65 research outputs found
Notes on Cloud computing principles
This letter provides a review of fundamental distributed systems and economic
Cloud computing principles. These principles are frequently deployed in their
respective fields, but their inter-dependencies are often neglected. Given that
Cloud Computing first and foremost is a new business model, a new model to sell
computational resources, the understanding of these concepts is facilitated by
treating them in unison. Here, we review some of the most important concepts
and how they relate to each other
Enhancing Spatiotemporal Traffic Prediction through Urban Human Activity Analysis
Traffic prediction is one of the key elements to ensure the safety and
convenience of citizens. Existing traffic prediction models primarily focus on
deep learning architectures to capture spatial and temporal correlation. They
often overlook the underlying nature of traffic. Specifically, the sensor
networks in most traffic datasets do not accurately represent the actual road
network exploited by vehicles, failing to provide insights into the traffic
patterns in urban activities. To overcome these limitations, we propose an
improved traffic prediction method based on graph convolution deep learning
algorithms. We leverage human activity frequency data from National Household
Travel Survey to enhance the inference capability of a causal relationship
between activity and traffic patterns. Despite making minimal modifications to
the conventional graph convolutional recurrent networks and graph convolutional
transformer architectures, our approach achieves state-of-the-art performance
without introducing excessive computational overhead.Comment: CIKM 202
OCI-Based Group Communication Support in CORBA
Group communication is a useful mechanism guaranteeing consistency among replicated objects. The existing approaches do not allow transparent plug-in of group communication protocols into CORBA. They either require modification of CORBA or OS, or provide no room for incorporating group communication transport protocols into CORBA. We thus propose a generic group communication framework that allows transparent plug-in of various group communication protocols with no modification of existing CORBA. We extend the open communications interface (OCI) to support interoperability, reusability of existing group communication, and independency on ORB and OS. We also define the group communication inter-ORB protocol (GCIOP) as a group communication instantiation of the general inter-ORB protocol (GIOP) that encapsulates underlying group communication protocols. The proposed scheme can be exploited for fault-tolerant CORBA (FT CORBA)
MetaWeather: Few-Shot Weather-Degraded Image Restoration via Degradation Pattern Matching
Real-world vision tasks frequently suffer from the appearance of adverse
weather conditions including rain, fog, snow, and raindrops in captured images.
Recently, several generic methods for restoring weather-degraded images have
been proposed, aiming to remove multiple types of adverse weather effects
present in the images. However, these methods have considered weather as
discrete and mutually exclusive variables, leading to failure in generalizing
to unforeseen weather conditions beyond the scope of the training data, such as
the co-occurrence of rain, fog, and raindrops. To this end, weather-degraded
image restoration models should have flexible adaptability to the current
unknown weather condition to ensure reliable and optimal performance. The
adaptation method should also be able to cope with data scarcity for real-world
adaptation. This paper proposes MetaWeather, a few-shot weather-degraded image
restoration method for arbitrary weather conditions. For this, we devise the
core piece of MetaWeather, coined Degradation Pattern Matching Module (DPMM),
which leverages representations from a few-shot support set by matching
features between input and sample images under new weather conditions. In
addition, we build meta-knowledge with episodic meta-learning on top of our
MetaWeather architecture to provide flexible adaptability. In the meta-testing
phase, we adopt a parameter-efficient fine-tuning method to preserve the
prebuilt knowledge and avoid the overfitting problem. Experiments on the BID
Task II.A dataset show our method achieves the best performance on PSNR and
SSIM compared to state-of-the-art image restoration methods. Code is available
at (TBA).Comment: 12 pages, 6 figure
OCI-Based Group Communication Support in CORBA
Group communication is a useful mechanism guaranteeing consistency among replicated objects. The existing approaches do not allow transparent plug-in of group communication protocols into CORBA. They either require modification of CORBA or OS, or provide no room for incorporating group communication transport protocols into CORBA. We thus propose a generic group communication framework that allows transparent plug-in of various group communication protocols with no modification of existing CORBA. We extend the open communications interface (OCI) to support interoperability, reusability of existing group communication, and independency on ORB and OS. We also define the group communication inter-ORB protocol (GCIOP) as a group communication instantiation of the general inter-ORB protocol (GIOP) that encapsulates underlying group communication protocols. The proposed scheme can be exploited for fault-tolerant CORBA (FT CORBA)
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