238 research outputs found
Study on creep mechanism of coral sand based on particle breakage evolution law
The time-dependent deformation property of backfill coral sand is of great important to the long-term stability of engineer facilities bulit on reefs and reclaimed land. In order to investigate the long-term deformation behavior, one-dimensional compression creep tests under different constant stresses were carried out for coral sand taken from a reef in the South China Sea by WG type high-pressure consolidation instrument. The test results show that under the action of constant stress, coral sand has a strong deformation timeliness and shows remarkable nonlinear attenuation creep characteristics. The creep of coral sand has obvious stages and has gone through three stages of instantaneous deformation, accelerated deformation and slow deformation phase tending to stability. The relationship of strain-time can be fitted with power function in mathematic. The particle breakage state of any single particle size group of coral sand after creep can be well described by using the two-parameter Weibull distribution function, Weibull parameters a and b have a good exponential relationship with stress, and have a negative linear relation with quantitative index Br of particle breakage, and have a negatively correlated with final total strain. Under the action of low stress level, the main cause of creep deformation is the movement and recombination of particles. At low stress level, the movement and recombination of particles are the main reason of creep deformation, while at high stress level, the slippage and filling pores of broken coral sand particles are the main reason of creep deformation
ELFNet: Evidential Local-global Fusion for Stereo Matching
Although existing stereo matching models have achieved continuous
improvement, they often face issues related to trustworthiness due to the
absence of uncertainty estimation. Additionally, effectively leveraging
multi-scale and multi-view knowledge of stereo pairs remains unexplored. In
this paper, we introduce the \textbf{E}vidential \textbf{L}ocal-global
\textbf{F}usion (ELF) framework for stereo matching, which endows both
uncertainty estimation and confidence-aware fusion with trustworthy heads.
Instead of predicting the disparity map alone, our model estimates an
evidential-based disparity considering both aleatoric and epistemic
uncertainties. With the normal inverse-Gamma distribution as a bridge, the
proposed framework realizes intra evidential fusion of multi-level predictions
and inter evidential fusion between cost-volume-based and transformer-based
stereo matching. Extensive experimental results show that the proposed
framework exploits multi-view information effectively and achieves
state-of-the-art overall performance both on accuracy and cross-domain
generalization.
The codes are available at https://github.com/jimmy19991222/ELFNet.Comment: ICCV 202
X-ray sequence and crystal structure of luffaculin 1, a novel type 1 ribosome-inactivating protein
GW26-e1576 The Association between Frequent Premature Ventricular Contractions and the Left Ventricular Function of Late Pregnant Women
Ensembled CTR Prediction via Knowledge Distillation
Recently, deep learning-based models have been widely studied for
click-through rate (CTR) prediction and lead to improved prediction accuracy in
many industrial applications. However, current research focuses primarily on
building complex network architectures to better capture sophisticated feature
interactions and dynamic user behaviors. The increased model complexity may
slow down online inference and hinder its adoption in real-time applications.
Instead, our work targets at a new model training strategy based on knowledge
distillation (KD). KD is a teacher-student learning framework to transfer
knowledge learned from a teacher model to a student model. The KD strategy not
only allows us to simplify the student model as a vanilla DNN model but also
achieves significant accuracy improvements over the state-of-the-art teacher
models. The benefits thus motivate us to further explore the use of a powerful
ensemble of teachers for more accurate student model training. We also propose
some novel techniques to facilitate ensembled CTR prediction, including teacher
gating and early stopping by distillation loss. We conduct comprehensive
experiments against 12 existing models and across three industrial datasets.
Both offline and online A/B testing results show the effectiveness of our
KD-based training strategy.Comment: Published in CIKM'202
ImmPort, toward repurposing of open access immunological assay data for translational and clinical research
Immunology researchers are beginning to explore the possibilities of reproducibility, reuse and secondary analyses of immunology data. Open-access datasets are being applied in the validation of the methods used in the original studies, leveraging studies for meta-analysis, or generating new hypotheses. To promote these goals, the ImmPort data repository was created for the broader research community to explore the wide spectrum of clinical and basic research data and associated findings. The ImmPort ecosystem consists of four components–Private Data, Shared Data, Data Analysis, and Resources—for data archiving, dissemination, analyses, and reuse. To date, more than 300 studies have been made freely available through the ImmPort Shared Data portal , which allows research data to be repurposed to accelerate the translation of new insights into discoveries
Structural basis of suppression of host translation termination by Moloney Murine Leukemia Virus
Retroviral reverse transcriptase (RT) of Moloney murine leukemia virus (MoMLV) is expressed in the form of a large Gag–Pol precursor protein by suppression of translational termination in which the maximal efficiency of stop codon read-through depends on the interaction between MoMLV RT and peptidyl release factor 1 (eRF1). Here, we report the crystal structure of MoMLV RT in complex with eRF1. The MoMLV RT interacts with the C-terminal domain of eRF1 via its RNase H domain to sterically occlude the binding of peptidyl release factor 3 (eRF3) to eRF1. Promotion of read-through by MoMLV RNase H prevents nonsense-mediated mRNA decay (NMD) of mRNAs. Comparison of our structure with that of HIV RT explains why HIV RT cannot interact with eRF1. Our results provide a mechanistic view of how MoMLV manipulates the host translation termination machinery for the synthesis of its own proteins
Exploiting Counter-Examples for Active Learning with Partial labels
This paper studies a new problem, \emph{active learning with partial labels}
(ALPL). In this setting, an oracle annotates the query samples with partial
labels, relaxing the oracle from the demanding accurate labeling process. To
address ALPL, we first build an intuitive baseline that can be seamlessly
incorporated into existing AL frameworks. Though effective, this baseline is
still susceptible to the \emph{overfitting}, and falls short of the
representative partial-label-based samples during the query process. Drawing
inspiration from human inference in cognitive science, where accurate
inferences can be explicitly derived from \emph{counter-examples} (CEs), our
objective is to leverage this human-like learning pattern to tackle the
\emph{overfitting} while enhancing the process of selecting representative
samples in ALPL. Specifically, we construct CEs by reversing the partial labels
for each instance, and then we propose a simple but effective WorseNet to
directly learn from this complementary pattern. By leveraging the distribution
gap between WorseNet and the predictor, this adversarial evaluation manner
could enhance both the performance of the predictor itself and the sample
selection process, allowing the predictor to capture more accurate patterns in
the data. Experimental results on five real-world datasets and four benchmark
datasets show that our proposed method achieves comprehensive improvements over
ten representative AL frameworks, highlighting the superiority of WorseNet. The
source code will be available at \url{https://github.com/Ferenas/APLL}.Comment: 29 pages, Under revie
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