title: Prediction of ordinal classes using regression trees

authors: Kramer, Stefan

subjects: computer science

abstract: This paper is devoted to the problem of learning to predict ordinal (i.e., ordered discrete) classes using classification and regression trees. We start with S-CART, a tree induction algorithm, and study various ways of transforming it into a learner for ordinal classification tasks. These algorithm variants are compared on a number of benchmark data sets to verify the relative strengths and weaknesses of the strategies and to study the trade-off between optimal categorical classification accuracy (hit rate) and minimum distance-based error. Preliminary results indicate that this is a promising avenue towards algorithms that combine aspects of classification and regression.

text: Prediction of ordinal classes using regression trees This paper is devoted to the problem of learning to predict ordinal (i.e., ordered discrete) classes using classification and regression trees. We start with S-CART, a tree induction algorithm, and study various ways of transforming it into a learner for ordinal classification tasks. These algorithm variants are compared on a number of benchmark data sets to verify the relative strengths and weaknesses of the strategies and to study the trade-off between optimal categorical classification accuracy (hit rate) and minimum distance-based error. Preliminary results indicate that this is a promising avenue towards algorithms that combine aspects of classification and regression.

year: 2000

title: The feasibility of using otolith microchemistry to trace movements of rainbow trout and common smelt in lakes Rotoiti and Rotorua

authors: Riceman, Matthew Sean

subjects: otolith microchemistry

abstract: Otolith microchemistry can be used to determine the natal origins of fish.  Our feasibility study using single water samples has determined that the water chemistry around Lakes Rotorua and Rotoiti, have different elemental compositions warranting further investigation.  We have shown that juvenile trout populations from spawning tributaries around lakes Rotorua and Rotoitit, Rotoua lakes district, New Zealand, could be grouped by using the ¹³⁷Ba:⁴³Ca isotopic ratio obtained from otolith laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) analysis. The ⁸⁸Sr:⁴³Ca isotopic ration further distinguished between different sample locations when combined with the the ¹³⁷Ba:⁴³Ca isotopic ratio. Laser ablation analysis across common smelt otoliths provided information related to the movements between different chemical habitats across the fishes life and some distinct resident and migratory pattern are presented although further investigation into migration is required. 
Our preliminary results indicate that we will be able to distinguish natal steam for juvenile rainbow trout and probably lake of origin for common smelt.

text: The feasibility of using otolith microchemistry to trace movements of rainbow trout and common smelt in lakes Rotoiti and Rotorua Otolith microchemistry can be used to determine the natal origins of fish.  Our feasibility study using single water samples has determined that the water chemistry around Lakes Rotorua and Rotoiti, have different elemental compositions warranting further investigation.  We have shown that juvenile trout populations from spawning tributaries around lakes Rotorua and Rotoitit, Rotoua lakes district, New Zealand, could be grouped by using the ¹³⁷Ba:⁴³Ca isotopic ratio obtained from otolith laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) analysis. The ⁸⁸Sr:⁴³Ca isotopic ration further distinguished between different sample locations when combined with the the ¹³⁷Ba:⁴³Ca isotopic ratio. Laser ablation analysis across common smelt otoliths provided information related to the movements between different chemical habitats across the fishes life and some distinct resident and migratory pattern are presented although further investigation into migration is required. 
Our preliminary results indicate that we will be able to distinguish natal steam for juvenile rainbow trout and probably lake of origin for common smelt.

year: 2007-05

title: "Everything has shaped you": Contributors to young Māori university students' ability to flourish

authors: Major, Darcie Ngahuia

subjects: Maori

abstract: There are many disparities when considering the health and wellbeing of Māori in Aotearoa today, and the education sector is no different, with Māori less likely to leave school with level 2 certificate or higher compared with non-Māori.  In response to the deficit orientated research on Māori and education, my thesis explores those factors contributing to young Māori tertiary students flourishing. My research includes five students from the University of Waikato who were between the ages of 17-24 years. A multi-method qualitative approach was utilised while engaging a Kaupapa Māori research framework. Participants were found to have a range of interconnected factors which contribute to their ability to flourish both inside and outside of the university.  Of particular importance to my participants was relational connectedness or whanaungatanga within and outside of the tertiary environment, landscapes which offered multiple forms of care, and notions of both collective and individual motivation. Some of the challenges experienced by my participants included a sense of socio-cultural isolation, the minimal inclusion of Māori worldviews and perspectives within the general curriculum, and the personal stress of responding to negative stereotypes of Maori as generally unproductive members of society. Flourishing for my participants is therefore multi-layered, and recognises the interconnected nature of health and wellbeing.

text: "Everything has shaped you": Contributors to young Māori university students' ability to flourish There are many disparities when considering the health and wellbeing of Māori in Aotearoa today, and the education sector is no different, with Māori less likely to leave school with level 2 certificate or higher compared with non-Māori.  In response to the deficit orientated research on Māori and education, my thesis explores those factors contributing to young Māori tertiary students flourishing. My research includes five students from the University of Waikato who were between the ages of 17-24 years. A multi-method qualitative approach was utilised while engaging a Kaupapa Māori research framework. Participants were found to have a range of interconnected factors which contribute to their ability to flourish both inside and outside of the university.  Of particular importance to my participants was relational connectedness or whanaungatanga within and outside of the tertiary environment, landscapes which offered multiple forms of care, and notions of both collective and individual motivation. Some of the challenges experienced by my participants included a sense of socio-cultural isolation, the minimal inclusion of Māori worldviews and perspectives within the general curriculum, and the personal stress of responding to negative stereotypes of Maori as generally unproductive members of society. Flourishing for my participants is therefore multi-layered, and recognises the interconnected nature of health and wellbeing.

year: 2017