Capacity Test Results

January 5, 2015

Global parameters

tmParams:
    cellsPerColumn: 8
    initialPermanence: 0.5
    connectedPermanence: 0.6
    permanenceIncrement: 0.1
    permanenceDecrement: 0.02
    maxSegmentsPerCell: 255
    maxSynapsesPerSegment: 255
tpParams:
    synPermInactiveDec: 0
    synPermActiveInc: 0.001
    synPredictedInc: 0.5

1024 columns, strict parameters

Parameters

n: 1024
w: 20
tmParams:
  columnDimensions: [1024]
  minThreshold: 40
  activationThreshold: 40
  maxNewSynapseCount: 40
tpParams:
  columnDimensions: [1024]
  numActiveColumnsPerInhArea: 20
  potentialPct: 0.9
  initConnectedPct: 0.5

Results

1024_strict.xlsx

2 worlds, increasing # elements

10 elements, increasing # worlds

1024 columns, reasonable parameters (v1)

Parameters

n: 1024
w: 20
tmParams:
  columnDimensions: [1024]
  minThreshold: 9
  activationThreshold: 12
  maxNewSynapseCount: 20
tpParams:
  columnDimensions: [1024]
  numActiveColumnsPerInhArea: 20
  potentialPct: 0.9
  initConnectedPct: 0.5
  poolingThreshUnpredicted: 0.4

Results

1024_reasonable1.xlsx

2 worlds, increasing # elements

10 elements, increasing # worlds

1024 columns, reasonable parameters (v2)

Parameters

n: 1024
w: 20
tmParams:
  columnDimensions: [1024]
  minThreshold: 15
  activationThreshold: 20
  maxNewSynapseCount: 30
tpParams:
  columnDimensions: [1024]
  numActiveColumnsPerInhArea: 20
  potentialPct: 0.9
  initConnectedPct: 0.5
  poolingThreshUnpredicted: 0.4

Results

1024_reasonable2.xlsx

2 worlds, increasing # elements

Note: Only ran up to 80 elements, because any higher than that hit the synapse limit. Just be aware that the scale for this chart is different from the others.

10 elements, increasing # worlds

1024 columns, reasonable parameters (v3)

Parameters

n: 1024
w: 20
tmParams:
  columnDimensions: [1024]
  minThreshold: 20
  activationThreshold: 20
  maxNewSynapseCount: 30
tpParams:
  columnDimensions: [1024]
  numActiveColumnsPerInhArea: 20
  potentialPct: 0.9
  initConnectedPct: 0.5
  poolingThreshUnpredicted: 0.4

Results

1024_reasonable3.xlsx

2 worlds, increasing # elements

10 elements, increasing # worlds

2048 columns, reasonable parameters (v1)

Parameters

n: 2048
w: 40
tmParams:
  columnDimensions: [2048]
  minThreshold: 40
  activationThreshold: 40
  maxNewSynapseCount: 60
tpParams:
  columnDimensions: [2048]
  numActiveColumnsPerInhArea: 40
  potentialPct: 0.9
  initConnectedPct: 0.5
  poolingThreshUnpredicted: 0.4

Results

Note: Notice that the scale for these charts is different from the others, since it skips by 20 instead of by 10. This was to speed up the tests.

2048_reasonable1.xlsx

2 worlds, increasing # elements

10 elements, increasing # worlds

2048 columns, reasonable parameters (v2)

Parameters

n: 2048
w: 40
tmParams:
  columnDimensions: [2048]
  minThreshold: 20
  activationThreshold: 20
  maxNewSynapseCount: 30
tpParams:
  columnDimensions: [2048]
  numActiveColumnsPerInhArea: 40
  potentialPct: 0.9
  initConnectedPct: 0.5
  poolingThreshUnpredicted: 0.4

Results

Note: Notice that the scale for these charts is different from the others, since it skips by 20 instead of by 10. This was to speed up the tests.

2048_reasonable2.xlsx

2 worlds, increasing # elements

10 elements, increasing # worlds