5,231 research outputs found
Predicting the Silent Majority on Graphs: Knowledge Transferable Graph Neural Network
Graphs consisting of vocal nodes ("the vocal minority") and silent nodes
("the silent majority"), namely VS-Graph, are ubiquitous in the real world. The
vocal nodes tend to have abundant features and labels. In contrast, silent
nodes only have incomplete features and rare labels, e.g., the description and
political tendency of politicians (vocal) are abundant while not for ordinary
people (silent) on the twitter's social network. Predicting the silent majority
remains a crucial yet challenging problem. However, most existing
message-passing based GNNs assume that all nodes belong to the same domain,
without considering the missing features and distribution-shift between
domains, leading to poor ability to deal with VS-Graph. To combat the above
challenges, we propose Knowledge Transferable Graph Neural Network (KT-GNN),
which models distribution shifts during message passing and representation
learning by transferring knowledge from vocal nodes to silent nodes.
Specifically, we design the domain-adapted "feature completion and message
passing mechanism" for node representation learning while preserving domain
difference. And a knowledge transferable classifier based on KL-divergence is
followed. Comprehensive experiments on real-world scenarios (i.e., company
financial risk assessment and political elections) demonstrate the superior
performance of our method. Our source code has been open sourced.Comment: Paper was accepted by WWW202
Potential of Constraining Propagation Parameters of Galactic Cosmic Rays with the High Energy cosmic-Radiation Detection facility onboard China's Space Station
Precise measurements of the spectra of secondary and primary cosmic rays are
crucial for understanding the origin and propagation of those energetic
particles. The High Energy cosmic-Radiation Detection (HERD) facility onboard
China`s Space Station, which is expected to operate in 2027, will push the
direct measurements of cosmic ray fluxes precisely up to PeV energies. In this
work, we investigate the potential of HERD on studying the propagation of
cosmic rays using the measurements of boron, carbon, and oxygen spectra. We
find that, compared with the current results, the new HERD measurements can
improve the accuracy of the propagation parameters by 8\% to 40\%. The
constraints on the injection spectra at high energies will also be improved.Comment: 10 pages, 4 figure
2-Fluoro-N′-(2-hydroxybenzylidene)benzohydrazide
In the title compound, C14H11FN2O2, an intramolecular O—H⋯N hydrogen bond influences the molecular conformation; the two benzene rings form a dihedral angle of 18.4 (3)°. The F atom is disordered over two positions in a 0.717 (5):0.283 (5) ratio. In the crystal, intermolecular N—H⋯O hydrogen bonds link the molecules into chains extending along the c axis
2-Fluoro-N′-(2-methoxybenzylidene)benzohydrazide
The molecule of the title compound, C15H13FN2O2, exists in a trans configuration with respect to the methylidene unit. The two benzene rings form a dihedral angle of of 64.7 (2)°. In the crystal, molecules are linked through N—H⋯O hydrogen bonds into chains propagating along the c axis
Erchen Decoction Prevents High-Fat Diet Induced Metabolic Disorders in C57BL/6 Mice
Erchen decoction (ECD) is a traditional Chinese medicine prescription, which is used in the treatment of obesity, hyperlipidemia, fatty liver, diabetes, hypertension, and other diseases caused by retention of phlegm dampness. In this study we investigated the potential mechanism of ECD, using metabolism-disabled mice induced by high-fat diet. Body weight and abdominal circumference were detected. OGTT was measured by means of collecting blood samples from the tail vein. Blood lipid levels and insulin were measured using biochemical assay kit. Real-time PCR was used to measure the CDKAL1 gene expression and western blot was used to measure the protein expression. Through the research, it was found that ECD showed markedly lower body weight and abdominal circumference than those in the HFD group. Consistently, we observed that ECD significantly improved glucose tolerance, promoted the secretion of insulin and decreased the level of TG, TC level. Meanwhile, we observed significantly increased CDKAL1 mRNA and protein level in the ECD group. Therefore, we speculate that the potential molecular mechanism of ECD is to promote the CDKAL1 expression, ameliorate islet cell function, and raise insulin levels to regulate the metabolic disorder
Experimental verification of the steering ellipsoid zoo via two-qubit states
Quantum steering ellipsoid visualizes the set of all qubit states that can be
steered by measuring on another correlated qubit in the Bloch picture. Together
with local reduced states, it provides a faithful geometric characterization of
the underlying two-qubit state so that almost all nonclassical state features
can be reflected in its geometric properties. Consequently, the various types
of quantum ellipsoids with different geometric properties form an ellipsoid
zoo, which, in this work, is experimentally verified via measurements on many
polarization-path photonic states. By generating two-qubit states with high
fidelity, the corresponding ellipsoids are constructed to certify the presence
of entanglement, one-way Einstein-Podolsky-Rosen steering, discord, and
steering incompleteness. It is also experimentally verified that the steering
ellipsoid can be reconstructed from using the twelve vertices of the
icosahedron as measurement directions. Our results aid progress in applying the
quantum steering ellipsoid to reveal nonclassical features of the multi-qubit
system
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