title: Using weighted nearest neighbor to benefit from unlabeled data

authors: Driessens, Kurt

subjects: computer science

abstract: The development of data-mining applications such as textclassification and molecular profiling has shown the need for machine learning algorithms that can benefit from both labeled and unlabeled data, where often the unlabeled examples greatly outnumber the labeled examples. In this paper we present a two-stage classifier that improves its predictive accuracy by making use of the available unlabeled data. It uses a weighted nearest neighbor classification algorithm using the combined example-sets as a knowledge base. The examples from the unlabeled set are “pre-labeled” by an initial classifier that is build using the limited available training data. By choosing appropriate weights for this pre-labeled data, the nearest neighbor classifier consistently improves on the original classifier.

text: Using weighted nearest neighbor to benefit from unlabeled data The development of data-mining applications such as textclassification and molecular profiling has shown the need for machine learning algorithms that can benefit from both labeled and unlabeled data, where often the unlabeled examples greatly outnumber the labeled examples. In this paper we present a two-stage classifier that improves its predictive accuracy by making use of the available unlabeled data. It uses a weighted nearest neighbor classification algorithm using the combined example-sets as a knowledge base. The examples from the unlabeled set are “pre-labeled” by an initial classifier that is build using the limited available training data. By choosing appropriate weights for this pre-labeled data, the nearest neighbor classifier consistently improves on the original classifier.

year: 2006

title: The effect of in-plane boundary conditions on the post-buckling behaviour of rectangular corrugated paperboard panels

authors: Kueh, Celia Swee Li

subjects: Corrugated paperboard

abstract: The effect of different in-plane boundary conditions on the critical load and post-buckling behaviour of a uniaxially compressed, simply supported corrugated paperboard panel is examined, with the aim of reducing the discrepancy between model and published experimental results. In-plane boundary conditions with uniform load distribution or uniform compression on the loaded edges, free or constant normal in-plane edge movement and shear free edges, are modelled. Analytical single-term Galerkin and finite element approaches are used. The critical loads obtained analytically and numerically, for different boundary conditions agree well with an analytical reference result.

text: The effect of in-plane boundary conditions on the post-buckling behaviour of rectangular corrugated paperboard panels The effect of different in-plane boundary conditions on the critical load and post-buckling behaviour of a uniaxially compressed, simply supported corrugated paperboard panel is examined, with the aim of reducing the discrepancy between model and published experimental results. In-plane boundary conditions with uniform load distribution or uniform compression on the loaded edges, free or constant normal in-plane edge movement and shear free edges, are modelled. Analytical single-term Galerkin and finite element approaches are used. The critical loads obtained analytically and numerically, for different boundary conditions agree well with an analytical reference result.

year: 2012

title: Maori perspectives of the environment: Proposed action strategies

authors: Whangapirita, Laura

subjects: Maori

abstract: The purpose of this report is to develop an action plan that identifies strategies to meet the future information needs of Environment Waikato with respect to Maori information.

text: Maori perspectives of the environment: Proposed action strategies The purpose of this report is to develop an action plan that identifies strategies to meet the future information needs of Environment Waikato with respect to Maori information.

year: 2003-12