title: Dimension-adaptive bounds on compressive FLD Classification

authors: Kabán, Ata

subjects: compressed learning

abstract: Efficient dimensionality reduction by random projections (RP) gains popularity, hence the learning guarantees achievable in RP spaces are of great interest. In finite dimensional setting, it has been shown for the compressive Fisher Linear Discriminant (FLD) classifier that forgood generalisation the required target dimension grows only as the log of the number of classes and is not adversely affected by the number of projected data points. However these bounds depend on the dimensionality d of the original data space. In this paper we give further guarantees that remove d from the bounds under certain conditions of regularity on the data density structure. In particular, if the data density does not fill the ambient space then the error of compressive FLD is independent of the ambient dimension and depends only on a notion of ‘intrinsic dimension'.

text: Dimension-adaptive bounds on compressive FLD Classification Efficient dimensionality reduction by random projections (RP) gains popularity, hence the learning guarantees achievable in RP spaces are of great interest. In finite dimensional setting, it has been shown for the compressive Fisher Linear Discriminant (FLD) classifier that forgood generalisation the required target dimension grows only as the log of the number of classes and is not adversely affected by the number of projected data points. However these bounds depend on the dimensionality d of the original data space. In this paper we give further guarantees that remove d from the bounds under certain conditions of regularity on the data density structure. In particular, if the data density does not fill the ambient space then the error of compressive FLD is independent of the ambient dimension and depends only on a notion of ‘intrinsic dimension'.

year: 2013

title: Travel and  commuting before and after COVID-19

authors: Thomas, Francene Maree Feraband

subjects: Pandemic

abstract: Major life events such as COVID-19 have the potential to change how people think about their transport choices. The COVID-19 pandemic has posed a threat to health and created an extended period of disruption in people’s lives which could result in long-term changes towards travel attitudes and use of transport services. Research on changes towards travel attitudes and use of domestic travel modes as a result of previous pandemics was very limited with most studies focused on international travel. This study aimed to investigate how COVID-19 has influenced attitudes towards travel and intention to use transport modes in New Zealand and Australia. A survey was created and completed by 787 respondents (New Zealand n = 506, Australia n = 281). The results showed attitudes towards travel were negatively affected, particularly towards air travel and public transport and showed decreases in intentions to use these modes of transport. These changes in attitudes and intentions were more prominent in the Australian sample which reported less positive attitudes and larger decreases in intentions to use domestic transport modes. Further, international air travel attitudes and intentions were similar between the New Zealand and Australian sample. Age, gender, and perceived risk scores were also examined, with some significant but small effects. This information is useful to understand how the demand for transport services might change, particularly as New Zealand and Australia are ahead of many other countries in the pandemic cycle.

text: Travel and  commuting before and after COVID-19 Major life events such as COVID-19 have the potential to change how people think about their transport choices. The COVID-19 pandemic has posed a threat to health and created an extended period of disruption in people’s lives which could result in long-term changes towards travel attitudes and use of transport services. Research on changes towards travel attitudes and use of domestic travel modes as a result of previous pandemics was very limited with most studies focused on international travel. This study aimed to investigate how COVID-19 has influenced attitudes towards travel and intention to use transport modes in New Zealand and Australia. A survey was created and completed by 787 respondents (New Zealand n = 506, Australia n = 281). The results showed attitudes towards travel were negatively affected, particularly towards air travel and public transport and showed decreases in intentions to use these modes of transport. These changes in attitudes and intentions were more prominent in the Australian sample which reported less positive attitudes and larger decreases in intentions to use domestic transport modes. Further, international air travel attitudes and intentions were similar between the New Zealand and Australian sample. Age, gender, and perceived risk scores were also examined, with some significant but small effects. This information is useful to understand how the demand for transport services might change, particularly as New Zealand and Australia are ahead of many other countries in the pandemic cycle.

year: 2021

title: The Oral Transmission of Mātauranga Māori in regard to Traditional Hokianga Stories and the Revitalization of Significant Place Names.

authors: Barnes, Maria

subjects: Hokianga

abstract: This thesis researched the oral transmission of mātauranga Māori from one generation to another with a particular focus on the significance of place names in the Hokianga area from Waimamaku through to Opononi. It also sought to understand the stories and history that accompany this area. Our oral traditions are critical in helping to define our identity as Māori, and our relationship with the land.

This thesis begins by looking at the ways in which we as Māori are connected to the land and some of our traditional values regarding cultural practices and the way our tūpuna lived.  It also shares an example of the way in which our oral traditions and histories were preserved and taught.  There is then a detailed section regarding the significance of Hokianga place names within the Waimamaku, Omapere and Opononi area of Hokianga.  This information has been provided orally from the generosity of kaumātua of our area.  Following this I have concluded by providing an overall statement about the significance of findings and outcomes of my research.

This kaupapa is important as more and more of these place names and their histories will continue to be lost if records are not kept and shared with future generations.  I also understand the importance of protecting this knowledge.  Through colonisation and over time the use of our traditional educational practices and our place names and their histories have been forgotten, watered down, and sometimes lost.  Our learning methods, histories and whakapapa constitute important elements of who we are as Māori. They recognise the past, help us to understand today and guide us into the future. 

The research strategy used in my thesis is collaborative storying co-constructed between myself the researcher and local kaumātua deemed to hold traditional knowledge of our area.  This has provided the opportunity to find out significant place names and our local histories. Prior to working on this thesis only a few names were known and understood.  However in the end we are able to get a more detailed picture of our history.  There are still plenty more place names to be found and understood.


We live and come from a beautiful place.

text: The Oral Transmission of Mātauranga Māori in regard to Traditional Hokianga Stories and the Revitalization of Significant Place Names. This thesis researched the oral transmission of mātauranga Māori from one generation to another with a particular focus on the significance of place names in the Hokianga area from Waimamaku through to Opononi. It also sought to understand the stories and history that accompany this area. Our oral traditions are critical in helping to define our identity as Māori, and our relationship with the land.

This thesis begins by looking at the ways in which we as Māori are connected to the land and some of our traditional values regarding cultural practices and the way our tūpuna lived.  It also shares an example of the way in which our oral traditions and histories were preserved and taught.  There is then a detailed section regarding the significance of Hokianga place names within the Waimamaku, Omapere and Opononi area of Hokianga.  This information has been provided orally from the generosity of kaumātua of our area.  Following this I have concluded by providing an overall statement about the significance of findings and outcomes of my research.

This kaupapa is important as more and more of these place names and their histories will continue to be lost if records are not kept and shared with future generations.  I also understand the importance of protecting this knowledge.  Through colonisation and over time the use of our traditional educational practices and our place names and their histories have been forgotten, watered down, and sometimes lost.  Our learning methods, histories and whakapapa constitute important elements of who we are as Māori. They recognise the past, help us to understand today and guide us into the future. 

The research strategy used in my thesis is collaborative storying co-constructed between myself the researcher and local kaumātua deemed to hold traditional knowledge of our area.  This has provided the opportunity to find out significant place names and our local histories. Prior to working on this thesis only a few names were known and understood.  However in the end we are able to get a more detailed picture of our history.  There are still plenty more place names to be found and understood.


We live and come from a beautiful place.

year: 2010