title: Efficient multi-label classification for evolving data streams

authors: Read, Jesse

subjects: computer science

abstract: Many real world problems involve data which can be considered as multi-label data streams. Efficient methods exist for multi-label classification in non streaming scenarios. However, learning in evolving streaming scenarios is more challenging, as the learners must be able to adapt to change using limited time and memory.
This paper proposes a new experimental framework for studying multi-label evolving stream classification, and new efficient methods that combine the best practices in streaming scenarios with the best practices in multi-label classification. We present a Multi-label Hoeffding Tree with multilabel classifiers at the leaves as a base classifier. We obtain fast and accurate methods, that are well suited for this challenging multi-label classification streaming task. Using the new experimental framework, we test our methodology by performing an evaluation study on synthetic and real-world datasets. In comparison to well-known batch multi-label methods, we obtain encouraging results.

text: Efficient multi-label classification for evolving data streams Many real world problems involve data which can be considered as multi-label data streams. Efficient methods exist for multi-label classification in non streaming scenarios. However, learning in evolving streaming scenarios is more challenging, as the learners must be able to adapt to change using limited time and memory.
This paper proposes a new experimental framework for studying multi-label evolving stream classification, and new efficient methods that combine the best practices in streaming scenarios with the best practices in multi-label classification. We present a Multi-label Hoeffding Tree with multilabel classifiers at the leaves as a base classifier. We obtain fast and accurate methods, that are well suited for this challenging multi-label classification streaming task. Using the new experimental framework, we test our methodology by performing an evaluation study on synthetic and real-world datasets. In comparison to well-known batch multi-label methods, we obtain encouraging results.

year: 2010-05

title: Work attitudes and well-being among virtual workers

authors: Witzel, Marisa

subjects: virtual work

abstract: The present study examined how certain characteristics of flexible work, the home environment, and the individual impact the outcomes of work-family conflict, job satisfaction, organisational commitment, and psychological strain.  
	A questionnaire measuring perceptions of control, flexibility, job involvement, family involvement, work to family and family to work conflict, organisational commitment, job satisfaction, family support, physical boundaries, workplace isolation, psychological strain, personality, and demographic information was created and posted online.  An email was circulated to 390 virtual sales employees from one large organisation in the United States inviting them to participate in the study, and 278 people responded.  
Results identified characteristics of the type of work, work enivronment, and the individual that are predictive of individual and organisational outcomes. Findings supported hypotheses that control, flexibility, and family support positively impact the outcomes of conflict, satisfaction, and strain for virtual workers.  Job involvement was found as predicted to positively impact work to family conflict, and family involvement was positively related to family to work conflict.  Contrary to predictions, a negative relationship was found between job involvement and strain, suggesting that those who identify more highly with their job also 
experience less strain. Consistent with earlier studies, workplace isolation was associated with reduced job satisfaction and organisational commitment (Marshall, Michaels, and Mulki, 2007). In line with boundary theory (Voydanoff, 2005), it was hypothesised that the presence of physical boundaries between work and non work domains would significantly impact measures of conflict and strain for virtual workers. However, results indicated no significant effects.
A comparison of perceptions of work-family conflict between individuals with children at home and those without illustrated no significant differences between employees with children at home and those without.  Speculated explanations for inconsistent findings are addressed in the discussion chapter.
	Work to family conflict was predicted to mediate the relationship between flexibility and job satisfaction for virtual workers, and analysis supported the presence of partial mediation.  Family to work conflict was also predicted to mediate the flexibility and job satisfaction relationship, however, results were not significant in this case.  Uses of workspace (i.e. for work, leisure, family activities, etc.) were tested as mediator for the relationship between family to work conflict and job satisfaction, and results did not support a mediation effect.  
	In sum, findings of this study identify sources of both positive and negative outcomes for people working from home.  Although individuals' experiences working virtually differ greatly, this study identifies common  
challenges and issues they face.  By pinpointing the sources of conflict, satisfaction, commitment, and strain in the home office, organisations and individuals can take steps to protect workers against negative outcomes, and maximise positive outcomes.  Implications and limitations of this study are discussed in the final chapter.

