scholarly journals Multivariate Outlier Detection in Applied Data Analysis: Global, Local, Compositional and Cellwise Outliers

2020 ◽  
Vol 52 (8) ◽  
pp. 1049-1066
Author(s):  
Peter Filzmoser ◽  
Mariella Gregorich
Keyword(s):  
Data Analysis ◽  
Outlier Detection ◽  
Spatial Information ◽  
Compositional Data ◽  
Subject Area ◽  
Data Matrix ◽  
Multivariate Outlier Detection ◽  
Data Formats ◽  
Atypical Cells ◽  
The Subject

AbstractOutliers are encountered in all practical situations of data analysis, regardless of the discipline of application. However, the term outlier is not uniformly defined across all these fields since the differentiation between regular and irregular behaviour is naturally embedded in the subject area under consideration. Generalized approaches for outlier identification have to be modified to allow the diligent search for potential outliers. Therefore, an overview of different techniques for multivariate outlier detection is presented within the scope of selected kinds of data frequently found in the field of geosciences. In particular, three common types of data in geological studies are explored: spatial, compositional and flat data. All of these formats motivate new outlier concepts, such as local outlyingness, where the spatial information of the data is used to define a neighbourhood structure. Another type are compositional data, which nicely illustrate the fact that some kinds of data require not only adaptations to standard outlier approaches, but also transformations of the data itself before conducting the outlier search. Finally, the very recently developed concept of cellwise outlyingness, typically used for high-dimensional data, allows one to identify atypical cells in a data matrix. In practice, the different data formats can be mixed, and it is demonstrated in various examples how to proceed in such situations.

scholarly journals Possible Solutions to the Problems of Microfinance Organizations with the Application of Intelligent Methods of Machine Learning

2018 ◽  
Vol 12 (2) ◽  
pp. 66-71
Author(s):  
A. V. Zolotaryuk ◽  
I. A. Chechneva
Keyword(s):  
Machine Learning ◽  
Data Analysis ◽  
Subject Area ◽  
Microfinance Institutions ◽  
Learning Methods ◽  
Machine Learning Methods ◽  
Economic Information ◽  
The Subject ◽  
Intelligent Methods

The authors consider the problems associated with the activities of microfinance organizations, and directions to eliminate them. The subject of the study is the need to introduce machine learning to solve urgent problems. Machine learning methods are increasingly being implemented to analyze financial and economic information, which reduces and eliminates some of the difficulties. Although currently these methods are not widely used in the field of microfinance institutions (MFIs), there are opportunities for their application. The aim of the work is to determine the prospects for the use of these methods in MFOs. The article describes the subject area of research, associated with MFIs. The authors identify the main groups of problems related to MFOs, consider the possibility of introducing machine learning for data analysis in this area and determine the main directions of the possible use of machine learning for MFIs. The authors concluded that such methods are applicable for assessing the performance of MFIs.

scholarly journals Outlier Detection for Pandemic-Related Data Using Compositional Functional Data Analysis

2021 ◽  
pp. 251-266
Author(s):  
Christopher Rieser ◽  
Peter Filzmoser
Keyword(s):  
Outlier Detection ◽  
Functional Data Analysis ◽  
Functional Data ◽  
Subject Area ◽  
Smooth Functions ◽  
Related Data ◽  
Relative Information ◽  
The Subject ◽  
Multivariate Functional Data ◽  
Events Data

AbstractWith accurate data, governments can make the most informed decisions to keep people safer through pandemics such as the COVID-19 coronavirus. In such events, data reliability is crucial and therefore outlier detection is an important and even unavoidable issue. Outliers are often considered as the most interesting observations, because the fact that they differ from the data majority may lead to relevant findings in the subject area. Outlier detection has also been addressed in the context of multivariate functional data, thus smooth functions of several characteristics, often derived from measurements at different time points (Hubert et al. in Stat Methods Appl 24(2):177–202, 2015b). Here the underlying data are regarded as compositions, with the compositional parts forming the multivariate information, and thus only relative information in terms of log-ratios between these parts is considered as relevant for the analysis. The multivariate functional data thus have to be derived as smooth functions by utilising this relative information. Subsequently, already established multivariate functional outlier detection procedures can be used, but for interpretation purposes, the functional data need to be presented in an appropriate space. The methodology is illustrated with publicly available data around the COVID-19 pandemic to find countries displaying outlying trends.

