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Predicting Fluid Intelligence from Structural MRI Using Random Forest regression

  • Agata Wlaszczyk
  • Agnieszka Kaminska
  • Agnieszka Pietraszek
  • Jakub Dabrowski
  • Mikolaj A. Pawlak
  • Hanna NowickaEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11791)

Abstract

Fluid intelligence (FI) indicates a set of general abilities like pattern recognition, abstract thinking, and problem-solving. FI is related to inherent, biological factors. We present a method to predict the fluid intelligence score in children (9–10 y/o) from their structural brain scans. For the purposes of this work, we used features derived from the T1-weighted Magnetic Resonance scans from the ABCD study. We used data from 3739 subjects for training and 415 for validation of the model. As features we used the volumes of gray matter regions of interest provided by the challenge organizers, as well as three additional groups of features. These include signal intensity features based on the ROIs, as well as shape-based features derived from the anterior and posterior cross sectional area of the corpus callosum. We used the random forest regressor model for prediction. We compare its performance to other regression-based models (XGBoost Regression and Support Vector Regression). Additionally, we ran a mean decrease accuracy (MDA) algorithm to select features that had high influence on the prediction results. The results we have obtained for the validation set were as follows: MSE = 67.39, R-squared = 0.0762. The proposed method showed promising results and has the potential to provide a good prediction of fluid intelligence based on structural brain scans.

Keywords

Adolescence development Fluid intelligence Random Forest Regressor 

Notes

Acknowledgement

The authors would like to thank Professor Mark Jenkinson for his helpful comments regarding the manuscript.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.TooplooxWroclawPoland
  2. 2.Adam Mickiewicz University in PoznanPoznanPoland
  3. 3.LodzPoland
  4. 4.Poznan University of TechnologyPoznanPoland
  5. 5.Poznan University of Medical SciencesPoznanPoland
  6. 6.Inteneural Networks Inc.ChicagoUSA
  7. 7.FMRIB, Wellcome Centre for Integrative NeuroimagingUniversity of OxfordOxfordUK

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