title: Experiment databases: A new way to share, organize and learn from experiments

authors: Vanschoren, Joaquin

subjects: experimental methodology

abstract: Thousands of machine learning research papers contain extensive experimental comparisons. However, the details of those experiments are often lost after publication, making it impossible to reuse these experiments in further research, or reproduce them to verify the claims made. In this paper, we present a collaboration framework designed to easily share machine learning experiments with the community, and automatically organize them in public databases. This enables immediate reuse of experiments for subsequent, possibly much broader investigation and offers faster and more thorough analysis based on a large set of varied results. We describe how we designed such an experiment database, currently holding over 650,000 classification experiments, and demonstrate its use by answering a wide range of interesting research questions and by verifying a number of recent studies.

text: Experiment databases: A new way to share, organize and learn from experiments Thousands of machine learning research papers contain extensive experimental comparisons. However, the details of those experiments are often lost after publication, making it impossible to reuse these experiments in further research, or reproduce them to verify the claims made. In this paper, we present a collaboration framework designed to easily share machine learning experiments with the community, and automatically organize them in public databases. This enables immediate reuse of experiments for subsequent, possibly much broader investigation and offers faster and more thorough analysis based on a large set of varied results. We describe how we designed such an experiment database, currently holding over 650,000 classification experiments, and demonstrate its use by answering a wide range of interesting research questions and by verifying a number of recent studies.

year: 2012

title: Classification and discrimination of automotive glass using LA-ICP-MS

authors: Grainger, Megan N.C.

subjects: automotive glass

abstract: Glass is one of the most common types of trace evidence found at crime scenes and on suspects. The elemental analysis of float glass has become increasingly important as the range in values of refractive index has substantially narrowed due to increased quality control in glass manufacture. The purpose of this research was to investigate the variation of elements in automotive float glass relevant to New Zealand for the purpose of classifying and discriminating samples. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was used to analyse the elemental composition of 243 automotive glass samples. An intact side window (tempered pane) and an intact windscreen (laminated pane) were analysed to investigate the spatial trend of elements in automotive glass. Most elements displayed no spatial variation over the panes. Pb had the largest variation in the windscreen and was also found to have a large variation in the database. Most samples were able to be classified into the vehicles' country of origin using a multiclass classifier. However, this was not possible for all samples, due to the origin of glass differing from the origin of the vehicle in some cases. The elemental composition of Australian and Northern Hemisphere samples differed greatly making them easy to separate; however, there was little variation within the Australian samples, making it hard to discriminate between different samples. A three step method, which combined the use of elemental composition, △RI and RI, was used to discriminate database samples. The method distinguished 84% (172/204) of samples in the database. When Australian samples were removed from the analysis, the discrimination increased to 95% (148/156). The type II errors were reduced by using both elemental composition and RI measurement.

text: Classification and discrimination of automotive glass using LA-ICP-MS Glass is one of the most common types of trace evidence found at crime scenes and on suspects. The elemental analysis of float glass has become increasingly important as the range in values of refractive index has substantially narrowed due to increased quality control in glass manufacture. The purpose of this research was to investigate the variation of elements in automotive float glass relevant to New Zealand for the purpose of classifying and discriminating samples. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was used to analyse the elemental composition of 243 automotive glass samples. An intact side window (tempered pane) and an intact windscreen (laminated pane) were analysed to investigate the spatial trend of elements in automotive glass. Most elements displayed no spatial variation over the panes. Pb had the largest variation in the windscreen and was also found to have a large variation in the database. Most samples were able to be classified into the vehicles' country of origin using a multiclass classifier. However, this was not possible for all samples, due to the origin of glass differing from the origin of the vehicle in some cases. The elemental composition of Australian and Northern Hemisphere samples differed greatly making them easy to separate; however, there was little variation within the Australian samples, making it hard to discriminate between different samples. A three step method, which combined the use of elemental composition, △RI and RI, was used to discriminate database samples. The method distinguished 84% (172/204) of samples in the database. When Australian samples were removed from the analysis, the discrimination increased to 95% (148/156). The type II errors were reduced by using both elemental composition and RI measurement.

year: 2012

title: Indigenous psychology in Aotearoa/New Zealand and Australia

authors: Waitoki, Waikaremoana

subjects: Psychology

abstract: In Aotearoa/New Zealand and Australia, the development of Indigenous psychology is a response to the resilience of a colonised people, where the gaze of Western imperialism is ever present. The use of esoteric, ceremonial, environmental, and relational knowledge is included to counter balance the individualism inherent in mainstream psychology. Across both countries, connections to ancestors, land, language, customs and relationships are important. Dudgeon’s Social and Emotional Wellbeing model offers a transformative lens for addressing the significant disparities that Aboriginal and Torres Strait Islander peoples’ experience. While Māori wellbeing includes healthy relationships between physical, psychological, community, spirituality and environment domains. The chapter promotes a reclamation of Indigenous knowledge systems that, if not protected and promoted, could be lost from their cultural home.

text: Indigenous psychology in Aotearoa/New Zealand and Australia In Aotearoa/New Zealand and Australia, the development of Indigenous psychology is a response to the resilience of a colonised people, where the gaze of Western imperialism is ever present. The use of esoteric, ceremonial, environmental, and relational knowledge is included to counter balance the individualism inherent in mainstream psychology. Across both countries, connections to ancestors, land, language, customs and relationships are important. Dudgeon’s Social and Emotional Wellbeing model offers a transformative lens for addressing the significant disparities that Aboriginal and Torres Strait Islander peoples’ experience. While Māori wellbeing includes healthy relationships between physical, psychological, community, spirituality and environment domains. The chapter promotes a reclamation of Indigenous knowledge systems that, if not protected and promoted, could be lost from their cultural home.

year: 2018