4,830 research outputs found
Phase Transition of Degeneracy in Minor-Closed Families
Given an infinite family of graphs and a monotone property
, an (upper) threshold for and is a
"fastest growing" function such that for any sequence over with , where is the random subgraph of such that each
edge remains independently with probability .
In this paper we study the upper threshold for the family of -minor free
graphs and for the graph property of being -degenerate, which is one
fundamental graph property with many applications. Even a constant factor
approximation for the upper threshold for all pairs is expected to be
very difficult by its close connection to a major open question in extremal
graph theory. We determine asymptotically the thresholds (up to a constant
factor) for being -degenerate for a large class of pairs ,
including all graphs of minimum degree at least and all graphs with
no vertex-cover of size at most , and provide lower bounds for the rest of
the pairs of . The results generalize to arbitrary proper minor-closed
families and the properties of being -colorable, being -choosable, or
containing an -regular subgraph, respectively
The Interplay of Reovirus with Autophagy
Autophagy participates in multiple fundamental physiological processes, including survival, differentiation, development, and cellular homeostasis. It eliminates cytoplasmic protein aggregates and damaged organelles by triggering a series of events: sequestering the protein substrates into double-membrane vesicles, fusing the vesicles with lysosomes, and then degrading the autophagic contents. This degradation pathway is also involved in various disorders, for instance, cancers and infectious diseases. This paper provides an overview of modulation of autophagy in the course of reovirus infection and also the interplay of autophagy and reovirus
Alternative Ingredient Recommendation: A Co-occurrence and Ingredient Category Importance Based Approach
As many people will refer to a recipe when cooking, there are several recipe-sharing websites that include lots of recipes and make recipes easier to access than before. However, there is often the case that we could not get all the ingredients listed on the recipe. Prior research on alternative ingredient substitution has built a recommendation system considering the suitability of a recommended ingredient with the remained ingredients. In this paper, in addition to suitability, we also take the diversity of the ingredient categories and the novelty of new combination of ingredients into account. Besides, we combine suitability with novelty as an index, to see whether our method could help find out a new combination of ingredients that is possibly to be a new dish. Our evaluation results show that our proposed method attains a comparable or even better performance on each perspective
Explicit Change Relation Learning for Change Detection in VHR Remote Sensing Images
Change detection has always been a concerned task in the interpretation of
remote sensing images. It is essentially a unique binary classification task
with two inputs, and there is a change relationship between these two inputs.
At present, the mining of change relationship features is usually implicit in
the network architectures that contain single-branch or two-branch encoders.
However, due to the lack of artificial prior design for change relationship
features, these networks cannot learn enough change semantic information and
lose more accurate change detection performance. So we propose a network
architecture NAME for the explicit mining of change relation features. In our
opinion, the change features of change detection should be divided into
pre-changed image features, post-changed image features and change relation
features. In order to fully mine these three kinds of change features, we
propose the triple branch network combining the transformer and convolutional
neural network (CNN) to extract and fuse these change features from two
perspectives of global information and local information, respectively. In
addition, we design the continuous change relation (CCR) branch to further
obtain the continuous and detail change relation features to improve the change
discrimination capability of the model. The experimental results show that our
network performs better, in terms of F1, IoU, and OA, than those of the
existing advanced networks for change detection on four public very
high-resolution (VHR) remote sensing datasets. Our source code is available at
https://github.com/DalongZ/NAME
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