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1 – 10 of 191Son Nguyen, John Quinn and Alan Olinsky
We propose an oversampling technique to increase the true positive rate (sensitivity) in classifying imbalanced datasets (i.e., those with a value for the target variable that…
Abstract
We propose an oversampling technique to increase the true positive rate (sensitivity) in classifying imbalanced datasets (i.e., those with a value for the target variable that occurs with a small frequency) and hence boost the overall performance measurements such as balanced accuracy, G-mean and area under the receiver operating characteristic (ROC) curve, AUC. This oversampling method is based on the idea of applying the Synthetic Minority Oversampling Technique (SMOTE) on only a selective portion of the dataset instead of the entire dataset. We demonstrate the effectiveness of our oversampling method with four real and simulated datasets generated from three models.
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Purpose – This paper explores a pervasive yet little explored myth that underlies much marketing theory and practice: living in harmony with nature. While previous research…
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Purpose – This paper explores a pervasive yet little explored myth that underlies much marketing theory and practice: living in harmony with nature. While previous research typically presents “harmony with nature” as something consumers can easily find by returning to a benevolent “Mother Nature,” the current research problematizes how “harmony with nature” is discursively constructed in contemporary advertisements.
Methodology/approach – This paper traces the visual genealogy of contemporary advertising imagery to explore different discursive constructions of the harmony myth. Over 600 advertisements published in Backpacker magazine between 2007 and 2009 form the database for this research.
Findings – Drawing on a more nuanced understanding of the organic framework of nature, and representations of nature in the artistic genre of Romantic landscape painting, the current research finds that divergent images of an “Arcadian” and “Dynamic” nature give rise to different constructions of harmony that are fraught with tension. Harmony might be as easily lost as it is found, or it might never be achieved at all.
Originality/value of paper – This research shows that living in harmony with nature is less harmonic than it seems. It extends previous research that adopted an implicitly unproblematic understanding of finding harmony in nature by uncovering nuances and contradictions within contemporary manifestations of the harmony myth. Implications for marketers and for our understanding of the human/nature relationship more generally are offered.
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Chapter 4 presents the research into the attributes of a stimulus, which the brain uses to construct a perception of the external stimulus. The processes used in all five senses…
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Chapter 4 presents the research into the attributes of a stimulus, which the brain uses to construct a perception of the external stimulus. The processes used in all five senses are examined and compiled into a collective model of the processes the perceptual system uses to discriminate and understand an external stimulus. While there are many commonalities across the senses, the structure of the discipline (energy) each system processes yields unique insights into the processes of the total system.
This chapter explores the potential for musical medievalism within metal, exploring the ways in which metal musicians have sought to include ‘authentic’ medieval musical languages…
Abstract
This chapter explores the potential for musical medievalism within metal, exploring the ways in which metal musicians have sought to include ‘authentic’ medieval musical languages within their music. The medieval repertoire poses many challenges even for early music specialists, and the musical idioms of metal and medieval music rarely overlap, leading many medievalist metal bands to rely instead on normative metal styles with occasional references to specific identifiable melodies. The chapter focusses particularly on the American metal band Obsequiae, who have drawn inspiration particularly from the medieval polyphonic repertoire, which required creating much more oblique musical connections. Obsequiae’s albums feature acoustic guitar and harp arrangements of medieval polyphonic works, but their metal songs likewise adopt some general qualities of medieval polyphony. The obscure nature of the connections is likely beyond many listeners, but paradoxically the lack of obvious musical medievalism can also cultivate the appearance of a deeper connection.
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This chapter investigates how musicians at jazz jam sessions engage in what I term “aggressive emergence.” In so doing, they introduce novelty, unpredictability and creativity in…
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This chapter investigates how musicians at jazz jam sessions engage in what I term “aggressive emergence.” In so doing, they introduce novelty, unpredictability and creativity in their spontaneous interactions with other musicians. In order to discuss this emergence, a notion of signs in musical communications as indexes, in the Peircean sense, is developed. To produce emergence in the ongoing development of a jam session performance, musicians must produce signs that index new directions that jazz playing can take, such as different rhythmic or harmonic accompaniments, or changes to the volume at which individuals play their instruments.
Son Nguyen, Phyllis Schumacher, Alan Olinsky and John Quinn
We study the performances of various predictive models including decision trees, random forests, neural networks, and linear discriminant analysis on an imbalanced data set of…
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We study the performances of various predictive models including decision trees, random forests, neural networks, and linear discriminant analysis on an imbalanced data set of home loan applications. During the process, we propose our undersampling algorithm to cope with the issues created by the imbalance of the data. Our technique is shown to work competitively against popular resampling techniques such as random oversampling, undersampling, synthetic minority oversampling technique (SMOTE), and random oversampling examples (ROSE). We also investigate the relation between the true positive rate, true negative rate, and the imbalance of the data.
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This chapter provides an analysis of the processes of negotiating identity in the production of improvised performance in the jazz rhythm section. I show that, for jazz musicians…
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This chapter provides an analysis of the processes of negotiating identity in the production of improvised performance in the jazz rhythm section. I show that, for jazz musicians, identity is an important and complex concern that is managed through the frame of their various role functions. This analysis aims to expand upon symbolic interactionist studies of music and to provide a critique of the “discursive” focus on music in social life.
Adrien B. Bonache and Kenneth J. Smith
This chapter combines quantitative studies of the connections between stressors and performance in accounting settings and identifies the mediators and moderators of…
Abstract
This chapter combines quantitative studies of the connections between stressors and performance in accounting settings and identifies the mediators and moderators of stressors–performance relationships. Using meta-analyses and path analyses, this research compiles 72 studies to investigate the relationships of stressors with accountant and auditor performance. As hypothesized, bivariate meta-analyses results indicate that work-related stressors negatively affect performance, and burnout and stress are negatively related to performance, whereas motivation is positively related to performance. Moreover, a meta-analytical structural equation modeling indicates that role stressors have significant direct and indirect effects (through burnout and stress) on job performance. Accumulation of multiple samples through meta-analysis bolsters statistical power compared to single-sample studies and thus reveals the sign of residual direct effects of role stressors on job performance in accounting settings.
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