Engineering
Engineering, 06.05.2020 05:37, MileenaKitana

P14.7.9 Here is an optimization problem that we can solve with the aid of an ordinary NFA and another technique from Chapter 9. We are given a finite set S of nonempty words over 2, and a string w of length n over E. We would like to find non-overlapping occurrences of words in S within w, to use as many as possible of the letters in w. We are allowed to use the same word in S multiple times if that is best. (a) Build an ordinary NFA N, with one final state that is also the start state, such that an accepting w-path corresponds to a set of non-overlapping occurrences of words from S within w. (b) In Chapter 9 we learned uniform-cost search, which finds the shortest path from one node to another in a labeled directed graph. Construct a labeled directed graph G from N, with one final state f, such that any path from the start state to f corresponds to a set of non-overlapping occurrences of words from S in w, and the cost of that path is 2n-m, where m is the number of letters of w used by the words from S. (Hint: Make G from n + 1 copies of N.) (c) Explain how, using uniform-cost search, we can find the optimal set of word occurrences. Note that UCS finds paths of minimum cost, while we want paths of maximum value.

answer
Answers: 2

Other questions on the subject: Engineering

image
Engineering, 04.07.2019 12:10, Ryantimes2
On a average work day more than work place firs are reorted
Answers: 1
image
Engineering, 04.07.2019 18:10, Candi9697
A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.
Answers: 2
image
Engineering, 04.07.2019 19:10, jrcspiderman2003
Asteel wire of 2 mm diameter is fixed between two points located 2 m apart. the tensile force in the wire is 250n, if its density of steel is given by 7830 kg/m3 the fundamental frequency of vibration hz? ?
Answers: 3
image
Engineering, 06.07.2019 02:30, cofran
A75mm diameter shaft is supported in a journal bearing 75mm long with a diametral clearance of 0. 1mm. it supports a radial load of 1000 n and is lubricated with sae 50 oil at 70°c. find the friction torque and the power loss when the crankshaft rotates at 2900 rev/min.
Answers: 1
Do you know the correct answer?
P14.7.9 Here is an optimization problem that we can solve with the aid of an ordinary NFA and anothe...

Questions in other subjects: