Correct predictions are in blue. If we detect only a subset of a labelled sentence, we highlight the caught part as blue, the missing part light blue. False positives are in green and false negatives are in red.

Problem Fleet_Assignment — Constraint detection

The fleet assignment problem consists of assigning aircraft -LRB- fleets -RRB- to flights in order to maximize net profit . Given a flight schedule , which is a set of flight segments with specified departure and arrival times , and a set of aircraft , the fleet assignment model determines which aircraft or fleet type should fly each flight segment . The fleet type is a particular class of aircraft defined by : the seating capacity ; the fuel consumption ; other factors that can affect revenues and costs . The objective is to maximize revenue minus operating costs . The revenue is a function of the demand for the segment , the cost of tickets and the seating capacity of the plane . Operating costs depend on the size and efficiency of the plane and on the length of the segment . Opportunity -LRB- spill -RRB- costs include losing spilled -LRB- bumped -RRB- passengers due to excess demand . These costs are a function of both the demand for a flight and the aircraft capacity . The constraints on the assignment model : There must be a plane at the airport for the flight . One-stop flights must have both legs assigned to the same fleet . Each airport must begin and end the week with the same distribution of planes . `` Source '' and `` sink '' airports are added so that we can build the third type of constraint .

Problem Fleet_Assignment — Detection of the decisions and objects to be modeled

The fleet assignment problem consists of assigning aircraft -LRB- fleets -RRB- to flights in order to maximize net profit . Given a flight schedule , which is a set of flight segments with specified departure and arrival times , and a set of aircraft , the fleet assignment model determines which aircraft or fleet type should fly each flight segment . The fleet type is a particular class of aircraft defined by : the seating capacity ; the fuel consumption ; other factors that can affect revenues and costs . The objective is to maximize revenue minus operating costs . The revenue is a function of the demand for the segment , the cost of tickets and the seating capacity of the plane . Operating costs depend on the size and efficiency of the plane and on the length of the segment . Opportunity -LRB- spill -RRB- costs include losing spilled -LRB- bumped -RRB- passengers due to excess demand . These costs are a function of both the demand for a flight and the aircraft capacity . The constraints on the assignment model : There must be a plane at the airport for the flight . One-stop flights must have both legs assigned to the same fleet . Each airport must begin and end the week with the same distribution of planes . `` Source '' and `` sink '' airports are added so that we can build the third type of constraint .

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