Muaj ob peb theem kev cai uas koj tuaj yeem siv tau zoo nyob rau hauv tag nrho cov kev tshawb fawb xyaw kom paub tseeb tias nws yog qhov uas koj tab tom nrhiav, thiab ib qho ntawm cov txheej txheem yooj yim yog siv cov cim ntxiv thiab rho tawm hauv koj qhov kev tshawb nrhiav qhov web . Qhov no feem ntau hu ua Boolean kev tshawb nrhiav thiab yog ib qho ntawm cov hom kev kawm theem qis tshaj plaws uas koj tuaj yeem siv rau hauv koj qhov kev tshawb nrhiav (zoo li yog ib qhov zoo tshaj plaws). Cov tswv yim no yoojyim, ua haujlwm zoo, thiab lawv yuav ua haujlwm nyob rau hauv tag nrho cov kev tshawb nrhiav xyaw thiab tshawb nrhiav txoj kab hauv Web.
Boolean Tshawb Nrhiav Dab Tsi?
Boolean luag tshawb koj muab cov lus thiab cov kab lus siv cov lus THIAB, LOSSIS, TSIS thiab NEAR (txwv tsis pub hu ua Boolean cov neeg khiav dej num) los txwv, hloov, lossis txhais koj qhov kev tshawb nrhiav. Feem ntau ntawm Internet kev tshawb fawb xyaw thiab Web directories vim qhov kev tshawb no tsis muaj Boolean, tab sis ib qhov kev tshawb nrhiav Web yuav tsum paub siv kev ua lag luam Boolean li cas.
Qhov twg lub sij hawm Boolean originate?
George Boole, ib tug mathematical English mathematician nyob rau hauv lub xyoo pua puv 19, tsim "Boolean Logic" thiaj li yuav muab cov tswv yim thiab cais tawm cov tswv yim thaum tshawb nrhiav databases.
Feem ntau hauv internet databases thiab kev tshawb nrhiav xyaw nyiaj txiag Boolean searches. Boolean nrhiav cov tswv yim yuav siv los nqa tawm cov kev tshawb nrhiav, txiav tawm ntau cov ntaub ntawv tsis sib thooj.
Yog Boolean Tshawb xyuas?
Siv Boolean Logic rau sab qis thiab / los yog nqaim koj tshawb nrhiav tsis nyuaj li nws suab; qhov tseeb, tej zaum koj yuav tsum tau ua. Boolean logic tsuas yog lub sij hawm siv los piav qhia txog cov kev ua haujlwm ntawm cov tswvyim uas siv los ua ke nrhiav cov ntsiab lus nrhiav ntau hauv kev tshawb nrhiav cav thiab cov kabmob ntawm cov Net. Nws tsis yog foob pob hluav taws kev tshawb fawb, tab sis nws paub tseeb zoo nkauj (sim sim ua cov lus no tawm hauv kev sib tham!).
Kuv yuav ua li cas nrhiav tau Boolean?
Koj muaj ob txoj kev xaiv: koj tuaj yeem siv cov txheej txheem Boolean tus qauv (THIAB, LOSSIS, TSIS, TSIS, lossis NEAR, lossis koj siv tau cov kev ua zauv sib npaug.Yog nws nyob ntawm koj, tus neeg tshawb nrhiav, yam twg koj nyiam dua nrog. :
Boolean Kev Nrhiav Haujlwm
- Cov neeg teb xov tooj Boolean nrhiav thiab sib npaug zos rau "+" cim.
- Lub Boolean search operator TSIS yog sib npaug zos rau "-" cim.
- Lub Boolean nrhiav tus neeg teb xov tooj LOS YOG yog qhov chaw ntawm qhov kev tshawb nrhiav cav; lub ntsiab lus, tag nrho cov kev tshawb fawb xyaw rov qab yuav xa tag nrho cov lus koj ntaus hauv, txiav.
- Lub Boolean nrhiav tus neeg teb xov tooj NEAR yog sib npaug los muab cov lus nug hauv quotes, piv txwv li, "sponge bob squarepants". Koj 'yos yeej tseem paub qhov cav uas koj xav tau tag nrho cov lus no, hauv qhov kev txiav txim tshwj xeeb lossis kab lus no.
