def testDayOfWeek(self):
""" Creating date encoder instance. """
# 1 bit for days in a week (x7 days -> 7 bits), no other fields encoded
p = DateEncoderParameters()
p.dayOfWeek_width = 1
p.verbose = False
enc = DateEncoder(p)
# In the middle of fall, Thursday, not a weekend, afternoon - 4th Nov,
# 2010, 14:55
d = datetime.datetime(2010, 11, 4, 14, 55)
bits = enc.encode(d)
# Week is MTWTFSS,
# Monday = 0 (for python datetime.datetime.timetuple())
dayOfWeekExpected = [0, 0, 0, 1, 0, 0, 0] #Thu
expected = dayOfWeekExpected
self.assertEqual(bits.size, 7)
self.assertEqual(expected, bits.dense.tolist())
# check a day is encoded consistently during most of its hours.
p = DateEncoderParameters()
p.dayOfWeek_width = 40
p.verbose = False
enc = DateEncoder(p)
dMorn = datetime.datetime(2010, 11, 4, 8, 00) # 8 AM to
dEve = datetime.datetime(2010, 11, 4, 8 + 12, 00) # 8 PM
bits1 = enc.encode(dMorn)
bits2 = enc.encode(dEve)
assert (bits1.getOverlap(bits2) > 40 * .25)
# Check the long term statistics of the encoder.
p = DateEncoderParameters()
p.dayOfWeek_width = 300
p.verbose = False
enc = DateEncoder(p)
sdr = SDR(enc.dimensions)
test_period = 1000
metrics = Metrics(sdr, test_period)
now = datetime.datetime.now()
inc = datetime.timedelta(hours=1)
for i in range(test_period):
enc.encode(now, sdr)
now += inc
#print( metrics )
assert (metrics.sparsity.min() >= .05)
assert (metrics.sparsity.max() <= .20)
assert (metrics.activationFrequency.min() >= .05)
assert (metrics.activationFrequency.max() <= .20)
def testDateEncoder(self):
""" Creating date encoder instance. """
# 3 bits for season(4seasons), 1 bit for day of week, 1 for weekend, 5 for time of day
p = DateEncoderParameters()
p.season_width = 3
p.dayOfWeek_width = 1
p.weekend_width = 1
p.timeOfDay_width = 5
p.verbose = False
enc = DateEncoder(p)
# In the middle of fall, Thursday, not a weekend, afternoon - 4th Nov,
# 2010, 14:55
d = datetime.datetime(2010, 11, 4, 14, 55)
# d = datetime.datetime(2010, 11, 1, 8, 55) # DEBUG
bits = enc.encode(d)
# Season is aaabbbcccddd (1 bit/month)
seasonExpected = [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1]
# Week is MTWTFSS contrary to localtime documentation, Monday = 0 (for
# python datetime.datetime.timetuple()
dayOfWeekExpected = [0, 0, 0, 1, 0, 0, 0]
# Not a weekend, so it should be "False"
weekendExpected = [1, 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 = ([
0, 0, 0, 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
])
expected = seasonExpected + dayOfWeekExpected + weekendExpected + timeOfDayExpected
self.assertEqual(bits.size, 51)
self.assertEqual(expected, bits.dense.tolist())