-
Leighton, H.V.; Srivastava, J.: First 20 precision among World Wide Web search services (search engines) (1999)
0.11
0.11197935 = product of:
0.16796902 = sum of:
0.1321281 = weight(_text_:wide in 4309) [ClassicSimilarity], result of:
0.1321281 = score(doc=4309,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.5874411 = fieldWeight in 4309, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.09375 = fieldNorm(doc=4309)
0.035840917 = product of:
0.071681835 = sum of:
0.071681835 = weight(_text_:web in 4309) [ClassicSimilarity], result of:
0.071681835 = score(doc=4309,freq=2.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.43268442 = fieldWeight in 4309, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.09375 = fieldNorm(doc=4309)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Agata, T.: ¬A measure for evaluating search engines on the World Wide Web : retrieval test with ESL (Expected Search Length) (1997)
0.11
0.11197935 = product of:
0.16796902 = sum of:
0.1321281 = weight(_text_:wide in 3892) [ClassicSimilarity], result of:
0.1321281 = score(doc=3892,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.5874411 = fieldWeight in 3892, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.09375 = fieldNorm(doc=3892)
0.035840917 = product of:
0.071681835 = sum of:
0.071681835 = weight(_text_:web in 3892) [ClassicSimilarity], result of:
0.071681835 = score(doc=3892,freq=2.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.43268442 = fieldWeight in 3892, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.09375 = fieldNorm(doc=3892)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Gordon, M.; Pathak, P.: Finding information on the World Wide Web : the retrieval effectiveness of search engines. (1999)
0.11
0.11197935 = product of:
0.16796902 = sum of:
0.1321281 = weight(_text_:wide in 3941) [ClassicSimilarity], result of:
0.1321281 = score(doc=3941,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.5874411 = fieldWeight in 3941, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.09375 = fieldNorm(doc=3941)
0.035840917 = product of:
0.071681835 = sum of:
0.071681835 = weight(_text_:web in 3941) [ClassicSimilarity], result of:
0.071681835 = score(doc=3941,freq=2.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.43268442 = fieldWeight in 3941, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.09375 = fieldNorm(doc=3941)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Drabenstott, K.M.: Web search strategies (2000)
0.11
0.11141972 = product of:
0.16712958 = sum of:
0.044042703 = weight(_text_:wide in 1188) [ClassicSimilarity], result of:
0.044042703 = score(doc=1188,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.1958137 = fieldWeight in 1188, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.03125 = fieldNorm(doc=1188)
0.12308688 = sum of:
0.09557578 = weight(_text_:web in 1188) [ClassicSimilarity], result of:
0.09557578 = score(doc=1188,freq=32.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.5769126 = fieldWeight in 1188, product of:
5.656854 = tf(freq=32.0), with freq of:
32.0 = termFreq=32.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.03125 = fieldNorm(doc=1188)
0.027511096 = weight(_text_:22 in 1188) [ClassicSimilarity], result of:
0.027511096 = score(doc=1188,freq=2.0), product of:
0.17776565 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.050763648 = queryNorm
0.15476047 = fieldWeight in 1188, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03125 = fieldNorm(doc=1188)
0.6666667 = coord(2/3)
- Abstract
- Surfing the World Wide Web used to be cool, dude, real cool. But things have gotten hot - so hot that finding something useful an the Web is no longer cool. It is suffocating Web searchers in the smoke and debris of mountain-sized lists of hits, decisions about which search engines they should use, whether they will get lost in the dizzying maze of a subject directory, use the right syntax for the search engine at hand, enter keywords that are likely to retrieve hits an the topics they have in mind, or enlist a browser that has sufficient functionality to display the most promising hits. When it comes to Web searching, in a few short years we have gone from the cool image of surfing the Web into the frying pan of searching the Web. We can turn down the heat by rethinking what Web searchers are doing and introduce some order into the chaos. Web search strategies that are tool-based-oriented to specific Web searching tools such as search en gines, subject directories, and meta search engines-have been widely promoted, and these strategies are just not working. It is time to dissect what Web searching tools expect from searchers and adjust our search strategies to these new tools. This discussion offers Web searchers help in the form of search strategies that are based an strategies that librarians have been using for a long time to search commercial information retrieval systems like Dialog, NEXIS, Wilsonline, FirstSearch, and Data-Star.
