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The Biological
Path Toward
STRONG AI
Matt Taylor
@rhyolight
Numenta
HTM Community Manager
Agenda
• Why Weak AI is not intelligent

• Cortex anatomy lesson

• The power of the pyramidal neuron

• Layers within columns

• HTM Theory details: SDRs, Spatial Pooling, Temporal
Memory

• HTM Sensorimotor Theory details
Weak AI
won’t produce
Intelligence
what’s missing?
Realistic
Neurons
Movement
Let’s talk about
brains
The Biological Path Towards Strong AI Strange Loop 2017, St. Louis
The Biological Path Towards Strong AI Strange Loop 2017, St. Louis
Layers
Layers and Columns
Layers contain Neurons
The
Pyramidal
Neuron
The
Pyramidal
Neuron
Inactive State
The
Pyramidal
Neuron
Inactive State
Active State
The
Pyramidal
Neuron
Inactive State
Active State
Predictive State
The
Pyramidal
Neuron
Apical
Distal
Proximal
The
Pyramidal
Neuron
Layer Integration Zones
Layers Compute
Apical
Distal
Proximal
Driver Signal
Modulatory Signals
Layer in Software
Layer in Software
Layer in Software
Sparse Distributed Representations
how neurons encode information
Encoders
Example:
Date Encoding
Spatial Pooling
• proximal feedforward input activates mini-columns

• normalizes sparsity of encoded representation

• maintains semantic meaning of representations
Proximal
Driver Signal
The Biological Path Towards Strong AI Strange Loop 2017, St. Louis
The Biological Path Towards Strong AI Strange Loop 2017, St. Louis
The Biological Path Towards Strong AI Strange Loop 2017, St. Louis
Distal
Temporal Memory
• identifies context of input based upon distal segments

• works within structure of mini-columns

• puts cells into predictive states for next time step
Apical
Distal
Proximal
Driver Signal
Modulatory Signals
The Biological Path Towards Strong AI Strange Loop 2017, St. Louis
The Biological Path Towards Strong AI Strange Loop 2017, St. Louis
The Biological Path Towards Strong AI Strange Loop 2017, St. Louis
The Biological Path Towards Strong AI Strange Loop 2017, St. Louis
The Biological Path Towards Strong AI Strange Loop 2017, St. Louis
numenta.com/papers/
The Biological Path Towards Strong AI Strange Loop 2017, St. Louis
numenta.org
@rhyolight
@numenta

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The Biological Path Towards Strong AI Strange Loop 2017, St. Louis