高瓜氨醯氨基腺苷
ThisarticleprovidesadetailedoverviewofWikipedia'ssearchfeature(intheupperleftcornerofaWikipediawindow.)(ThereisalsoaspecialSearchbox,whichiscustomizabletosearchinoneormoredesirednamespaces.)Italsoincludesinstructionsonusingexternalsearchengines,suchasGoogle,tofindinformation.ForashortintroductiontosearchingWikipedia,seeLookitup.
contents:
1Wikipediasearch
2Externalsearchengines
3Browser-specifichelp
4SearchingwithTomeRaider
5UsingWikimediasearchtofindcategoryintersections
6IfyoucannotfindanappropriatepageonWikipedia
7Seealso
Wikipediasearch
Help
Wikipedia
About(overview)
Search
Editing
FAQ
Help
Navigation
Contents
Portals
Categories
Featuredcontent
A-Zindex
Policiesandguidelines
Neutralpointofview
Verifiability
Nooriginalresearch
Citingsources
WhatWikipediaisnot
Externallinks
Typeyourkeywordsintheboxtotheleftunder"search"andthenclick:
-(orEnteronkeyboard)takesyoutothearticle.
-returnsalistofarticlesandadditionalsearchoptions.
Tipsforeffectivesearches
Fornow,asummaryofthenewfeatures(fromthemailinglistpostlinkedabove)are:
(1)Didyoumean?-dependingontheresultsofasearch,somecontext-sensitivesearchsuggestionsarealsoprovided,includingsuggestionsfordifferentspellings.
(2)Fuzzyandwildcardqueries-awordcanbemadefuzzybyadding~toit'send,e.g.querysarah~thompson~willgivealldifferentspellingsandsimilarnamestosarahthompson.Wildcardscannowbeprefixandsuffix,e.g.*stanwillgivevariouscountriesinCentralAsia.
(3)prefix:-usingthiscolon-definedsearchparameter,queriescanbelimitedtopagesbeginningwithcertainprefix.E.g.mwsuggestprefix:Wikipedia:VillagePumpwillsearchallvillagepumpsandarchivesformwsuggest.Thisshouldbeespeciallyusefulforarchivesearchinginconcertwithinputboxorsearchbox
(4)intitle:-usingthiscolon-definedsearchparameter,queriescanbelimitedtotitlesonly,forexampleintitle:BLPprefix:Wikipedia:(notetheneedforthetrailingcolon)findallWikipedianamespacepageswith"blp"inthetitle.
(5)Improvedquality-generalimprovedqualityofsearchresultsviausageofrelatedarticles(basedonco-occurrenceoflinks),anchortext,textabstracts,proximitywithinarticles,sections,redirects,improvedstemmingandsuch.
Phrasesindoublequotes
Aphrasecanbefoundbyenclosingitindoublequotes.Forexample,"hollydolly"returnssixmatches;hollydolly(twostandalonewords)returns197.
Goiscasesensitive
Mainarticle:Help:Gobutton
The"go"functionusesanalgorithmtodecidewhatpageyou'relikelytobeinterestedin,andthisusuallymasksitscasesensitivity–butnotalways.
Avoidshortandcommonwords
Ifyoursearchtermsincludeacommonstopword(suchasthe,your,more,right,while,when,who,which,such,every,about),youmayseemanyirrelevantresults.Previously,Wikipedia'ssearchfunctioncouldnotsearchforsuchwords.SinceFebruary2006,Wikipedia'sLuceneindexdoesnotfilteroutstopwords,soanywordcanbeprocessedinsearchqueries.
WildcardsandBooleansearching
Wikipedia'ssearchfeatureusesBooleanfulltextsearch.Pleaseexerciseself-restraintwhenusingwildcardcharacters,astheytakeatollontheserver.SeeBooleanfulltextsearchfordetailsontheiruse.
Wordswithspecialcharacters
Mainarticle:Wikipedia:Specialcharacters
Inasearchforawordwithadiaeresis,suchasSintOdiliënberg,itdependswhetherthisëisstoredasonecharacteroras"ë".InthefirstcaseonecansimplysearchforOdilienberg(orOdiliënberg);inthesecondcaseitcanonlybefoundbysearchingforOdili,eumland/ornberg.Thisisactuallyabugthatshouldbefixed–theentitiesshouldbefoldedintotheirrawcharacterequivalentssoallsearchesonthemareequivalent.
Wordsinsinglequotes
Ifawordappearsinanarticlewithsinglequotes,youcanonlyfinditifyousearchforthewordwithquotes.Sincethisisrarelydesirable,itisbettertousedoublequotesinarticlesforwhichthisproblemdoesnotarise.Seethemanualofstyleformoreinfo.
Anapostropheisidenticaltoasinglequote,thereforethenameMu'ammarcanbefoundonlybysearchingforexactlythat(andnototherwise).Awordwith'sisanexceptioninthatitcanbefoundalsobysearchingforthewordwithouttheapostropheandthes.
