Express effectiveness context model

1. Overview

Manages express effectiveness constraints that optimize item priority ordering — ensuring high-priority cargo is loaded preferentially.

1. Dependent Contexts

Aircraft
Stowage

2. Concepts / Entities

1. Absolute Order

Defines absolute priority ordering for predistribution mode.

$o r d e r_{i}$ : Absolute priority order of item $i$ .

2. Relative Order

Defines relative priority ordering for full-load mode.

$r e l a t i v e O r d e r_{i j}$ : Priority order of item $i$ relative to item $j$ .

3. Must-Ship Items

Items that must be shipped regardless of priority.

$m u s t S h i p I n d i c e s$ : Index list of must-ship items.

3. Variables

1. Decision Variables

This context reuses decision variables from the stowage context and does not define independent decision variables.

2. Auxiliary Variables

This context does not define independent auxiliary variables.

4. Predicates

This context does not define independent predicates.

5. Sets

This context does not define independent sets; its limits range over items and positions from the stowage context.

6. Intermediate Values

This context does not define independent intermediate values.

7. Assertions

This context does not define independent assertions.

8. Constraints

1. Must-Ship Limit

[CN]: 必须发运限制

Description: Must-ship items must be loaded.

s . t . \sum_{j \in J} x_{i j} = 1, \forall i \in M u s t S h i p

2. Item Priority Limit

[CN]: 货物优先级限制

Description: Higher priority items should be loaded before lower priority items.

s . t . p r i o r i t y_{i} < p r i o r i t y_{j} \to l o a d e d_{i} \geq l o a d e d_{j}, \forall i, j \in I t e m s

9. Objective Function (if applicable)

Minimize priority violation cost.

min \sum_{i \in I} p r i o r i t y V i o l a t i o n C o s t_{i}

10. Algorithm References

This context does not define an independent algorithm reference.

11. Ubiquitous Language

Term	Symbol	Definition
Absolute Order	`AbsoluteOrder`	Priority ordering for predistribution mode
Relative Order	`RelativeOrder`	Priority ordering for full-load mode
Must-Ship Items	`MustShip`	Items that must be shipped

12. Design Decisions

Decision	Alternatives	Rationale
Ordering mode	Absolute vs Relative	Different stowage modes use different ordering strategies

13. Change Log

No context-specific change entries are recorded on this page.

Express effectiveness context model ​

1. Overview ​

1. Dependent Contexts ​

2. Concepts / Entities ​

1. Absolute Order ​

2. Relative Order ​

3. Must-Ship Items ​

3. Variables ​

1. Decision Variables ​

2. Auxiliary Variables ​

4. Predicates ​

5. Sets ​

6. Intermediate Values ​

7. Assertions ​

8. Constraints ​

1. Must-Ship Limit ​

2. Item Priority Limit ​

9. Objective Function (if applicable) ​

10. Algorithm References ​

11. Ubiquitous Language ​

12. Design Decisions ​

13. Change Log ​