- Content
- "Web searching is different from searching commercial IR systems. We can learn from search strategies recommended for searching IR systems, but most won't be effective for Web searching. Web searchers need strate gies that let search engines do the job they were designed to do. This article presents six new Web searching strategies that do just that."
- Date
- 22. 9.1997 19:16:05
-
Chang, C.-H.; Hsu, C.-C.: Customizable multi-engine search tool with clustering (1997)
0.11
0.11135571 = product of:
0.16703355 = sum of:
0.07707474 = weight(_text_:wide in 2670) [ClassicSimilarity], result of:
0.07707474 = score(doc=2670,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.342674 = fieldWeight in 2670, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.0546875 = fieldNorm(doc=2670)
0.08995882 = sum of:
0.041814405 = weight(_text_:web in 2670) [ClassicSimilarity], result of:
0.041814405 = score(doc=2670,freq=2.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.25239927 = fieldWeight in 2670, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.0546875 = fieldNorm(doc=2670)
0.048144415 = weight(_text_:22 in 2670) [ClassicSimilarity], result of:
0.048144415 = score(doc=2670,freq=2.0), product of:
0.17776565 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.050763648 = queryNorm
0.2708308 = fieldWeight in 2670, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=2670)
0.6666667 = coord(2/3)
- Date
- 1. 8.1996 22:08:06
- Footnote
- Contribution to a special issue of papers from the 6th International World Wide Web conference, held 7-11 Apr 1997, Santa Clara, California
-
Lawrence, S.; Giles, C.L.: Inquirus, the NECI meta search engine (1998)
0.11
0.11135571 = product of:
0.16703355 = sum of:
0.07707474 = weight(_text_:wide in 3604) [ClassicSimilarity], result of:
0.07707474 = score(doc=3604,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.342674 = fieldWeight in 3604, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.0546875 = fieldNorm(doc=3604)
0.08995882 = sum of:
0.041814405 = weight(_text_:web in 3604) [ClassicSimilarity], result of:
0.041814405 = score(doc=3604,freq=2.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.25239927 = fieldWeight in 3604, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.0546875 = fieldNorm(doc=3604)
0.048144415 = weight(_text_:22 in 3604) [ClassicSimilarity], result of:
0.048144415 = score(doc=3604,freq=2.0), product of:
0.17776565 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.050763648 = queryNorm
0.2708308 = fieldWeight in 3604, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=3604)
0.6666667 = coord(2/3)
- Date
- 1. 8.1996 22:08:06
- Footnote
- Contribution to a special issue devoted to the Proceedings of the 7th International World Wide Web Conference, held 14-18 April 1998, Brisbane, Australia
-
Heery, R.: Information gateways : collaboration and content (2000)
0.11
0.11135571 = product of:
0.16703355 = sum of:
0.07707474 = weight(_text_:wide in 4866) [ClassicSimilarity], result of:
0.07707474 = score(doc=4866,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.342674 = fieldWeight in 4866, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.0546875 = fieldNorm(doc=4866)
0.08995882 = sum of:
0.041814405 = weight(_text_:web in 4866) [ClassicSimilarity], result of:
0.041814405 = score(doc=4866,freq=2.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.25239927 = fieldWeight in 4866, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.0546875 = fieldNorm(doc=4866)
0.048144415 = weight(_text_:22 in 4866) [ClassicSimilarity], result of:
0.048144415 = score(doc=4866,freq=2.0), product of:
0.17776565 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.050763648 = queryNorm
0.2708308 = fieldWeight in 4866, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=4866)
0.6666667 = coord(2/3)
- Abstract
- Information subject gateways provide targeted discovery services for their users, giving access to Web resources selected according to quality and subject coverage criteria. Information gateways recognise that they must collaborate on a wide range of issues relating to content to ensure continued success. This report is informed by discussion of content activities at the 1999 Imesh Workshop. The author considers the implications for subject based gateways of co-operation regarding coverage policy, creation of metadata, and provision of searching and browsing across services. Other possibilities for co-operation include working more closely with information providers, and diclosure of information in joint metadata registries
- Date
- 22. 6.2002 19:38:54
-
Raisch, M.J.: ¬The wide world of the World-Wide Web : A description of Web browsers and search engines (1996)
0.11
0.110638075 = product of:
0.16595711 = sum of:
0.124571584 = weight(_text_:wide in 7473) [ClassicSimilarity], result of:
0.124571584 = score(doc=7473,freq=4.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.5538448 = fieldWeight in 7473, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.0625 = fieldNorm(doc=7473)
0.041385528 = product of:
0.082771055 = sum of:
0.082771055 = weight(_text_:web in 7473) [ClassicSimilarity], result of:
0.082771055 = score(doc=7473,freq=6.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.49962097 = fieldWeight in 7473, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.0625 = fieldNorm(doc=7473)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- Reviews the strucutre and application of the following tools for searching the WWW: Web browsers (using Netscape and Lynx as examples); Internet search engines (Hotbot, AltaVista, InfoSeek, Lycos and WebCrawler); and indexes or categorizers and former Gophers
-
Falk, H.: World Wide Web search and retrieval (1997)
0.10
0.1015638 = product of:
0.15234569 = sum of:
0.110106766 = weight(_text_:wide in 6815) [ClassicSimilarity], result of:
0.110106766 = score(doc=6815,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.48953426 = fieldWeight in 6815, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.078125 = fieldNorm(doc=6815)
0.04223893 = product of:
0.08447786 = sum of:
0.08447786 = weight(_text_:web in 6815) [ClassicSimilarity], result of:
0.08447786 = score(doc=6815,freq=4.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.5099235 = fieldWeight in 6815, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.078125 = fieldNorm(doc=6815)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- Lists and briefly describes the range of facilities available for searching the WWW, such as search engines, link-following packages and content delivery services. Includes web site information (URLs) with each product and service reviewed
-
World Wide Web search engines : Inktomi Corporation (1996)
0.09
0.09331613 = product of:
0.13997419 = sum of:
0.110106766 = weight(_text_:wide in 898) [ClassicSimilarity], result of:
0.110106766 = score(doc=898,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.48953426 = fieldWeight in 898, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.078125 = fieldNorm(doc=898)
0.029867431 = product of:
0.059734862 = sum of:
0.059734862 = weight(_text_:web in 898) [ClassicSimilarity], result of:
0.059734862 = score(doc=898,freq=2.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.36057037 = fieldWeight in 898, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.078125 = fieldNorm(doc=898)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Machovec, G.S.: World Wide Web search engines : Open Text, Harvest, 2ASK (1996)
0.09
0.09331613 = product of:
0.13997419 = sum of:
0.110106766 = weight(_text_:wide in 5790) [ClassicSimilarity], result of:
0.110106766 = score(doc=5790,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.48953426 = fieldWeight in 5790, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.078125 = fieldNorm(doc=5790)
0.029867431 = product of:
0.059734862 = sum of:
0.059734862 = weight(_text_:web in 5790) [ClassicSimilarity], result of:
0.059734862 = score(doc=5790,freq=2.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.36057037 = fieldWeight in 5790, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.078125 = fieldNorm(doc=5790)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Olvera Lobo, M.D.: Rendimiento de los sistemas de recuperacion de informacion en al World Wide Web : revision metodologica (2000)
0.09
0.09331613 = product of:
0.13997419 = sum of:
0.110106766 = weight(_text_:wide in 3448) [ClassicSimilarity], result of:
0.110106766 = score(doc=3448,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.48953426 = fieldWeight in 3448, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.078125 = fieldNorm(doc=3448)
0.029867431 = product of:
0.059734862 = sum of:
0.059734862 = weight(_text_:web in 3448) [ClassicSimilarity], result of:
0.059734862 = score(doc=3448,freq=2.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.36057037 = fieldWeight in 3448, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.078125 = fieldNorm(doc=3448)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
¬Die Stecknadel im Heuhaufen finden (1999)
0.09
0.09331613 = product of:
0.13997419 = sum of:
0.110106766 = weight(_text_:wide in 4028) [ClassicSimilarity], result of:
0.110106766 = score(doc=4028,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.48953426 = fieldWeight in 4028, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.078125 = fieldNorm(doc=4028)
0.029867431 = product of:
0.059734862 = sum of:
0.059734862 = weight(_text_:web in 4028) [ClassicSimilarity], result of:
0.059734862 = score(doc=4028,freq=2.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.36057037 = fieldWeight in 4028, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.078125 = fieldNorm(doc=4028)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- Wer im gigantischen Info-Depot des World-Wide Web fündig werden will, braucht zuverlässige Suchdienste. Im Internet gibt es davon Hunderte - hier die wichtigsten
-
Herrera-Viedma, E.; Pasi, G.: Soft approaches to information retrieval and information access on the Web : an introduction to the special topic section (2006)
0.09
0.0927574 = product of:
0.13913609 = sum of:
0.044042703 = weight(_text_:wide in 5285) [ClassicSimilarity], result of:
0.044042703 = score(doc=5285,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.1958137 = fieldWeight in 5285, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.03125 = fieldNorm(doc=5285)
0.095093384 = sum of:
0.06758229 = weight(_text_:web in 5285) [ClassicSimilarity], result of:
0.06758229 = score(doc=5285,freq=16.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.4079388 = fieldWeight in 5285, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.03125 = fieldNorm(doc=5285)
0.027511096 = weight(_text_:22 in 5285) [ClassicSimilarity], result of:
0.027511096 = score(doc=5285,freq=2.0), product of:
0.17776565 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.050763648 = queryNorm
0.15476047 = fieldWeight in 5285, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03125 = fieldNorm(doc=5285)
0.6666667 = coord(2/3)
- Abstract
- The World Wide Web is a popular and interactive medium used to collect, disseminate, and access an increasingly huge amount of information, which constitutes the mainstay of the so-called information and knowledge society. Because of its spectacular growth, related to both Web resources (pages, sites, and services) and number of users, the Web is nowadays the main information repository and provides some automatic systems for locating, accessing, and retrieving information. However, an open and crucial question remains: how to provide fast and effective retrieval of the information relevant to specific users' needs. This is a very hard and complex task, since it is pervaded with subjectivity, vagueness, and uncertainty. The expression soft computing refers to techniques and methodologies that work synergistically with the aim of providing flexible information processing tolerant of imprecision, vagueness, partial truth, and approximation. So, soft computing represents a good candidate to design effective systems for information access and retrieval on the Web. One of the most representative tools of soft computing is fuzzy set theory. This special topic section collects research articles witnessing some recent advances in improving the processes of information access and retrieval on the Web by using soft computing tools, and in particular, by using fuzzy sets and/or integrating them with other soft computing tools. In this introductory article, we first review the problem of Web retrieval and the concept of soft computing technology. We then briefly introduce the articles in this section and conclude by highlighting some future research directions that could benefit from the use of soft computing technologies.
- Date
- 22. 7.2006 16:59:33
- Footnote
- Beitrag in einer Special Topic Section on Soft Approaches to Information Retrieval and Information Access on the Web
-
Wolff, C.: Effektivität von Recherchen im WWW : Vergleichende Evaluierung von such- und Metasuchmaschinen (2000)
0.09
0.09237826 = product of:
0.13856739 = sum of:
0.10900013 = weight(_text_:wide in 5463) [ClassicSimilarity], result of:
0.10900013 = score(doc=5463,freq=4.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.4846142 = fieldWeight in 5463, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.0546875 = fieldNorm(doc=5463)
0.02956725 = product of:
0.0591345 = sum of:
0.0591345 = weight(_text_:web in 5463) [ClassicSimilarity], result of:
0.0591345 = score(doc=5463,freq=4.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.35694647 = fieldWeight in 5463, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.0546875 = fieldNorm(doc=5463)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- Der vorliegende Beitrag befasst sich mit der Informationssuche im World Wide Web und ihrer Evaluierung. Ausgehend von einer Zusammenschau der wesentlichen Merkmale des World Wide Web als heterogener Dokumentkollektion (Kap. 1) werden Aufbau und Merkmale von Suchmaschinen und Metasuchmaschinen eingeführt sowie die Problematik der Evaluierung von Suchmaschinen und eine Übersicht bisheriger Ergebnisse diskutiert (Kap. 2). In Kap. 3 werden Aufbau, Durchführung und Ergebnisse einer Vergleichstudie vorgestellt, bei der mit Hilfe eines paper-and-pencil-Experiments ausgewählte Such- und Metasuchmaschinen evaluiert wurden. Schließlich zieht Kap. 4 Schlussfolgerungen aus dieser Studie und gibt einen Ausblick auf Optimierungsmöglichkeiten für Suchmaschinen
-
Milonas, E.: ¬The use of facets in Web search engines
0.09
0.088259995 = product of:
0.13238999 = sum of:
0.07707474 = weight(_text_:wide in 3545) [ClassicSimilarity], result of:
0.07707474 = score(doc=3545,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.342674 = fieldWeight in 3545, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.0546875 = fieldNorm(doc=3545)
0.05531526 = product of:
0.11063052 = sum of:
0.11063052 = weight(_text_:web in 3545) [ClassicSimilarity], result of:
0.11063052 = score(doc=3545,freq=14.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.6677857 = fieldWeight in 3545, product of:
3.7416575 = tf(freq=14.0), with freq of:
