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Dist Filter
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fixed dist name
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@TeachMeTW
TeachMeTW committed Nov 8, 2024
1 parent 0382abf commit c48a655
Showing 1 changed file with 178 additions and 82 deletions.
260 changes: 178 additions & 82 deletions .../analysis/intake/segmentation/trip_segmentation_methods/dwell_segmentation_dist_filter.py
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@
import attrdict as ad
import numpy as np
import datetime as pydt
import time

# Our imports
import emission.analysis.point_features as pf
Expand All @@ -20,6 +21,9 @@

import emission.analysis.intake.segmentation.restart_checking as eaisr
import emission.analysis.intake.segmentation.trip_segmentation_methods.trip_end_detection_corner_cases as eaistc
import emission.storage.decorations.stats_queries as esds
import emission.core.timer as ect
import emission.core.wrapper.pipelinestate as ecwp

class DwellSegmentationDistFilter(eaist.TripSegmentationMethod):
def __init__(self, time_threshold, point_threshold, distance_threshold):
Expand All @@ -46,9 +50,34 @@ def segment_into_trips(self, timeseries, time_query):
data that they want from the sensor streams in order to determine the
segmentation points.
"""
self.filtered_points_df = timeseries.get_data_df("background/filtered_location", time_query)
self.filtered_points_df.loc[:,"valid"] = True
self.transition_df = timeseries.get_data_df("statemachine/transition", time_query)
with ect.Timer() as t_get_filtered_points:
self.filtered_points_df = timeseries.get_data_df("background/filtered_location", time_query)
user_id = self.filtered_points_df["user_id"].iloc[0]
esds.store_pipeline_time(
user_id,
ecwp.PipelineStages.TRIP_SEGMENTATION.name + "/segment_into_trips_dist/get_filtered_points_df",
time.time(),
t_get_filtered_points.elapsed
)

with ect.Timer() as t_mark_valid:
self.filtered_points_df.loc[:, "valid"] = True
esds.store_pipeline_time(
user_id,
ecwp.PipelineStages.TRIP_SEGMENTATION.name + "/segment_into_trips_dist/mark_valid",
time.time(),
t_mark_valid.elapsed
)

with ect.Timer() as t_get_transition_df:
self.transition_df = timeseries.get_data_df("statemachine/transition", time_query)
esds.store_pipeline_time(
user_id,
ecwp.PipelineStages.TRIP_SEGMENTATION.name + "/segment_into_trips_dist/get_transition_df",
time.time(),
t_get_transition_df.elapsed
)

if len(self.transition_df) > 0:
logging.debug("self.transition_df = %s" % self.transition_df[["fmt_time", "transition"]])
else:
Expand All @@ -62,86 +91,153 @@ def segment_into_trips(self, timeseries, time_query):
last_trip_end_point = None
curr_trip_start_point = None
just_ended = True
for idx, row in self.filtered_points_df.iterrows():
currPoint = ad.AttrDict(row)
currPoint.update({"idx": idx})
logging.debug("-" * 30 + str(currPoint.fmt_time) + "-" * 30)
if curr_trip_start_point is None:
logging.debug("Appending currPoint because the current start point is None")
# segmentation_points.append(currPoint)

if just_ended:
if self.continue_just_ended(idx, currPoint, self.filtered_points_df):
# We have "processed" the currPoint by deciding to glom it
self.last_ts_processed = currPoint.metadata_write_ts
continue
# else:
# Here's where we deal with the start trip. At this point, the
# distance is greater than the filter.
sel_point = currPoint
logging.debug("Setting new trip start point %s with idx %s" % (sel_point, sel_point.idx))
curr_trip_start_point = sel_point
just_ended = False
else:
# Using .loc here causes problems if we have filtered out some points and so the index is non-consecutive.
# Using .iloc just ends up including points after this one.
# So we reset_index upstream and use it here.
last10Points_df = self.filtered_points_df.iloc[max(idx-self.point_threshold, curr_trip_start_point.idx):idx+1]
lastPoint = self.find_last_valid_point(idx)
if self.has_trip_ended(lastPoint, currPoint, timeseries):
last_trip_end_point = lastPoint
logging.debug("Appending last_trip_end_point %s with index %s " %
(last_trip_end_point, idx-1))
segmentation_points.append((curr_trip_start_point, last_trip_end_point))
logging.info("Found trip end at %s" % last_trip_end_point.fmt_time)
# We have processed everything up to the trip end by marking it as a completed trip
self.last_ts_processed = currPoint.metadata_write_ts
just_ended = True
# Now, we have finished processing the previous point as a trip
# end or not. But we still need to process this point by seeing
# whether it should represent a new trip start, or a glom to the
# previous trip
if not self.continue_just_ended(idx, currPoint, self.filtered_points_df):
sel_point = currPoint
logging.debug("Setting new trip start point %s with idx %s" % (sel_point, sel_point.idx))

