1、Google及其 它搜索51擎的高级使用廖三三E-mail: HYPERlink mailto:liaoss liaoss主要内容搜索引擎的定义，原理等介绍Google以及Google相关的一些服务其它搜索引擎的介绍搜索引擎(Search Engine)的定义搜索引擎是指通过网络搜索软件或网站 登陆等方式，将互联网上大量网站的页 面收集到本地，经过加工处理而建库， 从而能够对用户提出的各种查询作出响 应，提供用户所需的信息。Search Engine,常常是用户利用网上资 源的第一途径。搜索引擎原理搜索引擎的原理，可以看做三步：从互 联网上抓取网页一建立索引数据库一在 索引数据库中搜索排序。搜
2、索引擎并不真正搜索互联网，它搜索 的实际上是预先整理好的网页索引数据 库。搜索引擎也不能真正理解网页上的内容, 它只能机械的匹配网页上的文字。搜索引擎分类写照原理分：关键词搜索引擎，主题分 类才旨南 (directory search engine ), 元也 索引擎(meta-search engine )：基于搜 索引擎的搜索引擎。按类型分：web搜索引擎，ftp搜索引擎, 学术搜索引擎，blog搜索引擎，新闻搜 索引擎。Google简介由两个斯坦福大学博士生Larry Page与 Sergey Brin于 1998年9月发明。约搜索30亿张网页，包括35个国家和地 区的语言的资源。已占有
3、全球搜索市场的80%。Google在 中国的搜索市场的市场份额也已突破 30%,并且增长速度迅猛，在中文搜索 市场有举足轻重的作用。Google特色布尔逻辑：+,-,OR高级搜索；site, link, inti tic, allintitlc , inurl, allinurl。查找PDF文件，filetype:pdf智能化的“手气不错”功能，提供可能 最符合要求的网站。“网页快照”功能，能从Google服务器 里直接取出缓存的网页。逐 Yahoo! Photos - Submt your best Mommy & Me photo for a chmce to vdn Learn moi8
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11、a是DEC公司1995年12月 推出的 万维网搜索引擎WebImages MP3/AudioVideo Directory NqwsFINDAdvanuod SoaruhSuMinQSSEARCH: G Worldwide or Se加ct r country RESULTS IM; G All languagesEnglishTronslate Toolbar More Business Sft.-veos Suomit 3 Sito Abeut AltnVIcti Pnwaey Po： -yHelp 2004 Overture Services, Inc.AskJeeves( HYPERL
12、INK / /)YourI DownloadI HelpExcite Excite是由斯坦福大学1993年8月创建的Join Now Siqn InPersonalize:- Cem - lomui - C而 g 1旧旧Googlo Sponsored links Mortgage CalMldtocJree Cakuldte your payment, vnow th amortization schndulo, gt Y，ur 0心义 FHd uHn.mi fatter *G EHt* YIonFms.Plav I RLL iameg m me Excite CarinaShop Comp
13、uters, Book), Air Ticlcets, Classifieds.roolw Bb?. Redoes.My links:a ui&i4如 425ETx Poll FighiMg m Fallujah Tip ImofON Your Ga, 忖鲸。 Search New Job Lighnge Gogaipl Fashionl Photosl Frge Moilgage OtwQgs Bad Cidii HEoloaFNw kdvyl pRak4 丫匕th匕SymbolPriceChange1031450-123.36NASDAQ1.97863-41 Sonew Portiolip
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16、 View Dy Relevance C View By Search ErgineSave at 1 - QOO-PetMnds1-800-PtWGds guar2nteqs low pnes on your dogs fia/ bek, hartworm and othr pet medicacons, induding Frontine Fres shipping on orders over $49.Sponsored by: httD：/www. 180CPct Dc!i Store: Food and Trets for DZ0g 9网页文件目累信息博物馆主题类别，r即-2 一回盲
17、 2情聋网- I搜索产-I索文件I於目简介|搜索论坛|使用用劲|登录网站|香港天网|天阳叶代|天网投角2004 戊网用就安-搜索1亿阳贡http: searchenginewatch, com/ DepartmentsSearch 6nQne SubmissionTipsWb foarchg TipcSa Arch Hngc。LictingcRevitwc, Retina &Saarch Engine RosourcetSearchDaySearch Engine ReportMembers Area Site InfoAdYrti5mo Infoabout The SiteKeywordRR
18、ecent Ncwi StoriesLooale in LQmroversy uveiDD-zanUnci cr AMi Jewish SiteApril 25, 2004 - GccqIqi has dddd a disclaimer to the search results that come up in 6 response for e search on jewz to counter complaints about an anti-Jewish site that until roeontly rankod number ona.Search Enaine Forums Spot
