Cov txheej txheem:
Video: Muaj pes tsawg hom kev tshawb fawb cav muaj?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Nyob ntawd yog plaub theem pib, txhua tus crawler raws nrhiav cav ua raws li ua ntej tso saib tej chaw hauv lub nrhiav tshwm sim.
Piv txwv ntawm Crawler Based Search Engines
- Google.
- Bing.
- Yahoo!
- Baidu.
- Yandex.
Kuj kom paub yog, hom kev tshawb fawb sib txawv yog dab tsi?
Daim ntawv teev npe saum 10 Cov Kev Tshawb Fawb Tshaj Lij Tshaj Lij Tshaj Plaws Hauv Ntiaj Teb (Hloov Kho 2019)
- Google.
- Bing.
- Yahoo.
- Ask.com.
- AOL.com.
- Baidu.
- Wolframalpha.
- DuckDuckGo.
Ib tug kuj yuav nug, dab tsi yog search engine lub npe ib tug peb search engine? Tshawb nrhiav cav . Hnub no, tus nrov tshaj plaws thiab paub zoo nrhiav cav yog Google. Lwm yam nrov kev tshawb nrhiav suav nrog AOL, Ask.com, Baidu, Bing, thiab Yahoo.
Ib sab ntawm no, muaj pes tsawg hom kev tshawb nrhiav?
Hom kev tshawb nrhiav : Cov ntsiab lus luv luv Cov no tshawb nrhiav tuaj yeem muab faib ua peb qhov sib txawv nrhiav qeb: kev lag luam, navigational, thiab cov ntaub ntawv.
Vim li cas thiaj muaj cov tshuab tshawb nrhiav sib txawv?
Yog li nrhiav cav “saib” tus web txawv. Qhov chaw tshwj xeeb algorithms txawv luj on txawv yam. Feem ntau nrhiav cav yog txawv vim lawv muaj bots tshwj xeeb thiab indexes uas qeb cov websites hauv lawv tus kheej txoj kev. Bing zog Yahoo tab sis lawv cov txiaj ntsig yog txawv.
Pom zoo:
Puas yog kev tshawb nrhiav linear zoo ib yam li kev tshawb fawb sib txuas?
Chav Kawm: Nrhiav algorithm
Dab tsi yog cov tshuab tshawb nrhiav uas tshawb nrhiav lwm lub tshuab tshawb fawb?
Txhawm rau pib tawm ntawm peb txoj kev tshawb nrhiav taug txuj kev nyuaj, cia saib qee qhov kev tshawb fawb dav dav tshaj qhov peb sab saum toj. DuckDuckGo. Kev txhawj xeeb txog kev ceev ntiag tug hauv online? Nrhiav Encrypt. Nrhiav rau lwm txoj rau DuckDuckGo? Ecosia. Xav tau tsob ntoo cog thaum koj tshawb nrhiav? Dogpile. Blekko. WolframAlpha. Gigablast. Facebook Nrhiav
Dab tsi yog qhov dav thawj qhov kev tshawb nrhiav thiab qhov tob thawj qhov kev tshawb fawb?
BFS sawv rau Breadth First Search. DFS sawv cev rau Kev Tshawb Nrhiav Qhov tob. 2. BFS (Breadth First Search) siv Queue cov qauv ntaub ntawv los nrhiav txoj hauv kev luv tshaj. BFS tuaj yeem siv los nrhiav ib qhov chaw luv tshaj plaws hauv cov duab tsis hnyav, vim tias hauv BFS, peb mus txog qhov kawg uas muaj qhov tsawg kawg nkaus ntawm cov npoo los ntawm qhov chaw vertex
Muaj pes tsawg cov khoom nyob hauv ib byte pes tsawg tus nibbles nyob hauv ib byte?
Txhua 1 lossis 0 hauv tus lej binary raug hu ua me ntsis. Los ntawm qhov ntawd, ib pawg ntawm 4 cov khoom hu ua nibble, thiab 8-ntsis ua ib byte. Bytes yog ib tug zoo nkauj buzzword thaum ua hauj lwm nyob rau hauv binary
Dab tsi yog qhov zoo ntawm kev tshawb fawb zoo tshaj li kev tshawb fawb ntau?
Cov ntaub ntawv los ntawm kev tshawb fawb ntau - xws li kev lag luam loj, pej xeem, thiab cov neeg siv nyiam - muab cov ntaub ntawv tseem ceeb rau kev txiav txim siab ua lag luam. Kev tshawb fawb zoo muab cov ntaub ntawv tseem ceeb rau kev siv hauv kev tsim cov khoom lag luam-nrog rau cov ntaub ntawv hais txog cov neeg siv khoom xav tau, tus qauv coj tus cwj pwm, thiab cov ntaub ntawv siv