An Empirical Study on the Difference of the Housing Satisfaction among the Residential type of the Housing Voucher Beneficiaries

2017 ◽  
Vol 15 (3) ◽  
pp. 185-209 ◽  
Author(s):  
Seung Geun Ham ◽  
◽  
Min Seub Choi ◽  
Keyword(s):  
Empirical Study ◽  
Housing Satisfaction ◽  
The Difference ◽  
Housing Voucher

An Empirical Study of Boosting Methods on Severely Imbalanced Data

2014 ◽  
Vol 513-517 ◽  
pp. 2510-2513 ◽  
Author(s):  
Xu Ying Liu
Keyword(s):  
Empirical Study ◽  
Real World ◽  
Class Imbalance ◽  
Imbalanced Data ◽  
Real World Applications ◽  
Under Sampling ◽  
The Difference ◽  
Imbalance Learning ◽  
Class Imbalance Learning ◽  
F Measure

Nowadays there are large volumes of data in real-world applications, which poses great challenge to class-imbalance learning: the large amount of the majority class examples and severe class-imbalance. Previous studies on class-imbalance learning mainly focused on relatively small or moderate class-imbalance. In this paper we conduct an empirical study to explore the difference between learning with small or moderate class-imbalance and learning with severe class-imbalance. The experimental results show that: (1) Traditional methods cannot handle severe class-imbalance effectively. (2) AUC, G-mean and F-measure can be very inconsistent for severe class-imbalance, which seldom appears when class-imbalance is moderate. And G-mean is not appropriate for severe class-imbalance learning because it is not sensitive to the change of imbalance ratio. (3) When AUC and G-mean are evaluation metrics, EasyEnsemble is the best method, followed by BalanceCascade and under-sampling. (4) A little under-full balance is better for under-sampling to handle severe class-imbalance. And it is important to handle false positives when design methods for severe class-imbalance.

scholarly journals A Nonparametric Two-Sample Wald Test of Equality of Variances

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
David Allingham ◽  
J. C. W. Rayner
Keyword(s):  
Maximum Likelihood ◽  
Empirical Study ◽  
Maximum Likelihood Estimators ◽  
Wald Test ◽  
Sample Sizes ◽  
Random Samples ◽  
Sample Test ◽  
The Difference ◽  
Sample Variances

We develop a test for equality of variances given two independent random samples of observations. The test can be expected to perform well when both sample sizes are at least moderate and the sample variances are asymptotically equivalent to the maximum likelihood estimators of the population variances. The test is motivated by and is here assessed for the case when both populations sampled are assumed to be normal. Popular choices of test would be the two-sample test if normality can be assumed and Levene’s test if this assumption is dubious. Another competitor is the Wald test for the difference in the population variances. We give a nonparametric analogue of this test and call it the test. In an indicative empirical study when both populations are normal, we find that when both sample sizes are at least 25 the test is nearly as robust as Levene’s test and nearly as powerful as the test.

scholarly journals Comparison of influence of selected viral advertising attributes on shopping behavior of Millennials – empirical study

2020 ◽  
Vol 16 (3) ◽  
pp. 14-25
Author(s):  
Martin Mudrik ◽  
Martin Rigelsky ◽  
Beata Gavurova ◽  
Radovan Bačik ◽  
Richard Fedorko
Keyword(s):  
Empirical Study ◽  
Purchase Intention ◽  
Parametric Method ◽  
Shopping Behavior ◽  
Second Step ◽  
Purchasing Behavior ◽  
The Difference ◽  
The Impact ◽  
Vega 1 ◽  
Research Grant

The study aims to evaluate the impact of selected factors of viral campaigns on Millennials customers’ consumer behavior. This goal was achieved in two steps: in the first step, the authors determined the impact of selected attributes on purchasing behavior in general, and in the second step, they compared the impact of the selected research campaigns – the guerrilla campaign of the company 4KA and the viral campaign of the company ABSOLUT. The inputs to the analyses were obtained through answers from 360 respondents, which completed the questionnaire on a sample of Millennials customers generation (1975–2000) – social generation, which collaborate and cooperate, expect technology to simply work for adventure and passionate about values (Smith, Nichols, 2015). The survey part of the questionnaire consisted of 8 attributes (Novelty, Relevance, Aesthetics, Clarity, Humor, Emotion arousal, Surprise, Design, Purchase intention). Data were collected based on participants’ availability and their will to participate in the questionnaire and quota selection. The PLS PM method was used to assess the impact, and the bootstrap-based parametric method was used to assess the difference in the impact. One of the most important findings is that attributes such as Novelty, Relevance, Humor, and Surprise significantly affect purchasing behavior. Concerning the company 4KA, significant impacts were seen in Relevance and Surprise, and with the company ABSOLUT, significant impacts were seen in Relevance, Humor, and Surprise. When analyzing the difference in the impact, there were no significant differences between the campaigns. Acknowledgment This article is one of the partial outputs under the scientific research grant VEGA 1/0694/20, VEGA 1/0609/19.

Ethical Ideology of Business Students in India: An Empirical Study

Think India ◽  
2017 ◽  
Vol 20 (2) ◽  
pp. 01-10
Author(s):  
Manjit Kour
Keyword(s):  
Empirical Study ◽  
Business Students ◽  
Two Dimensions ◽  
Female Students ◽  
Ethical Ideology ◽  
Ethical Orientation ◽  
Male And Female ◽  
Postgraduate Students ◽  
The Difference ◽  
Position Questionnaire

This study examines the ethical ideology of business students in the state of Punjab, India. This study uses Ethics position Questionnaire (Forsyth, 1980) to determine ethical ideology on basis of two dimensions-idealism and relativism. The sample consists of 160 postgraduate students studying in three universities in Punjab. It is found that most of the students are idealistic in their ethical orientation and fall into situationist category. It is also found that the difference of idealism and relativism scores between male and female students is not significant.

WALKING CLOCKS AND SWIRLING GORGES: CONSTRUAL OF OBJECTS AND EVENTS IN DESCRIPTIONS OF PAINTINGS

2021 ◽  
pp. 35-46
Author(s):  
O.K. Iriskhanova ◽  
◽  
O.N. Prokofyeva ◽  
Keyword(s):  
Empirical Study ◽  
The Other ◽  
Other Hand ◽  
Artistic Styles ◽  
The Difference ◽  
The One ◽  
Discourse Units ◽  
Event Construal

Despite numerous studies, the difference between objects and events remains one of the most debatable issues, and scholars look for arguments relying on ontology, epistemology, and language. The authors of the paper hypothesize that differences between objects and events construal can be observed not only in linguistic expressions referring to these entities, but in the gestures that accompany them. To verify the hypothesis, an empirical study was carried out, with 20 Russian participants spontaneously describing four paintings belonging to different artistic styles. The authors analyze co-occurrence of the units of speech (Elementary Discourse Units, or EDU) denoting either objects or events with gestures classified into mimetic modes and mimetic categories (Molding, Acting, Drawing, and Representing categories). The results show that there exists significant correlation between object-construal EDU and Molding gestures, on the one hand, and between event-construal EDU and Acting gestures, on the other hand. Besides, the study reveals that some speech-gesture patterns relate to such qualities of the paintings, as content, style, genre, and technique.

Sign in / Sign up

Export Citation Format

Share Document