title: Optimization and application of mixed regression models based on the expectation maximization algorithm

authors: Ding, Jiahui

subjects: clusterwise linear regression

abstract: This study further explores clusterwise linear regression (CLR), specifically the expectation maximization (EM) algorithm. The algorithm was quantitatively analyzed through the generated data set. Previous regression methods are integrated and improved to provide better performance in dealing with complex conditions. The model was tested under different independent variables and methodologies, conclusions were drawn from the quantitative results, and optimal solutions under different scenarios were summarized. In addition, the application of the EM algorithm is deduced. The core purpose of this study is to test the reliability and performance of these methods in different situations. By generating diverse data, simulating different environments, and testing various model combinations, we can obtain the optimal regression model combination under different environments. The contribution of this study is to provide an effective and flexible tool for the application of hybrid regression models and provide a reference for future improvements and optimizations. Through this research, we hope to provide new solutions for application scenarios such as market segmentation, medical data analysis, and financial risk management, and provide a theoretical basis for personalized medicine and precision marketing strategies.

text: Optimization and application of mixed regression models based on the expectation maximization algorithm This study further explores clusterwise linear regression (CLR), specifically the expectation maximization (EM) algorithm. The algorithm was quantitatively analyzed through the generated data set. Previous regression methods are integrated and improved to provide better performance in dealing with complex conditions. The model was tested under different independent variables and methodologies, conclusions were drawn from the quantitative results, and optimal solutions under different scenarios were summarized. In addition, the application of the EM algorithm is deduced. The core purpose of this study is to test the reliability and performance of these methods in different situations. By generating diverse data, simulating different environments, and testing various model combinations, we can obtain the optimal regression model combination under different environments. The contribution of this study is to provide an effective and flexible tool for the application of hybrid regression models and provide a reference for future improvements and optimizations. Through this research, we hope to provide new solutions for application scenarios such as market segmentation, medical data analysis, and financial risk management, and provide a theoretical basis for personalized medicine and precision marketing strategies.

year: 2024-09-12

title: An investigation into travellers repatriating to New Zealand, having completed their OE.

authors: Walter, Naomi Jane

subjects: OE

abstract: The overseas experience (OE) is an extended journey undertaken by young adults who travel and work abroad.  It provides personal development in terms of independence, initiative, cultural awareness and other competencies identified as fundamental to the global careers of the 21st century.  However, scholars suggest that re-entry is often harder than leaving.  They have examined the phases of transition back to the home country and generated theories like the W-curve of repatriation.  Yet the broad issues of OE repatriation, specifically, have not been addressed.  This research, therefore, investigates the experiences of OE travellers returning home to New Zealand.  The OE has become an important part of New Zealand's culture, and while diaspora initiatives connect valuable expatriate resources, they fail to consider the wider implications of repatriation.  For that reason, this research explores the personal experiences of OE returnees through in-depth conversational style interviews, specifically pertaining to relationships with friends and family, employment opportunities, and personal development.

The results of the research show that repatriation is an individual and subjective experience; a period of transition occurs, sometimes involving depression, distress, or difficult periods of adjustment, that vary in intensity based on factors like personality, readiness for return, and coping style.  This transition comprises first impressions and a comparison of home and overseas, followed by the thought of 'what's next?'  Eventually, returnees who remain at home readjust to the culture and adapt their priorities and behaviours until the OE is  like a dream .  As such, this thesis posits that the return home from travel, and the personal life event experiences of returnees, are fundamental dimensions of the tourism experience that are yet to be fully understood in tourism research.  In essence, this thesis examines travel from a holistic perspective, as part of the wider life course of individuals, and argues that researchers should consider the realities of the tourism experience, and adjust their data collection methods accordingly.

text: An investigation into travellers repatriating to New Zealand, having completed their OE. The overseas experience (OE) is an extended journey undertaken by young adults who travel and work abroad.  It provides personal development in terms of independence, initiative, cultural awareness and other competencies identified as fundamental to the global careers of the 21st century.  However, scholars suggest that re-entry is often harder than leaving.  They have examined the phases of transition back to the home country and generated theories like the W-curve of repatriation.  Yet the broad issues of OE repatriation, specifically, have not been addressed.  This research, therefore, investigates the experiences of OE travellers returning home to New Zealand.  The OE has become an important part of New Zealand's culture, and while diaspora initiatives connect valuable expatriate resources, they fail to consider the wider implications of repatriation.  For that reason, this research explores the personal experiences of OE returnees through in-depth conversational style interviews, specifically pertaining to relationships with friends and family, employment opportunities, and personal development.

The results of the research show that repatriation is an individual and subjective experience; a period of transition occurs, sometimes involving depression, distress, or difficult periods of adjustment, that vary in intensity based on factors like personality, readiness for return, and coping style.  This transition comprises first impressions and a comparison of home and overseas, followed by the thought of 'what's next?'  Eventually, returnees who remain at home readjust to the culture and adapt their priorities and behaviours until the OE is  like a dream .  As such, this thesis posits that the return home from travel, and the personal life event experiences of returnees, are fundamental dimensions of the tourism experience that are yet to be fully understood in tourism research.  In essence, this thesis examines travel from a holistic perspective, as part of the wider life course of individuals, and argues that researchers should consider the realities of the tourism experience, and adjust their data collection methods accordingly.

year: 2006

title: The enowning of thought and whakapapa: Heidegger's fourfold

authors: Mika, Carl Te Hira

subjects: Maori

abstract: Throughout colonization, Maori have been constantly urged to think of their terminology, and the objects it relates to, along constrained lines. In this practice, the self and other things are arguably restricted and impoverished. However, certain frequently used Maori terms – such as “whakapapa” and “whakaaro” – may be read alongside Heidegger’s “Ereignis,” revealing a completely other sense to them than their orthodox, respective translations of “genealogy” and “to think” allow. This kind of thinking in concert with an existential philosophy is an active process that allows for the “freeing up” of entities and a colonized group. With Heidegger’s assistance, the terms, and the original sources they refer to, reflect a kind of “Geviert”/Fourfold that ensures a continual strife and interplay between things in the world and self.

text: The enowning of thought and whakapapa: Heidegger's fourfold Throughout colonization, Maori have been constantly urged to think of their terminology, and the objects it relates to, along constrained lines. In this practice, the self and other things are arguably restricted and impoverished. However, certain frequently used Maori terms – such as “whakapapa” and “whakaaro” – may be read alongside Heidegger’s “Ereignis,” revealing a completely other sense to them than their orthodox, respective translations of “genealogy” and “to think” allow. This kind of thinking in concert with an existential philosophy is an active process that allows for the “freeing up” of entities and a colonized group. With Heidegger’s assistance, the terms, and the original sources they refer to, reflect a kind of “Geviert”/Fourfold that ensures a continual strife and interplay between things in the world and self.

year: 2014