def testTimeOfDay(self):
""" Creating date encoder instance. """
# 3 bits for season (x4 seasons -> 12 bits), no other fields encoded
p = DateEncoderParameters()
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)
# Time of day has radius of 4 hours and w of 5,
# so each bit = 240/5min = 48min.
# 14:55 is minute 14*60 + 55 = 895; 895/48 = cetral bit= bit 18.6 ->18 #FIXME we should round this, so becomes bit19
# We activate our 5(=w)bits around the central bit -> thus [18-(5-1)/2, 18+(5-1)/2] = [16, 20]
# Encoder 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 = timeOfDayExpected
self.assertEqual(bits.size, 30)
self.assertEqual(expected, bits.dense.tolist())
def testSeason(self):
""" Creating date encoder instance. """
# 3 bits for season (x4 seasons -> 12 bits), no other fields encoded
p = DateEncoderParameters()
p.season_width = 3
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)
# Season is aaabbbcccddd (1 bit/month)
seasonExpected = [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1]
expected = seasonExpected
self.assertEqual(bits.size, 12)
self.assertEqual(expected, bits.dense.tolist())
def testWeekend(self):
""" Creating date encoder instance. """
# 1 bit for weekend (x2 possible values (True=is weekend/False=is not)-> 2 bits), no other fields encoded
p = DateEncoderParameters()
p.weekend_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)
# d = datetime.datetime(2010, 11, 1, 8, 55) # DEBUG
bits = enc.encode(d)
# Not a weekend, so it should be "False"
weekendExpected = [1, 0] # "[1,0] = False (category1), [0,1] = True (category2)
expected = weekendExpected
self.assertEqual(bits.size, 2)
self.assertEqual(expected, bits.dense.tolist())
def testHoliday(self):
""" Look at holiday more carefully because of the smooth transition. """
p = DateEncoderParameters()
p.holiday_width = 5
p.verbose = False
e = DateEncoder(p)
notholiday = [1, 1, 1, 1, 1, 0, 0, 0, 0, 0] # Not a holiday
holiday1 = [0, 0, 0, 1, 1, 1, 1, 1, 0, 0] # day before holiday
holiday = [0, 0, 0, 0, 0, 1, 1, 1, 1, 1] # day of holiday
holiday2 = [1, 1, 0, 0, 0, 0, 0, 1, 1, 1] # day after holiday
d = datetime.datetime(2011, 12, 24, 16,
00) #day before holiday, approaching
assert (all(e.encode(d).dense == holiday1))
d = datetime.datetime(2010, 12, 25, 4,
55) #Christmas day 25th Dec, a default holiday
assert (all(e.encode(d).dense == holiday))
d = datetime.datetime(1999, 12, 26, 8,
00) #day after holiday, approaching
assert (all(e.encode(d).dense == holiday2))
d = datetime.datetime(2008, 12, 27, 4, 55) #12/27 is not a holiday
assert (all(e.encode(d).dense == notholiday))
def testJSONSerialization(self):
"""
This test is to insure that Python can access the C++ serialization functions.
Serialization is tested more completely in C++ unit tests. Just checking
that Python can access it.
"""
p = DateEncoderParameters()
p.custom_width = 21
p.custom_days = ["sat,sun,fri"]
p.verbose = False
e1 = DateEncoder(p)
# serialize
filename = 'DateEncoder_serialize.json'
e1.saveToFile(filename, 'JSON')
e2 = DateEncoder()
e2.loadFromFile(filename, 'JSON')
d = datetime.datetime(1988, 5, 29, 20, 00)
#print(d)
self.assertEqual(e1.encode(d), e2.encode(d))
os.remove(filename)
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())
def testWeekend(self):
""" Test weekend encoder. """
p = DateEncoderParameters()
p.custom_width = 21
p.custom_days = ["sat,sun,fri"]
p.verbose = False
e = DateEncoder(p)
p = DateEncoderParameters()
p.weekend_width = 21
e2 = DateEncoder(p)
d = datetime.datetime(1988, 5, 29, 20, 00)
#print(d)
self.assertEqual(e.encode(d), e2.encode(d))
for _ in range(300):
d = d + datetime.timedelta(days=1)
self.assertEqual(e.encode(d), e2.encode(d))
def testHolidayMultiple(self):
""" Look at holiday more carefully because of the smooth transition. """
p = DateEncoderParameters()
p.holiday_width = 5
p.holiday_dates = [[12, 25], [2018, 4, 1], [2017, 4, 16]]
p.verbose = False
e = DateEncoder(p)
holiday = [0, 0, 0, 0, 0, 1, 1, 1, 1, 1]
notholiday = [1, 1, 1, 1, 1, 0, 0, 0, 0, 0]
d = datetime.datetime(2011, 12, 25, 4, 55)
assert (all(e.encode(d).dense == holiday))
d = datetime.datetime(2007, 12, 2, 4, 55)
assert (all(e.encode(d).dense == notholiday))
d = datetime.datetime(2018, 4, 1, 16, 10)
assert (all(e.encode(d).dense == holiday))
d = datetime.datetime(2017, 4, 16, 16, 10)
assert (all(e.encode(d).dense == holiday))
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)