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CORnet: Modeling the Neural Mechanisms of Core Object Recognition

View ORCID ProfileJonas Kubilius, View ORCID ProfileMartin Schrimpf, View ORCID ProfileAran Nayebi, Daniel Bear, Daniel L. K. Yamins, View ORCID ProfileJames J. DiCarlo
doi: https://doi.org/10.1101/408385
Jonas Kubilius
1McGovern Institute for Brain Research, MIT, Cambridge, MA 02139
2Brain and Cognition, KU Leuven, Leuven, Belgium
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Martin Schrimpf
3Department of Brain and Cognitive Sciences, MIT, Cambridge, MA 02139
4Center for Brains, Minds and Machines, MIT, Cambridge, MA 02139
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Aran Nayebi
5Neurosciences PhD Program, Stanford University, Stanford, CA 94305
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Daniel Bear
6Department of Psychology, Stanford University, Stanford, CA 94305
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Daniel L. K. Yamins
6Department of Psychology, Stanford University, Stanford, CA 94305
7Department of Computer Science, Stanford University, Stanford, CA 94305
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James J. DiCarlo
1McGovern Institute for Brain Research, MIT, Cambridge, MA 02139
3Department of Brain and Cognitive Sciences, MIT, Cambridge, MA 02139
4Center for Brains, Minds and Machines, MIT, Cambridge, MA 02139
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Abstract

Deep artificial neural networks with spatially repeated processing (a.k.a., deep convolutional ANNs) have been established as the best class of candidate models of visual processing in primate ventral visual processing stream. Over the past five years, these ANNs have evolved from a simple feedforward eight-layer architecture in AlexNet to extremely deep and branching NAS-Net architectures, demonstrating increasingly better object categorization performance and increasingly better explanatory power of both neural and behavioral responses. However, from the neuroscientist’s point of view, the relationship between such very deep architectures and the ventral visual pathway is incomplete in at least two ways. On the one hand, current state-of-the-art ANNs appear to be too complex (e.g., now over 100 levels) compared with the relatively shallow cortical hierarchy (4-8 levels), which makes it difficult to map their elements to those in the ventral visual stream and to understand what they are doing. On the other hand, current state-of-the-art ANNs appear to be not complex enough in that they lack recurrent connections and the resulting neural response dynamics that are commonplace in the ventral visual stream. Here we describe our ongoing efforts to resolve both of these issues by developing a “CORnet” family of deep neural network architectures. Rather than just seeking high object recognition performance (as the state-of-the-art ANNs above), we instead try to reduce the model family to its most important elements and then gradually build new ANNs with recurrent and skip connections while monitoring both performance and the match between each new CORnet model and a large body of primate brain and behavioral data. We report here that our current best ANN model derived from this approach (CORnet-S) is among the top models on Brain-Score, a composite benchmark for comparing models to the brain, but is simpler than other deep ANNs in terms of the number of convolutions performed along the longest path of information processing in the model. All CORnet models are available at github.com/dicarlolab/CORnet, and we plan to up-date this manuscript and the available models in this family as they are produced.

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Posted September 04, 2018.
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CORnet: Modeling the Neural Mechanisms of Core Object Recognition
Jonas Kubilius, Martin Schrimpf, Aran Nayebi, Daniel Bear, Daniel L. K. Yamins, James J. DiCarlo
bioRxiv 408385; doi: https://doi.org/10.1101/408385
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CORnet: Modeling the Neural Mechanisms of Core Object Recognition
Jonas Kubilius, Martin Schrimpf, Aran Nayebi, Daniel Bear, Daniel L. K. Yamins, James J. DiCarlo
bioRxiv 408385; doi: https://doi.org/10.1101/408385

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