title: Clustering for Classification

authors: Evans, Reuben James Emmanuel

subjects: Clustering

abstract: Advances in technology have provided industry with an array of devices for collecting data. The frequency and scale of data collection means that
there are now many large datasets being generated. To find patterns in these datasets it would be useful to be able to apply modern methods of
classification such as support vector machines. Unfortunately these methods are computationally expensive, quadratic in the number of data points in fact, so cannot be applied directly.

This thesis proposes a framework whereby a variety of clustering methods can be used to summarise datasets, that is, reduce them to a smaller but
still representative dataset so that these advanced methods can be applied. It compares the results of using this framework against using random selection on a large number of classification and regression problems. Results show that the clustered datasets are on average fifty percent smaller than the original datasets without loss of classification accuracy which is significantly better than random selection. They also show that there is no free lunch, for each dataset it is important to choose a clustering method carefully.

text: Clustering for Classification Advances in technology have provided industry with an array of devices for collecting data. The frequency and scale of data collection means that
there are now many large datasets being generated. To find patterns in these datasets it would be useful to be able to apply modern methods of
classification such as support vector machines. Unfortunately these methods are computationally expensive, quadratic in the number of data points in fact, so cannot be applied directly.

This thesis proposes a framework whereby a variety of clustering methods can be used to summarise datasets, that is, reduce them to a smaller but
still representative dataset so that these advanced methods can be applied. It compares the results of using this framework against using random selection on a large number of classification and regression problems. Results show that the clustered datasets are on average fifty percent smaller than the original datasets without loss of classification accuracy which is significantly better than random selection. They also show that there is no free lunch, for each dataset it is important to choose a clustering method carefully.

year: 2007

title: Recollecting and reflecting on feminist geography in Aotearoa/New Zealand and beyond

authors: Longhurst, Robyn

subjects: feminist geography

abstract: Over the past three decades feminist geography and the concept of gender have been deployed unevenly by geographers in Aotearoa/New Zealand. A politics of knowledge production means that feminist geography occupies both the centre and the margins of academic knowledge. In order to highlight the diversity of feminist geographical knowledges we pay attention to local, regional, national and international contexts. First, we begin by positioning ourselves as working in the geography programme at the University of Waikato. Second, we review the directions taken at other universities in Aotearoa/New Zealand. Third, we examine a number of key international organisations that have been important in supporting geographers and others who share a focus on space and gender. In the fourth and final section we suggest strategies for strengthening feminist geography in the future.

text: Recollecting and reflecting on feminist geography in Aotearoa/New Zealand and beyond Over the past three decades feminist geography and the concept of gender have been deployed unevenly by geographers in Aotearoa/New Zealand. A politics of knowledge production means that feminist geography occupies both the centre and the margins of academic knowledge. In order to highlight the diversity of feminist geographical knowledges we pay attention to local, regional, national and international contexts. First, we begin by positioning ourselves as working in the geography programme at the University of Waikato. Second, we review the directions taken at other universities in Aotearoa/New Zealand. Third, we examine a number of key international organisations that have been important in supporting geographers and others who share a focus on space and gender. In the fourth and final section we suggest strategies for strengthening feminist geography in the future.

year: 2015

title: Lavinia and Henry Dunbar Johnson

authors: Hart, Philip

abstract: Rawinia Manukau, of Ngati Tamatera, married Henry Dunbar Johnson in 1868, when aged 21. Johnson had been a storekeeper at Coromandel from 1863 onwards and after 1866 had the first store at the site of the future Paeroa. In both places, but particularly in the latter, there was always the fear of conflict with the local Maori population, despite his being protected by a rangatira. After spending time at the new Thames goldfield, from 1871 onwards he was a partner in another Paeroa store, being able to erect a house because a rangatira related to his wife wished her to settle there. Lavinia (as she was known to Pakeha) obtained interests in several blocks of land in Ohinemuri, and her husband also acquired some land for a farm. He prospected Karangahake mountain from 1866 onwards, despite Maori opposition, and in 1875 and the following year actively mined there, unprofitably; Lavinia was not involved with this field, but did acquire interests in two claims when the Te Aroha one opened.
A petty squabble with a Thames neighbour resulted in Lavinia telling the latter to go back to England – she was feisty in defending her heritage. Through his marriage and close contact with Maori, Johnson understood and admired the Maori language, leading to his being appointed a licensed interpreter in 1872. After being a leading pioneer of Paeroa, in 1879 he went to Wellington to work in the Native Office, leaving his wife and family behind for a while; after then she was employed by Pakeha as a nurse and midwife. 
In 1885 Johnson was appointed to oversee the development of Rotorua, where he attempted to have Maori children educated (as his own were) and had to cope with the aftermath of the 1886 Tarawera eruption. Retrenched in 1888, he farmed for a while on his wife’s land at Te Aroha West, becoming involved in local issues and local politics. During the 1890 he obtained more official positions, and from 1896 to 1906 was a land court judge.
The Johnson family was well integrated into the dominant culture, all his daughters marrying Pakeha apart from one who married a ‘half-caste’ who had been brought up as a Pakeha. Johnson was not a Pakeha Maori in the original sense, but was accepted by Maori when living in Paeroa and as a judge tried to be kind to poverty-stricken Maori, although in time he viewed Maori as becoming lazy compared with those he had lived amongst during his first two decades in New Zealand.

text: Lavinia and Henry Dunbar Johnson Rawinia Manukau, of Ngati Tamatera, married Henry Dunbar Johnson in 1868, when aged 21. Johnson had been a storekeeper at Coromandel from 1863 onwards and after 1866 had the first store at the site of the future Paeroa. In both places, but particularly in the latter, there was always the fear of conflict with the local Maori population, despite his being protected by a rangatira. After spending time at the new Thames goldfield, from 1871 onwards he was a partner in another Paeroa store, being able to erect a house because a rangatira related to his wife wished her to settle there. Lavinia (as she was known to Pakeha) obtained interests in several blocks of land in Ohinemuri, and her husband also acquired some land for a farm. He prospected Karangahake mountain from 1866 onwards, despite Maori opposition, and in 1875 and the following year actively mined there, unprofitably; Lavinia was not involved with this field, but did acquire interests in two claims when the Te Aroha one opened.
A petty squabble with a Thames neighbour resulted in Lavinia telling the latter to go back to England – she was feisty in defending her heritage. Through his marriage and close contact with Maori, Johnson understood and admired the Maori language, leading to his being appointed a licensed interpreter in 1872. After being a leading pioneer of Paeroa, in 1879 he went to Wellington to work in the Native Office, leaving his wife and family behind for a while; after then she was employed by Pakeha as a nurse and midwife. 
In 1885 Johnson was appointed to oversee the development of Rotorua, where he attempted to have Maori children educated (as his own were) and had to cope with the aftermath of the 1886 Tarawera eruption. Retrenched in 1888, he farmed for a while on his wife’s land at Te Aroha West, becoming involved in local issues and local politics. During the 1890 he obtained more official positions, and from 1896 to 1906 was a land court judge.
The Johnson family was well integrated into the dominant culture, all his daughters marrying Pakeha apart from one who married a ‘half-caste’ who had been brought up as a Pakeha. Johnson was not a Pakeha Maori in the original sense, but was accepted by Maori when living in Paeroa and as a judge tried to be kind to poverty-stricken Maori, although in time he viewed Maori as becoming lazy compared with those he had lived amongst during his first two decades in New Zealand.

year: 2016