Search Results for author: Osvaldo N. Oliveira Jr

Found 6 papers, 2 papers with code

A survey on Big Data and Machine Learning for Chemistry

no code implementations23 Apr 2019 Jose F. Rodrigues Jr, Larisa Florea, Maria C F de Oliveira, Dermot Diamond, Osvaldo N. Oliveira Jr

Herein we review aspects of leading-edge research and innovation in chemistry which exploits big data and machine learning (ML), two computer science fields that combine to yield machine intelligence.

BIG-bench Machine Learning

On the role of words in the network structure of texts: application to authorship attribution

no code implementations11 May 2017 Camilo Akimushkin, Diego R. Amancio, Osvaldo N. Oliveira Jr

Well-established automatic analyses of texts mainly consider frequencies of linguistic units, e. g. letters, words and bigrams, while methods based on co-occurrence networks consider the structure of texts regardless of the nodes label (i. e. the words semantics).

Authorship Attribution

Text authorship identified using the dynamics of word co-occurrence networks

no code implementations29 Jul 2016 Camilo Akimushkin, Diego R. Amancio, Osvaldo N. Oliveira Jr

The identification of authorship in disputed documents still requires human expertise, which is now unfeasible for many tasks owing to the large volumes of text and authors in practical applications.

Time Series Time Series Analysis

Musical elements in the discrete-time representation of sound

2 code implementations22 Dec 2014 Renato Fabbri, Vilson Vieira da Silva Junior, Antônio Carlos Silvano Pessotti, Débora Cristina Corrêa, Osvaldo N. Oliveira Jr

In this article, each musical element is related by equations and algorithms to the discrete-time samples of sounds, and each of these relations are implemented in scripts within a software toolbox, referred to as MASS (Music and Audio in Sample Sequences).

Sound Popular Physics

Temporal stability in human interaction networks

2 code implementations29 Oct 2013 Renato Fabbri, Ricardo Fabbri, Deborah C. Antunes, Marilia M. Pisani, Osvaldo N. Oliveira Jr

The principal components of the participants in the topological metrics space remain practically unchanged as different sets of messages are considered.

Social and Information Networks Physics and Society I.5.3

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