with ect.Timer() as t_loop:
for idx, row in self.filtered_points_df.iterrows():
currPoint = ad.AttrDict(row)
currPoint.update({"idx": idx})
logging.debug("-" * 30 + str(currPoint.fmt_time) + "-" * 30)

if curr_trip_start_point is None:
logging.debug("Appending currPoint because the current start point is None")
# segmentation_points.append(currPoint)

if just_ended:
with ect.Timer() as t_continue_just_ended:
continue_flag = self.continue_just_ended(idx, currPoint, self.filtered_points_df)
esds.store_pipeline_time(
user_id,
ecwp.PipelineStages.TRIP_SEGMENTATION.name + "/segment_into_trips_dist/continue_just_ended",
time.time(),
t_continue_just_ended.elapsed
)

if continue_flag:
# We have "processed" the currPoint by deciding to glom it
self.last_ts_processed = currPoint.metadata_write_ts
continue
# else:
sel_point = currPoint
logging.debug("Setting new trip start point %s with idx %s" % (sel_point, sel_point.idx))
with ect.Timer() as t_set_start_point:
curr_trip_start_point = sel_point
just_ended = False

# Since we only end a trip when we start a new trip, this means that
# the last trip that was pushed is ignored. Consider the example of
# 2016-02-22 when I took kids to karate. We arrived shortly after 4pm,
# so during that remote push, a trip end was not detected. And we got
# back home shortly after 5pm, so the trip end was only detected on the
# phone at 6pm. At that time, the following points were pushed:
# ..., 2016-02-22T16:04:02, 2016-02-22T16:49:34, 2016-02-22T16:49:50,
# ..., 2016-02-22T16:57:04
# Then, on the server, while iterating through the points, we detected
# a trip end at 16:04, and a new trip start at 16:49. But we did not
# detect the trip end at 16:57, because we didn't start a new point.
# This has two issues:
# - we won't see this trip until the next trip start, which may be on the next day
# - we won't see this trip at all, because when we run the pipeline the
# next time, we will only look at points from that time onwards. These
# points have been marked as "processed", so they won't even be considered.

# There are multiple potential fixes:
# - we can mark only the completed trips as processed. This will solve (2) above, but not (1)
# - we can mark a trip end based on the fact that we only push data
# when a trip ends, so if we have data, it means that the trip has been
# detected as ended on the phone.
# This seems a bit fragile - what if we start pushing incomplete trip
# data for efficiency reasons? Therefore, we also check to see if there
# is a trip_end_detected in this timeframe after the last point. If so,
# then we end the trip at the last point that we have.
if not just_ended and len(self.transition_df) > 0:
stopped_moving_after_last = self.transition_df[(self.transition_df.ts > currPoint.ts) & (self.transition_df.transition == 2)]
logging.debug("stopped_moving_after_last = %s" % stopped_moving_after_last[["fmt_time", "transition"]])
if len(stopped_moving_after_last) > 0:
logging.debug("Found %d transitions after last point, ending trip..." % len(stopped_moving_after_last))
segmentation_points.append((curr_trip_start_point, currPoint))
self.last_ts_processed = currPoint.metadata_write_ts
else:
logging.debug("Found %d transitions after last point, not ending trip..." % len(stopped_moving_after_last))
esds.store_pipeline_time(
user_id,
ecwp.PipelineStages.TRIP_SEGMENTATION.name + "/segment_into_trips_dist/set_new_trip_start_point",
time.time(),
t_set_start_point.elapsed
)
just_ended = False
else:
with ect.Timer() as t_process_trip:
# Using .loc here causes problems if we have filtered out some points and so the index is non-consecutive.
# Using .iloc just ends up including points after this one.
# So we reset_index upstream and use it here.
last10Points_df = self.filtered_points_df.iloc[
max(idx - self.point_threshold, curr_trip_start_point.idx):idx + 1
]
lastPoint = self.find_last_valid_point(idx)
with ect.Timer() as t_has_trip_ended:
trip_ended = self.has_trip_ended(lastPoint, currPoint, timeseries)
esds.store_pipeline_time(
user_id,
ecwp.PipelineStages.TRIP_SEGMENTATION.name + "/segment_into_trips_dist/has_trip_ended",
time.time(),
t_has_trip_ended.elapsed
)

