the biological path towards strong ai strange loop 2017, st. louis

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

Layers

Layers and Columns

Layers contain Neurons

The Pyramidal

Neuron

The Pyramidal

NeuronInactive State

The Pyramidal

NeuronInactive State

Active State

The Pyramidal

NeuronInactive State

Active StatePredictive State

The Pyramidal

Neuron

Apical

Distal

Proximal

The Pyramidal

Neuron

Layer Integration Zones

Layers ComputeApical

Distal

ProximalDriver Signal

Modulatory Signals

Layer in Software

Layer in Software

Layer in Software

Sparse Distributed Representationshow neurons encode information

EncodersExample: Date Encoding

Spatial Pooling

• proximal feedforward input activates mini-columns• normalizes sparsity of encoded representation• maintains semantic meaning of representations

ProximalDriver Signal

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

ProximalDriver Signal

Modulatory Signals

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