19、liahtApril 23, 2004 Unk to this v/e&ks topics from search engine forums across the web: Testing Different Copy Without Spamming - Noxt Steps for Search Enorno Optmizatxjn?- Accurately Counting Bad： links - Is Text BQgr Than Images n Thg hqxC - Browser Detection - Nosnippets and DcscriptQn Met。Toss C
20、an I Do SEO for Limited Edition Products That Last ONy One Month?-8口cfc Hat TochniquocMdsSririd Searcii Eno加e Adveti4n(iApril 22. 2004 - Buying your way to the top of search results may jeem easy, but managing an effective search enginescatmiMfic 0O0COMR Search Enalne Watch MarketplaceB 里 vsCiAxcoiS
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22、 Engine Basm Queries & Keywords Engine RovtewA AlRhewebAltoViito A5k JCCVC5 Dejsnews Direct Hit OogPile Excite AQ FTP S e arch GO Google GOT。Mot Dot InfoSpaceProgramPg”CU”FAQ?fip?Index?Mice? eWt? Port.PDi*newg300M msgBestNrjhNYNBaoina250MBestnNYNHNNVahoo5D0TBestFJnHNNNYAJITheWeb300MExcellentNrjYNNNN
23、250MFXCQllftOCNrjYhJNYYFAQS3300 FAQS 100M fileExcellentYnHNYNNFTP$gdrchexcellentVNNNNNSN/AE 乂 8ll9NNNNYNNN?GoodtJrjNNYNYsk M-Wi.8M Ques.GoodYuNNNYDir d Ctfiit?GoodNNhNNNY9GoodtJrjVNNYYA Summary of Major Search EnginesThe following is a brief summary of major search engnes that you should conside- an
24、d be fanner with. These are all good candidates for 6ndirg agrgnt types of informatcn on tl ntornet. Dont qq an ongino that you want to loam about? MX ur 2nd wqII look int adding it.Click on nv of 由七 links for more information on each engine (sorted by rank, then alphabetically).Home | Bookmark I Sc
25、tHomcoJQe I Tell others! I Search I Contort ILOOKOFF12 3 4 5Advoncd Tactics Jnteme Introuctwn Engine 05icsCh. 5.12 GoogleGoogla (wv/)Areas: | Enxne ReviewsA simple tntrface with effective result - quick easy searches can be very efifechVe.Queries & Keywords Engine R*ivew A AlllbcWcb AlUVitU M，ir)Ud
26、H，l 口 F* M，OverviewAsk J6Y$ Dejanews Direct Hit OogPile excite r，Qorg ftp SearchTypically, folks look for search engines that are either very simple, or very powerful. Google does a very good job of being both - it does not have huge configurability options, but its aigorithm for matching your keywo
27、rds to relevant sites is surpnsingly good. This is not a powerful search interface, but it ts definitely a powerful tool for new and intermediate users looking for fast and accurate results.Go GooqIo GoTo Mot BotInfoSpace(*MSNNorthern Light Open Oredory Ro gin g Search SSnapWebCenter (AOL)YahooQ ond
