1,333 research outputs found
Cost-Effective HITs for Relative Similarity Comparisons
Similarity comparisons of the form "Is object a more similar to b than to c?"
are useful for computer vision and machine learning applications.
Unfortunately, an embedding of points is specified by triplets,
making collecting every triplet an expensive task. In noticing this difficulty,
other researchers have investigated more intelligent triplet sampling
techniques, but they do not study their effectiveness or their potential
drawbacks. Although it is important to reduce the number of collected triplets,
it is also important to understand how best to display a triplet collection
task to a user. In this work we explore an alternative display for collecting
triplets and analyze the monetary cost and speed of the display. We propose
best practices for creating cost effective human intelligence tasks for
collecting triplets. We show that rather than changing the sampling algorithm,
simple changes to the crowdsourcing UI can lead to much higher quality
embeddings. We also provide a dataset as well as the labels collected from
crowd workers.Comment: 7 pages, 7 figure
FEDERAL PROCEDURE-VENUE-TRANSFER UNDER SECTION 1404(a) TO DISTRICT WHERE VENUE ORIGINALLY WOULD HAVE BEEN IMPROPER
Civil anti-trust actions were properly brought against defendants in the Federal District Court for the District of Delaware. Defendants sought a transfer of the suits to a district court in Texas under section 1404(a) of the Judicial Code, which allows a transfer when requirements of convenience are met to any district where the suit might have been brought Although venue in the Texas District Court would not have been proper when the suits were originally instituted, defendants claimed that their express waiver of improper venue removed the bar to transfer. The district court ruled that it lacked the power to make the transfer. On petition to the court of appeals for a writ of mandamus, held, two judges dissenting, that transfer can be made if the district court feels that it would serve the convenience of parties and witnesses and would be in the interest of justice. Paramount Pictures v. Rodney, (3d Cir. 1950) 186 F. (2d) 111
Silva: PRESIDENTIAL SUCCESSION
A Review of PRESIDENTIAL SUCCESSION. By Ruth C. Silva
The galaxy-halo connection of DESI luminous red galaxies with subhalo abundance matching
We use subhalo abundance and age distribution matching to create
magnitude-limited mock galaxy catalogs at , , and with
-band and micron -band absolute magnitudes and and
colors. From these magnitude-limited mocks we select mock luminous red
galaxy (LRG) samples according to the -based (optical) and
-based (infrared) selection criteria for the LRG sample of the Dark
Energy Spectroscopic Instrument (DESI) Survey. Our models reproduce the number
densities, luminosity functions, color distributions, and projected clustering
of the DESI Legacy Surveys that are the basis for DESI LRG target selection. We
predict the halo occupation statistics of both optical and IR DESI LRGs at
fixed cosmology, and assess the differences between the two LRG samples. We
find that IR-based SHAM modeling represents the differences between the optical
and IR LRG populations better than using the -band, and that age
distribution matching overpredicts the clustering of LRGs, implying that galaxy
color is uncorrelated with halo age in the LRG regime. Both the optical and IR
DESI LRG target selections exclude some of the most luminous galaxies that
would appear to be LRGs based on their position on the red sequence in optical
color-magnitude space. Both selections also yield populations with a
non-trivial LRG-halo connection that does not reach unity for the most massive
halos. We find the IR selection achieves greater completeness ()
than the optical selection across all redshift bins studied.Comment: 20 pages, 14 figures, submitted to Ap
- …