14.0 = termFreq=14.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.0546875 = fieldNorm(doc=3545)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- The World Wide Web consists of a plethora of information that a Web searcher can retrieve via Web search engines such as Google. These Web search engines display an insurmountable amount of information in a seemingly unorganized linear format. Recently, some Web search engines have incorporated facets or terms alongside the linear display allowing the searcher the ability to narrow search results. The goal of this study is to examine the use of facets in these Web search engines.
-
Jansen, B.J.; Spink, A.: How are we searching the World Wide Web? : A comparison of nine search engine transaction logs (2006)
0.09
0.08780101 = product of:
0.13170151 = sum of:
0.07785724 = weight(_text_:wide in 968) [ClassicSimilarity], result of:
0.07785724 = score(doc=968,freq=4.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.34615302 = fieldWeight in 968, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.0390625 = fieldNorm(doc=968)
0.053844277 = product of:
0.10768855 = sum of:
0.10768855 = weight(_text_:web in 968) [ClassicSimilarity], result of:
0.10768855 = score(doc=968,freq=26.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.65002745 = fieldWeight in 968, product of:
5.0990195 = tf(freq=26.0), with freq of:
26.0 = termFreq=26.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.0390625 = fieldNorm(doc=968)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- The Web and especially major Web search engines are essential tools in the quest to locate online information for many people. This paper reports results from research that examines characteristics and changes in Web searching from nine studies of five Web search engines based in the US and Europe. We compare interactions occurring between users and Web search engines from the perspectives of session length, query length, query complexity, and content viewed among the Web search engines. The results of our research shows (1) users are viewing fewer result pages, (2) searchers on US-based Web search engines use more query operators than searchers on European-based search engines, (3) there are statistically significant differences in the use of Boolean operators and result pages viewed, and (4) one cannot necessary apply results from studies of one particular Web search engine to another Web search engine. The wide spread use of Web search engines, employment of simple queries, and decreased viewing of result pages may have resulted from algorithmic enhancements by Web search engine companies. We discuss the implications of the findings for the development of Web search engines and design of online content.
-
Boldi, P.; Santini, M.; Vigna, S.: PageRank as a function of the damping factor (2005)
0.09
0.08778745 = product of:
0.13168117 = sum of:
0.055053383 = weight(_text_:wide in 2564) [ClassicSimilarity], result of:
0.055053383 = score(doc=2564,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.24476713 = fieldWeight in 2564, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.0390625 = fieldNorm(doc=2564)
0.0766278 = sum of:
0.04223893 = weight(_text_:web in 2564) [ClassicSimilarity], result of:
0.04223893 = score(doc=2564,freq=4.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.25496176 = fieldWeight in 2564, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.0390625 = fieldNorm(doc=2564)
0.03438887 = weight(_text_:22 in 2564) [ClassicSimilarity], result of:
0.03438887 = score(doc=2564,freq=2.0), product of:
0.17776565 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.050763648 = queryNorm
0.19345059 = fieldWeight in 2564, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=2564)
0.6666667 = coord(2/3)
- Abstract
- PageRank is defined as the stationary state of a Markov chain. The chain is obtained by perturbing the transition matrix induced by a web graph with a damping factor alpha that spreads uniformly part of the rank. The choice of alpha is eminently empirical, and in most cases the original suggestion alpha=0.85 by Brin and Page is still used. Recently, however, the behaviour of PageRank with respect to changes in alpha was discovered to be useful in link-spam detection. Moreover, an analytical justification of the value chosen for alpha is still missing. In this paper, we give the first mathematical analysis of PageRank when alpha changes. In particular, we show that, contrarily to popular belief, for real-world graphs values of alpha close to 1 do not give a more meaningful ranking. Then, we give closed-form formulae for PageRank derivatives of any order, and an extension of the Power Method that approximates them with convergence O(t**k*alpha**t) for the k-th derivative. Finally, we show a tight connection between iterated computation and analytical behaviour by proving that the k-th iteration of the Power Method gives exactly the PageRank value obtained using a Maclaurin polynomial of degree k. The latter result paves the way towards the application of analytical methods to the study of PageRank.