text: Work attitudes and well-being among virtual workers The present study examined how certain characteristics of flexible work, the home environment, and the individual impact the outcomes of work-family conflict, job satisfaction, organisational commitment, and psychological strain.  
	A questionnaire measuring perceptions of control, flexibility, job involvement, family involvement, work to family and family to work conflict, organisational commitment, job satisfaction, family support, physical boundaries, workplace isolation, psychological strain, personality, and demographic information was created and posted online.  An email was circulated to 390 virtual sales employees from one large organisation in the United States inviting them to participate in the study, and 278 people responded.  
Results identified characteristics of the type of work, work enivronment, and the individual that are predictive of individual and organisational outcomes. Findings supported hypotheses that control, flexibility, and family support positively impact the outcomes of conflict, satisfaction, and strain for virtual workers.  Job involvement was found as predicted to positively impact work to family conflict, and family involvement was positively related to family to work conflict.  Contrary to predictions, a negative relationship was found between job involvement and strain, suggesting that those who identify more highly with their job also 
experience less strain. Consistent with earlier studies, workplace isolation was associated with reduced job satisfaction and organisational commitment (Marshall, Michaels, and Mulki, 2007). In line with boundary theory (Voydanoff, 2005), it was hypothesised that the presence of physical boundaries between work and non work domains would significantly impact measures of conflict and strain for virtual workers. However, results indicated no significant effects.
A comparison of perceptions of work-family conflict between individuals with children at home and those without illustrated no significant differences between employees with children at home and those without.  Speculated explanations for inconsistent findings are addressed in the discussion chapter.
	Work to family conflict was predicted to mediate the relationship between flexibility and job satisfaction for virtual workers, and analysis supported the presence of partial mediation.  Family to work conflict was also predicted to mediate the flexibility and job satisfaction relationship, however, results were not significant in this case.  Uses of workspace (i.e. for work, leisure, family activities, etc.) were tested as mediator for the relationship between family to work conflict and job satisfaction, and results did not support a mediation effect.  
	In sum, findings of this study identify sources of both positive and negative outcomes for people working from home.  Although individuals' experiences working virtually differ greatly, this study identifies common  
challenges and issues they face.  By pinpointing the sources of conflict, satisfaction, commitment, and strain in the home office, organisations and individuals can take steps to protect workers against negative outcomes, and maximise positive outcomes.  Implications and limitations of this study are discussed in the final chapter.

year: 2008

title: A Kaupapa Māori Intervention on Apology for LDS Church's Racism, Zombie Concepts, and Moving Forward

authors: Simon, Hemopereki

abstract: This intervention paper, based on the Kaupapa Māori writing inquiry, aims to offer an alternative path forward to the idea that The Church of Jesus Christ of Latter-day Saints should apologise for its racism. It argues that an apology is redundant to the Indigenous World. The goal is for better Church-Indigenous relations in the face of racism rooted in The Book of Mormon, Church Policy, doctrine, teachings, and theology. The author develops a positionality and outlines mahi tuhituhi as a Kaupapa Māori (post) qualitative writing inquiry. The Author then moves to contextualise these issues by framing them with what sociologists describe as Zombie Concepts. A brief overview of the Book of Mormon and its significance in Mormonism is provided. Following that, an understanding of the connection between Aileen Moreton-Robinson's white possessive and Lamanitism is provided. Hagoth and his relationship with Tāngata Moana (Māori and Pacific Peoples) is then addressed. Recent remarks by Thomas Murphy to help readers understand the racism in the Book of Mormon. Other issues for Indigenous Peoples are highlighted, with an emphasis on anachronisms and the Book of Mormon's plagiarism. The investigation then shifts to provide Veracini's commentary on settling to build relationality is discussed from the viewpoint of Aotearoa New Zealand. A discussion of the issues is followed by an outline of the research's consequences, which include seven issues that need to be addressed as part of the relationality building in order to create a collaborative future values-based project to move Church-Indigenous relations forward in a positive way.

text: A Kaupapa Māori Intervention on Apology for LDS Church's Racism, Zombie Concepts, and Moving Forward This intervention paper, based on the Kaupapa Māori writing inquiry, aims to offer an alternative path forward to the idea that The Church of Jesus Christ of Latter-day Saints should apologise for its racism. It argues that an apology is redundant to the Indigenous World. The goal is for better Church-Indigenous relations in the face of racism rooted in The Book of Mormon, Church Policy, doctrine, teachings, and theology. The author develops a positionality and outlines mahi tuhituhi as a Kaupapa Māori (post) qualitative writing inquiry. The Author then moves to contextualise these issues by framing them with what sociologists describe as Zombie Concepts. A brief overview of the Book of Mormon and its significance in Mormonism is provided. Following that, an understanding of the connection between Aileen Moreton-Robinson's white possessive and Lamanitism is provided. Hagoth and his relationship with Tāngata Moana (Māori and Pacific Peoples) is then addressed. Recent remarks by Thomas Murphy to help readers understand the racism in the Book of Mormon. Other issues for Indigenous Peoples are highlighted, with an emphasis on anachronisms and the Book of Mormon's plagiarism. The investigation then shifts to provide Veracini's commentary on settling to build relationality is discussed from the viewpoint of Aotearoa New Zealand. A discussion of the issues is followed by an outline of the research's consequences, which include seven issues that need to be addressed as part of the relationality building in order to create a collaborative future values-based project to move Church-Indigenous relations forward in a positive way.

year: 2023