Dab tsi yog txoj hlua sib txuam hauv DAA?
Dab tsi yog txoj hlua sib txuam hauv DAA?

Video: Dab tsi yog txoj hlua sib txuam hauv DAA?

Video: Dab tsi yog txoj hlua sib txuam hauv DAA?
Video: dag kuv dab tsi By zoo xyooj 2024, Kaum ib hlis
Anonim

Txoj hlua Matching Algorithm tseem hu ua " Txoj hlua Nrhiav Algorithm." Qhov no yog chav kawm tseem ceeb ntawm txoj hlua algorithm tau tshaj tawm tias "qhov no yog txoj hauv kev los nrhiav qhov chaw uas ib qho yog ob peb hlua muaj nyob rau hauv qhov loj dua txoj hlua ."

Tsuas yog li ntawd, dab tsi yog txoj hlua naive txuam algorithm?

Naïve pattern kev tshawb nrhiav yog qhov yooj yim tshaj plaws ntawm lwm yam qauv nrhiav algorithms . Itchecks rau tag nrho cov cim ntawm lub ntsiab txoj hlua mus rau qauv . Qhov no algorithm yog pab tau rau cov ntawv me. Lub sij hawm complexity ntawm Naïve Pattern Txoj kev tshawb nrhiav isO(m * n).

Dab tsi yog cov hlua sib txawv algorithms? Lwm tus faib cov algorithms los ntawm lawv cov kev sib tw:

  • Sib piv cov lus ua ntej (Knuth-Morris-Pratt, Ua haujlwm-Thiab, Aho-Corasick)
  • Sib piv cov lus ua ntej (Boyer-Moore thiab variants, Commentz-Walter)
  • Sib piv qhov zoo tshaj plaws ua ntej (BNDM, BOM, Teem-BOM)
  • Lwm yam tswv yim (Naive, Rabin-Karp)

Tsuas yog li ntawd, tus qauv sib piv hauv DAA yog dab tsi?

Txawv sib piv hauv computer science yog thechecking thiab nrhiav qhov tshwj xeeb ib ntus ntawm cov ntaub ntawv ntawm ib co qauv ntawm raw cov ntaub ntawv los yog ib ntus ntawm tokens. Tsis zoo li qauv kev lees paub, lub sib tw yuav tsum muaj tseeb nyob rau hauv cov ntaub ntawv ntawm qauv txuam.

Dab tsi yog brute force string matching?

Brute - quab yuam txoj hlua sib phim piv agen qauv nrog rau tag nrho cov substrings ntawm cov ntawv muab. Cov kev sib piv ntawm substring thiab qauv ua tus cwj pwm ntawm tus cwj pwm tshwj tsis yog pom qhov tsis sib haum xeeb.

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