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Developmental Constraints Aid the Acquisition of Binocular Disparity Sensitivities |
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@article{dominguez:Aid-Binocular:NC02,
author = {Melissa Dominguez and Robert A. Jacobs},
title = {Developmental Constraints Aid the Acquisition of Binocular Disparity Sensitivities},
journal = {Neural Computation},
volume = {15}
number = {1}
year = {2002},
month = {June},
abstract = { This article considers the hypothesis that systems
learning aspects of visual perception may benefit
from the use of suitably designed developmental
progressions during training. We report the results
of simulations in which four different models were
trained to detect binocular disparities in paris of
visual images. Three of the models were
"developmental models" in the sense that the nature
of their visual input changed during the course of
training. These models received a relatively
impoverished visual input early in training, and the
quality of this input improved as training
progressed. One model used a
course-scale-to-multiscale developmental
progression, and another model used a
fine-scale-to-multiscale progression, and the third
model used a random progression. The final model was
non-developmental in the sense that the nature of
its input remained the same throughout the training
period. The simulation results show that the two
developmental models whose progressions were
organized by spatial frequency content consistently
outperformed the non-developmental and random
developmental models. We speculate that the superior
performance of these two models is due to two
important features of their developmental
progressions: (1) these models were exposed to
visual inputs at a single scale early in training,
and (2) the spatial scale of their inputs progressed
in an orderly fashion from one scale to a
neighboring scale during training. Simulation resuls
consistent with these speculations are presented. We
conclude that suitably designed developmental
sequences can be useful to systems learning to
detect binocular disparities. The idea that visual
development can aid visual learning is a viable
hypothesis in need of future study. }
}