func TestSimpleDateEncoding(t *testing.T) {
p := NewDateEncoderParams()
p.SeasonWidth = 3
p.DayOfWeekWidth = 1
p.WeekendWidth = 3
p.TimeOfDayWidth = 5
de := NewDateEncoder(p)
// season is aaabbbcccddd (1 bit/month) TODO should be <<3?
// should be 000000000111 (centered on month 11 - Nov)
seasonExpected := utils.Make1DBool([]int{0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1})
// week is SMTWTFS
// differs from python implementation
dayOfWeekExpected := utils.Make1DBool([]int{0, 0, 0, 0, 1, 0, 0})
// not a weekend, so it should be "False"
weekendExpected := utils.Make1DBool([]int{1, 1, 1, 0, 0, 0})
// time of day has radius of 4 hours and w of 5 so each bit = 240/5 min = 48min
// 14:55 is minute 14*60 + 55 = 895; 895/48 = bit 18.6
// should be 30 bits total (30 * 48 minutes = 24 hours)
timeOfDayExpected := utils.Make1DBool([]int{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0})
d := time.Date(2010, 11, 4, 14, 55, 0, 0, time.UTC)
encoded := de.Encode(d)
t.Log(utils.Bool2Int(encoded))
expected := append(seasonExpected, dayOfWeekExpected...)
expected = append(expected, weekendExpected...)
expected = append(expected, timeOfDayExpected...)
assert.Equal(t, utils.Bool2Int(expected), utils.Bool2Int(encoded))
}
func TestSimpleEncoding(t *testing.T) {
p := NewScalerEncoderParams(3, 1, 8)
p.N = 14
p.Periodic = true
//p.Verbosity = 5
e := NewScalerEncoder(p)
encoded := e.Encode(1, false)
t.Log(encoded)
expected := utils.Make1DBool([]int{1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1})
assert.True(t, len(encoded) == 14)
assert.Equal(t, expected, encoded)
encoded = e.Encode(2, false)
expected = utils.Make1DBool([]int{0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0})
assert.True(t, len(encoded) == 14)
assert.Equal(t, expected, encoded)
encoded = e.Encode(3, false)
expected = utils.Make1DBool([]int{0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0})
assert.True(t, len(encoded) == 14)
assert.Equal(t, expected, encoded)
}
func TestCompute1(t *testing.T) {
/*
Checks that feeding in the same input vector leads to polarized
permanence values: either zeros or ones, but no fractions
*/
spParams := NewSpParams()
spParams.InputDimensions = []int{9}
spParams.ColumnDimensions = []int{5}
spParams.PotentialRadius = 3
spParams.PotentialPct = 0.5
spParams.GlobalInhibition = false
spParams.LocalAreaDensity = -1
spParams.NumActiveColumnsPerInhArea = 3
spParams.StimulusThreshold = 1
spParams.SynPermInactiveDec = 0.01
spParams.SynPermActiveInc = 0.1
spParams.SynPermConnected = 0.10
spParams.MinPctOverlapDutyCycle = 0.1
spParams.MinPctActiveDutyCycle = 0.1
spParams.DutyCyclePeriod = 10
spParams.MaxBoost = 10.0
sp := NewSpatialPooler(spParams)
sp.potentialPools = NewDenseBinaryMatrix(sp.numColumns, sp.numInputs)
for i := 0; i < sp.numColumns; i++ {
for j := 0; j < sp.numInputs; j++ {
sp.potentialPools.Set(i, j, true)
}
}
inhibitColumnsMock := func(overlaps []float64, inhibitColumnsGlobal, inhibitColumnsLocal inhibitColumnsFunc) []int {
return []int{0, 1, 2, 3, 4}
}
inputVector := utils.Make1DBool([]int{1, 0, 1, 0, 1, 0, 0, 1, 1})
activeArray := make([]bool, 5)
for i := 0; i < 20; i++ {
sp.Compute(inputVector, true, activeArray, inhibitColumnsMock)
}
for i := 0; i < 20; i++ {
perm := Float64SliceToInt(GetRowFromSM(sp.permanences, i))
assert.Equal(t, inputVector, utils.Make1DBool(perm))
}
}
func TestCompute2(t *testing.T) {
