A stratified sampling based clustering algorithm for large-scale data

Zhao, Xin; Liang, Jiye; Dang, Chuangyin

doi:10.1016/j.knosys.2018.09.007

Cited by 50 publications

(29 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It overcomes the shortcomings of the partial split-half method and is the most commonly used reliability analysis method in the social science research field. If the answer to the question in the questionnaire is not comprehensive and does not conform to the convention, it will be invalid (Zhao et al, 2019;Liu and Chen, 2021).…”

Section: Survey Designmentioning

confidence: 99%

Challenges of College Students’ Ideological and Political and Psychological Education in the Information Age

Dong

Liu

et al. 2021

Front. Psychol.

View full text Add to dashboard Cite

The purpose of the study is to analyze the current situation of ideological and political education and psychological education of college students, and explore the challenges faced by these two kinds of education in the information age. First, different research methods, such as literature research, questionnaire survey, and interdisciplinary research, are used to investigate and study the current situation of ideological and political education and psychological education of college students. Second, the survey data are analyzed to reveal the challenges they have encountered. The results show that there are many problems in ideological and political education, which need to be improved and strengthened. The Internet has a strong attraction for college students, but the purpose of getting online of many college students is not clear. Although it plays an important role in improving teaching quality by helping college students establish correct attitudes toward their study, values, life, and society, ideological and political education lack strong pertinence and effectiveness due to the professionalism of the teachers. And the negative impact of network information on ideological and political education of college students is also obvious. About 11.4% of the respondents believe that network information affects their physical and mental health. About 8.4% of the respondents believe that harmful information on the network is easy to induce students to behave wrongly. About 41% believe that computer games distract them from learning, which indicates that the negative impact of network information on college students cannot be underestimated, and it is imperative to strengthen the ideological and political education of college students. The research provides a useful reference for the ideological and political and psychological education in the information environment and helps to solve the problem in the ideological and political education and psychological education of college students.

show abstract

Section: Survey Designmentioning

confidence: 99%

Challenges of College Students’ Ideological and Political and Psychological Education in the Information Age

Dong

Liu

et al. 2021

Front. Psychol.

View full text Add to dashboard Cite

show abstract

“…Research has identified the impact of housing and job choices on the urban structure in surveys using a representative sample (Acheampong, 2018). A cluster sampling (Zhao et al, 2019) is used to classify large-scale data and the ability of each sample category to access the sample.…”

Section: Methodology For Evaluation Of Residential Plot Selection In mentioning

confidence: 99%

The Residence Plot Selection Model for Family House in Vilnius by Neutrosophic Waspas Method

Baušys

Juodagalvienė

Žiūrienė

et al. 2020

International Journal of Strategic Property Management

View full text Add to dashboard Cite

Good quality dwelling and the environment are related to the values of citizens’ existence. It can be highlighted as important questions in creating a sustainable living environment. The research and analysis carried out so far include global planning of the plot of a particular country or city according to economic aspects. Meanwhile, our model, which covers the key social aspects of choosing a residential house, will fill this gap. We propose an original problem formulated which includes the planning of the plot of a particular city according to economic, environmental and social aspects. Our work aims to investigate the criteria for the selection of single-family houses and to develop a theoretical evaluation model based on decision-making methods. The presented study deals with the problem of selecting a one-family house plot using the Weighted Aggregate Sum Product Assessment Methods (WASPAS) and the Step-Wise Weight Assessment Ratio Analysis Method (SWARA). During the research, parameters related to plot selection were evaluated: infrastructure, distance, cost, privacy, security and aesthetic view.

show abstract

“…Our manual study is composed of the following phases: Phase I: We use stratified random sampling, with a 95% confidence level and 5% confidence interval, to acquire 368 samples from the test annotation changes identified by our RefactoringMiner extension. We adopted stratified random sampling to sample each studied system independently to reduce sampling error when a sub-population within the overall population varies [30]. Phase II: To create the taxonomy for the test annotations, we first classified the changes at a high level based on the annotation type (e.g., @Ignore).…”

Section: Rq3: Why Do Developers Change Test Annotations?mentioning

confidence: 99%

Studying Test Annotation Maintenance in the Wild

Kim

Tsantalis

Chen

et al. 2021

2021 IEEE/ACM 43rd International Conference on Software Engineering (ICSE)

View full text Add to dashboard Cite

Since the introduction of annotations in Java 5, the majority of testing frameworks, such as JUnit, TestNG, and Mockito, have adopted annotations in their core design. This adoption affected the testing practices in every step of the test lifecycle, from fixture setup and test execution to fixture teardown. Despite the importance of test annotations, most research on test maintenance has mainly focused on test code quality and test assertions. As a result, there is little empirical evidence on the evolution and maintenance of test annotations. To fill this gap, we perform the first fine-grained empirical study on annotation changes. We developed a tool to mine 82,810 commits and detect 23,936 instances of test annotation changes from 12 open-source Java projects. Our main findings are: (1) Test annotation changes are more frequent than rename and type change refactorings. (2) We recover various migration efforts within the same testing framework or between different frameworks by analyzing common annotation replacement patterns. (3) We create a taxonomy by manually inspecting and classifying a sample of 368 test annotation changes and documenting the motivations driving these changes. Finally, we present a list of actionable implications for developers, researchers, and framework designers.

show abstract

A stratified sampling based clustering algorithm for large-scale data

Cited by 50 publications

References 37 publications

Challenges of College Students’ Ideological and Political and Psychological Education in the Information Age

Challenges of College Students’ Ideological and Political and Psychological Education in the Information Age

The Residence Plot Selection Model for Family House in Vilnius by Neutrosophic Waspas Method

Studying Test Annotation Maintenance in the Wild

Contact Info

Product

Resources

About