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30、ntl/ impeded Accuracy for common topics Lack of powur fatures Coverage of the Internet is mu loss than some competitors总结每种搜索引擎都有不同的特点，只有选 择合适的搜索工具才能得到最佳的结果。随着Web查询技术的发展，新的搜索引 擎必将不断涌现，已有搜索引擎的功能 也会不断改善，在优胜劣汰中进步。FTP搜索引擎FTP Search Engine（文件服务搜索引擎）是 具有查询FTP资源功能的WWW网页北大天网的FTP搜索引擎 HYPERlink http:/bingle.p
31、kuD/ http:/bingle.pkuD/FTP星空搜索 HYPERlink /ftpsearch/search.html /ftpsearch/search.html真它搜索引擎Usenet Search Engine（新闻论坛搜索弓|擎） HYPERlink / /YellowPage Search EngineWhitePage Search Engine网络学术资源导航建立：文献资源服务单位、教学或科学研究单位 以及学术组织机构的导航网站；特点：与搜索引擎的区别针对性学术性规范化美国加州图书馆的LII导航系统网址：http:/Information You Can Trust.”包
32、括艺术人文、商业金融等14个大类上 百个子类的学科导航，收集了超过12,000 个internet站点可以免费定购它的“New This Week from LU”资源选择标准收集的站点都经过严格的选择、评估收集范围：收录高质量的，有学术意义内 容独特的站点。选择的5个标准:Availability, Credibility, Authorship,External links ,Legality评估的6个标准:Authority , Scope and Audience, Content, Design , Function , Shelf LifeLibrarians Index to t
33、he bit er netii. rgInformation You Can TrustaboutSubscribeSuggest d SiteComments More Search ToolsI digit al librarySEARCH ULQRG |Adranc：Rd SearchArts, Crafts, & HumanitiesArts. History.以,Music.More.,.Business, Finance, & Jobs inyestinQj Job UGtingG/ Monoy) Small BuMings与j More.匚ducdlion & Libraries
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36、SacuitvStuck & Commodity FxchdnqesStacksntura (力citcl aHomLibrarians1 Index T* CPsubscribet。the InternetA-lL fL好“搬peInformation Ybu Can TrustMore 5earch Too|sa lI.|Auct ionsSEARCH LI】ORG | Advanced 5R3nzhResults for auctions 1 io 6 of 6Top 9 ub，QCtBQchnrns & Buttmfi以IdsWeb site of company of apprais
37、ers and auctioneers, in business since 1865.Features mdude upcoming sales with photos, preu呛w ctotes, sale dates, and estimated presate /alue; auctions, appraisal services; and instructions for onfcne subrnission of photos and descriptions for appraisal.htt。： wv，/,butrrf-ldsuom/Subjects Auctions | A
38、ntiquESCreated by jm - last updated Nov 9, 2003 - comment on this recordChristiesThe site of this farwus and exduslve auction house features Information about upcoming auctions, locations of Christies auction xuses. information about getting appraisals, buying,布nd selling with Chnsties. You may also
39、 visit a 一 a 01Infominehttp: /INFOMINE是为大学教师、学生和研究人员建 立的网络学术资源虚拟图书馆。它拥有电子期刊、电子图书、公告栏、邮件列 表、图书馆在线目录、研究人员人名录，以及 其他类型的信息资源11万多个。INFOMINE对所有用户免费开放，但是它提供 的资源站点并不都是免费的，能否免费使用， 取决于用户所在的图书馆是否拥有该资源的使 用权。INFOMINEScholarly Internet Resource Collections117.024 Acddefiiic4llySourcesSoaroh foriGOA(1uncrl Search I
40、 Score* Tip*OfhMTq。卜G*c，di X八8IHF OMIHfAh9qt INf OMINf户UM，SNaQ 口f -O tCM IMF OVINE Th Rogonto of ：tia Urtvaeftp or C JlifomljGya.Eam。tr.e 31f UnSeMol JlHom”，Rl-M4 nd HPSIScholarly I mor not Rosourc CoeioctiontOther kHch oc4 mQ 1S94 NFOW NC. T*i R*q，sbc W Uhh-r*it，*YCAliteinUSearch for： labbey, rdwar