85 citations · 134 across the 6 of their papers we have counts for
7 papers
US Presidential Election 2012 Prediction using Census Corrected Twitter Model
Murphy Choy, Michelle Cheong, Ma Nang Laik +1
US Presidential Election 2012 has been a very tight race between the two key candidates. There were intense battle between the two key candidates. The election reflects the sentime…
A Flexible Mixed Integer Programming framework for Nurse Scheduling
Murphy Choy, Michelle Cheong
In this paper, a nurse-scheduling model is developed using mixed integer programming model. It is deployed to a general care ward to replace and automate the current manual approac…
Intelligent Search Heuristics for Cost Based Scheduling
Murphy Choy, Michelle Cheong
Nurse scheduling is a difficult optimization problem with multiple constraints. There is extensive research in the literature solving the problem using meta-heuristics approaches.…
Modified Entropy Measure for Detection of Association Rules Under Simpson's Paradox Context
Murphy Choy, Cally Claire Ong, Michelle Cheong
The rapid explosion in retail data calls for more effective and efficient discovery of association rules to develop relevant business strategies and rules.Unlike online shopping si…
A Greedy Double Swap Heuristic for Nurse Scheduling
Murphy Choy, Michelle Cheong
One of the key challenges of nurse scheduling problem (NSP) is the number of constraints placed on preparing the timetable, both from the regulatory requirements as well as the pat…
Identification of Demand through Statistical Distribution Modeling for Improved Demand Forecasting
Murphy Choy, Michelle L. F. Cheong
Demand functions for goods are generally cyclical in nature with characteristics such as trend or stochasticity. Most existing demand forecasting techniques in literature are desig…