#trajectories

2025-08-22

Sehr cool, @obtusatum erklärt wie man #ADSB über längere Zeit harvestet und was man da #datamining für spannende Einblicke bekommen kann 🕵️
media.ccc.de/v/why2025-242-eye

#aviation #journalism #why2025 #gis #trajectories

Inspiration ForumInspirationForum@zirk.us
2025-07-15

📢 OPEN CALL: join the 2025/26 IF Lab!
The IF Lab is our international research lab focused on connecting artists 🎨 & scientists 🔬 in co-creative projects across disciplines (link in bio 🔗). Each edition explores a different global theme. The 2025/26 theme explores"trajectories" as movements, data, and disruptions. (The IF Lab is powered by the Ji.hlava IDFF, Kersnikova & Sensorium).

#InspirationForum #JiHlavaIDFF #art #science #multimedia #research #media #collaboration #trajectories #IFLab

A poster with abstract blue shapes on a black background. Text reads: “Inspiration Forum Lab* 2025/26 TRAJECTORIES.” Below: “* Interdisciplinary research program for artists and researches.” At the bottom: “Open call.” Along the right side: “Organized by Jihlava IDFF, Kersnikova, Sensorium & Display.”A poster with abstract blue shapes on a black background. Text reads: “Inspiration Forum Lab* 2025/26 TRAJEKTORIE.” Below: “* Interdisciplinární program propojující umění a vědu.” At the bottom: “Open call.” Along the right side: “Organizují Jihlava IDFF, Kersnikova, Sensorium & Display.”Two visitors– a man in a black short and a woman in a blue dress– sit on a bench at the IF Lab exhibition 2024/25 and watch visual multimedia projects on screens before them.A woman in an off-white jumpsuit gives a welcoming speech to a gathering of visitors at the IF Lab exhibit 2024/25. The audience appears captivated by her speech. She stands next to a woman in a black top and trousers who has a service dog on a leash in front of her.
2024-08-11

'Learning from many trajectories', by Stephen Tu, Roy Frostig, Mahdi Soltanolkotabi.

jmlr.org/papers/v25/23-1145.ht

#trajectories #trajectory #supervised

Khurram Wadee ✅mkwadee@mastodon.org.uk
2024-07-25

Just messing about a bit. Here is the famous #LorenzAttractor plotted using #WxMaxima. The three #trajectories, shown in red, green and blue are for three fairly nearby #InitialConditions.

#DynamicalSystems #ChaoticAttractors #StrangeAttractors #NumericalSolutions #Mathematics #AppliedMathematics #CCBYSA #FreeSoftware

Projection of the Lorenz Attractor shown in 3D phase space.
2024-05-25

More #transportation research using #MovingPandas 🤩

Golze, J., & Sester, M. (2024). Determining user specific #semantics of locations extracted from #TrajectoryData. Transportation Research Procedia, 78, 215-221. - "stop points are extracted from the GPS #trajectories using the #Python framework MovingPandas"

sciencedirect.com/science/arti

2024-02-08

Вспомнил выставку «Свиблова говно — Гельман говно...» и тут — бац! — подумал, что Авдей Тер-Оганьян с Маратом Гельманом с тех пор поменялись местами. #recollections #trajectories #castling #AvdeyTerOganyan #ZoyaCherkasskyNnadi #MaratGuelman #contemporaryart #exhibitions #Winzavod #2000s

Anita Graser 🇪🇺🇺🇦🇬🇪underdarkGIS@fosstodon.org
2023-11-07

#MobilityDB is an #opensource data management and analytics platform for #MobilityData (github.com/MobilityDB/Mobility). Its core function is to efficiently store and query #mobility tracks, such as vehicle #GPS #trajectories. It implements the #OGC #MovingFeatures specification. MobilityDB is engineered from #PostgreSQL and #PostGIS, providing #spatiotemporal #DataManagement via #SQL

More in Esteban's talk on #PostGISDay
crunchydata.com/community/even

#GISChat #OSGeo

ᛕᎥᕼᗷᗴᖇᑎᗴ丅ᎥᑕᔕKihbernetics@qoto.org
2023-09-04

The #purpose of invoking the notion of “purpose” is to emphasize the irrelevance of the #trajectories traced by such a system en route from an arbitrary initial #state to its #goal. In a synthesized system whose inner workings are known, this irrelevance has no significance. This irrelevance becomes highly significant, however when the analytic problem, the machine identification problem, cannot be solved, because, for instance, it is trans-computational in the sense that with known algorithms the number of elementary computations exceeds the age of the universe expressed in nanoseconds.

