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## umontreal.iro.lecuyer.contactcenters.expdelay
Class LastWaitingTimePerQueuePredictor

    java.lang.Object
      umontreal.iro.lecuyer.contactcenters.expdelay.LastWaitingTimePredictor
          umontreal.iro.lecuyer.contactcenters.expdelay.LastWaitingTimePerQueuePredictor

All Implemented Interfaces:
  WaitingTimePredictor

    public class LastWaitingTimePerQueuePredictor

extends LastWaitingTimePredictor

Waiting time predictor using the waiting time of the last contact exiting queue q for service as a prediction for the waiting time of a new contact entering queue q. This predictor collects the waiting times of contacts, and stores the last waiting time separately for each queue. If a prediction is requested for a specific queue, the last waiting time for that queue is given. If a prediction is requested for any queue, the last waiting time over all queues is given.

Constructor Summary
`LastWaitingTimePerQueuePredictor()`

Method Summary
`protected void` | `dequeued(DequeueEvent ev)`
`double` | `getWaitingTime(Contact contact, WaitingQueue queue)` Returns a prediction of the waiting time for the given contact `contact` conditional on the contact joining the waiting queue `queue`.
`void` | `init()` Resets any internal variable of this predictor.
`void` | `setRouter(Router router)` Sets the router associated with this predictor to `router`.

Methods inherited from class umontreal.iro.lecuyer.contactcenters.expdelay.LastWaitingTimePredictor
`getRouter, getWaitingTime, isCollectingAbandonment, isCollectingService, setCollectingAbandonment, setCollectingService`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### LastWaitingTimePerQueuePredictor

    public LastWaitingTimePerQueuePredictor()

Method Detail

### getWaitingTime

    public double getWaitingTime(Contact contact,
                                 WaitingQueue queue)

  Description copied from interface: `WaitingTimePredictor`
  Returns a prediction of the waiting time for the given contact `contact` conditional on the contact joining the waiting queue `queue`. This method returns `Double.NaN` if it cannot make a prediction for the given contact, or the given waiting queue.

  Specified by:
    `getWaitingTime` in interface `WaitingTimePredictor`
  Overrides:
    `getWaitingTime` in class `LastWaitingTimePredictor`
  Parameters:
    `contact` - the contact for which a delay is predicted.
    `queue` - the target waiting queue.
  Returns:
    the predicted delay.

### init

    public void init()

  Description copied from interface: `WaitingTimePredictor`
  Resets any internal variable of this predictor.

  Specified by:
    `init` in interface `WaitingTimePredictor`
  Overrides:
    `init` in class `LastWaitingTimePredictor`

### setRouter

    public void setRouter(Router router)

  Description copied from interface: `WaitingTimePredictor`
  Sets the router associated with this predictor to `router`. When `router` is non-`null`, this method can also register any listener required to make the predictions. If the router associated with a predictor is changed, the predictor should unregister any listener associated with the previous router.

  Specified by:
    `setRouter` in interface `WaitingTimePredictor`
  Overrides:
    `setRouter` in class `LastWaitingTimePredictor`
  Parameters:
    `router` - the new router.

### dequeued

    protected void dequeued(DequeueEvent ev)

  Overrides:
    `dequeued` in class `LastWaitingTimePredictor`

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