Browsing SOE - Scholarly Publications by Author "Nasr, George E."

Now showing items 1-4 of 4

BUC algorithm for iceberg cubes

Nasr, George E.; Badr, Celine (2017-12-07)

The Iceberg-Cube problem restricts the computation of the data cube to only those group-by partitions satisfying a minimum threshold condition defined on a specified measure. In this paper, we implement the Bottom-Up ...
Compensation of axle-generator errors due to wheel slip and slide

Saab, Samer S.; Nasr, George E.; Badr, Elie A. (2016-02-23)

Significant errors of train axle generators (tachometers) are due to wheel slip and slide. An algorithm is designed to compensate for these errors. The algorithm identifies the wheel slip and slide by examining the variation ...
Predicting business cycle turning points with neural networks in an information-poor economy

Nasr, George E.; Dibeh, Ghassan; Achkar, Antoine (Society For Computer Simulation, 2017-08-25)

A feedforward neural network model is used to forecast turning points in the business cycle of postwar Lebanon. The NN has as inputs seven indicators of economic activity and as output the probability of a recession. The ...
Sensitivity of discrete-time Kalman filter to statistical modeling errors

Saab, Samer S.; Nasr, George E. (2016-02-23)

The optimum filtering results of Kalman filtering for linear dynamic systems require an exact knowledge of the process noise covariance matrix Qk, the measurement noise covariance matrix Rk and the initial error covariance ...

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