title: Scalable and efficient multi-label classification for evolving data streams

authors: Read, Jesse

subjects: Machine learning

abstract: Many challenging real world problems involve 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 classifiers must be able to deal with huge numbers of examples and to adapt to change using limited time and memory while being ready to predict at any point.
This paper proposes a new experimental framework for learning and evaluating on multi-label data streams, and uses it to study the performance of various methods. From this study, we develop a multi-label Hoeffding tree with multi-label classifiers at the leaves. We show empirically that this method is well suited to this challenging task. Using our new framework, which allows us to generate realistic multi-label data streams with concept drift (as well as real data), we compare with a selection of baseline methods, as well as new learning methods from the literature, and show that our Hoeffding tree method achieves fast and more accurate performance.

text: Scalable and efficient multi-label classification for evolving data streams Many challenging real world problems involve 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 classifiers must be able to deal with huge numbers of examples and to adapt to change using limited time and memory while being ready to predict at any point.
This paper proposes a new experimental framework for learning and evaluating on multi-label data streams, and uses it to study the performance of various methods. From this study, we develop a multi-label Hoeffding tree with multi-label classifiers at the leaves. We show empirically that this method is well suited to this challenging task. Using our new framework, which allows us to generate realistic multi-label data streams with concept drift (as well as real data), we compare with a selection of baseline methods, as well as new learning methods from the literature, and show that our Hoeffding tree method achieves fast and more accurate performance.

year: 2012

title: Pest Fish Control - Fact Sheet

authors: Tempero, Grant Wayne

abstract: Due to their negative impacts on water quality and native biodiversity in New Zealand, regional councils have included a number of introduced freshwater fish species such as koi carp, rudd, brown bullhead catfish, goldfish, tench, gambusia (mosquitofish) and European perch (Figure 1) in their pest management plans. The Department of Conservation and regional councils undertake control and eradication programmes around New Zealand every year in order to contain their spread and reduce their impacts. Nearly all regions of mainland New Zealand have at least one of these species but they are most prevalent in the Auckland and Waikato regions. LERNZ has been researching the population ecology and capture methods of pest fish populations in order to develop efficient methods for their control.

text: Pest Fish Control - Fact Sheet Due to their negative impacts on water quality and native biodiversity in New Zealand, regional councils have included a number of introduced freshwater fish species such as koi carp, rudd, brown bullhead catfish, goldfish, tench, gambusia (mosquitofish) and European perch (Figure 1) in their pest management plans. The Department of Conservation and regional councils undertake control and eradication programmes around New Zealand every year in order to contain their spread and reduce their impacts. Nearly all regions of mainland New Zealand have at least one of these species but they are most prevalent in the Auckland and Waikato regions. LERNZ has been researching the population ecology and capture methods of pest fish populations in order to develop efficient methods for their control.

year: 2015

title: Constructing strategies for sustainable development the communitarian way

authors: Arunachalam, Murugesh

subjects: communities

abstract: Purpose – The paper aims to draw on recommendations of Agenda 21 and communitarian theory to examine collaboration between local district community and local authorities to formulate strategies for the sustainable development of the Taupo district. 
Design/methodology/approach – The paper adopts an interpretative methodology based on philosophical hermeneutic to understand collaboration between local community and local authorities in the Taupo district. Empirical data for this interpretive study comprise public documents, interview transcripts and minutes of meetings attended by the researchers. The paper begins interpretation of empirical data with pre-understanding of communitarian theory and Agenda 21. 
Findings – The findings indicate that historical and political factors and diversity of interests in the community affect processes and outcomes of collaboration. Local authorities play a crucial role in bringing together various groups in the Taupo community which are segregated by diversity of interests, especially between Maori and non-Maori community groups. Without local authority facilitation, the Taupo community may remain segregated; inhibited by lack of information; and not having the opportunity to participate in sustainable development. Community participation in the Taupo district is at an infancy stage and collaboration intended to empower communities may result in local authorities recentralising their positions. 
Originality/value – The paper integrates theory and practice and provides valuable insights for statutory agencies seeking to implement the recommendations of Agenda 21 regarding community participation in sustainable development.

text: Constructing strategies for sustainable development the communitarian way Purpose – The paper aims to draw on recommendations of Agenda 21 and communitarian theory to examine collaboration between local district community and local authorities to formulate strategies for the sustainable development of the Taupo district. 
Design/methodology/approach – The paper adopts an interpretative methodology based on philosophical hermeneutic to understand collaboration between local community and local authorities in the Taupo district. Empirical data for this interpretive study comprise public documents, interview transcripts and minutes of meetings attended by the researchers. The paper begins interpretation of empirical data with pre-understanding of communitarian theory and Agenda 21. 
Findings – The findings indicate that historical and political factors and diversity of interests in the community affect processes and outcomes of collaboration. Local authorities play a crucial role in bringing together various groups in the Taupo community which are segregated by diversity of interests, especially between Maori and non-Maori community groups. Without local authority facilitation, the Taupo community may remain segregated; inhibited by lack of information; and not having the opportunity to participate in sustainable development. Community participation in the Taupo district is at an infancy stage and collaboration intended to empower communities may result in local authorities recentralising their positions. 
Originality/value – The paper integrates theory and practice and provides valuable insights for statutory agencies seeking to implement the recommendations of Agenda 21 regarding community participation in sustainable development.

year: 2010