AVALIACAO DO USO DE HEURISTICAS DE CONTEXTO NA MINERAÇÃO DE DIVIDA TECNICA COM A EXCOMMENT

Context: The eXcomment is a tool built to find technical debt through the mining of source code comments. Problem:After preliminary evaluation of the first version of the tool,the authors added additional heuristics to improve its results,which resulted in a second version of it. So far, no evaluation has been done on the effect of such heuristics onthe technical debt identification. Method: Therefore, this paper evaluates the effect of such heuristics on the miningby the tool with two open-source use cases. Results: Results show fewer false positives, which led to increased accuracy.Contexto: A eXcomment é uma ferramenta que minera comentários em código-fonte para identificar itens de Dívida técnica (DT) de maneira automatizada. Problema: Após estudos preliminares com a primeira versão, os autores introduziram heurísticas no processo de identificação de DT, o que produziu a segunda versão. Até este ponto, não existia um estudo empírico para avaliar como o uso de heurísticas pode afetar na identificação de DT pela ferramenta. Método: Este artigo investiga o efeito destas heurísticas no resultado da mineração de DT através de dois estudos de caso com softwares de código aberto. Resultados: Os resultados mostraram redução na quantidade de falsos positivos, o que levou melhoria à da bem como foi possível perceber ligeira melhora na acurácia da ferramenta

Growing knowledge: an overview of Seed Plant diversity in Brazil

Abstract An updated inventory of Brazilian seed plants is presented and offers important insights into the country's biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, showing an increase of 3% in its species richness in relation to 2010. The Amazon Rainforest is the richest Brazilian biome for Gymnosperms, while the Atlantic Rainforest is the richest one for Angiosperms. There was a considerable increment in the number of species and endemism rates for biomes, except for the Amazon that showed a decrease of 2.5% of recorded endemics. However, well over half of Brazillian seed plant species (57.4%) is endemic to this territory. The proportion of life-forms varies among different biomes: trees are more expressive in the Amazon and Atlantic Rainforest biomes while herbs predominate in the Pampa, and lianas are more expressive in the Amazon, Atlantic Rainforest, and Pantanal. This compilation serves not only to quantify Brazilian biodiversity, but also to highlight areas where there information is lacking and to provide a framework for the challenge faced in conserving Brazil's unique and diverse flora