Review set
Finding the direction of improvement
The questions give you an objective and ask which way the contour travels, including minimisations and negative coefficients. Drawing the family returns easily; keeping the direction right when the problem is a minimisation, and settling a doubtful direction by the sign of a dot product, is what needs practice.
What this involves
Retrieval after a delay, which is what makes knowledge durable.
Answers here count towards what the system knows about your skills.
What this covers
- Locate the direction of improvement for a linear objective
Given a linear objective and a direction of optimisation, the learner can draw or describe the contour family, identify the coefficient vector as the direction of increase, decide whether a proposed direction improves the objective, and state which way a contour must be pushed.