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Papers by Ana Paiva Morais

Le Fablier. Revue des Amis de Jean de La Fontaine

Medievalista, Dec 1, 2008

Este artigo tem por objetivo fazer um estudo da viagem de Amaro em busca do paraíso terreal no te... more Este artigo tem por objetivo fazer um estudo da viagem de Amaro em busca do paraíso terreal no texto medieval português, que se supõe datar do século XIV, intitulado Conto de Amaro, incidindo na relação entre a visão e o desejo como motores da demanda por mar. Analisar-se-ão com particular destaque os elementos textuais que contribuem para a construção, mas também a desconstrução, do espaço marítimo, tendo em atenção a espacialização horizontal na literatura religiosa nos textos que se baseiam no tema da navigatio em contraponto com a noção vertical do espaço da salvação no imaginário da Escada Celeste.

A fábula é estudada na sua dupla acepção de efabulação e de designação do género literário da fáb... more A fábula é estudada na sua dupla acepção de efabulação e de designação do género literário da fábula de tradição esópica, com o objectivo de demonstrar linhas persistentes do fenómeno literário deste o período medieval com Gregório Magno e nos Isopetes medievais até aos alvores da época moderna a partir da noção de efabulação proposta por Michel Foucault. Procura-se demonstrar como os processos associados ao recurso ao estilo 'baixo' estavam já activos e se integravam harmoniosamente no processo poético no início do período medieval, tendo sido cedo assimilados à retórica cristã.

In order to understand certain aspects of the hermeneutical interplay which led to the developmen... more In order to understand certain aspects of the hermeneutical interplay which led to the development of a mechanism of reference to truth in vernacular French fables from collections between the 12th and the14th centuries one should not ignore the debate concerning the statute of narrative fiction which can be found in sources from the 12th century. Amongst those collections, the Esope signed by Marie de France is of special interest since it is the first collection of fables known to be produced in the vernacular French, testifying, along with the Lais, of significant aspects of that debate. In this article, I argue that the poetical creation in the Esope is deeply connected with the philosophical and poetical dimensions of the hermeneutics of allegory and the use of image. A reading of fable 37, “Le Lion et le Paysan”, will illustrate this argument.

Distributed learning is an effective way to analyze big data. In distributed regression, a typica... more Distributed learning is an effective way to analyze big data. In distributed regression, a typical approach is to divide the big data into multiple blocks, apply a base regression algorithm on each of them, and then simply average the output functions learnt from these blocks. Since the average process will decrease the variance, not the bias, bias correction is expected to improve the learning performance if the base regression algorithm is a biased one. Regularization kernel network is an effective and widely used method for nonlinear regression analysis. In this paper we will investigate a bias corrected version of regularization kernel network. We derive the error bounds when it is applied to a single data set and when it is applied as a base algorithm in distributed regression. We show that, under certain appropriate conditions, the optimal learning rates can be reached in both situations.

This paper focuses on aspects of medieval literature which draw on image studies. The aim is to r... more This paper focuses on aspects of medieval literature which draw on image studies. The aim is to review some of those aspects starting with the works of historians, such as Jacques Le Goff and Georges Duby, which have inspired medieval studies from the standpoint of what is nowadays known as “historical anthropology”, as well as the system of anthropological structures of the imaginary set up by Gilbert Durand from which a vast and rich criticism of medieval imaginary has developed. The suggestions of Jean-Claude Schmitt opened the way to further works which proved to be as fruitful: taking a strong interest in the “body of images” (“corps des images”), Schmitt has at times turned to art history in search for his materials of study from which he has drawn some of his most suggestive insights on medieval history and culture. The rhetoric turn, specifically, the new interest in “images of thought” springing from Mary Carruthers’ and Jan Ziolkowski’s recent works has led medieval schola...

Polar codes are recursive general concatenated codes. This property motivates a recursive formali... more Polar codes are recursive general concatenated codes. This property motivates a recursive formalization of the known decoding algorithms: Successive Cancellation, Successive Cancellation with Lists and Belief Propagation. Using such description allows an easy development of these algorithms for arbitrary polarizing kernels. Hardware architectures for these decoding algorithms are also described in a recursive way, both for Arikan's standard polar codes and for arbitrary polarizing kernels.

Le Fablier. Revue des Amis de Jean de La Fontaine

Medievalista, Dec 1, 2008

Este artigo tem por objetivo fazer um estudo da viagem de Amaro em busca do paraíso terreal no te... more Este artigo tem por objetivo fazer um estudo da viagem de Amaro em busca do paraíso terreal no texto medieval português, que se supõe datar do século XIV, intitulado Conto de Amaro, incidindo na relação entre a visão e o desejo como motores da demanda por mar. Analisar-se-ão com particular destaque os elementos textuais que contribuem para a construção, mas também a desconstrução, do espaço marítimo, tendo em atenção a espacialização horizontal na literatura religiosa nos textos que se baseiam no tema da navigatio em contraponto com a noção vertical do espaço da salvação no imaginário da Escada Celeste.

