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Documento Completo Descargar Archivo b ib l io t e c a FAC. DE INFORMÁTICA U.N.L.P. UNIVERSIDAD DE BUENOS AIRES SISTEMAS DE HALLAZGO Y RECUPERACION DE RECURSOS EN INTERNET Archie, Gopher, Judhead, Kis, Netfind, Prospero, Veronica, Wais, WWW Tesis presentada en la Facultad de Ciencias Exactasy Naturales Departamento de Computación Por Cecilia Marcela SARMIENTO LU 0116/84 Directores: Lic Javier DIAZ - UNIVERSIDAD DE LA PLATA Lic. Roberto BEVILACQUA - UNIVERSIDAD DE BUENOS AIRES Diciembre de 1994 b ib l io t e c a FAC. DE INFORMÁTICA U.N.L.P. S istem a s rfe Hallazgo y Recuperación de Recursos en Internet Tabla de Contenido RESUMEN ABSTRACT.. n ALCANCES . »»»»»»»«♦♦»»— »»»M M »M »M M »»M »»»»M »»M ««M »M M »»M M M »»»»»M »»»M »M M »»»»»— »»»»•— »»••♦— »»»»»»»»»»»M M M »»»M »»»»»M M »»M »MM— » — »»»» m MOTIVACIÓN • »»»»»♦»— »M M »»»»»»»»»»»»»»»»— »»♦»»•«♦»»»M »»»M M »»«M M »M »»»»»»»»»»»»»M »»»»»»M »M »M »»»»M »»»»»»M »»»»»— »»— »»»♦»»»»»» — »MM»» — VI ANTECEDENTES. ______ »»»♦»»♦»»♦♦M »»»»»»»»»»»»»«M »»»»»»»»— »»»»»»»»»»»»»»»♦»»♦»»— »»»»»»»»»»»»»M »»»»»»»»»»»»»— »»»»»»»»»»»»»»»»M »»M »»M»MM»»— »»»» VI INTRODUCCIÓN M »M »M »M »»»»»»»»»»»»»»»»— M M»»M»M »»M »MM M»»M »»»»»»»»»»»»— »»M »»M »»»»»»M »»»»M »»»M M »»M »M »M »»»»»M »»»M »»»»»MIM»MM— — VI C A P ÍT U L O I _________________________________________________________________________________ 1 WHOIS - NETFIND - KIS - PROSPERO........................................................................................................................ 1 WHOIS......................................................................................................................................................................... 1 Como acceder a la base de datos Whois .................................................................................................. 1 Via unc lie n te ........................................................................................................................................................................2 Via telnet............................................................................................................................................................................... 4 Via correo electrónico ...........................................................................................................................................................4 Que información nos ofrece ................................................................................................................... 4 K1S (Knowbot Information Server) ...........................................................................................................5 Netfind............................ 9 Como funciona.................................................................................................................................. 10 Cecilia Marcela Sarmiento Tabla de Contenido Sistemas de Hallazgo y Recuperación de Recurso* en Internet P rospero 13 CAPITULO I I »•«••••••♦••«••I 15 ARCHIE. 15 Como Tr a b aja....................................................................................................................................... 16 A rquitectura........................................................................................ 18 Como a c c ed er...................................................................................................................................... 20 Via telnet .................... 20 Vìa un Cliente ............. 23 Via correo electrónico 24 CAPÍTULO III. 26 GOPHER 26 M odelo d é l o s Da t o s............................. 27 Interface Go p h e r................................. 31 A rquitectura....................................... 32 Protocolo Gopher.................................... 33 E l clien te .................................................. 38 E l servid or................................................ 38 Servidores CSO ...................................... .39 Servidores de búsqueda de texto completo ..40 Conjunto de tipo de items ....................... 40 Protocolo Gopher+ ................................. 41 Servidor Go pher.................................. 42 Cecilia Marcela Sarmiento Tabla de Contenido Sistemas de Hallazgo y Recuperación, de Recursos en Internet Como a c c ed e r.............................................. 42 Via un cliente .............................................................................................................................................................. 42 Via telnet..................................................................................................................................................................... 44- VERONICA...................................................................................... 44* JüGHEAD.............................................................................................................................................. 45 CAPITULO r v »•••••••••••••••••••«••«•••••••••«•••••••••♦•«•••••••••«I 47 WAIS ..... 47 A rquitectura....... .... 47 Protocolo Z39.50. ..... 49 Como Tr a b a ja....... ..... 50 Como a c c ed er...... ..... 51 Via un software cliente ................................... .... 51 l ia G o p h er...................................................... .... 51 lia telnet ........................................................ .... 51 Como realizar una bú sq u ed a....................... ..... 52 Encontrar fuentes apropiadas ....................... .... 52 Buscar un item ................................................ .... 53 Características.......................................... ..... 55 Como acceder a la información .................... .... 55 Relevance Feedback ...................................... .... 55 Selección de los documentos mas adecuados .... 56 CAPITULO V. __ 5* WORLD WIDE WEB ____58 Cecilia Marcela Sarmiento Tabla de Contenido Sistema» de Hallazgo y Recuperation de Recursos en Internet Introducción....................................................................................................................................... 58 Hipertexto, ¿Qué es?.......................................................................................................................... 59 URL: Universal Resource Locator........................................................................................................ 60 ELMODELO DE DATOS.............................................................................................................................. 60 A rquitectura.......................................................................................................................................62 P ro to co lo s......................................................................................................................................... 63 File transfer protocols - FTP ............................................................................................................... 63 N etw ork Nerws Transfer P r o to c o l - N N T P ................................................................................................ 63 Hipertext Transfer Protocol - HTTP ...................................................................................................... 63 Conexión........................................................................................................................................64 Requerimiento................................................................................................................................. 64 Respuesta.......................................................................................................................................64 Desconexión....................................................................................................................................64 Como A c c e d e r..................................................................................................................................... 65 Via software cliente ............................................................................................................................ 65 Via te ln e t.......................................................................................................................................... 66 Via una Interface Gráfica.................................................................................................................... 67 TÉCNICAS DE NAVEGACIÓN Y HERRAMIENTAS................................................................................................... 67 Definir una estructura........................................................................................................................ 67 Mecanismo de historia ........................................................................................................................ 67 In d ice s ................................................................................ 67 Menú de enlaces................................................................................................................................ 68 Una web de índices ............................................................................................................................. 68 La vista del proveedor de información ................................................................................................... 68 Cecilia Marcela Sarmiento Tabla de Contenido Sistemam de Hallazgo 7 Recuperación de Recursos en Internet Servidores..................................................... 70 R elac
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