Dynamic Programming for NLP
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چکیده
The strategy of dynamic programming reduces the complexity of a search problem which decomposes into frequently-reused instances of the same problem. You encountered dynamic programming for n-gram segmentation in HW4. We have also discussed two more dynamic programming algorithms in lecture: Viterbi and forward-backward. For HW5, you will need to implement the Viterbi algorithm. The forward-backward algorithm is an optional extension. In this notebook, we sketch an efficient implementation of the Viterbi algorithm. We will rereshape the forward-backward algorithm in section.
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