2 research outputs found
Neural network based country wise risk prediction of COVID-19
The recent worldwide outbreak of the novel coronavirus (COVID-19) has opened
up new challenges to the research community. Artificial intelligence (AI)
driven methods can be useful to predict the parameters, risks, and effects of
such an epidemic. Such predictions can be helpful to control and prevent the
spread of such diseases. The main challenges of applying AI is the small volume
of data and the uncertain nature. Here, we propose a shallow long short-term
memory (LSTM) based neural network to predict the risk category of a country.
We have used a Bayesian optimization framework to optimize and automatically
design country-specific networks. The results show that the proposed pipeline
outperforms state-of-the-art methods for data of 180 countries and can be a
useful tool for such risk categorization. We have also experimented with the
trend data and weather data combined for the prediction. The outcome shows that
the weather does not have a significant role. The tool can be used to predict
long-duration outbreak of such an epidemic such that we can take preventive
steps earlie
Topic-based Video Analysis: A Survey
Manual processing of a large volume of video data captured through closed-circuit television is challenging due to various reasons. First, manual analysis is highly time-consuming. Moreover, as surveillance videos are recorded in dynamic conditions such as in the presence of camera motion, varying illumination, or occlusion, conventional supervised learning may not work always. Thus, computer vision-based automatic surveillance scene analysis is carried out in unsupervised ways. Topic modelling is one of the emerging fields used in unsupervised information processing. Topic modelling is used in text analysis, computer vision applications, and other areas involving spatio-temporal data. In this article, we discuss the scope, variations, and applications of topic modelling, particularly focusing on surveillance video analysis. We have provided a methodological survey on existing topic models, their features, underlying representations, characterization, and applications in visual surveillance’s perspective. Important research papers related to topic modelling in visual surveillance have been summarized and critically analyzed in this article