TEACHING READING COMPREHENSION OF NARRATIVE TEXT TO THE TENTH GRADE STUDENTS

2018 ◽  
Vol 6 (2) ◽  
Author(s):  
Emi Br Bukit ◽  
Berlin Sibarani ◽  
Rika Rika
Keyword(s):  
Qualitative Research ◽  
Reading Comprehension ◽  
Data Analysis ◽  
Narrative Text ◽  
Teaching Reading ◽  
Qualitative Research Design ◽  
Analysis Technique ◽  
Tenth Grade ◽  
The Subject ◽  
Academic Year

This study aims at describing how the teachers teach reading comprehension of narrative text to the tenth grade students in Sibolangit and revealing the underlying reasons of why do they do that way. This study was conducted by using qualitative research design. The subject of this study were two english teachers who taught at tenth grade students of two SMA in Sibolangit they are : SMA Negeri  1 Sibolangit  and SMA RK Deli Murni Bandar Baru in academic year 2016/ 2017. The data were analyzed by using Miles and Huberman data analysis technique. The  technique of collecting the data was recorded from the classroom process in teaching reading comprehension of narrative text. The findings of the study show that most of teachers’ ways are not yet focusing on teaching reading comprehension but rather focusing teaching the knowledge of genre. The underlying reason of the teachers’ ways in teaching reading comprehension did not facilitate reading comprehension. It was due to the misperception of the concept of teaching reading comprehension.  Keywords : Teaching,Reading Comprehension,Narrative Text.

IMPROVING STUDENT’S VOCABULARY ACHIEVEMENT IN WITING DESCRIPTIVE TEXT THROUGH MAKE A MATCH METHOD

2013 ◽  
Vol 2 (4) ◽  
Author(s):  
Irma Lely Lumban Gaol And Johan Sinulingga
Keyword(s):  
Data Analysis ◽  
Action Research ◽  
Learning Process ◽  
Match Method ◽  
Writing Test ◽  
The Subject ◽  
Classroom Action Research ◽  
Teaching Learning ◽  
Descriptive Writing ◽  
Vocabulary Achievement

This study is concerned with the improving student’s vocabulary achievement in writing descriptive text through Make a Match Method. The objective of this study was to discover whether the use of Make a Match Method could significantly improve students’ vocabulary achievement in writing descriptive text. This study was conducted by applying Classroom Action Research which was carried out in two cycles in six meetings. The subject of this study was students of SMA Negeri 1 Pollung which consisted of 34 students. The instruments for collecting data were descriptive writing test, observation sheet, questionnaire sheet, and diary notes. The techniques for data analysis were quantitative and qualitative. It was found that teaching-learning process ran well. Students were active, enthusiastic and interested on writing descriptive text. The result of this study showed that the use of Make a Match Method significantly improved student’s vocabulary achievement in writing descriptive text.

Philosophical and Cultural Aspects of Medical Profession: Philosophical and Conceptual Peculiarities

Cultura ◽  
2019 ◽  
Vol 16 (1) ◽  
pp. 165-174
Author(s):  
Iryna MELNYCHUK ◽  
Nadiya FEDCHYSHYN ◽  
Oleg PYLYPYSHYN ◽  
Anatolii VYKHRUSHCH
Keyword(s):  
Medical Students ◽  
Medical Profession ◽  
Subject Area ◽  
Human Relations ◽  
Cultural Aspects ◽  
Cultural Proximity ◽  
Personal Qualities ◽  
The Subject ◽  
Ecological Culture ◽  
High Level

The article analyzes the philosophical and cultural view of “doctor’s professional culture” as a result of centuries-old practice of human relations, which is characterized by constancy and passed from generation to generation. Medicine is a complex system in which an important role is played by: philosophical outlook of a doctor, philosophical culture, ecological culture, moral culture, aesthetic culture, artistic culture. We have found that within the system “doctor-patient” the degree of cultural proximity becomes a factor that influences the health or life of a patient. Thus, the following factors are important here: 1) communication that suppresses a sick person; 2) the balance of cultural and intellectual levels; 3) the cultural environment of a patient which has much more powerful impact on a patient than the medical one.At the present stage, the interdependence of professional and humanitarian training of future specialists is predominant, as a highly skilled specialist can not but become a subject of philosophizing. We outlined the sphere where the doctors present a genre variety of philosophizing (philosophical novels, apologies, dialogues, diaries, aphorisms, confessions, essays, etc.). This tradition represents the original variations in the formation of future doctor’s communicative competences, which are formed in the process of medical students’ professional training.A survey conducted among medical students made it possible to establish their professional values, which are indicators of the formation of philosophical and culturological competence. It was found out that 92% of respondents believed that a doctor should demonstrate a high level of health culture (avoid drinking and smoking habits, etc.)99% of respondents favoured a high level of personal qualities of a doctor which would allow methods and forms of medical practice to assert higher human ideals of truth, goodness and beauty that are the subject area of cultural studies and philosophy.

