Research

ComplexitySoft Research

Scientific work that deepens the methods behind our applied R&D.

ComplexitySoft Research supports internal scientific investigation, methodological development and collaboration with external researchers and institutions.

ComplexitySoft Research is our internal research track, where we develop and investigate methods, models and scientific questions that expand the capabilities we bring to applied R&D.

ComplexitySoft Research

Current research

Work produced under ComplexitySoft Research and presented with ComplexitySoft affiliation.

ComplexitySoft Research SBNeC 2026

Structural Maturation of Neural Networks & Subjective Time

Investigates the relationship between the structural maturation of complex neural networks — modeled with Liquid State Machines — and temporal perception.

Evidence

  • Doctoral research completed in 2025
  • Presented at SBNeC 2026 with ComplexitySoft Research affiliation
ComplexitySoft Research SBNeC 2026

Visual Information Availability & Facial Exploration

Examines how the availability of visual information relates to gaze behavior and the hierarchical organization of facial exploration in emotion recognition, combining eye tracking and psychophysics.

Authors: Melina B. Urtado, Rafael D. Rodrigues, Sérgio S. Fukusima

Evidence

  • Presented at SBNeC 2026 with ComplexitySoft Research affiliation
  • Continuity with the team’s published eye-tracking research

Research

Research areas

  • Computational neuroscience & complex neural networks

    Liquid State Machines, structural maturation of neural networks and temporal perception.

  • Eye-tracking & visual behavior analysis

    Experimental design, gaze-data processing, fixation/AOI analysis, visualization and behavioral interpretation.

  • Complex networks & machine learning

    Graph-based classification, structural outlier detection and community detection in multilayer networks.

  • Psychophysics & experimental methods

    Visual perception, facial processing, signal detection theory, psychometric methods and quantitative behavioral analysis.

Research by our team

Selected work by our team

Relevant research by current team members that predates, or is not formally affiliated with, ComplexitySoft.

Research by our team Neurocomputing 2020 · PLOS ONE 2023

Complex-Network Methods for Classification & Outlier Detection

A line of research using complex-network representations and graph-based analysis for classification and for detecting structural outliers, including community detection in multilayer networks.

Evidence

  • Multilayer network community-detection research
  • A Tourist Walk Approach for Internal and External Outlier Detection — Neurocomputing, 2020
  • Complex Network-based Classification of Radiographic Images for COVID-19 Diagnosis — PLOS ONE, 2023
Research by our team Behavioral Sciences 2024

Visual Field Restriction in Facial Expression Recognition

Eye-tracking and gaze-contingent psychophysics research investigating how restricting the visual field affects the recognition of facial expressions.

  • Visual Field Restriction in Facial Expression Recognition — Behavioral Sciences, 2024

Research

Publications & presentations

Scientific presentations

Selected team publications

  • Research by our team Neurocomputing · 2020

    A Tourist Walk Approach for Internal and External Outlier Detection

  • Research by our team PLOS ONE · 2023

    Complex Network-based Classification of Radiographic Images for COVID-19 Diagnosis

  • Research by our team Behavioral Sciences · 2024

    Visual Field Restriction in Facial Expression Recognition

Research

Collaborative research

A difficult problem may require both scientific domain reasoning and computational method development. Our joint eye-tracking research is the clearest example of how we work across disciplines.

In that work, responsibilities divide naturally:

Scientific domain reasoning

Melina Boratto Urtado, PhD

  • Psychophysics
  • Visual perception
  • Facial-expression recognition
  • Experimental design
  • Eye-tracking interpretation
  • Behavioral meaning

Computational method development

Rafael Delalibera Rodrigues, PhD

  • Raw-data processing
  • Analytical and batch pipelines
  • AOI and fixation metrics
  • Visualization
  • Statistical exports
  • Pattern analysis with scientific Python

We welcome collaboration with universities, laboratories and external researchers on problems that benefit from this combination. For research collaboration, write to research@complexitysoft.com.