title: Speeding up and boosting diverse density learning

authors: Foulds, James Richard

subjects: computer science

abstract: In multi-instance learning, each example is described by a bag of instances instead of a single feature vector. In this paper, we revisit the idea of performing multi-instance classification based on a point-and-scaling concept by searching for the point in instance space with the highest diverse density. This is a computationally expensive process, and we describe several heuristics designed to improve runtime. Our results show that simple variants of existing algorithms can be used to find diverse density maxima more efficiently. We also show how significant increases in accuracy can be obtained by applying a boosting algorithm with a modified version of the diverse density algorithm as the weak learner.

text: Speeding up and boosting diverse density learning In multi-instance learning, each example is described by a bag of instances instead of a single feature vector. In this paper, we revisit the idea of performing multi-instance classification based on a point-and-scaling concept by searching for the point in instance space with the highest diverse density. This is a computationally expensive process, and we describe several heuristics designed to improve runtime. Our results show that simple variants of existing algorithms can be used to find diverse density maxima more efficiently. We also show how significant increases in accuracy can be obtained by applying a boosting algorithm with a modified version of the diverse density algorithm as the weak learner.

year: 2010

title: [Review of Raising dust: A cultural history of dance in Palestine by Nicholas Rowe]

authors: Pratt, Douglas

subjects: Arts & Humanities

abstract: This article review the book, “Raising dust: a cultural history of dance in Palestine”, by Paul L. Heck.

text: [Review of Raising dust: A cultural history of dance in Palestine by Nicholas Rowe] This article review the book, “Raising dust: a cultural history of dance in Palestine”, by Paul L. Heck.

year: 2010

title: John William Richard Guilding

authors: Hart, Philip

abstract: Born in Auckland in 1842, by his late teenage years John William Richard Guilding was trading with Maori in the Piako district. Protected by a rangatira, he established a store at Kerepehi, but despite being known to be ‘friendly’ with Maori he was driven off after the start of the Waikato War. In 1864, again with the approval of a rangatira, he erected a store on the site of the future township of Thames. Although he claimed to have found signs of gold there, he was not the prospector who produced the samples that led to the opening of the goldfield. In 1869 he was appointed a licensed interpreter, in which role he assisted both the Crown and private individuals to acquire Maori land. Some of these transactions created controversy, and he was accused of tricking Maori. In 1875 his attempt to use his position as James Mackay’s interpreter to acquire a lease of land at Tairua for his own financial gain provoked much criticism, and his ‘irregular practices’ led to his dismissal as a licensed interpreter in 1883. He would continue to act for individuals as both an interpreter and a land agent in Ohinemuri and Te Aroha in subsequent years.
Guilding’s close links with Maori were in part explained by his private life. Having married a ‘half-caste’ who later left him for another man, he had three more ‘marriages’ and several more children, who were brought up in Pakeha ways. Financially, he always struggled, filing as bankrupt twice and dying in straightened circumstances. At Te Aroha he held several minor official positions, sometimes being criticized for his performance. Active in local politics, he was generally unpopular and was never elected to the positions he sought. Throughout his life his reputation amongst a sizeable number of his contemporaries was poor.

text: John William Richard Guilding Born in Auckland in 1842, by his late teenage years John William Richard Guilding was trading with Maori in the Piako district. Protected by a rangatira, he established a store at Kerepehi, but despite being known to be ‘friendly’ with Maori he was driven off after the start of the Waikato War. In 1864, again with the approval of a rangatira, he erected a store on the site of the future township of Thames. Although he claimed to have found signs of gold there, he was not the prospector who produced the samples that led to the opening of the goldfield. In 1869 he was appointed a licensed interpreter, in which role he assisted both the Crown and private individuals to acquire Maori land. Some of these transactions created controversy, and he was accused of tricking Maori. In 1875 his attempt to use his position as James Mackay’s interpreter to acquire a lease of land at Tairua for his own financial gain provoked much criticism, and his ‘irregular practices’ led to his dismissal as a licensed interpreter in 1883. He would continue to act for individuals as both an interpreter and a land agent in Ohinemuri and Te Aroha in subsequent years.
Guilding’s close links with Maori were in part explained by his private life. Having married a ‘half-caste’ who later left him for another man, he had three more ‘marriages’ and several more children, who were brought up in Pakeha ways. Financially, he always struggled, filing as bankrupt twice and dying in straightened circumstances. At Te Aroha he held several minor official positions, sometimes being criticized for his performance. Active in local politics, he was generally unpopular and was never elected to the positions he sought. Throughout his life his reputation amongst a sizeable number of his contemporaries was poor.

year: 2016