本文選題：Google + Yahoo　； 參考：《北京外國語大學(xué)》2013年碩士論文

【摘要】：搜索引擎評價是推動搜索引擎發(fā)展的關(guān)鍵性技術(shù)。評價搜索引擎有多種方法。本文在搜索引擎評測法Cranfield范式評價法的框架上,根據(jù)搜索引擎相關(guān)性六級評分和DCG方法,對目前阿拉伯國家搜索引擎市場占有率較大的兩個搜索引擎Google和Yahoo的阿拉伯語搜索效果進(jìn)行評測。 搜索引擎評價的相關(guān)研究多是以滿足普通搜索用戶的信息需求作為目的的,但由于搜索用戶對搜索引擎的滿意程度很難被定量地表示,所以目前全世界對搜索引擎的評價通常從搜索引擎的結(jié)果質(zhì)量(Effectiveness)、搜索引擎的效率(Efficiency)和界面(Interface)這三個方面來進(jìn)行,以此來盡可能將用戶對搜索引擎的滿意度來量化,從而發(fā)現(xiàn)搜索引擎系統(tǒng)中存在的主要問題和缺陷以便解決它們來優(yōu)化搜索引擎的性能。 鑒于每個方面的評測方法、評測過程都非一篇碩士論文所能駕馭,因此本文以搜索引擎的結(jié)果質(zhì)量這一較為基礎(chǔ)且核心的點為切入點,對Google和Yahoo的阿拉伯語搜索效果進(jìn)行評測。 對一個互聯(lián)網(wǎng)產(chǎn)品的性能評測不能割裂地來寫,因此本文以Google和Yahoo在阿拉伯國家搜索引擎市場所取得的成就起始并對阿拉伯國家目前本土主要搜索引擎概況做一簡述。 通過第一章,可以了解到Google和Yahoo搜索引擎在阿拉伯國家受眾之廣、產(chǎn)品之多。那么,兩大搜索引擎在阿拉伯國家所占市場份額是否與其搜索引擎的搜索效果相匹配,為了了解這一點,更好地了解這兩大搜索引擎的搜索結(jié)果質(zhì)量究竟如何,第二章和第三章為具體評測部分。由于評測方法比較復(fù)雜,所以需要對搜索引擎工作的一些基本原理、本文使用的搜索引擎的評測方法和原理、以及文中所涉及到的其他相關(guān)理論知識進(jìn)行闡述,本文第二章即為相關(guān)理論及方法的闡釋。第三章為根據(jù)第二章所述評測方法對Google和Yahoo阿拉伯語搜索結(jié)果質(zhì)量維度上進(jìn)行的具體評測和數(shù)據(jù)分析。 通過評測可以發(fā)現(xiàn),Google的阿拉伯語搜索效果比Yahoo好。但是,兩者在結(jié)果質(zhì)量相關(guān)性上的差距并沒有我們之前想象中的那么大。甚至在為數(shù)不少的結(jié)果中,Yahoo的表現(xiàn)要比Google好。Google和Yahoo在阿拉伯語搜索結(jié)果質(zhì)量上都有可以改進(jìn)之處。Yahoo主要在低質(zhì)頁面的識別、網(wǎng)站權(quán)威度、時效性、頁面內(nèi)容豐富度、無效資源識別上不如Google,而Google雖然在這幾方面表現(xiàn)得比Yahoo好,但也不能杜絕這幾種情況。Google的主要問題在于過度將部分網(wǎng)站的排名排在前三位結(jié)果中,一定程度上影響了用戶滿意度。 通過對Google和Yahoo阿拉伯語搜索結(jié)果質(zhì)量的評測,可以看到Google和Yahoo的阿拉伯語搜索引擎技術(shù)還有較大的優(yōu)化和發(fā)展空間。因此,本文最后一章承接前一章這一結(jié)論,闡述了阿拉伯語搜索引擎市場的巨大潛力,并對評測過程中發(fā)現(xiàn)的阿拉伯網(wǎng)站的特點做一簡單總結(jié),希望能夠?qū)?jīng)常瀏覽阿拉伯語網(wǎng)頁、獲取阿拉伯語信息的人士有所助益。
[Abstract]:Search engine evaluation is the key technology to promote the development of search engine. There are many ways to evaluate search engines. In this paper, based on the framework of search engine evaluation method Cranfield normal form evaluation method, according to search engine relevance six grades and DCG method, This paper evaluates the Arabic search results of Google and Yahoo, two search engines with large market share in Arab countries. Most of the research on search engine evaluation is aimed at satisfying the information needs of ordinary search users, but the degree of satisfaction of search engine users is difficult to express quantitatively. So at present, the evaluation of search engines around the world is usually carried out from three aspects: the quality of search engines' results, efficiency of search engines and interfaces, so as to quantify the users' satisfaction with search engines as much as possible. The main problems and defects in search engine system are found in order to solve them to optimize the performance of search engine. In view of the evaluation method of each aspect, the evaluation process is beyond the control of a master's thesis, so this paper evaluates the Arabic search effect of Google and Yahoo based on the basic and core point of search engine result quality. This paper begins with the achievements of Google and Yahoo in the search engine market of Arab countries and gives a brief overview of the main search engines in the Arab countries. Through the first chapter, we can learn that Google and Yahoo search engines have a wide audience and many products in Arab countries. Well, in order to understand whether the market share of the two major search engines in the Arab countries matches the search results of their search engines, in order to better understand the quality of the search results of the two major search engines, The second and third chapters are the specific evaluation part. Because of the complexity of evaluation methods, it is necessary to expound some basic principles of search engine work, the evaluation methods and principles of search engine used in this paper, and other relevant theoretical knowledge involved in this paper. The second chapter is the explanation of relevant theories and methods. The third chapter is the concrete evaluation and data analysis of the quality dimension of Google and Yahoo Arabic search results according to the evaluation methods described in Chapter 2. A review shows that Google's Arabic search results are better than Yahoo's. However, the difference in the quality of the results is not as large as we thought. Even in a number of results, Yahoo performs better than Google. Google and Yahoo can improve the quality of Arabic search results. Yahoo is mainly in the identification of low-quality pages, site authority, timeliness, page content richness. Invalid resource identification is not as good as Google's, and Google does better than Yahoo in several areas, but the main problem with Google is that it over-ranks some sites in the top three results. To some extent, the impact of user satisfaction. By evaluating the quality of Google and Yahoo Arabic search results, we can see that the Arabic search engine technology of Google and Yahoo still has great space for optimization and development. Therefore, the last chapter of this paper follows the conclusion of the previous chapter, expounds the great potential of the Arabic search engine market, and makes a brief summary of the characteristics of the Arab websites found in the course of evaluation. Hope to be able to often visit Arabic pages, access to Arabic information to help.
【學(xué)位授予單位】：北京外國語大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：G354;H37

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本文編號：1852133