Encontrados 10 documentos, a visualizar página 1 de 1
Tra-la-lyrics: an approach to generate text based on rhythm
Gonçalo Oliveira, Hugo R.; Cardoso, F. Amílcar; Pereira, Francisco C.This paper is about an ongoing project, Tra-la-Lyrics which aims to create a computer program capable of gen- erating lyrics for given melodies. As a preliminary phase, the correlations between words and rhythm in a song’s lyrics was studied and some heuristics were achieved. Al- gorithms for syllabic division and syllabic stress identifi- cation on a word were implemented. A method for cal- culating the streng...
Experiments with free concept generation in Divago
Pereira, Francisco C.; Cardoso, AmílcarThis paper presents a set of experiments we carried out with, Divago, a system that is an attempt to implement our ideas towards a computational model of creativity. It is expected to be able to generate novel concepts out of previous knowledge. Here we show its behaviour with a large dataset constructed independently by other researchers consisting of over 170 nouns (for a project named C3). Each noun is repre...
The importance of retrieval in creative design analogies
Gomes, Paulo; Seco, Nuno; Pereira, Francisco C.; Paiva, Paulo; Carreiro, Paulo; Ferreira, José L.; Bento, CarlosAnalogy is an important reasoning process in creative design. It enables the generation of new design artifacts using ideas from semantically distant domains. Candidate selection is a crucial process in the generation of creative analogies. Without a good set of candidate sources, the success of subsequent phases can be compromised. Two main types of selection have been identified: semantics-based retrieval and...
Voltammetric characteristics of miconazole and its cathodic stripping voltammet...
PEREIRA,FRANCISCO C.; STRADIOTTO,NELSON R.; ZANONI,MARIA VALNICE B.Miconazole is reduced at mercury electrode above pH 6 involving organometallic compound formation, responsible for an anomalous polarographic behavior. The electrodic process presents a large contribution of the adsorption effects. The drug can be determined by cathodic stripping voltammetry from 8.0 x 10-8 to 1, 5 x 10-6 molL-1 in Britton-Robinson buffer pH 8.0, when pre-accumulated for 30s at an accumulation ...
Electrochemical reduction and cathodic stripping voltammetric determination of ...
Pereira,Francisco C.; Stradiotto,Nelson R.; Zanoni,Maria Valnice B.The reduction of clotrimazole at a mercury electrode, in phosphate buffer, pH>6, involves a reversible one-electron process. The electrochemical process presents a large contribution from adsorption effects. For the differential pulse polarographic determination the addition of Triton X-100 is recommended. Clotrimazole can be determined by cathodic stripping voltammetry at 50 ng mL-1 level when pre-accumulated ...
Composing music with case-based reasoning
Pereira, Francisco C.; Grilo, Carlos Fernando Almeida; Macedo, Luís; Cardoso, Fernando Amílcar BandeiraComunicação apresentada na International Conference on Computational Models of Creative Cognition, Dublin, 1997. ; Music is one of the most intriguing and joyful domain of research and analysis. Driven by this insatiable curiosity, Musical Analysis has emerged to formally understand and structure music and its intrinsic intention and causality. Each complete analysis of a piece points to issues that go far bey...
A structured framework for representing time in a generative composition system
Pereira, Francisco C.; Grilo, Carlos Fernando Almeida; Macedo, Luís; Cardoso, Fernando Amílcar BandeiraThe representation of music structures is, from Musicology to Artificial Intelligence, a widely known research focus. It entails several generic Knowledge Representation problems like structured knowledge representation, time representation and causality. In this paper, we focus the problem of representing and reasoning about time in the framework of a structured music representation approach, intended to suppo...
Plans as structured networks of hierarchically and temporally related case pieces
Macedo, Luís; Pereira, Francisco C.; Grilo, Carlos Fernando Almeida; Cardoso, Fernando Amílcar BandeiraThis paper describes a representation of plan cases as a structured set of goals and actions. These goals and actions are the unit pieces that form a case. These case pieces are related each other by hierarchical and temporal links (explanations) forming a tree-like network. We give importance not just to explicit links, i.e., links between case pieces which are concretely known, but also to implicit ones, i.e....
Towards a computational case-based model for creative planning
Macedo, Luís; Pereira, Francisco C.; Grilo, Carlos Fernando Almeida; Cardoso, Fernando Amílcar BandeiraThis paper describes a computational case-based model for the creative planning process. Our approach is inspired in Wallas’ model for the creative process in that we consider that creativity involves a sequence of four stages: preparation, incubation, illumination and verification. Preparation includes problem acquisition and assimilation of background knowledge, which is represented by cases, i.e., documented...
Experimental study of a similarity metric for retrieving pieces from structured...
Macedo, Luís; Pereira, Francisco C.; Grilo, Carlos Fernando Almeida; Cardoso, Fernando Amílcar BandeiraThis paper describes a quantitative similarity metric and its contribution to achieve original plan solutions. This similarity metric is used by an iterative process of piece retrieval from structured plan cases. Within our approach plan cases are tree-like networks of pieces (goals and actions). These case pieces are ill-related each other by links (explanations). These links may be classified as hierarchical ...
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