/*
Checks that columns only change the permanence values for
inputs that are within their potential pool
*/
spParams := NewSpParams()
spParams.InputDimensions = []int{10}
spParams.ColumnDimensions = []int{5}
spParams.PotentialRadius = 3
spParams.PotentialPct = 0.5
spParams.GlobalInhibition = false
spParams.LocalAreaDensity = -1
spParams.NumActiveColumnsPerInhArea = 3
spParams.StimulusThreshold = 1
spParams.SynPermInactiveDec = 0.01
spParams.SynPermActiveInc = 0.1
spParams.SynPermConnected = 0.10
spParams.MinPctOverlapDutyCycle = 0.1
spParams.MinPctActiveDutyCycle = 0.1
spParams.DutyCyclePeriod = 10
spParams.MaxBoost = 10.0
sp := NewSpatialPooler(spParams)
inhibitColumnsMock := func(overlaps []float64, inhibitColumnsGlobal, inhibitColumnsLocal inhibitColumnsFunc) []int {
return []int{0, 1, 2, 3, 4}
}
inputVector := utils.Make1DBool([]int{1, 1, 1, 1, 1, 1, 1, 1, 1, 1})
activeArray := make([]bool, 5)
for i := 0; i < 20; i++ {
sp.Compute(inputVector, true, activeArray, inhibitColumnsMock)
}
for i := 0; i < sp.numColumns; i++ {
perm := Float64SliceToInt(GetRowFromSM(sp.permanences, i))
potential := sp.potentialPools.GetDenseRow(i)
assert.Equal(t, potential, utils.Make1DBool(perm))
}
}
func TestSimpleDecoding(t *testing.T) {
p := NewScalerEncoderParams(3, 1, 8)
p.Radius = 1.5
p.Periodic = true
//p.Verbosity = 5
e := NewScalerEncoder(p)
// Test with a "hole"
encoded := utils.Make1DBool([]int{1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0})
expected := []utils.TupleFloat{utils.TupleFloat{7.5, 7.5}}
actual := e.Decode(encoded)
assert.Equal(t, expected, actual)
// Test with something wider than w, and with a hole, and wrapped
encoded = utils.Make1DBool([]int{1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0})
expected = []utils.TupleFloat{utils.TupleFloat{7.5, 8}, utils.TupleFloat{1, 1}}
actual = e.Decode(encoded)
assert.Equal(t, expected, actual)
// Test with something wider than w, no hole
encoded = utils.Make1DBool([]int{1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0})
expected = []utils.TupleFloat{utils.TupleFloat{1.5, 2.5}}
actual = e.Decode(encoded)
assert.Equal(t, expected, actual)
// 1
encoded = utils.Make1DBool([]int{1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1})
expected = []utils.TupleFloat{utils.TupleFloat{1, 1}}
actual = e.Decode(encoded)
assert.Equal(t, expected, actual)
// 2
encoded = utils.Make1DBool([]int{0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0})
expected = []utils.TupleFloat{utils.TupleFloat{2, 2}}
actual = e.Decode(encoded)
assert.Equal(t, expected, actual)
}
func TestWideEncoding(t *testing.T) {
p := NewScalerEncoderParams(5, 0, 24)
p.Periodic = true
//p.Verbosity = 5
p.Radius = 4
e := NewScalerEncoder(p)
encoded := e.Encode(14.916666666666666, false)
t.Log(encoded)
expected := utils.Make1DBool([]int{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0})
assert.True(t, len(encoded) == 30)
assert.Equal(t, utils.Bool2Int(expected), utils.Bool2Int(encoded))
}
func TestNarrowEncoding(t *testing.T) {
p := NewScalerEncoderParams(3, 0, 1)
p.Periodic = false
//p.Verbosity = 5
p.Radius = 1
e := NewScalerEncoder(p)
encoded := make([]bool, 6)
e.EncodeToSlice(0, false, encoded)
t.Log(encoded)
expected := utils.Make1DBool([]int{1, 1, 1, 0, 0, 0})
assert.True(t, len(encoded) == 6)
assert.Equal(t, utils.Bool2Int(expected), utils.Bool2Int(encoded))
}