236,462 research outputs found
Grand Challenge: Real-time Destination and ETA Prediction for Maritime Traffic
In this paper, we present our approach for solving the DEBS Grand Challenge
2018. The challenge asks to provide a prediction for (i) a destination and the
(ii) arrival time of ships in a streaming-fashion using Geo-spatial data in the
maritime context. Novel aspects of our approach include the use of ensemble
learning based on Random Forest, Gradient Boosting Decision Trees (GBDT),
XGBoost Trees and Extremely Randomized Trees (ERT) in order to provide a
prediction for a destination while for the arrival time, we propose the use of
Feed-forward Neural Networks. In our evaluation, we were able to achieve an
accuracy of 97% for the port destination classification problem and 90% (in
mins) for the ETA prediction
Guiding Ebola Patients to Suitable Health Facilities: An SMS-based Approach
We propose to utilize mobile phone technology as a vehicle for people to
report their symptoms and to receive immediate feedback about the health
services readily available, and for predicting spatial disease outbreak risk.
Once symptoms are extracted from the patients text message, they undergo
complex classification, pattern matching and prediction to recommend the
nearest suitable health service. The added benefit of this approach is that it
enables health care facilities to anticipate arrival of new potential Ebola
cases
Improvements of the shock arrival times at the Earth model STOA
Prediction of the shocks' arrival times (SATs) at the Earth is very important
for space weather forecast. There is a well-known SAT model, STOA, which is
widely used in the space weather forecast. However, the shock transit time from
STOA model usually has a relative large error compared to the real
measurements. In addition, STOA tends to yield too much `yes' prediction, which
causes a large number of false alarms. Therefore, in this work, we work on the
modification of STOA model. First, we give a new method to calculate the shock
transit time by modifying the way to use the solar wind speed in STOA model.
Second, we develop new criteria for deciding whether the shock will arrive at
the Earth with the help of the sunspot numbers and the angle distances of the
flare events. It is shown that our work can improve the SATs prediction
significantly, especially the prediction of flare events without shocks
arriving at the Earth.Comment: Submitted to JG
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