5,691 research outputs found
Virtual-to-Real-World Transfer Learning for Robots on Wilderness Trails
Robots hold promise in many scenarios involving outdoor use, such as
search-and-rescue, wildlife management, and collecting data to improve
environment, climate, and weather forecasting. However, autonomous navigation
of outdoor trails remains a challenging problem. Recent work has sought to
address this issue using deep learning. Although this approach has achieved
state-of-the-art results, the deep learning paradigm may be limited due to a
reliance on large amounts of annotated training data. Collecting and curating
training datasets may not be feasible or practical in many situations,
especially as trail conditions may change due to seasonal weather variations,
storms, and natural erosion. In this paper, we explore an approach to address
this issue through virtual-to-real-world transfer learning using a variety of
deep learning models trained to classify the direction of a trail in an image.
Our approach utilizes synthetic data gathered from virtual environments for
model training, bypassing the need to collect a large amount of real images of
the outdoors. We validate our approach in three main ways. First, we
demonstrate that our models achieve classification accuracies upwards of 95% on
our synthetic data set. Next, we utilize our classification models in the
control system of a simulated robot to demonstrate feasibility. Finally, we
evaluate our models on real-world trail data and demonstrate the potential of
virtual-to-real-world transfer learning.Comment: iROS 201
D\'evissage for periodic cyclic homology of complete intersections
We prove that the d\'evissage property holds for periodic cyclic homology for
a local complete intersection embedding into a smooth scheme. As a consequence,
we show that the complexified topological Chern character maps for the bounded
derived category and singularity category of a local complete intersection are
isomorphisms, proving new cases of the Lattice Conjecture in noncommutative
Hodge theory.Comment: 14 page
Idempotent completions of equivariant matrix factorization categories
We prove that equivariant matrix factorization categories associated to
henselian local hypersurface rings are idempotent complete, generalizing a
result of Dyckerhoff in the non-equivariant case.Comment: 6 pages. To appear in the Journal of Algebr
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