Add the BerlinMOD nine-query three-form parity matrix for NebulaStream#15
Open
estebanzimanyi wants to merge 1 commit into
Open
Add the BerlinMOD nine-query three-form parity matrix for NebulaStream#15estebanzimanyi wants to merge 1 commit into
estebanzimanyi wants to merge 1 commit into
Conversation
estebanzimanyi
force-pushed
the
feat/berlinmod-streaming-forms
branch
from
a5ff0f0 to
6d3f885
Compare
estebanzimanyi
changed the title
… on NebulaStream (33 YAMLs, 27/27 cells) Additive scaffold for the BerlinMOD-9 × 3 streaming-form parity contract on MobilityNebula, sibling to the existing SNCB Q-series and matching the MobilityFlink MobilityDB#3 / MobilityKafka MobilityDB#1 streaming-form definitions. All 27 cells covered: Q1 'which vehicles have appeared' — full (continuous + windowed + snapshot) Q2 'where is vehicle X at time T' — full Q3 'vehicles within 5 km of P' — full Q4 'vehicles inside region R (polygon)'— full Q5 'pairs of vehicles meeting near P' — partial (emit per-vehicle trajectories near P; consumer joins) Q6 'cumulative distance per vehicle' — partial (emit TEMPORAL_SEQUENCE; consumer computes length) Q7 'first passage of vehicle through POI' × {POI1, POI2, POI3} — full (per-POI fan-out) Q8 'vehicles within d of LINESTRING' — full (edwithin_tgeo_geo with LINESTRING geometry) Q9 'distance between X and Y at time T'— partial (emit X and Y trajectories; consumer joins) 18 of 27 cells are FULL (the BerlinMOD-Q semantic is computed entirely inside NebulaStream). 9 cells are PARTIAL — NebulaStream emits the per-window inputs (trajectory, candidate vehicles) and a consumer post-processes for the final BerlinMOD-Q answer. The partial pattern is the natural expression of these queries in NebulaStream's current SQL surface; the path to FULL is documented per-Q in docs/berlinmod-streaming-forms.md (a stream-self-join for Q5/Q9, a temporal_length scalar function for Q6). Form mapping to NebulaStream windows: continuous: SLIDING(time_utc, SIZE 1 SEC, ADVANCE BY 1 SEC) windowed: TUMBLING(time_utc, SIZE 10 SEC) snapshot: TUMBLING(time_utc, SIZE 5 SEC) MEOS-side surface consumed (already exposed by PR MobilityDB#14 + follow-ups): edwithin_tgeo_geo — Q3 (POINT predicate), Q4 (POLYGON, d=0.0), Q5 (POINT predicate), Q7 (per-POI POINT), Q8 (LINESTRING predicate) TEMPORAL_SEQUENCE — Q2 / Q5 / Q6 / Q9 (per-window per-vehicle trajectory) No new MEOS PhysicalFunction classes added; no C++ changes; no SNCB Q-series modifications. All 33 YAMLs are additive in a new Queries/berlinmod/ subdirectory. Add (additions): Queries/berlinmod/q1_{continuous,windowed,snapshot}.yaml (3) Queries/berlinmod/q2_{continuous,windowed,snapshot}.yaml (3) Queries/berlinmod/q3_{continuous,windowed,snapshot}.yaml (3) Queries/berlinmod/q4_{continuous,windowed,snapshot}.yaml (3) Queries/berlinmod/q5_{continuous,windowed,snapshot}.yaml (3, partial) Queries/berlinmod/q6_{continuous,windowed,snapshot}.yaml (3, partial) Queries/berlinmod/q7_poi{1,2,3}_{continuous,windowed,snapshot}.yaml (9, full via fan-out) Queries/berlinmod/q8_{continuous,windowed,snapshot}.yaml (3, LINESTRING predicate) Queries/berlinmod/q9_{continuous,windowed,snapshot}.yaml (3, partial) Input/input_berlinmod.csv (sample data: 3 vehicles × 21 events, 14 simulated seconds) docs/berlinmod-streaming-forms.md Validation: every YAML parses cleanly via python3 yaml.safe_load. Runtime verification gated on the NebulaStream test harness. Coverage: 27 of 27 cells (100 %), with 18 FULL and 9 PARTIAL annotated explicitly per Q. Path to FULL for the 9 PARTIAL cells is one MobilityNebula C++ PhysicalFunction class each (or a NebulaStream upstream stream-self-join), documented in docs/berlinmod-streaming-forms.md.
estebanzimanyi
force-pushed
the
feat/berlinmod-streaming-forms
branch
from
6d3f885 to
395e364
Compare
estebanzimanyi
changed the title
Contributor
|
These are great additions, happy to review when you're ready! |
This was referenced May 21, 2026
marianaGarcez
approved these changes
May 29, 2026
Contributor
marianaGarcez
left a comment
marianaGarcez
left a comment
There was a problem hiding this comment.
This PR looks good and adds new queries. I do not alter the existing code or add functions
estebanzimanyi
changed the title
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Add the BerlinMOD nine-query parity matrix for NebulaStream across the three query forms (instantaneous, sequence, and full streaming), as the reference surface for measuring streaming MEOS parity. Base of the streaming-parity series.