首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
自考
Searching by keyword is the most common method of using a search engine, but the problem with keywords is the relatively impreci
Searching by keyword is the most common method of using a search engine, but the problem with keywords is the relatively impreci
admin
2017-01-30
29
问题
Searching by keyword is the most common method of using a search engine, but the problem with keywords is the relatively imprecise results and the return of a lot of irrelevant information. Keywords may have more than one meaning and search results may be found only by using a synonym of the keyword. The method of browsing on the other hand takes too much to find the relevant information. Directories like Yahoo try to circumvent the problem, but the manual process of classifying material on the web takes up too much time, resulting in very few search results, as not everything on the web can be classified. Therefore new paradigms of searching are needed as well as new software that is able to categorize web sites automatically.
The majority of search engines come from the United States and has specialized in English resources and information reflecting the American culture. People who do not speak English or who are non-native speakers have therefore many disadvantages on the web.
The centralized approach to information retrieval has extreme difficulty in coping with the multilingual and multi-cultural nature of the information society. The Internet has become a success throughout the world, but the American search engines operate with a US-centric company structure and tend to concentrate upon the English language. Although many search engines have subsidiaries in many other countries, like Japan or Italy, the way the information is presented is the American way and may not reflect the logic of the people who are using it.
National search engines in Russia or France, for example, have to deal with far smaller sets of information and specialize in the cultural and linguistic environments that they know best. Their disadvantage is that the queries are in Russian or French and the search results contain only a small subset of possible results on the web, as they are restricted to the language. This strongly reduces the possibility of using the Web as a source for the worldwide diffusion of information.
Larger search engines, such as Altavista are able to perform multilingual searches, which presents search results in multiple languages. This is good, if the searcher knows all the languages, but if, for example, an Indian finds a Japanese web site on the search topic, this may not be helpful.
Text documents that are in special formats(such as Postscript or Star Office Documents)are unreachable for many search engines, as the textual information is embedded into the binary structure of the particular file format. The same applies to scanned documents, Java applets and video/ audio clips. The content of these file formats is hidden from search engines today. Only if the description of the file format is known and included into the search engine is it possible to add the content for certain document types. This is relatively easy, just a matter of work. Infoseek for example, is able to index the content of Word documents. More difficult is the inclusion of content that is hidden in applications, as there is no way to tell where the information may be hidden.
The research and development in information and data retrieval is aimed at improving the effectiveness and efficiency of retrieval. Individual and parallel development for database management systems has left this sector without a centralized vision and coordination between the different types of search engines. Search engines on the Internet are very specific and not able to cope with multiple database formats and file types. In order to make searches complete a search engine needs to search over text, documents, images, sounds and all other media formats. So the database integration will be the single most important objective for the future of intelligent search engines.
Which of the following is true about the search engines from the U.S.?
选项
A、All of them specialized in English resources and information.
B、They operate with a US-centric company structure and tend to concentrate on various languages.
C、They provide only cultural resources and information.
D、It is not convenient for non-English speakers to use.
答案
D
解析
转载请注明原文地址:https://jikaoti.com/ti/tvBfFFFM
本试题收录于:
电子商务英语题库经管类分类
0
电子商务英语
经管类
相关试题推荐
__________,即为了生产、取得利润而购买的个人和企业所构成的市场。
某单位招聘考试需要考核数学、英语、计算机三门课程,其录取规则如下:(1)总分240分以上(含)录取。(2)总分在240~180之间,如果数学和英语成绩均在60分以上(含)需要参加面试;如果数学或英语中只有1门成绩在60分以
searchengines
Musicwhichisoriginalisindividualandpersonal.Thatistosay,itcanbeidentifiedasbelongingtoaparticularcomposer.
businessprocessre-engineering(BPR)
searchengine
Foraclearerpictureofwhatthestudentknows,mostteachersuseanotherkindofexaminationinadditiontoobjectivetests.T
Accordingtothenewschoolofscientists,technologyisanoverlookedforceinexpandingthehorizonsofscientificknowledge.【
Accordingtothenewschoolofscientists,technologyisanoverlookedforceinexpandingthehorizonsofscientificknowledge.【
Accordingtothenewschoolofscientists,technologyisanoverlookedforceinexpandingthehorizonsofscientificknowledge.【
随机试题
社会主义“四有”新人的四有是指有理想、有文化、有纪律及
冯女士,第一孕,妊娠40周,初产妇。临产6小时,宫口开大3cm;临产11小时,宫口开全,先露头,先露“0”,胎心正常。阴道检查后,听诊胎心:164次/min,应立即
精血津液“得温而行,得寒而凝”,反映了气的哪项作用
根据《中华人民共和国药品管理法实施条例》,中药饮片的标签不需注明的内容是
法院受理叶某涉嫌故意杀害郭某案后,发现其可能符合强制医疗条件。经鉴定,叶某属于依法不负刑事责任的精神病人,法院审理后判决宣告叶某不负刑事责任,同时作出对叶某强制医疗的决定。关于此案的救济程序,下列哪一选项是错误的?
(2017年第17题)图示结构横截面尺寸相同时,A点竖向位移最大的是()。
把电力变压器的(),用电压表测出高压和低压绕组的端电压,高压侧与低压侧电压之比即为变压器变比。
我国出口某货物,成交价格为费城US$1000(折合人民币8500元),已知运费折算为1500元人民币,保费为50元人民币,出口税率为15%,则海关应征关税税额为()。
在国际期货市场上,保证金制度一般具有的特点包括()。
某气泡由湖底向湖面运动,已知湖水越深温度越低,如果水的阻力不计,那么它的运动情况是()。
最新回复
(
0
)