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Decisions #1
| Question | Answer |
|---|---|
| What is operations research | using math & data to make better decisions |
| What is 1, descriptive analytics 2,predictive analytics 3, prescriptive analytics | 1, descriptive analytics = using past data to describe things 2,predictive analytics = uses models/statistics to predict the future 3, prescriptive analytics = uses data to make decisions |
| What is Model & Method | Model = for representing a real-world problem Method = calculation for a decision |
| What is optimization (3) | 1, choosing an alternative out of a set of at least two alternative 2, alternatives given explicitly =Chose a number 1,2,n -A1,A2,..An 3, alternatives given implicitly = Chose an integer given constrains an variables -10<x<10 with the give |
| What are 1, feasible alternatives 2,non-feasible alternatives 3, optimal alternatives | 1, feasible alternatives >> possible, satisfying all the constrains 2,non-feasible alternatives >> impossilbe / not allowed 3, optimal alternatives >> best alternative among all feasible solutions |
| How can we mathematically write a feasable set (2) | 1, X⊂ R^n 2, out of all possibiliteis (R^n) X is set of the allowed ones |
| What does x ∈ X mean | one specifically allowed solution from all feasable solutions |
| How to write constrains for each segment of work (2) | 1, for each solution passing this segment 2, z.B: x1+x2 ≤ 1 |
| What is Notation for optimalization problems (2) | z∗ = min z(x ) subject to x ∈ X z∗ = max z(x ) subject to x ∈ X |
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semester1.IBWL