5 research outputs found
Automated COVID-19 CT Image Classification using Multi-head Channel Attention in Deep CNN
The rapid spread of COVID-19 has necessitated efficient and accurate
diagnostic methods. Computed Tomography (CT) scan images have emerged as a
valuable tool for detecting the disease. In this article, we present a novel
deep learning approach for automated COVID-19 CT scan classification where a
modified Xception model is proposed which incorporates a newly designed channel
attention mechanism and weighted global average pooling to enhance feature
extraction thereby improving classification accuracy. The channel attention
module selectively focuses on informative regions within each channel, enabling
the model to learn discriminative features for COVID-19 detection. Experiments
on a widely used COVID-19 CT scan dataset demonstrate a very good accuracy of
96.99% and show its superiority to other state-of-the-art techniques. This
research can contribute to the ongoing efforts in using artificial intelligence
to combat current and future pandemics and can offer promising and timely
solutions for efficient medical image analysis tasks
Exploring IoT for real-time CO2 monitoring and analysis
As a part of this project, we have developed an IoT-based instrument
utilizing the NODE MCU-ESP8266 module, MQ135 gas sensor, and DHT-11 sensor for
measuring CO levels in parts per million (ppm), temperature, and humidity.
The escalating CO levels worldwide necessitate constant monitoring and
analysis to comprehend the implications for human health, safety, energy
efficiency, and environmental well-being. Thus, an efficient and cost-effective
solution is imperative to measure and transmit data for statistical analysis
and storage. The instrument offers real-time monitoring, enabling a
comprehensive understanding of indoor environmental conditions. By providing
valuable insights, it facilitates the implementation of measures to ensure
health and safety, optimize energy efficiency, and promote effective
environmental monitoring. This scientific endeavor aims to contribute to the
growing body of knowledge surrounding CO levels, temperature, and humidity,
fostering sustainable practices and informed decision-makingComment: 9 pages, 7 figure
An Interactive Knowledge-based Multi-objective Evolutionary Algorithm Framework for Practical Optimization Problems
Experienced users often have useful knowledge and intuition in solving
real-world optimization problems. User knowledge can be formulated as
inter-variable relationships to assist an optimization algorithm in finding
good solutions faster. Such inter-variable interactions can also be
automatically learned from high-performing solutions discovered at intermediate
iterations in an optimization run - a process called innovization. These
relations, if vetted by the users, can be enforced among newly generated
solutions to steer the optimization algorithm towards practically promising
regions in the search space. Challenges arise for large-scale problems where
the number of such variable relationships may be high. This paper proposes an
interactive knowledge-based evolutionary multi-objective optimization (IK-EMO)
framework that extracts hidden variable-wise relationships as knowledge from
evolving high-performing solutions, shares them with users to receive feedback,
and applies them back to the optimization process to improve its effectiveness.
The knowledge extraction process uses a systematic and elegant graph analysis
method which scales well with number of variables. The working of the proposed
IK-EMO is demonstrated on three large-scale real-world engineering design
problems. The simplicity and elegance of the proposed knowledge extraction
process and achievement of high-performing solutions quickly indicate the power
of the proposed framework. The results presented should motivate further such
interaction-based optimization studies for their routine use in practice.Comment: 15 pages, 10 figures in main document; 6 pages, 6 figures in
supplementary documen