Patents by Inventor André Miguel Ferreira da Cruz

André Miguel Ferreira da Cruz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11734612
    Abstract: In various embodiments, a process for obtaining a generated dataset with a predetermined bias for evaluating algorithmic fairness of a machine learning model includes receiving an input dataset and generating an anonymized reconstructed dataset based at least on the input dataset. The process includes introducing a predetermined bias into the generated dataset, forming an evaluation dataset based at least on the generated dataset with the predetermined bias, and outputting the evaluation dataset. In various embodiments, a process for training a generative model includes configuring a generative model and receiving training data, where the training data includes a tabular dataset. The process includes using computer processor(s) and the received training data to train the generative model, where the generative model is sampled to generate a dataset with a predetermined bias.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: August 22, 2023
    Inventors: Sérgio Gabriel Pontes Jesus, Duarte Miguel Rodrigues dos Santos Marques Alves, José Maria Pereira Rosa Correia Pombal, André Miguel Ferreira Da Cruz, Joäo António Sobral Leite Veiga, Joäo Guilherme Simöes Bravo Ferreira, Catarina Garcia Belém, Marco Oliveira Pena Sampaio, Pedro Dos Santos Saleiro, Pedro Gustavo Santos Rodrigues Bizarro
  • Publication number: 20230070086
    Abstract: In various embodiments, a process for constrained optimization for sequential error-based additive machine learning models (e.g., gradient boosting machines) includes configuring a sequential error-based additive machine learning model, receiving training data, and using one or more hardware processors to train the sequential error-based additive machine learning model using the received training data. The training includes performing optimization iterations to minimize a loss function that includes a fairness constraint, where the fairness constraint is based at least in part on disparities between groups.
    Type: Application
    Filed: May 26, 2022
    Publication date: March 9, 2023
    Inventors: André Miguel Ferreira da Cruz, Catarina Garcia Belém, Pedro dos Santos Saleiro, Pedro Gustavo Santos Rodrigues Bizarro, João Guilherme Simões Bravo Ferreira
  • Publication number: 20230074606
    Abstract: In various embodiments, a process for obtaining a generated dataset with a predetermined bias for evaluating algorithmic fairness of a machine learning model includes receiving an input dataset and generating an anonymized reconstructed dataset based at least on the input dataset. The process includes introducing a predetermined bias into the generated dataset, forming an evaluation dataset based at least on the generated dataset with the predetermined bias, and outputting the evaluation dataset. In various embodiments, a process for training a generative model includes configuring a generative model and receiving training data, where the training data includes a tabular dataset. The process includes using computer processor(s) and the received training data to train the generative model, where the generative model is sampled to generate a dataset with a predetermined bias.
    Type: Application
    Filed: June 30, 2022
    Publication date: March 9, 2023
    Inventors: Sérgio Gabriel Pontes Jesus, Duarte Miguel Rodrigues dos Santos Marques Alves, José Maria Pereira Rosa Correia Pombal, André Miguel Ferreira da Cruz, João António Sobral Leite Veiga, João Guilherme Simões Bravo Ferreira, Catarina Garcia Belém, Marco Oliveira Pena Sampaio, Pedro dos Santos Saleiro, Pedro Gustavo Santos Rodrigues Bizarro
  • Publication number: 20220114494
    Abstract: A series of sequential inputs and a prediction output of a machine learning model, to be analyzed for interpreting the prediction output, are received. An input included in the series of sequential inputs is selected to be analyzed for relevance in producing the prediction output. Background data for the selected input of the series of sequential inputs to be analyzed is determined. The background data is used as a replacement for the selected input of the series of sequential inputs to determine a plurality of perturbed prediction outputs of the machine learning model. A relevance metric is determined for the selected input based at least in part on the plurality of perturbed prediction outputs of the machine learning model.
    Type: Application
    Filed: October 13, 2021
    Publication date: April 14, 2022
    Inventors: João Pedro Bento Sousa, Pedro dos Santos Saleiro, André Miguel Ferreira da Cruz, Pedro Gustavo Santos Rodrigues Bizarro
  • Publication number: 20220012542
    Abstract: In various embodiments, a process for fairness-aware hyperparameter optimization based on bandit-based techniques includes receiving a fairness evaluation metric for evaluating a fairness of a machine learning model to be trained and receiving a performance metric for evaluating performance of the machine learning model to be trained. The process includes automatically evaluating candidate combinations of hyperparameters of the machine learning model based at least in part on multi-objective optimization including scalarization and using the fairness evaluation metric and the performance metric to select a hyperparameter combination to utilize among the candidate combinations of hyperparameters, wherein evaluating the candidate combinations of hyperparameters of the machine learning model includes automatically and dynamically determining a relative weighting between the fairness evaluation metric and the performance metric.
    Type: Application
    Filed: July 8, 2021
    Publication date: January 13, 2022
    Inventors: André Miguel Ferreira da Cruz, Pedro dos Santos Saleiro, Pedro Gustavo Santos Rodrigues Bizarro, Carlos Manuel Milheiro de Oliveira Pinto Soares