if trip_ended:
with ect.Timer() as t_get_last_trip_end_point:
last_trip_end_point = lastPoint
logging.debug("Appending last_trip_end_point %s with index %s " %
(last_trip_end_point, idx - 1))
segmentation_points.append((curr_trip_start_point, last_trip_end_point))
logging.info("Found trip end at %s" % last_trip_end_point.fmt_time)
# We have processed everything up to the trip end by marking it as a completed trip
self.last_ts_processed = currPoint.metadata_write_ts
esds.store_pipeline_time(
user_id,
ecwp.PipelineStages.TRIP_SEGMENTATION.name + "/segment_into_trips_dist/get_last_trip_end_point",
time.time(),
t_get_last_trip_end_point.elapsed
)

with ect.Timer() as t_handle_trip_end:
just_ended = True
# Now, we have finished processing the previous point as a trip
# end or not. But we still need to process this point by seeing
# whether it should represent a new trip start, or a glom to the
# previous trip
if not self.continue_just_ended(idx, currPoint, self.filtered_points_df):
sel_point = currPoint
logging.debug("Setting new trip start point %s with idx %s" % (sel_point, sel_point.idx))
curr_trip_start_point = sel_point
just_ended = False
esds.store_pipeline_time(
user_id,
ecwp.PipelineStages.TRIP_SEGMENTATION.name + "/segment_into_trips_dist/handle_trip_end",
time.time(),
t_handle_trip_end.elapsed
)
esds.store_pipeline_time(
user_id,
ecwp.PipelineStages.TRIP_SEGMENTATION.name + "/segment_into_trips_dist/loop",
time.time(),
t_loop.elapsed
)

with ect.Timer() as t_post_loop:
# Since we only end a trip when we start a new trip, this means that
# the last trip that was pushed is ignored. Consider the example of
# 2016-02-22 when I took kids to karate. We arrived shortly after 4pm,
# so during that remote push, a trip end was not detected. And we got
# back home shortly after 5pm, so the trip end was only detected on the
# phone at 6pm. At that time, the following points were pushed:
# ..., 2016-02-22T16:04:02, 2016-02-22T16:49:34, 2016-02-22T16:49:50,
# ..., 2016-02-22T16:57:04
# Then, on the server, while iterating through the points, we detected
# a trip end at 16:04, and a new trip start at 16:49. But we did not
# detect the trip end at 16:57, because we didn't start a new point.
# This has two issues:
# - we won't see this trip until the next trip start, which may be on the next day
# - we won't see this trip at all, because when we run the pipeline the
# next time, we will only look at points from that time onwards. These
# points have been marked as "processed", so they won't even be considered.

# There are multiple potential fixes:
# - we can mark only the completed trips as processed. This will solve (2) above, but not (1)
# - we can mark a trip end based on the fact that we only push data
# when a trip ends, so if we have data, it means that the trip has been
# detected as ended on the phone.
# This seems a bit fragile - what if we start pushing incomplete trip
# data for efficiency reasons? Therefore, we also check to see if there
# is a trip_end_detected in this timeframe after the last point. If so,
# then we end the trip at the last point that we have.
if not just_ended and len(self.transition_df) > 0:
with ect.Timer() as t_check_transitions:
stopped_moving_after_last = self.transition_df[
(self.transition_df.ts > currPoint.ts) & (self.transition_df.transition == 2)
]
logging.debug("stopped_moving_after_last = %s" % stopped_moving_after_last[["fmt_time", "transition"]])
if len(stopped_moving_after_last) > 0:
logging.debug("Found %d transitions after last point, ending trip..." % len(stopped_moving_after_last))
segmentation_points.append((curr_trip_start_point, currPoint))
self.last_ts_processed = currPoint.metadata_write_ts
else:
logging.debug("Found %d transitions after last point, not ending trip..." % len(stopped_moving_after_last))
esds.store_pipeline_time(
user_id,
ecwp.PipelineStages.TRIP_SEGMENTATION.name + "/segment_into_trips_dist/check_transitions_post_loop",
time.time(),
t_check_transitions.elapsed
)
esds.store_pipeline_time(
user_id,
ecwp.PipelineStages.TRIP_SEGMENTATION.name + "/segment_into_trips_dist/post_loop",
time.time(),
t_post_loop.elapsed
)

return segmentation_points

def has_trip_ended(self, lastPoint, currPoint, timeseries):
Expand Down

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