Unit 9 30 Value Iterations and Policy 1 knowitvideos English Japanese

Unit 9 30 Value Iterations and Policy 1YouTube↗ IA↗(long shot)
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So, now that we have a value backup function

価値のバックアップ式について詳細に見てきました

that we discussed in depth, the question now becomes what's the optimal policy?

次の問題は“最適なポリシーは何か”です

And it turns out this value backup function defines the optimal policy as completely opposite

価値バックアップ式がどの行為を選ぶかを示すことで

of which action to pick,

最適なポリシーを定めます

which is just the action that maximizes this expression over here.

最適なポリシーとは式のこの部分を最大化する行為です

For any state S, any value function V,

任意の状態sと任意の価値関数Vに対し

we can define a policy,

ポリシーを定義できます

and that's the one that picks the action under argmax that maximizes the expression over here.

それは式のこの部分を最大化する行為を argmaxで取ってきたものです

For the maximization, we can safely draw up gamma and R(s).

最大化において報酬とγは影響しないので取り除けます

Baked in the value iteration function was already an action choice that picks the best action.

価直反復の更新式で既に最適な行為を取ったので

We just made it explicit.

それを明示的に書きました

This is the way of backing up values, and once values have been backed up,

これにより価値を伝播し価値を求めれば

this is the way to find the optimal thing to do.

最適なポリシーを見つける手段になります

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