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Publicações

Publicações por João Alexandre Saraiva

2022

Energy Efficiency of Python Machine Learning Frameworks

Autores
Ajel, S; Ribeiro, F; Ejbali, R; Saraiva, J;

Publicação
Intelligent Systems Design and Applications - 22nd International Conference on Intelligent Systems Design and Applications (ISDA 2022) Held December 12-14, 2022 - Volume 2

Abstract

2023

Exploring Data Analysis and Visualization Techniques for Project Tracking: Insights from the ITC

Autores
Barrocas, AN; da Silva, AR; Saraiva, J;

Publicação
Quality of Information and Communications Technology - 16th International Conference, QUATIC 2023, Aveiro, Portugal, September 11-13, 2023, Proceedings

Abstract
Data analysis has emerged as a cornerstone in facilitating informed decision-making across myriad fields, in particular in software development and project management. This integrative practice proves instrumental in enhancing operational efficiency, cutting expenditures, mitigating potential risks, and delivering superior results, all while sustaining structured organization and robust control. This paper presents ITC, a synergistic platform architected to streamline multi-organizational and multi-workspace collaboration for project management and technical documentation. ITC serves as a powerful tool, equipping users with the capability to swiftly establish and manage workspaces and documentation, thereby fostering the derivation of invaluable insights pivotal to both technical and business-oriented decisions. ITC boasts a plethora of features, from support for a diverse range of technologies and languages, synchronization of data, and customizable templates to reusable libraries and task automation, including data extraction, validation, and document automation. This paper also delves into the predictive analytics aspect of the ITC platform. It demonstrates how ITC harnesses predictive data models, such as Random Forest Regression, to anticipate project outcomes and risks, enhancing decision-making in project management. This feature plays a critical role in the strategic allocation of resources, optimizing project timelines, and promoting overall project success. In an effort to substantiate the efficacy and usability of ITC, we have also incorporated the results and feedback garnered from a comprehensive user assessment conducted in 2022. The feedback suggests promising potential for the platform’s application, setting the stage for further development and refinement. The insights provided in this paper not only underline the successful implementation of the ITC platform but also shed light on the transformative impact of predictive analytics in information systems. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

2019

Paint Your Programs Green: On the Energy Efficiency of Data Structures

Autores
Pereira, R; Couto, M; Cunha, J; Melfe, G; Saraiva, J; Fernandes, JP;

Publicação
Composability, Comprehensibility and Correctness of Working Software - 8th Summer School, CEFP 2019, Budapest, Hungary, June 17-21, 2019, Revised Selected Papers

Abstract

2023

GPT-3-Powered Type Error Debugging: Investigating the Use of Large Language Models for Code Repair

Autores
Ribeiro, F; de Macedo, JNC; Tsushima, K; Abreu, R; Saraiva, J;

Publicação
PROCEEDINGS OF THE 16TH ACM SIGPLAN INTERNATIONAL CONFERENCE ON SOFTWARE LANGUAGE ENGINEERING, SLE 2023

Abstract
Type systems are responsible for assigning types to terms in programs. That way, they enforce the actions that can be taken and can, consequently, detect type errors during compilation. However, while they are able to flag the existence of an error, they often fail to pinpoint its cause or provide a helpful error message. Thus, without adequate support, debugging this kind of errors can take a considerable amount of effort. Recently, neural network models have been developed that are able to understand programming languages and perform several downstream tasks. We argue that type error debugging can be enhanced by taking advantage of this deeper understanding of the language's structure. In this paper, we present a technique that leverages GPT-3's capabilities to automatically fix type errors in OCaml programs. We perform multiple source code analysis tasks to produce useful prompts that are then provided to GPT-3 to generate potential patches. Our publicly available tool, Mentat, supports multiple modes and was validated on an existing public dataset with thousands of OCaml programs. We automatically validate successful repairs by using Quickcheck to verify which generated patches produce the same output as the user-intended fixed version, achieving a 39% repair rate. In a comparative study, Mentat outperformed two other techniques in automatically fixing ill-typed OCaml programs.

2023

Energy Efficient Software in an Engineering Course

Autores
Saraiva, J; Pereira, R;

Publicação
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Abstract
Sustainable development has become an increasingly important theme not only in the world politics, but also an increasingly central theme for the engineering professions around the world. Software engineers are no exception as shown in various recent research studies. Despite the intensive research on green software, today’s undergraduate computing education often fails to address our environmental responsibility. In this paper, we present a module on energy efficient software that we introduced as part of an advanced course on software analysis and testing. In this module students study techniques and tools to analyze and optimize energy consumption of software systems. Preliminary results of the first four instances of this course show that students are able to optimize the energy consumption of software systems. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

2023

Proceedings of the 16th ACM SIGPLAN International Conference on Software Language Engineering, SLE 2023, Cascais, Portugal, October 23-24, 2023

Autores
Saraiva, J; Degueule, T; Scott, E;

Publicação
SLE

Abstract

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