title: Generating accurate rule sets without global optimization

authors: Frank, Eibe

subjects: computer science

abstract: The two dominant schemes for rule-learning, C4.5 and RIPPER, both operate in two stages. First they induce an initial rule set and then they refine it using a rather complex optimization stage that discards (C4.5) or adjusts (RIPPER) individual rules to make them work better together. In contrast, this paper shows how good rule sets can be learned one rule at a time, without any need for global optimization. We present an algorithm for inferring rules by repeatedly generating partial decision trees, thus combining the two major paradigms for rule generation-creating rules from decision trees and the separate-and-conquer rule-learning technique. The algorithm is straightforward and elegant: despite this, experiments on standard datasets show that it produces rule sets that are as accurate as and of similar size to those generated by C4.5, and more accurate than RIPPER’s. Moreover, it operates efficiently, and because it avoids postprocessing, does not suffer the extremely slow performance on pathological example sets for which the C4.5 method has been criticized.

text: Generating accurate rule sets without global optimization The two dominant schemes for rule-learning, C4.5 and RIPPER, both operate in two stages. First they induce an initial rule set and then they refine it using a rather complex optimization stage that discards (C4.5) or adjusts (RIPPER) individual rules to make them work better together. In contrast, this paper shows how good rule sets can be learned one rule at a time, without any need for global optimization. We present an algorithm for inferring rules by repeatedly generating partial decision trees, thus combining the two major paradigms for rule generation-creating rules from decision trees and the separate-and-conquer rule-learning technique. The algorithm is straightforward and elegant: despite this, experiments on standard datasets show that it produces rule sets that are as accurate as and of similar size to those generated by C4.5, and more accurate than RIPPER’s. Moreover, it operates efficiently, and because it avoids postprocessing, does not suffer the extremely slow performance on pathological example sets for which the C4.5 method has been criticized.

year: 1998-01

title: Considering 'The Professional' in communication studies: Implications for theory and research within and beyond the boundaries of organizational communication

authors: Cheney, George

subjects: professionalism

abstract: This essay positions contemporary "professionalism" as a contested term and a nexus of important theoretical and practical concerns for communication scholars, including, for example, those engaged in the empirical, interpretive, and critical examinations of culture and the self. We advance communication-based understandings of the meanings and practices of professionalism as a complement to the predominantly sociological conceptions of the rise and place of the professional in modern industrialized societies. We are deliberately playful with the term professionalism in demonstrating the power of its ambiguity for reflecting, shaping, and indexing particular kinds of social relations and expectations for them. Part of our argument concerns the complex interplay of symbolism and materiality in the domains of interaction and artifacts surrounding "the professional," and especially its embodiment in work and other settings. This brings us directly to an examination of the "intersectionality" of aspects of difference in the world of the professional (and by implication, the nonprofessional), including race, gender, and class, and to observe a broad-based cultural dialectic of the civilized and the primitive. Finally, we briefly consider extensions as relevant to domains of communication studies beyond the accustomed domain of organizational communication.

text: Considering 'The Professional' in communication studies: Implications for theory and research within and beyond the boundaries of organizational communication This essay positions contemporary "professionalism" as a contested term and a nexus of important theoretical and practical concerns for communication scholars, including, for example, those engaged in the empirical, interpretive, and critical examinations of culture and the self. We advance communication-based understandings of the meanings and practices of professionalism as a complement to the predominantly sociological conceptions of the rise and place of the professional in modern industrialized societies. We are deliberately playful with the term professionalism in demonstrating the power of its ambiguity for reflecting, shaping, and indexing particular kinds of social relations and expectations for them. Part of our argument concerns the complex interplay of symbolism and materiality in the domains of interaction and artifacts surrounding "the professional," and especially its embodiment in work and other settings. This brings us directly to an examination of the "intersectionality" of aspects of difference in the world of the professional (and by implication, the nonprofessional), including race, gender, and class, and to observe a broad-based cultural dialectic of the civilized and the primitive. Finally, we briefly consider extensions as relevant to domains of communication studies beyond the accustomed domain of organizational communication.

year: 2007

title: Ani Jane Lipsey and Alexander Watson Edwards

authors: Hart, Philip

abstract: Ani Lipsey, the eldest daughter of George and Ema, was well educated. Her Scottish husband, who settled in Te Aroha in the 1880s, had been apprenticed as a draper, an occupation he followed in both Australia and then New Zealand. In addition, for a couple of decades he owned dairy farms in the Te Aroha district. He was a successful merchant with a steadily expanding and profitable business. 
Ani received a good income for a while from goldfields revenue, and put the land she inherited to profitable use. In the early twentieth century she convinced officials that she should be permitted to sell land within the township because the proceeds went to assist her husband’s business and because, over time, the government had decided to acquire all the Maori interests in Te Aroha. To assist in selling her land, in 1911 she had it declared European land, she herself being regarded as ‘practically a European’.
Both were active in the social life of the township, Ani being a competent pianist, and participated in sporting activities. Both owned racehorses, and Edwards assisted in organizing many race meetings. As part of his efforts to assist the community, for a while he was a member of the borough council. Both were popular, and were fondly remembered.

text: Ani Jane Lipsey and Alexander Watson Edwards Ani Lipsey, the eldest daughter of George and Ema, was well educated. Her Scottish husband, who settled in Te Aroha in the 1880s, had been apprenticed as a draper, an occupation he followed in both Australia and then New Zealand. In addition, for a couple of decades he owned dairy farms in the Te Aroha district. He was a successful merchant with a steadily expanding and profitable business. 
Ani received a good income for a while from goldfields revenue, and put the land she inherited to profitable use. In the early twentieth century she convinced officials that she should be permitted to sell land within the township because the proceeds went to assist her husband’s business and because, over time, the government had decided to acquire all the Maori interests in Te Aroha. To assist in selling her land, in 1911 she had it declared European land, she herself being regarded as ‘practically a European’.
Both were active in the social life of the township, Ani being a competent pianist, and participated in sporting activities. Both owned racehorses, and Edwards assisted in organizing many race meetings. As part of his efforts to assist the community, for a while he was a member of the borough council. Both were popular, and were fondly remembered.

year: 2016