Basic Math - Boolean - Muaj Kev Pab Nrog Koj Qhov Web Search
Cov zauv yooj yim tuaj yeem pab koj hauv koj qhov Web site search. Ntawm no yog li cas nws ua haujlwm:
- Lub cim cim:
Siv lub cim "-" thaum koj xav tau lub cav tshawb nrhiav kom pom cov nplooj ntawv uas muaj ib lo lus tshawb nrhiav rau lawv, tab sis koj xav tau lub cav tshawb xyuas kom tsis txhob muaj lwm cov lus uas feem ntau cuam tshuam nrog qhov kev tshawb nrhiav ntawd. Piv txwv li:
- Superman -Krypton
Koj tab tom hais rau qhov kev tshawb fawb xyaw uas koj xav nrhiav cov nplooj ntawv uas tsuas muaj lo lus "Superman", tab sis tshem tawm cov npe uas muaj cov lus qhia txog "Krypton". Qhov no yog txoj kev yooj yim thiab yoojyim kom tshem tawm cov ntaub ntawv ntxiv thiab nqaim koj tshawb nrhiav; ntxiv rau koj tuaj yeem ua ib txoj hlua ntawm cov lus tshem tawm, zoo li qhov no: superman-krypton - "lex luthor".
- Lub cim ntxiv:
Tam sim no koj paub paub tshem tawm cov ntsiab lus nrhiav, qhov no yog li cas koj tuaj yeem tau ntxiv rau hauv, siv "+" cim. Piv txwv li, yog tias koj muaj cov ntsiab lus uas yuav tsum tau xa rov qab rau hauv tag nrho koj cov txiaj ntsig kev tshawb nrhiav, koj tuaj yeem tso cov cim ntxiv rau ntawm lub ntsiab lus uas koj xav kom muaj ntxiv, xws li:
- football + nfl
Koj cov txiaj ntsig tshawb tau tam sim no muaj ob nqe lus no.
Xav paub ntxiv txog Boolean
Nco ntsoov hais tias tsis yog tag nrho cov kev tshawb fawb xyaw thiab cov kev qhia txhawb Boolean cov lus. Txawm li cas los xij, feem ntau ua, thiab koj tuaj yeem yooj yim nrhiav tau yog tias koj xav siv cov txheej txheem no los ntawm kev nug cov lus nug (Cov Nqe Lus Nquag Nug) ntawm qhov tshawb nrhiav cav lossis phau ntawv hauv tsev.
Nruab Nrab: BOO-le-un
Kuj paub tias: Boolean, boolean logic, boolean nrhiav, boolean tswv, boolean operands, boolean txhais, boolean searching , boolean lus txib
Piv txwv: Siv thiab ua luam ntau los ntawm kev sib txuas lus; nws yuav rov qab cov ntaub ntawv uas siv ob nqe lus uas koj xaiv, xws li hauv qhov ua piv txwv no:
- Portland thiab Oregon
Siv LOSSIS broadens qhov kev tshawb fawb kom muaj cov ntsiab lus uas muaj cov lus koj sau hauv.
- liberal los yog democrat
Kev siv TSIS yuav ua rau kev tshawb nrhiav los ntawm tshem tawm cov ntsiab lus tshawb nrhiav.
- Oregon tsis mus
Boolean Tshawb nrhiav: Pab tau zoo rau kev tshawb nrhiav
Boolean nrhiav tshuab yog ib lub hauv paus ntsiab lus hauv qab hnub qub tshawb nrhiav xyaw . Yog tias tsis muaj kev paub txog nws, peb tab tom ua kom zoo dua qhov kev tshawb nrhiav qhov yooj yim txhua lub sij hawm peb ntaus hauv cov lus nug. To taub cov txheej txheem thiab kev paub ntawm Boolean searching yuav muab peb cov kev tsim nyog tsim nyog peb xav ua kom peb tshawb nrhiav ntau dua.