1,124 research outputs found
Automatic Structural Scene Digitalization
In this paper, we present an automatic system for the analysis and labeling
of structural scenes, floor plan drawings in Computer-aided Design (CAD)
format. The proposed system applies a fusion strategy to detect and recognize
various components of CAD floor plans, such as walls, doors, windows and other
ambiguous assets. Technically, a general rule-based filter parsing method is
fist adopted to extract effective information from the original floor plan.
Then, an image-processing based recovery method is employed to correct
information extracted in the first step. Our proposed method is fully automatic
and real-time. Such analysis system provides high accuracy and is also
evaluated on a public website that, on average, archives more than ten
thousands effective uses per day and reaches a relatively high satisfaction
rate.Comment: paper submitted to PloS On
Neuropeptide-Gated Perception of Appetitive Olfactory Inputs in Drosophila Larvae
SummaryUnderstanding how smell or taste translates into behavior remains challenging. We have developed a behavioral paradigm in Drosophila larvae to investigate reception and processing of appetitive olfactory inputs in higher-order olfactory centers. We found that the brief presentation of appetitive odors caused fed larvae to display impulsive feeding of sugar-rich food. Deficiencies in the signaling of neuropeptide F (NPF), the fly counterpart of neuropeptide Y (NPY), blocked appetitive odor-induced feeding by disrupting dopamine (DA)-mediated higher-order olfactory processing. We have identified a small number of appetitive odor-responsive dopaminergic neurons (DL2) whose activation mimics the behavioral effect of appetitive odor stimulation. Both NPF and DL2 neurons project to the secondary olfactory processing center; NPF and its receptor NPFR1 mediate a gating mechanism for reception of olfactory inputs in DL2 neurons. Our findings suggest that eating for reward value is an ancient behavior and that fly larvae are useful for studying neurobiology and the evolution of olfactory reward-driven behavior
Learning For Predictive Control: A Dual Gaussian Process Approach
An important issue in model-based control design is that an accurate dynamic
model of the system is generally nonlinear, complex, and costly to obtain. This
limits achievable control performance in practice. Gaussian process (GP) based
estimation of system models is an effective tool to learn unknown dynamics
directly from input/output data. However, conventional GP-based control methods
often ignore the computational cost associated with accumulating data during
the operation of the system and how to handle forgetting in continuous
adaption. In this paper, we present a novel Dual Gaussian Process (DGP) based
model predictive control (MPC) strategy that enables efficient use of online
learning based predictive control without the danger of catastrophic
forgetting. The bio-inspired DGP structure is a combination of a long-term GP
and a short-term GP, where the long-term GP is used to keep the learned
knowledge in memory and the short-term GP is employed to rapidly compensate
unknown dynamics during online operation. Furthermore, a novel recursive online
update strategy for the short-term GP is proposed to successively improve the
learnt model during online operation. Effectiveness of the proposed strategy is
demonstrated via numerical simulations.Comment: arXiv admin note: substantial text overlap with arXiv:2112.1166
Study on Employee Satisfaction in Enterprises-- Based on the Empirical Analysis of Ningbo Foreign Trade Enterprises
By improving employee satisfaction and fully mobilize the enthusiasm of the employees improve the core competence of enterprises has become one of the important factors, this article through to ningbo home and foreign trade enterprise employee satisfaction survey, the empirical analysis of the influence factors of employee satisfaction, and puts forward relevant suggestions
StyleInV: A Temporal Style Modulated Inversion Network for Unconditional Video Generation
Unconditional video generation is a challenging task that involves
synthesizing high-quality videos that are both coherent and of extended
duration. To address this challenge, researchers have used pretrained StyleGAN
image generators for high-quality frame synthesis and focused on motion
generator design. The motion generator is trained in an autoregressive manner
using heavy 3D convolutional discriminators to ensure motion coherence during
video generation. In this paper, we introduce a novel motion generator design
that uses a learning-based inversion network for GAN. The encoder in our method
captures rich and smooth priors from encoding images to latents, and given the
latent of an initially generated frame as guidance, our method can generate
smooth future latent by modulating the inversion encoder temporally. Our method
enjoys the advantage of sparse training and naturally constrains the generation
space of our motion generator with the inversion network guided by the initial
frame, eliminating the need for heavy discriminators. Moreover, our method
supports style transfer with simple fine-tuning when the encoder is paired with
a pretrained StyleGAN generator. Extensive experiments conducted on various
benchmarks demonstrate the superiority of our method in generating long and
high-resolution videos with decent single-frame quality and temporal
consistency.Comment: ICCV 2023. Code: https://github.com/johannwyh/StyleInV Project page:
https://www.mmlab-ntu.com/project/styleinv/index.htm
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