From #H_v_Foerster’s definition of CYBERNETICS in the Encyclopedia of Artificial Intelligence, Wiley, 1987, as presented in:

apps.dtic.mil/sti/tr/pdf/ADA17

The Mental ElfMental_Elf@masto.ai
2023-08-01

Is persistent anxiety and depression in childhood a one-way road to adverse outcomes in adulthood? nationalelfservice.net/?p=1730

In her latest blog, Laura Hankey summarises a longitudinal study using ALSPAC data that explored associations between anxiety, depression, and comorbid anxiety/depression in childhood and adverse outcomes in young adulthood.

#YouthMentalHealth #Anxiety #Depression #Childhood #Adulthood #Trajectories

2023-07-18

The backward #Trajectories for #Sicily clearly show how the air is trapped in the broad circulation of the anticyclone, descending as if in a swirl and heating.

#Heatwave
#Heatdome

Anita Graser 🇪🇺🇺🇦🇬🇪underdarkGIS@fosstodon.org
2023-07-06

"The raw #GPS coordinates and their timestamps were processed to detect individual #trajectories (trips) for each battery using @movingpandas

The individual trajectories were split between stopping points, which were detected when the coordinates of the #batteries remained within a diameter of 200 m for at least 5 min

For each detected trip, the start time, end time, trip duration, trip distance, and average trip speed were determined and recorded for further analysis

#MobilityAnalytics

Anita Graser 🇪🇺🇺🇦🇬🇪underdarkGIS@fosstodon.org
2023-06-02

🎉 Finally, the first release of #MobilityDB for PostGIS :postgresql: on #windows

#PostGIS 3.3.3 Bundle for #Windows is now available on application
stackbuilder and #OSGeo website.
Details of what's included are listed on:
postgis.net/documentation/gett

For more about #MobilityAnalytics in #SQL visit mobilitydb.com

Huge thanks to @reginaobe for making this happen

#Opensource #mobility #postgres #PostgreSQL #fcd #ais #trajectories

ᛕᎥᕼᗷᗴᖇᑎᗴ丅ᎥᑕᔕKihbernetics@qoto.org
2023-05-22

@Pat

I’ll give you that you may have a #structure as a #record of how one or more (finite number of) variables change in time (#trajectories) describing some observed behavior, but this is not what Wolfram’s “pyramids” are. They look more like inverted sedimentation structures.

Also, as far as I understand cosmology, all the “pixels” in the expanding universe were there from the beginning. The expanding universe is not creating any new pixels as Wolfram’s automatons do.

Published papers at TMLRtmlrpub@sigmoid.social
2023-03-09

Learning Energy Conserving Dynamics Efficiently with Hamiltonian Gaussian Processes

Magnus Ross, Markus Heinonen

openreview.net/forum?id=DHEZuK

#hamiltonian #trajectories #gaussian

Int J GIScienceijgis@fediscience.org
2023-02-23

New paper: Detecting spatiotemporal propagation patterns of traffic congestion from fine-grained vehicle trajectory data by Xiong et al. #ijgis #trajectories #GPS
tandfonline.com/doi/full/10.10

Int J GIScienceijgis@fediscience.org
2023-02-15

New paper: Assessing compression algorithms to improve the efficiency of clustering analysis on AIS vessel trajectories by Dais Ferreira M et al.

tandfonline.com/doi/full/10.10

#ijgis #AIS #trajectories #MovementAnalytics

Published papers at TMLRtmlrpub@sigmoid.social
2023-02-05

TITRATED: Learned Human Driving Behavior without Infractions via Amortized Inference

Vasileios Lioutas, Adam Scibior, Frank Wood

openreview.net/forum?id=M8D5iZ

#driving #trajectories #autonomous

Anita Graser 🇪🇺🇺🇦🇬🇪underdarkGIS@fosstodon.org
2023-01-09

TIL about #ReconTraj4Drones: A Framework for the Reconstruction and #SemanticModeling of #UAV #Trajectories based on #MovingPandas mdpi.com/2076-3417/13/1/670

Still have to read the paper but it's great to know that @movingpandas is useful for others

#GIScience #GISChat #OpenSource #ScientificSoftware

Tero Keski-Valkamatero@rukii.net
2023-01-01

Many years ago when #OpenStreetMap was a young project, most of the #map was empty. I collected many #GPS #trajectories and mapped a large portion of my original hometown, #Kurikka, and many other places in #Finland.
Nowadays practically all the streets are there and mapped, but at the start there was nothing.

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