Bellman

From Free net encyclopedia

• Carl Michael Bellman was a Swedish poet and composer.
• Richard Bellman was an American mathematician.

In Lewis Carroll's poem The Hunting of the Snark, the Bellman is the leader of the Snark hunting trip. He is a fine speaker, a handsome and inspiring man, but a rather poor sailor.

This was charming, no doubt: but they shortly found out

That the Captain they trusted so well

Had only one notion for crossing the ocean,

And that was to tinkle his bell.

Carroll's Bellman also appears in Jasper Fforde's novel The Well of Lost Plots as the head of Jurisfiction.

A bellman can also be a name for a bellhop.

In relation with Reinforcement learning, the Bellman equation expresses the value function in relation with an observation of itself and the reward.

<math>V(s)=E[R + gamma V(s')]</math>

The Hamilton-Jacobi-Bellman equation gives a value function in continuous time and space.

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