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Book part
Publication date: 15 March 2021

Jochen Hartmann

Across disciplines, researchers and practitioners employ decision tree ensembles such as random forests and XGBoost with great success. What explains their popularity? This…

Abstract

Across disciplines, researchers and practitioners employ decision tree ensembles such as random forests and XGBoost with great success. What explains their popularity? This chapter showcases how marketing scholars and decision-makers can harness the power of decision tree ensembles for academic and practical applications. The author discusses the origin of decision tree ensembles, explains their theoretical underpinnings, and illustrates them empirically using a real-world telemarketing case, with the objective of predicting customer conversions. Readers unfamiliar with decision tree ensembles will learn to appreciate them for their versatility, competitive accuracy, ease of application, and computational efficiency and will gain a comprehensive understanding why decision tree ensembles contribute to every data scientist's methodological toolbox.

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The Machine Age of Customer Insight
Type: Book
ISBN: 978-1-83909-697-6

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Book part
Publication date: 24 November 2014

John Paul Stephens

In this chapter, I re-frame leading in organizing as teaching and identify physical movement as a core mechanism through which leaders are sensitive and responsive to the progress…

Abstract

In this chapter, I re-frame leading in organizing as teaching and identify physical movement as a core mechanism through which leaders are sensitive and responsive to the progress of their group’s learning. To demonstrate this, I analyze interview data with choral and orchestral conductors in terms of Sheets-Johnstone’s (1999/2011) four qualities of movement: tension, linearity, amplitude, and projection. These four qualities serve as a grammar or set of basic categories to better understand how and why leaders move in certain ways in relation to their followers, for the sake of the latter’s learning and the collective ability to accomplish organizational goals. The ability to categorize conductors’ physical movements and the movement of the ensemble’s learning can help practitioners and scholars to assess the congruence between the two. With this grammar in hand, leaders can better assess and articulate what kinds of movements can be performed when, in order to guide the progress of their group’s collective learning.

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The Physicality of Leadership: Gesture, Entanglement, Taboo, Possibilities
Type: Book
ISBN: 978-1-78441-289-0

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Self-Learning and Adaptive Algorithms for Business Applications
Type: Book
ISBN: 978-1-83867-174-7

Book part
Publication date: 21 July 2017

Claudy Jules

Nonprofits that expand their work beyond their home country’s borders have to perform in unfamiliar territory, with unfamiliar risks, in cooperation or collaboration with…

Abstract

Nonprofits that expand their work beyond their home country’s borders have to perform in unfamiliar territory, with unfamiliar risks, in cooperation or collaboration with unfamiliar people, on topics or problems that likely sit at the intersection of public, private, and social sectors. How can a global nonprofit’s leaders best prepare themselves to meet these challenges when taking an organization global or seeking to gain traction in new geographies? To answer these questions, this chapter describes four prominent ensemble configurations, and then suggests what global nonprofits can do to develop leaders who can pull the most value from diversity. It also describes four distinct “blueprints” for operating models, and how to shift to a different model, as a leadership team, with members who, together, possess a deep knowledge of the various markets in which the nonprofit operates.

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Advances in Global Leadership
Type: Book
ISBN: 978-1-78714-698-3

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Book part
Publication date: 24 March 2006

Valeriy V. Gavrishchaka

Increasing availability of the financial data has opened new opportunities for quantitative modeling. It has also exposed limitations of the existing frameworks, such as low…

Abstract

Increasing availability of the financial data has opened new opportunities for quantitative modeling. It has also exposed limitations of the existing frameworks, such as low accuracy of the simplified analytical models and insufficient interpretability and stability of the adaptive data-driven algorithms. I make the case that boosting (a novel, ensemble learning technique) can serve as a simple and robust framework for combining the best features of the analytical and data-driven models. Boosting-based frameworks for typical financial and econometric applications are outlined. The implementation of a standard boosting procedure is illustrated in the context of the problem of symbolic volatility forecasting for IBM stock time series. It is shown that the boosted collection of the generalized autoregressive conditional heteroskedastic (GARCH)-type models is systematically more accurate than both the best single model in the collection and the widely used GARCH(1,1) model.

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Econometric Analysis of Financial and Economic Time Series
Type: Book
ISBN: 978-1-84950-388-4

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Stories and Lessons from the World's Leading Opera, Orchestra Librarians, and Music Archivists, Volume 1: North and South America
Type: Book
ISBN: 978-1-80117-653-8

Book part
Publication date: 10 December 2018

David M. Boje

This chapter relates quantum storytelling consulting (QSC) to ensemble leadership theory (ELT) by Rosile, Boje, & Claw (2016). What kinds of leadership does it take to attend to…

Abstract

This chapter relates quantum storytelling consulting (QSC) to ensemble leadership theory (ELT) by Rosile, Boje, & Claw (2016). What kinds of leadership does it take to attend to the forecaring in advance of the future and how does this relate to quantum storytelling? In a music ensemble, no one musician is the star: they are equal, all are the stars of the show, emerging as stars and then taking a supporting role in cyclic rotation. ELT is important to the world ecology because it is a together-we-are-all-leaders approach. Rather than restricting leadership to one or a few people, the ensemble of many networks of leadership is important. I will contrast ELT with more familiar models of leadership: dispersed, distributed, and relational that restrict leadership to a few. One primary difference is that ELT includes both community and ecology and it is rooted in Indigenous Ways of Knowing (IWOK) that extend from the ancient Southwest US and Mexico. My contribution here is to recognize that ELT is rooted in the rhizomatic fractal, whereas the other models of leadership discussed here (dispersed, distributed, and relational) have been linear-, cyclic-, or spiral-fractal waves. A fractal is defined as recurring self-sameness patterns across scalabilities. I will look to Deleuzian rhizomatic-fractals, which ELT purports to be and make an observation: ELT revived and reinvented in late modern capitalism, must be a correlate with the dominant hierarchic kinds of leadership of here and now, which is this world situation we are now in. Does not each revolution (steam, diesel/gas combustion, cyber-information, and liquid modernity) actually create anew the enslavement of human beings in hierarchic forms of leadership? At the end of this chapter, ensemble leadership will be related to whole-world ecological health.

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The Emerald Handbook of Quantum Storytelling Consulting
Type: Book
ISBN: 978-1-78635-671-0

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Forming and Centering
Type: Book
ISBN: 978-1-78635-829-5

Book part
Publication date: 19 November 2015

Kimberly McCord

Music education and music therapy offer many positive benefits for students with disabilities. This chapter highlights some of the most recent research in both fields and in…

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Music education and music therapy offer many positive benefits for students with disabilities. This chapter highlights some of the most recent research in both fields and in neuroscience that offers strategies for special educators to use to increase inclusion in music classes and ensembles.

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Interdisciplinary Connections to Special Education: Key Related Professionals Involved
Type: Book
ISBN: 978-1-78441-663-8

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Tribal Wisdom for Business Ethics
Type: Book
ISBN: 978-1-78635-288-0

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