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A Constraint-Based Dental School Timetabling System

AI Magazine

We describe a constraint-based timetabling system that was developed for the dental school based at Cork University Hospital in Ireland. This sy stem has been deployed since 2010. Dental school timetabling differs from other university course scheduling in that certain clinic sessions can be used by multiple courses at the same time, provided a limit on room capacity is satisfied. Starting from a constraint programming solution using a web interface, we have moved to a mixed integer programming-based solver to deal with multiple objective functions, along with a dedicated Java application, which provides a rich user interface. Solutions for the years 2010, 2011 and 2012 have been used in the dental school, replacing a manual timetabling process, which could no longer cope with increasing student numbers and resulting resource bottlenecks. The use of the automated system allowed the dental school to increase the number of students enrolled to the maximum possible given the available resources. It also provides the school with a valuable “what-if” analysis tool.


A Constraint-Based Dental School Timetabling System

AI Magazine

This system has been deployed since 2010. Dental school timetabling differs from other university course scheduling in that certain clinic sessions can be used by multiple courses at the same time, provided a limit on room capacity is satisfied. Starting from a constraint-programming solution using a web interface, we have moved to a mixed integer programming-based solver to deal with multiple objective functions, along with a dedicated Java application, which provides a rich user interface. Solutions for the years 2010, 2011, and 2012 have been used in the dental school, replacing a manual timetabling process, which could no longer cope with increasing student numbers and resulting resource bottlenecks. The use of the automated system allowed the dental school to increase the number of students enrolled to the maximum possible given the available resources.


Tufts laying off employees due to coronavirus shutdown's impact on dental clinics

Boston Herald

Tufts University School of Dental Medicine in Boston is laying off 77 employees -- and slashing the hours for other workers -- after the coronavirus pandemic caused a major budget shortfall, the school announced on Tuesday. Altogether, 195 employees will be affected by the cuts that include layoffs, furloughs, fewer hours, reduced salaries, retirements and other departures. It's the latest Massachusetts school that has faced layoffs and furloughs amid the devastating coronavirus crisis. Tufts' dental school has been particularly hard hit by the impact of the virus, forcing the school to suspend its clinic operations in March, officials wrote. Before the coronavirus shutdown, the clinics at the dental school served about 625 patients each day.


Engineering Design through Constraint-Based Reasoning

AI Magazine

My dissertation concerns the application of constraint-based reasoning to parametric engineering design (Murtagh 1991).1 It deals with the practical application of constraint networks, using automated reasoning to overcome some of the blind spots in conventional iterative design.


An Introduction to Constraint-Based Temporal Reasoning

Morgan & Claypool Publishers

This book provides a concise introduction to the core computational elements of temporal reasoning for use in AI systems for planning and scheduling, as well as systems that extract temporal information from data. It presents a survey of temporal frameworks based on constraints, both qualitative and quantitative, as well as of major temporal consistency techniques. ISBN 9781608459674, 121 pages.