while exploiting the exchange support of information-centric networking (ICN) for the improvement of network capacity.


Author(s):  
Marilyn Bookbinder ◽  
Romina Arceo

This chapter provides perspectives on quality improvement (QI)-based initiatives in US healthcare organizations across settings and populations and discusses their impact on patient, professional, and system outcomes in palliative care. Principles of QI and structural, process, and outcome approaches to conducting QI studies are introduced. A case study is presented of a care-path for the end of life that the author and colleagues pilot-tested. An algorithm addressing dyspnea, a distressing symptom at end-of-life, is offered for testing, and a new approach to evaluating care at the end of life using the Joint Commission’s tracer methodology will be introduced. The chapter closes by showcasing nurses within interdisciplinary teams who are building evidence and providing leadership in the field of quality and palliative care.


2014 ◽  
Vol 52 ◽  
Author(s):  
Daniel Acton ◽  
Derrick Kourie ◽  
Bruce Watson

As long as software has been produced, there have been efforts to strive for quality in software products. In order to understand quality in software products, researchers have built models of software quality that rely on metrics in an attempt to provide a quantitative view of software quality. The aim of these models is to provide software producers with the capability to define and evaluate metrics related to quality and use these metrics to improve the quality of the software they produce over time. The main disadvantage of these models is that they require effort and resources to define and evaluate metrics from software projects. This article briefly describes some prominent models of software quality in the literature and continues to describe a new approach to gaining insight into quality in software development projects. A case study based on this new approach is described and results from the case study are discussed.


e-mentor ◽  
2017 ◽  
Vol 2016 (4(66)) ◽  
pp. 13-25
Author(s):  
Ewa Stemposz ◽  
Alina Stasiecka ◽  
Andrzej Jodłowski
Keyword(s):  

2018 ◽  
Vol 7 (11) ◽  
pp. 422
Author(s):  
Paul Kuper

There are multiple location-based services (LBSs) and mobile GIS available for a wide range of applications. Usually such applications are developed to solve a restricted task within a restricted environment. The focus on a particular task is strong, and therefore, such applications can usually not be used in multiple environments. To overcome this issue, this paper presents a concept of a generic professional mobile GIS with a focus on interoperability. Firstly, common issues of mobile applications are presented, and their impact on the development of mobile GIS is analyzed. Subsequently, a new approach for a generic mobile GIS for professional users is presented. Based on multiple OGC standards, the approach leads to a system that can be used in various applications where the quality of surveyed data and analysis capabilities are improved. To prove the strength of the approach with GeoTechMobile, a prototype is presented and evaluated in a case study.


2007 ◽  
Vol 10-12 ◽  
pp. 12-17 ◽  
Author(s):  
T. He ◽  
L.M. Qiao ◽  
X.F. Xu ◽  
Y.L. Fu

To reduce the complexity and difficulty of costing of quality of manufactures, a new approach about the costing of quality including the method, structure, system and case study based on the business process rule is proposed in the paper. Comparing with the traditional method, the new idea can improve the performance of the costing of quality at the aspect of generalization, customization, evolution and reconfiguration by establish the mapping among the user application, the business rule and the business process.


Author(s):  
Nadir Belhaj ◽  
Abdemounaime Hamdane ◽  
Nour El Houda Chaoui ◽  
Habiba Chaoui ◽  
Moulhime El Bekkali

The use of chatbot or conversational agents is becoming common these days by the companies in many fields to make smart conversations with users. Backed by artificial intelligence and natural language processing they provide a strong platform to engage users. These positive aspects of chatbots can be beneficial in the educational sector, especially in conducting online survey. This study aims to explore the feasibility of a new chatbot approach survey as a new survey method in Moroccan university to overcome the web survey’s common response quality problems. Indeed, having student feedback before and after graduation is essential for university assessment. This new approach keeps students engaged, supportive, and even excited to offer feedback without getting bored and dropping the conversation, especially in Moroccan universities known by an overcrowding of students where it is difficult to get their feedback. This feedback feeds into our university' databases for further reporting and decision making to improve the quality of educational content and student-oriented services. Finally, we have shown the effectiveness of our approach by a comparative data study between the traditional online survey and the use of this chatbot.


2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Ho Ngoc Pham ◽  
Hai Xuan Nguyen ◽  
Anh Ngoc Nguyen ◽  
Diep Ngoc Tran

This paper presents a new approach to assess the soil quality by aggregate indices using the Relative Soil Quality Index (RSQI) proposed by Ho Ngoc Pham. RSQI is integrated from the individual indices into a simple formula for overall assessment of the soil quality. RSQI is different from other approaches. Particularly, the individual indices and the weighting factors of Pham are calculated from the analytical laboratory data and the environmental standards, respectively, and not self-regulated as in methods of some other authors. In this paper, the authors applied the RSQI to assess the Soil Environmental Quality of rice intensive cultivation areas through a case study in Haiduong province in 2013. The RSQI is calculated for sampling points in 12 districts and simulated the Soil Environmental Quality on GIS map. The results show that the Soil Environmental Quality of rice intensive cultivation areas in Haiduong is predominantly divided into three levels: good, moderate, and poor. According to the report of General Statistics Office for Haiduong province, rice intensive cultivation areas in 2013 achieved a relatively high average rice yield of 5.90 tonnes per hectare; it means actual soil properties are in line with results of the research.


Author(s):  
Alison R. Callaghan ◽  
Anoop R. Nair ◽  
Kemper E. Lewis

Abstract This paper presents a new approach to solving the orthogonal packing problem (OPP). The OPP is shown to be related to one class of resource allocation problems, namely the land allocation problem. The proposed method differs from traditional methods in that component dimensions are not prescribed, allowing designers greater flexibility and giving them the ability to choose from a number of different solutions. We will show that in removing constraints from dimensions, we allow for the possibility for finding better solutions and this is verified in the case study.


2020 ◽  
Vol 29 (4) ◽  
pp. 685-690
Author(s):  
C. S. Vanaja ◽  
Miriam Soni Abigail

Purpose Misophonia is a sound tolerance disorder condition in certain sounds that trigger intense emotional or physiological responses. While some persons may experience misophonia, a few patients suffer from misophonia. However, there is a dearth of literature on audiological assessment and management of persons with misophonia. The purpose of this report is to discuss the assessment of misophonia and highlight the management option that helped a patient with misophonia. Method A case study of a 26-year-old woman with the complaint of decreased tolerance to specific sounds affecting quality of life is reported. Audiological assessment differentiated misophonia from hyperacusis. Management included retraining counseling as well as desensitization and habituation therapy based on the principles described by P. J. Jastreboff and Jastreboff (2014). A misophonia questionnaire was administered at regular intervals to monitor the effectiveness of therapy. Results A detailed case history and audiological evaluations including pure-tone audiogram and Johnson Hyperacusis Index revealed the presence of misophonia. The patient benefitted from intervention, and the scores of the misophonia questionnaire indicated a decrease in the severity of the problem. Conclusions It is important to differentially diagnose misophonia and hyperacusis in persons with sound tolerance disorders. Retraining counseling as well as desensitization and habituation therapy can help patients who suffer from misophonia.


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