900 research outputs found
MC-NN: An End-to-End Multi-Channel Neural Network Approach for Predicting Influenza A Virus Hosts and Antigenic Types
Influenza poses a significant threat to public health, particularly among the
elderly, young children, and people with underlying dis-eases. The
manifestation of severe conditions, such as pneumonia, highlights the
importance of preventing the spread of influenza. An accurate and
cost-effective prediction of the host and antigenic sub-types of influenza A
viruses is essential to addressing this issue, particularly in
resource-constrained regions. In this study, we propose a multi-channel neural
network model to predict the host and antigenic subtypes of influenza A viruses
from hemagglutinin and neuraminidase protein sequences. Our model was trained
on a comprehensive data set of complete protein sequences and evaluated on
various test data sets of complete and incomplete sequences. The results
demonstrate the potential and practicality of using multi-channel neural
networks in predicting the host and antigenic subtypes of influenza A viruses
from both full and partial protein sequences.Comment: Accepted version submitted to the SN Computer Science; Published in
the SN Computer Science 202
DISPATCHING AND CONFLICT-FREE ROUTING OF VEHICLES IN NEW CONCEPTUAL AUTOMATED CONTAINER TERMINALS
Ph.DDOCTOR OF PHILOSOPH
Oxidation Analyses of Massive Air Ingress Accident of HTR-PM
The double-ended guillotine break (DEGB) of the horizontal coaxial gas duct accident is a serious air ingress accident of the high temperature gas-cooled reactor pebble-bed module (HTR-PM). Because the graphite is widely used as the structure material and the fuel element matrix of HTR-PM, the oxidation analyses of this severe air ingress accident have got enough attention in the safety analyses of the HTR-PM. The DEGB of the horizontal coaxial gas duct accident is calculated by using the TINTE code in this paper. The results show that the maximum local oxidation of the matrix graphite of spherical fuel elements in the core will firstly reach 3.75⁎104 mol/m3 at about 120 h, which means that only the outer 5 mm fuel-free zone of matrix graphite will be oxidized out. Even at 150 h, the maximum local weight loss ratio of the nuclear grade graphite in the bottom reflectors is only 0.26. Besides, there is enough time to carry out some countermeasures to stop the air ingress during several days. Therefore, the nuclear grade graphite of the bottom reflectors will not be fractured in the DEGB of the horizontal coaxial gas duct accident and the integrity of the HTR-PM can be guaranteed
Autoencoder with Group-based Decoder and Multi-task Optimization for Anomalous Sound Detection
In industry, machine anomalous sound detection (ASD) is in great demand.
However, collecting enough abnormal samples is difficult due to the high cost,
which boosts the rapid development of unsupervised ASD algorithms. Autoencoder
(AE) based methods have been widely used for unsupervised ASD, but suffer from
problems including 'shortcut', poor anti-noise ability and sub-optimal quality
of features. To address these challenges, we propose a new AE-based framework
termed AEGM. Specifically, we first insert an auxiliary classifier into AE to
enhance ASD in a multi-task learning manner. Then, we design a group-based
decoder structure, accompanied by an adaptive loss function, to endow the model
with domain-specific knowledge. Results on the DCASE 2021 Task 2 development
set show that our methods achieve a relative improvement of 13.11% and 15.20%
respectively in average AUC over the official AE and MobileNetV2 across test
sets of seven machines.Comment: Submitted to the 2024 IEEE International Conference on Acoustics,
Speech, and Signal Processing (ICASSP 2024
Phonetic-assisted Multi-Target Units Modeling for Improving Conformer-Transducer ASR system
Exploiting effective target modeling units is very important and has always
been a concern in end-to-end automatic speech recognition (ASR). In this work,
we propose a phonetic-assisted multi-target units (PMU) modeling approach, to
enhance the Conformer-Transducer ASR system in a progressive representation
learning manner. Specifically, PMU first uses the pronunciation-assisted
subword modeling (PASM) and byte pair encoding (BPE) to produce
phonetic-induced and text-induced target units separately; Then, three new
frameworks are investigated to enhance the acoustic encoder, including a basic
PMU, a paraCTC and a pcaCTC, they integrate the PASM and BPE units at different
levels for CTC and transducer multi-task training. Experiments on both
LibriSpeech and accented ASR tasks show that, the proposed PMU significantly
outperforms the conventional BPE, it reduces the WER of LibriSpeech clean,
other, and six accented ASR testsets by relative 12.7%, 6.0% and 7.7%,
respectively.Comment: 5 pages, 1 figures, submitted to ICASSP 202
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