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We know that every optimisation problem has an equivalent decision problem.

So say I keep going up a mountain (I.e. I am maximising my altitude) following a certain number of finite steps (similarly to a TM). Is that enough to assert that I am solving a decision problem?

If yes which one?

Raphael
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Jerome
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    Also related. – Raphael Sep 04 '16 at 10:20
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    And not, stating a maximization problem and calling it decision problem doesn't make it one. – Raphael Sep 04 '16 at 10:21
  • @Raphael Well let me give you my version. In my example I am maximising my altitude by synthetically checking where my next step can lead me. Once that's done I take the step which produces the largest positive change in altitude. That's a decision problem and it looks like I can generalise this process leading me to believe that indeed every optimisation problem can be seen as a decision problems like shown by CS theory. Anything wrong with my reasoning? – Jerome Sep 04 '16 at 15:04
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    You are not using "decision problem" in the way we do in TCS. We don't mean "decide where to go" but "decide between yes and no". – Raphael Sep 04 '16 at 18:44
  • @Raphael I am. I am searching for the maximum altitude using a yes/no method – Jerome Sep 04 '16 at 19:30

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