Namespaces
Thesearchonlyappliestothenamespacesselectedintheuser'spreferences.
Tosearchinaparticularnamespace,insertitsprefixwithacolon,forexampletemplate:checkmarkwillsearchfor"checkmark"intemplatenamespace.Useall:prefixtosearchinallnamespaces.
Tosearchinanysubsetofnamespaces,usetheadvancedsearchform,whichappearsatthebottomofasearchresultspage,ifasearchisunsuccessful.Dependingonthewebbrowserinuse,aboxmaystillbecheckedfromaprevioussearch,butwithoutbeingeffectiveanylonger!Tomakesure,uncheckandthenrecheckit.
Searchingtheimagenamespacemeanssearchingtheimagedescriptions,i.e.thefirstpartsoftheimagedescriptionpages.
Thesourcetextissearched
Thesourcetext(whatoneseesintheeditbox,alsocalledwikitext)issearched.Thisdistinctionisrelevantforpipedlinks,forinterlanguagelinks(tofindlinkstoChinesearticles,searchforzh,notforZhongwen),specialcharacters(ifêiscodedasêitisfoundsearchingforecirc),etc.
Delayinupdatingthesearchindex
Forreasonsofefficiencyandpriority,veryrecentchangesarenotalwaysimmediatelytakenintoaccountinsearches.
Multi-lingualWikipediasearch
Youcandoamulti-lingualWikipediasearchusingGoogleAdvancedSearchorenteringsite:wikipedia.orgintheGooglesearchbox.
Lumrix:AJAXdrivenWikipediasearchengine.SupportsotherlanguagessuchasGerman,Spanish,orFrench.
QwikahasindexesforEnglish,German,French,Japanese,Italian,Dutch,Portuguese,Spanish,Greek,Korean,Chinese,andRussianwheretheoriginalcontentiscombinedwithmachinetranslatedcontentfrom/toEnglish.
Definitions
Ifyou'relookingforastraightdefinition,tryoursisterprojectWiktionary.FordefinitionsoftermsusedinWikipedia,checkouttheglossaryorthetutorial'sglossary.
Searchingforexternallinks
Special:LinksearchisatoolforsearchingforlinksfromWikipediaarticlestositesoutsideWikipedia.Forexample,allWikipediapageslinkingtoYahoo.com.
Displayofsearchresults
Loggedinuserscanchoosehowmuchcontextandhowmanyhitsperpagetodisplaywithaparameterin"MyPreferences".
Externalsearchengines
Varioussearchenginescanprovidedomain-specificsearches,whichletyousearchWikipediaspecifically.Searchesarebasedonthetextasshownbythebrowser,sowikimarkupisirrelevant.Dependingonyourbrowser,youmayalsobeabletousetoolsthatallowyoutosearchWikipediausingbookmarklets.
Ingeneral,externalsearchenginesarefasterthanaWikipediasearch.However,becausethesearchengine'scacheisbasedonwhenthesitewasindexed,thesearchmaynotreturnnewlycreatedpages.Similarly,thesearchengine'scachedversionofthepagewillnotbeasup-to-dateasthelinktoWikipediaitself.Also,whenreturningWikipediaarticlesinaregularsearch,mirrorsandforksofWikipediacontentfrequentlyrankhigherthantheactualWikipediaarticlesbecauseofsearchengineoptimizationtechniques.
TheseissuesmaybelessofaproblemwhenusingcertainsearchenginesthatprocessWikipediadifferently:
GoogletendstoincludeWikipediaaspartofitsnormalsearch,anditcomesupfairlyaccurately.
Yahoo!includesWikipediaaspartofitscontentacquisitionprogramandgetsaregulardatafeed.
Clustydownloadsandprocessesthedatabaseregularly,generatingautomaticabstractsandimagethumbnailsandmeaningfullyparsingredirects,disambiguations,andcategories.
Qwikaonlyindexeswikis,andthusmirrorsdonotappearintheirresults.
Wikimedia-Search
Wikimedia-Searchwithsuggest-functionandforallprojects.
Clusty
Byfollowingthelinkbelow,youcanusetheClustysearchenginetosearchandclusterWikipediainEnglishonly.
SearchandClusterEnglishWikipediawithClusty
IfyoufrequentlysearchviaClusty,considerinstallingtheClustyToolbar(beta).Selectingthe"Encyclopedia"searchsourceallowsyoutoquicklysearchtheEnglishversionofWikipedia.TheClustyToolbarisavailableforWindowswithInternetExplorerandMozillaFirefox(beta).
Futef
FUTEFisasite,currentlyinbeta,limitedtoWikipediacontent.Besidesbasickeywordandfulltextsearchprovidingalistofrelevantarticles,italsolistsrelatedcategoriesinasidebar.
SearchWikipediawithFutef
