[OSGeo-Announce] ACM SIGSPATIAL Cup 2017 CFP

[Jorge Sanz]

The 6th GIS-focused algorithm competition, GISCUP 2017, co-located
with ACM SIGSPATIAL GIS 2017, November 7 - November 10, 2017, Los
Angeles, CA, USA

http://sigspatial2017.sigspatial.org/giscup2017/

This year will be the 6th GIS-focused algorithm competition, GISCUP
2017, co-located with the 2017 ACM SIGSPATIAL GIS conference. ACM
SIGSPATIAL hosts an annual algorithm contest with the goal of
encouraging innovation in a fun way. The winners will be announced at
the ACM SIGSPATIAL GIS conference in November 2017. Contest
participants will submit original computer programs to be evaluated by
the contest organizers on common datasets.

This year’s contest will focus on the growing research area of
trajectory computing. Massive amounts of spatial trajectories are
generated nowadays by smartphones, infrastructure, computer games,
natural phenomena, and many other sources. A trajectory consists of a
time series of locations with the assumption that some sort of
interpolation (often piecewise linear) is reasonable. In this way,
trajectories are one-dimensional geometric objects, but their
representation in computer systems is usually zero-dimensional as a
series of pairs of location and time, for example.

Trajectory similarity is a very basic problem when dealing with this
type of data and many different ways of comparing trajectories have
been proposed. In this challenge, we concentrate on a very intuitive
measure called Fréchet distance with hard computational complexity,
but superior quality in theory and practice.

The Fréchet distance is defined as the minimal length of a leash
connecting a dog on one trajectory with its owner on a second
trajectory, both never moving backwards. For this challenge, the
"true" Fréchet distance shall be used, though teams are free to
exploit the existing approximations including the Discrete Fréchet
distance as they wish. The challenge for this year consists of finding
and combining spatiotemporal indexing schemes with efficient
algorithms for Range Queries in very large databases of trajectories.
The approaches will be evaluated on a multitude of real and synthetic
datasets, a sample datasets can be found on the download page page.

In summary, the key topics that are being addressed in this year’s cup
are the following:

- Spatio-temporal Big Data
- Trajectory Computing
- Computational Geometry
- Indexing and Retrieval in Spatial Computing

The top three teams will be provided with cash and / or other prizes.
In addition to these prizes, the top three teams will be invited to
submit a four page paper for a contest paper session to be held at the
2017 ACM SIGSPATIAL GIS conference. These papers will be subject to
review and acceptance by the contest organizers, but it is expected
that each of the top three teams will have their paper in the
conference proceedings and a ten-minute presentation in the contest
session.

At least one team member of each winning team must register for the
2017 ACM SIGSPATIAL GIS conference.

Important Dates:
---------------

July 30, 2017      Deadline for Submissions
August 17, 2017    Invitation of papers for the best submissions
August 24, 2017    Submission deadline for invited papers

More information about the contest can be found here:

http://sigspatial2017.sigspatial.org/giscup2017/

Contest Chairs:
---------------

Martin Werner, Ludwig-Maximilians-University, martin.werner at ifi.lmu.de
Dev Oliver, ESRI, DOliver at esri.com

Contest Masters:
----------------

To be announced