Genetic Programming involves the evolution of computer programs, which are usually represented by... more Genetic Programming involves the evolution of computer programs, which are usually represented by trees composed by functions and terminals. In order to assign fitness, one must evaluate the programs, which is the most time demanding step of GP. In nowadays standard approaches, the evaluation involves an interpretation step. To avoid this step, which significantly slows the algorithm, some researchers evolve, directly, machine code programs. An alternative approach is to build a Genome Compiler, i.e. a system that transforms the individual's trees in machine-code programs and executes this code. Both techniques can bring huge speed improvements. However, these approaches have some shortcomings. In this paper we present GenCo: a research project whose main goal is development of a Genetic Programming Genome Compiler system, that overcomes some of the drawbacks of current approaches, enabling high speed improvements in a wider range of domains. We will also present experimental results in a programmatic compression task, in which GenCo was, on average, 80 times faster than a standard C based GP system.
This paper is about the colouring of greyscale images. More specifically, we address the problem ... more This paper is about the colouring of greyscale images. More specifically, we address the problem of learning to colour greyscale images from a set of examples of true colour ones. We employ Genetic Programming to evolve computer programs that take as input the Lightness ...
Intestinal duplications are rare congenital lesions that can develop anywhere along the alimentar... more Intestinal duplications are rare congenital lesions that can develop anywhere along the alimentary tract. Symptoms usually appear during the first year of life and are varied. Diagnosis is difficult to achieve, and surgery is required for treatment. Here the case of a 6-month-old male with history of recurrent intussusception is reported. Surgery was indicated, and an ileal duplication was found. Intestinal duplication is discussed based on its epidemiology, clinical presentation, diagnosis, and treatment. (J Surg 64:51-53.
A evocação, no Peru, da autoridade de cronistas e de historiadores coevos legitimou a apropriação... more A evocação, no Peru, da autoridade de cronistas e de historiadores coevos legitimou a apropriação idiossincrática de determinados temas em detrimento de outros; ao mesmo tempo, disputas políticas, econômicas e intelectuais orientaram a distinção entre as explicações unificadoras canônicas e aquelas abandonáveis. Mas o mesmo gesto que procurou delimitar uma memória comum peruana alimentou-se da ambiguidade das tradições disponíveis. Na base desse processo encontravam-se as intricadas redes pelas quais temas oriundos de contextos diversos transitaram, especificando-se à luz das problemáticas locais. Dadas essas questões, as formas através das quais a Antiguidade Clássica fora evocada no contexto colonial peruano constituem o objeto central da obra de Sabine G. MacCormack, On the wings of time. Rome, the Incas, Spain, and Peru (2006).
Genetic Programming involves the evolution of computer programs, which are usually represented by... more Genetic Programming involves the evolution of computer programs, which are usually represented by trees composed by functions and terminals. In order to assign fitness, one must evaluate the programs, which is the most time demanding step of GP. In nowadays standard approaches, the evaluation involves an interpretation step. To avoid this step, which significantly slows the algorithm, some researchers evolve, directly, machine code programs. An alternative approach is to build a Genome Compiler, i.e. a system that transforms the individual's trees in machine-code programs and executes this code. Both techniques can bring huge speed improvements. However, these approaches have some shortcomings. In this paper we present GenCo: a research project whose main goal is development of a Genetic Programming Genome Compiler system, that overcomes some of the drawbacks of current approaches, enabling high speed improvements in a wider range of domains. We will also present experimental results in a programmatic compression task, in which GenCo was, on average, 80 times faster than a standard C based GP system.
This paper is about the colouring of greyscale images. More specifically, we address the problem ... more This paper is about the colouring of greyscale images. More specifically, we address the problem of learning to colour greyscale images from a set of examples of true colour ones. We employ Genetic Programming to evolve computer programs that take as input the Lightness ...
Intestinal duplications are rare congenital lesions that can develop anywhere along the alimentar... more Intestinal duplications are rare congenital lesions that can develop anywhere along the alimentary tract. Symptoms usually appear during the first year of life and are varied. Diagnosis is difficult to achieve, and surgery is required for treatment. Here the case of a 6-month-old male with history of recurrent intussusception is reported. Surgery was indicated, and an ileal duplication was found. Intestinal duplication is discussed based on its epidemiology, clinical presentation, diagnosis, and treatment. (J Surg 64:51-53.
A evocação, no Peru, da autoridade de cronistas e de historiadores coevos legitimou a apropriação... more A evocação, no Peru, da autoridade de cronistas e de historiadores coevos legitimou a apropriação idiossincrática de determinados temas em detrimento de outros; ao mesmo tempo, disputas políticas, econômicas e intelectuais orientaram a distinção entre as explicações unificadoras canônicas e aquelas abandonáveis. Mas o mesmo gesto que procurou delimitar uma memória comum peruana alimentou-se da ambiguidade das tradições disponíveis. Na base desse processo encontravam-se as intricadas redes pelas quais temas oriundos de contextos diversos transitaram, especificando-se à luz das problemáticas locais. Dadas essas questões, as formas através das quais a Antiguidade Clássica fora evocada no contexto colonial peruano constituem o objeto central da obra de Sabine G. MacCormack, On the wings of time. Rome, the Incas, Spain, and Peru (2006).
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