def time_slot_sensor(db):
"""Define sensor for time slot events."""
sensor = DBSensor(name="TimeSlot15MinSensor",
event_resolution=timedelta(minutes=15))
session.add(sensor)
session.flush()
return sensor
def rolling_day_ahead_beliefs_about_time_slot_events(
request, time_slot_sensor: DBSensor):
"""Define multiple day-ahead beliefs about an ex post time slot event."""
source = (session.query(DBBeliefSource).filter(
DBBeliefSource.id == request.param).one_or_none())
beliefs = []
for i in range(1, 11): # ten events
# Recent belief (horizon 48 hours)
belief = DBTimedBelief(
sensor=time_slot_sensor,
source=source,
value=10 + i,
belief_time=datetime(2050, 1, 1, 10, tzinfo=utc) +
timedelta(hours=i),
event_start=datetime(2050, 1, 3, 10, tzinfo=utc) +
timedelta(hours=i),
)
session.add(belief)
beliefs.append(belief)
# Slightly older beliefs (belief_time an hour earlier)
belief = DBTimedBelief(
sensor=time_slot_sensor,
source=source,
value=100 + i,
belief_time=datetime(2050, 1, 1, 10, tzinfo=utc) +
timedelta(hours=i - 1),
event_start=datetime(2050, 1, 3, 10, tzinfo=utc) +
timedelta(hours=i),
)
session.add(belief)
beliefs.append(belief)
return beliefs
def day_ahead_belief_about_ex_post_time_slot_event(
ex_post_time_slot_sensor: DBSensor, test_source_a: DBBeliefSource):
"""Define day-ahead belief about an ex post time slot event."""
belief = DBTimedBelief(
source=test_source_a,
sensor=ex_post_time_slot_sensor,
value=10,
belief_time=datetime(2018, 1, 1, 10, tzinfo=utc),
event_start=datetime(2018, 1, 2, 22, 45, tzinfo=utc),
)
session.add(belief)
return belief
def ex_post_time_slot_sensor(db):
"""Define sensor for time slot events known in advance (ex post)."""
sensor = DBSensor(
name="ExPostSensor",
event_resolution=timedelta(minutes=15),
knowledge_horizon=(
timedelta_x_days_ago_at_y_oclock,
dict(x=1, y=12, z="Europe/Amsterdam"),
),
)
session.add(sensor)
session.flush()
return sensor
def multiple_day_ahead_beliefs_about_ex_post_time_slot_event(
ex_post_time_slot_sensor: DBSensor, test_source_a: DBBeliefSource):
"""Define multiple day-ahead beliefs about an ex post time slot event."""
n = 10
event_start = datetime(2025, 1, 2, 22, 45, tzinfo=utc)
beliefs = []
for i in range(n):
belief = DBTimedBelief(
source=test_source_a,
sensor=ex_post_time_slot_sensor,
value=10 + i,
belief_time=ex_post_time_slot_sensor.knowledge_time(event_start) -
timedelta(hours=i + 1),
event_start=event_start,
)
session.add(belief)
beliefs.append(belief)
return beliefs
def test_source_b():
"""Define source for test beliefs."""
source = DBBeliefSource("Source B")
session.add(source)
return source
def instantaneous_sensor(db):
"""Define sensor for instantaneous events."""
sensor = DBSensor(name="InstantaneousSensor")
session.add(sensor)
session.flush()
return sensor
