Elementos teórico-prácticos útiles para comprender el uso de los motores de búsqueda en Internet

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Abstract

Con el objetivo de presentar un conjunto de elementos teóricos y prácticos, útiles para conocer el funcionamiento de los llamados motores de búsqueda en Internet, se revisó la literatura existente en la red sobre el tema mediante los conocidos buscadores Google, Infoseek, WebCrawler, entre otros. Se presentan las características generales de los motores de búsqueda y sus componentes, con un énfasis especial en el empleo de los operadores booleanos y su utilización en cada uno de los motores estudiados para realizar búsquedas de diferentes grados de complejidad.

Translated abstract

Aimed at introducing a group of useful theoric and practical elements to understand the functioning of search engines in Internet, a review of the literature on this topic was carried out using the well known searchers: Google, Infoseek, MetaCrawler among others..The main features of search engines and its components are presented, with special emphasis in the use of boolean operators and its use in every search engine studied to carry out information search with various degrees of complexity.

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Most cited references 12

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Accessibility of information on the web.

S Lawrence, C L Giles (1999)

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Quality of web-based medical information on stable COPD: comparison of non-commercial and commercial websites.

Heinke Kunst, Khalid Khan (2002)

The Internet provides an easy and accessible way to deliver medical information about the management of various diseases, both to practitioners and to their patients. As there is no control over who posts information on the Web, there is a risk that the interests of the web producer may bias the quality of information. The quality of medical information on the management of chronic obstructive pulmonary disease (COPD) on the Internet was evaluated, comparing non-commercial and commercial websites. An internet search was conducted to locate relevant websites using a metasearch engine. The quality of websites was scored on a scale of 0-10, based on three items about the credibility of the site and seven items about the accuracy of the information provided by the site. Quality differences between commercial and non-commercial websites were explored. The search revealed 23 relevant websites (12 noncommercial and 11 commercial). The overall quality of non-commercial websites was better than that of commercial websites (median score 7 vs. 4, P = 0.01). Compared to commercial sites, non-commercial websites more often provided information about cessation of smoking (100% vs. 64%, P = 0.03), preventative influenza vaccinations (42% vs. 9%, P = 0.07) and use of long-term oxygen therapy (92% vs. 45%, P = 0.02). Among websites providing information on COPD, commercial sites were much more likely to be of poorer quality compared to sites of non-commercial organizations. In particular, commercial sites do not provide information about simple preventative treatments. There is a need to be vigilant about the quality of health information about COPD on the Internet.

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International use of an academic nephrology World Wide Web site: from medical information resource to business tool.

Thomas R Boal, Ronald Poropatich, C Yuan … (2002)

Studies of the use of the World Wide Web to obtain medical knowledge have largely focused on patients. In particular, neither the international use of academic nephrology World Wide Web sites (websites) as primary information sources nor the use of search engines (and search strategies) to obtain medical information have been described. Visits ("hits") to the Walter Reed Army Medical Center (WRAMC) Nephrology Service website from April 30, 2000, to March 14, 2001, were analyzed for the location of originating source using Webtrends, and search engines (Google, Lycos, etc.) were analyzed manually for search strategies used. From April 30, 2000 to March 14, 2001, the WRAMC Nephrology Service website received 1,007,103 hits and 12,175 visits. These visits were from 33 different countries, and the most frequent regions were Western Europe, Asia, Australia, the Middle East, Pacific Islands, and South America. The most frequent organization using the site was the military Internet system, followed by America Online and automated search programs of online search engines, most commonly Google. The online lecture series was the most frequently visited section of the website. Search strategies used in search engines were extremely technical. The use of "robots" by standard Internet search engines to locate websites, which may be blocked by mandatory registration, has allowed users worldwide to access the WRAMC Nephrology Service website to answer very technical questions. This suggests that it is being used as an alternative to other primary sources of medical information and that the use of mandatory registration may hinder users from finding valuable sites. With current Internet technology, even a single service can become a worldwide information resource without sacrificing its primary customers.