- Date
- 16. 1.2016 10:22:28
- Source
- http://vigna.di.unimi.it/ftp/papers/PageRankAsFunction.pdf [Proceedings of the ACM World Wide Web Conference (WWW), 2005]
-
Bar-Ilan, J.: ¬The use of Web search engines in information science research (2003)
0.08
0.083666325 = product of:
0.12549949 = sum of:
0.06606405 = weight(_text_:wide in 4271) [ClassicSimilarity], result of:
0.06606405 = score(doc=4271,freq=2.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.29372054 = fieldWeight in 4271, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.046875 = fieldNorm(doc=4271)
0.059435442 = product of:
0.118870884 = sum of:
0.118870884 = weight(_text_:web in 4271) [ClassicSimilarity], result of:
0.118870884 = score(doc=4271,freq=22.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.717526 = fieldWeight in 4271, product of:
4.690416 = tf(freq=22.0), with freq of:
22.0 = termFreq=22.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.046875 = fieldNorm(doc=4271)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- The World Wide Web was created in 1989, but it has already become a major information channel and source, influencing our everyday lives, commercial transactions, and scientific communication, to mention just a few areas. The seventeenth-century philosopher Descartes proclaimed, "I think, therefore I am" (cogito, ergo sum). Today the Web is such an integral part of our lives that we could rephrase Descartes' statement as "I have a Web presence, therefore I am." Because many people, companies, and organizations take this notion seriously, in addition to more substantial reasons for publishing information an the Web, the number of Web pages is in the billions and growing constantly. However, it is not sufficient to have a Web presence; tools that enable users to locate Web pages are needed as well. The major tools for discovering and locating information an the Web are search engines. This review discusses the use of Web search engines in information science research. Before going into detail, we should define the terms "information science," "Web search engine," and "use" in the context of this review.
-
Das, A.; Jain, A.: Indexing the World Wide Web : the journey so far (2012)
0.08
0.08297856 = product of:
0.124467835 = sum of:
0.093428686 = weight(_text_:wide in 95) [ClassicSimilarity], result of:
0.093428686 = score(doc=95,freq=4.0), product of:
0.22492146 = queryWeight, product of:
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.050763648 = queryNorm
0.4153836 = fieldWeight in 95, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.4307585 = idf(docFreq=1430, maxDocs=44218)
0.046875 = fieldNorm(doc=95)
0.031039147 = product of:
0.062078293 = sum of:
0.062078293 = weight(_text_:web in 95) [ClassicSimilarity], result of:
0.062078293 = score(doc=95,freq=6.0), product of:
0.1656677 = queryWeight, product of:
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.050763648 = queryNorm
0.37471575 = fieldWeight in 95, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.2635105 = idf(docFreq=4597, maxDocs=44218)
0.046875 = fieldNorm(doc=95)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- In this chapter, the authors describe the key indexing components of today's web search engines. As the World Wide Web has grown, the systems and methods for indexing have changed significantly. The authors present the data structures used, the features extracted, the infrastructure needed, and the options available for designing a brand new search engine. Techniques are highlighted that improve relevance of results, discuss trade-offs to best utilize machine resources, and cover distributed processing concepts in this context. In particular, the authors delve into the topics of indexing phrases instead of terms, storage in memory vs. on disk, and data partitioning. Some thoughts on information organization for the newly emerging data-forms conclude the chapter.
