319 research outputs found
Relation Structure-Aware Heterogeneous Information Network Embedding
Heterogeneous information network (HIN) embedding aims to embed multiple
types of nodes into a low-dimensional space. Although most existing HIN
embedding methods consider heterogeneous relations in HINs, they usually employ
one single model for all relations without distinction, which inevitably
restricts the capability of network embedding. In this paper, we take the
structural characteristics of heterogeneous relations into consideration and
propose a novel Relation structure-aware Heterogeneous Information Network
Embedding model (RHINE). By exploring the real-world networks with thorough
mathematical analysis, we present two structure-related measures which can
consistently distinguish heterogeneous relations into two categories:
Affiliation Relations (ARs) and Interaction Relations (IRs). To respect the
distinctive characteristics of relations, in our RHINE, we propose different
models specifically tailored to handle ARs and IRs, which can better capture
the structures and semantics of the networks. At last, we combine and optimize
these models in a unified and elegant manner. Extensive experiments on three
real-world datasets demonstrate that our model significantly outperforms the
state-of-the-art methods in various tasks, including node clustering, link
prediction, and node classification
Semiconductor Defect Pattern Classification by Self-Proliferation-and-Attention Neural Network
Semiconductor manufacturing is on the cusp of a revolution: the Internet of
Things (IoT). With IoT we can connect all the equipment and feed information
back to the factory so that quality issues can be detected. In this situation,
more and more edge devices are used in wafer inspection equipment. This edge
device must have the ability to quickly detect defects. Therefore, how to
develop a high-efficiency architecture for automatic defect classification to
be suitable for edge devices is the primary task. In this paper, we present a
novel architecture that can perform defect classification in a more efficient
way. The first function is self-proliferation, using a series of linear
transformations to generate more feature maps at a cheaper cost. The second
function is self-attention, capturing the long-range dependencies of feature
map by the channel-wise and spatial-wise attention mechanism. We named this
method as self-proliferation-and-attention neural network. This method has been
successfully applied to various defect pattern classification tasks. Compared
with other latest methods, SP&A-Net has higher accuracy and lower computation
cost in many defect inspection tasks
Recommended from our members
Neutrophil Spontaneous Death Is Mediated by Down-Regulation of Autocrine Signaling through GPCR, PI3K, ROS, and actin
Neutrophil spontaneous apoptosis plays a crucial role in neutrophil homeostasis and the resolution of inflammation. We previously established Akt deactivation as a key mediator of this tightly regulated cellular death program. Nevertheless, the molecular mechanisms governing the diminished Akt activation were not characterized. Here, we report that Akt deactivation during the course of neutrophil spontaneous death was a result of reduced PtdIns(3,4,5)P3 level. The phosphatidylinositol lipid kinase activity of , but not class IA PI3Ks, was significantly reduced during neutrophil death. The production of PtdIns(3,4,5)P3 in apoptotic neutrophils was mainly maintained by autocrinely released chemokines that elicited activation via G protein–coupled receptors. Unlike in other cell types, serum-derived growth factors did not provide any survival advantage in neutrophils. , but not class IA PI3Ks, was negatively regulated by gradually accumulated ROS in apoptotic neutrophils, which suppressed activity by inhibiting an actin-mediated positive feedback loop. Taken together, these results provide insight into the mechanism of neutrophil spontaneous death and reveal a cellular pathway that regulates PtdIns(3,4,5)P3/Akt in neutrophils
Uniformly Strong Persistence for a Delayed Predator-Prey Model
An asymptotically periodic predator-prey model with time delay is investigated.
Some sufficient conditions for the uniformly strong persistence of the system are obtained. Our result is
an important complementarity to the earlier results
An Impulsive Three-Species Model with Square Root Functional Response and Mutual Interference of Predator
An impulsive two-prey and one-predator model with square root functional responses, mutual interference, and integrated pest management is constructed. By using techniques of impulsive perturbations, comparison theorem, and Floquet theory, the existence and global asymptotic stability of prey-eradication periodic solution are investigated. We use some methods and sufficient conditions to prove the permanence of the system which involve multiple Lyapunov functions and differential comparison theorem. Numerical simulations are given to portray the complex behaviors of this system. Finally, we analyze the biological meanings of these results and give some suggestions for feasible control strategies
- …