A fábula é estudada na sua dupla acepção de efabulação e de designação do género literário da fáb... more A fábula é estudada na sua dupla acepção de efabulação e de designação do género literário da fábula de tradição esópica, com o objectivo de demonstrar linhas persistentes do fenómeno literário deste o período medieval com Gregório Magno e nos Isopetes medievais até aos alvores da época moderna a partir da noção de efabulação proposta por Michel Foucault. Procura-se demonstrar como os processos associados ao recurso ao estilo 'baixo' estavam já activos e se integravam harmoniosamente no processo poético no início do período medieval, tendo sido cedo assimilados à retórica cristã.

In order to understand certain aspects of the hermeneutical interplay which led to the developmen... more In order to understand certain aspects of the hermeneutical interplay which led to the development of a mechanism of reference to truth in vernacular French fables from collections between the 12th and the14th centuries one should not ignore the debate concerning the statute of narrative fiction which can be found in sources from the 12th century. Amongst those collections, the Esope signed by Marie de France is of special interest since it is the first collection of fables known to be produced in the vernacular French, testifying, along with the Lais, of significant aspects of that debate. In this article, I argue that the poetical creation in the Esope is deeply connected with the philosophical and poetical dimensions of the hermeneutics of allegory and the use of image. A reading of fable 37, “Le Lion et le Paysan”, will illustrate this argument.

Distributed learning is an effective way to analyze big data. In distributed regression, a typica... more Distributed learning is an effective way to analyze big data. In distributed regression, a typical approach is to divide the big data into multiple blocks, apply a base regression algorithm on each of them, and then simply average the output functions learnt from these blocks. Since the average process will decrease the variance, not the bias, bias correction is expected to improve the learning performance if the base regression algorithm is a biased one. Regularization kernel network is an effective and widely used method for nonlinear regression analysis. In this paper we will investigate a bias corrected version of regularization kernel network. We derive the error bounds when it is applied to a single data set and when it is applied as a base algorithm in distributed regression. We show that, under certain appropriate conditions, the optimal learning rates can be reached in both situations.

This paper focuses on aspects of medieval literature which draw on image studies. The aim is to r... more This paper focuses on aspects of medieval literature which draw on image studies. The aim is to review some of those aspects starting with the works of historians, such as Jacques Le Goff and Georges Duby, which have inspired medieval studies from the standpoint of what is nowadays known as “historical anthropology”, as well as the system of anthropological structures of the imaginary set up by Gilbert Durand from which a vast and rich criticism of medieval imaginary has developed. The suggestions of Jean-Claude Schmitt opened the way to further works which proved to be as fruitful: taking a strong interest in the “body of images” (“corps des images”), Schmitt has at times turned to art history in search for his materials of study from which he has drawn some of his most suggestive insights on medieval history and culture. The rhetoric turn, specifically, the new interest in “images of thought” springing from Mary Carruthers’ and Jan Ziolkowski’s recent works has led medieval schola...

Polar codes are recursive general concatenated codes. This property motivates a recursive formali... more Polar codes are recursive general concatenated codes. This property motivates a recursive formalization of the known decoding algorithms: Successive Cancellation, Successive Cancellation with Lists and Belief Propagation. Using such description allows an easy development of these algorithms for arbitrary polarizing kernels. Hardware architectures for these decoding algorithms are also described in a recursive way, both for Arikan's standard polar codes and for arbitrary polarizing kernels.

A new and exciting research project funded by the Portuguese agency for science and technology (F... more A new and exciting research project funded by the Portuguese agency for science and technology (FCT), starting next year.

Project FALCO will look closely at the historical human links with raptors / birds of prey. Consisting of the avian families falconidae and accipitridae, raptors include
various species of hawk and falcon. These birds were no strangers to Portuguese (indeed European) medieval culture: human-raptor connections ranged from material partnerships to intellectual representation. The symbolism of raptors was well embedded in the medieval mind, yet as living beings raptors also played a role in a considerable range of human activities.

Through exploration and sustained debate, we aim by the end of the project to have reached a strong methodological foundation for the broad-ranging, cross-disciplinary investigation of medieval human-animal relations, set to work widely across subjects.

Project members:
Alice Tavares
Ana Paiva Morais
Ana Raquel Roque
Carlos Pimenta
Diana Martins
Filipa Soares
Joana Ramôa Melo
Rémy Cordonnier (Co-PI)
Sónia Gomes
Tiago Viúla de Faria (PI)

Project advisers:
Aleks Pluskowsky
Baudouin Van den Abeele
José Manuel Fradejas Rueda

Partner institutions:
Instituto de Estudos Medievais, NOVA FCSH
Câmara Municipal de Salvaterra de Magos
Laboratório de Arqueologia, DGPC

(News link: https://www.facebook.com/InstitutoEstudosMedievais/photos/a.1647751625444789/3077568035796467/ More information soon to follow... )