New Approaches to Understanding Judicial Ethics in the Information

2020 ◽  
Vol 2 (3) ◽  
pp. 12-32
Author(s):  
E. V. Burdina ◽  
Keyword(s):  
Self Regulation ◽  
Legal Regulation ◽  
Subject Area ◽  
Social Needs ◽  
Legal Norms ◽  
Stage Of Development ◽  
Judicial Administration ◽  
Personal Approach ◽  
Personal Qualities ◽  
The Subject

Introduction. The article is devoted to the problems of the essence and content of judicial ethics in the new conditions of the technical revolution and with other social needs for legal regulation. Theoretical Basis. Methods. The work used a systematic, activity-personal approach to the study of moral and ethical standards of the conduct of judges. This made it possible to reveal a new and broader view on judicial ethics, which is not simply a set of moral restrictions and obligations imposed on a judge. Results. The work has identified and analysed the signs of judicial ethics at the current stage of development. It is argued that ethical regulation is precautionary in relation to the legal regulation of the independence of judges, for they complement ethical rules and reinforce legal norms. The ethical conduct of judges is an instrument guaranteeing judicial independence in all of its manifestations, including in organisational and judicial relations. The new realities of our time recognise the expansion of boundaries and the subject area itself of ethical regulation. A broader view on judicial ethics, which differs from the traditional one, is hereby justified. The latter is defined in two ways – namely both as a system of professional values, as well as a means of judicial administration based on the principle of self-regulation. By its very nature, judicial ethics is the result (and the way) of judicial self-governance, developed on the basis of the experience of functioning bodies of the judicial community. Discussion and Conclusion. Conclusions are drawn on both the instrumental and the managerial impact of the categories of ethics. The subject of judicial ethics has been defined, which constitutes the rules of conduct of judges in the performance of their professional duties and beyond – namely the set of general principles of work of a judge, as well as the personal qualities of a judge personifying the judicial power. Proposals on the optimisation of the mechanism of ethical influence, differentiation of ethical and disciplinary norms have also been substantiated.

Construction of an Achievement Test in General Science for Class IX Based on NCERT Syllabus

2018 ◽  
Vol 6 (26) ◽  
Author(s):  
Sailendra Bhuyan ◽  
Punita Borpuzari Deori
Keyword(s):  
Assessment Tool ◽  
Subject Area ◽  
Achievement Test ◽  
General Science ◽  
School Students ◽  
The People ◽  
The Subject ◽  
The Government ◽  
Time Changes ◽  
Teaching Learning

Achievement test is of very important assessment tool to evaluate the student’s current level of knowledge and skill acquired from classroom instruction. This test is designed to evaluate the student’s level of achievement in a particular subject for a particular class prescribed under the board or the university. In other words, to assess how much the pupils have achieved the educational objectives in teaching learning process at the end of the course and if achieved then to what extent, it has been achieved. Achievement tests are proved to be very helpful in various ways to the people who are involved in the field of education such as the teachers, the administrators, the planners, to the parents as well as for the students. The teacher very carefully develops and conduct achievement test in the class which enable the teacher to get an overall idea of the progress or the level of achievement of his students in the subject area. The teacher can determine the pupil’s strength and weakness in the subject area. So, based on this the teacher can take necessary remedial instructional strategies for the betterment of the pupil’s progress. In the same time, it also provides feedback for the teaching efficiency of the teacher.As with the time changes there have been many educational reforms taken place and in between syllabus had also been changed under different Boards of Studies. In order to maintain uniform standard of education the Government has formulated a policy to implement NCERT syllabus common to all School Boards throughout the country and accordingly the State Board of Secondary Education, Assam (SEBA) follow NCERT syllabus and to evaluate students’ achievement in terms of the policy formulated by the Board. Till now, no any standardized achievement test has been conducted for the secondary school students of Assam. Therefore, the investigators felt to construct and standardize an achievement test in the subject General Science which will definitely help in educational research.

Building a Culture of Ethical, Comparable, Authentic Assessment

2019 ◽  
pp. 463-481
Author(s):  
Andrew Reid ◽  
Julie Ballantyne
Keyword(s):  
Teaching And Learning ◽  
Large Scale ◽  
Authentic Assessment ◽  
Subject Area ◽  
Music Educators ◽  
System Level ◽  
Diverse Range ◽  
Effective Learning ◽  
School Based ◽  
The Subject

In an ideal world, assessment should be synonymous with effective learning and reflect the intricacies of the subject area. It should also be aligned with the ideals of education: to provide equitable opportunities for all students to achieve and to allow both appropriate differentiation for varied contexts and students and comparability across various contexts and students. This challenge is made more difficult in circumstances in which the contexts are highly heterogeneous, for example in the state of Queensland, Australia. Assessment in music challenges schooling systems in unique ways because teaching and learning in music are often naturally differentiated and diverse, yet assessment often calls for standardization. While each student and teacher has individual, evolving musical pathways in life, the syllabus and the system require consistency and uniformity. The challenge, then, is to provide diverse, equitable, and quality opportunities for all children to learn and achieve to the best of their abilities. This chapter discusses the designing and implementation of large-scale curriculum as experienced in secondary schools in Queensland, Australia. The experiences detailed explore the possibilities offered through externally moderated school-based assessment. Also discussed is the centrality of system-level clarity of purpose, principles and processes, and the provision of supportive networks and mechanisms to foster autonomy for a diverse range of music educators and contexts. Implications for education systems that desire diversity, equity, and quality are discussed, and the conclusion provokes further conceptualization and action on behalf of students, teachers, and the subject area of music.

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