-
Breyer, K.: Kommerz statt Information (2002)
0.08
0.07788818 = product of:
0.15577637 = sum of:
0.15577637 = sum of:
0.06366888 = weight(_text_:k in 568) [ClassicSimilarity], result of:
0.06366888 = score(doc=568,freq=2.0), product of:
0.16142878 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.045220956 = queryNorm
0.39440846 = fieldWeight in 568, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.078125 = fieldNorm(doc=568)
0.030839335 = weight(_text_:h in 568) [ClassicSimilarity], result of:
0.030839335 = score(doc=568,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.27449545 = fieldWeight in 568, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.078125 = fieldNorm(doc=568)
0.061268155 = weight(_text_:22 in 568) [ClassicSimilarity], result of:
0.061268155 = score(doc=568,freq=2.0), product of:
0.15835609 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045220956 = queryNorm
0.38690117 = fieldWeight in 568, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=568)
0.5 = coord(1/2)
- Date
- 9. 5.2002 21:21:22
- Source
- PC professionell. 2002, H.6, S.122-129
-
Großjohann, K.: Gathering-, Harvesting-, Suchmaschinen (1996)
0.06
0.06012606 = product of:
0.12025212 = sum of:
0.12025212 = product of:
0.18037817 = sum of:
0.07640266 = weight(_text_:k in 3227) [ClassicSimilarity], result of:
0.07640266 = score(doc=3227,freq=2.0), product of:
0.16142878 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.045220956 = queryNorm
0.47329018 = fieldWeight in 3227, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.09375 = fieldNorm(doc=3227)
0.10397551 = weight(_text_:22 in 3227) [ClassicSimilarity], result of:
0.10397551 = score(doc=3227,freq=4.0), product of:
0.15835609 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045220956 = queryNorm
0.6565931 = fieldWeight in 3227, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=3227)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 7. 2.1996 22:38:41
- Pages
- 22 S
-
Höfer, W.: Detektive im Web (1999)
0.05
0.04699424 = product of:
0.09398848 = sum of:
0.09398848 = product of:
0.14098272 = sum of:
0.0370072 = weight(_text_:h in 4007) [ClassicSimilarity], result of:
0.0370072 = score(doc=4007,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.32939452 = fieldWeight in 4007, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.09375 = fieldNorm(doc=4007)
0.10397551 = weight(_text_:22 in 4007) [ClassicSimilarity], result of:
0.10397551 = score(doc=4007,freq=4.0), product of:
0.15835609 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045220956 = queryNorm
0.6565931 = fieldWeight in 4007, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=4007)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 8.1999 20:22:06
- Source
- Internet Professionell. 1999, H.9, S.28-36
-
Rensman, J.: Blick ins Getriebe (1999)
0.05
0.04699424 = product of:
0.09398848 = sum of:
0.09398848 = product of:
0.14098272 = sum of:
0.0370072 = weight(_text_:h in 4009) [ClassicSimilarity], result of:
0.0370072 = score(doc=4009,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.32939452 = fieldWeight in 4009, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.09375 = fieldNorm(doc=4009)
0.10397551 = weight(_text_:22 in 4009) [ClassicSimilarity], result of:
0.10397551 = score(doc=4009,freq=4.0), product of:
0.15835609 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045220956 = queryNorm
0.6565931 = fieldWeight in 4009, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=4009)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 8.1999 21:22:59
- Source
- Internet Professionell. 1999, H.9, S.44-47
-
Niedermair, K.: Gefährden Suchmaschinen und Discovery-Systeme die informationelle Autonomie? (2014)
0.04
0.03780329 = product of:
0.07560658 = sum of:
0.07560658 = product of:
0.11340986 = sum of:
0.07640266 = weight(_text_:k in 811) [ClassicSimilarity], result of:
0.07640266 = score(doc=811,freq=2.0), product of:
0.16142878 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.045220956 = queryNorm
0.47329018 = fieldWeight in 811, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.09375 = fieldNorm(doc=811)
0.0370072 = weight(_text_:h in 811) [ClassicSimilarity], result of:
0.0370072 = score(doc=811,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.32939452 = fieldWeight in 811, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.09375 = fieldNorm(doc=811)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Source
- Mitteilungen der Vereinigung Österreichischer Bibliothekarinnen und Bibliothekare. 67(2014) H.1, S.109-125
-
Auf der Suche nach Suchmaschinen (1996)
0.04
0.036842998 = product of:
0.073685996 = sum of:
0.073685996 = product of:
0.11052899 = sum of:
0.0370072 = weight(_text_:h in 5583) [ClassicSimilarity], result of:
0.0370072 = score(doc=5583,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.32939452 = fieldWeight in 5583, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.09375 = fieldNorm(doc=5583)
0.073521785 = weight(_text_:22 in 5583) [ClassicSimilarity], result of:
0.073521785 = score(doc=5583,freq=2.0), product of:
0.15835609 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045220956 = queryNorm
0.46428138 = fieldWeight in 5583, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=5583)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Source
- Cogito. 12(1996) H.5, S.19-22
-
Bager, J.: Weniger ist mehr : Internet-Suchmaschinen richtig einsetzen (1998)
0.04
0.036842998 = product of:
0.073685996 = sum of:
0.073685996 = product of:
0.11052899 = sum of:
0.0370072 = weight(_text_:h in 1489) [ClassicSimilarity], result of:
0.0370072 = score(doc=1489,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.32939452 = fieldWeight in 1489, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.09375 = fieldNorm(doc=1489)
0.073521785 = weight(_text_:22 in 1489) [ClassicSimilarity], result of:
0.073521785 = score(doc=1489,freq=2.0), product of:
0.15835609 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045220956 = queryNorm
0.46428138 = fieldWeight in 1489, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=1489)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 29.12.1998 11:22:00
- Source
- c't. 1998, H.15, S.110-112
-
Ganslmayer, K.: Google: Finden, was Google nicht sieht (2006)
0.03
0.03150274 = product of:
0.06300548 = sum of:
0.06300548 = product of:
0.094508216 = sum of:
0.06366888 = weight(_text_:k in 3180) [ClassicSimilarity], result of:
0.06366888 = score(doc=3180,freq=2.0), product of:
0.16142878 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.045220956 = queryNorm
0.39440846 = fieldWeight in 3180, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.078125 = fieldNorm(doc=3180)
0.030839335 = weight(_text_:h in 3180) [ClassicSimilarity], result of:
0.030839335 = score(doc=3180,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.27449545 = fieldWeight in 3180, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.078125 = fieldNorm(doc=3180)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Source
- Chip. 2006, H.7, S.202-206
-
Lemm, K.: Find' ich gut (1999)
0.03
0.03150274 = product of:
0.06300548 = sum of:
0.06300548 = product of:
0.094508216 = sum of:
0.06366888 = weight(_text_:k in 3077) [ClassicSimilarity], result of:
0.06366888 = score(doc=3077,freq=2.0), product of:
0.16142878 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.045220956 = queryNorm
0.39440846 = fieldWeight in 3077, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.078125 = fieldNorm(doc=3077)
0.030839335 = weight(_text_:h in 3077) [ClassicSimilarity], result of:
0.030839335 = score(doc=3077,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.27449545 = fieldWeight in 3077, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.078125 = fieldNorm(doc=3077)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Source
- Konr@d. 1999, H.1, S.106-109
-
Boldi, P.; Santini, M.; Vigna, S.: PageRank as a function of the damping factor (2005)
0.03
0.03143432 = product of:
0.06286864 = sum of:
0.06286864 = product of:
0.09430295 = sum of:
0.06366888 = weight(_text_:k in 2564) [ClassicSimilarity], result of:
0.06366888 = score(doc=2564,freq=8.0), product of:
0.16142878 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.045220956 = queryNorm
0.39440846 = fieldWeight in 2564, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.0390625 = fieldNorm(doc=2564)
0.030634077 = weight(_text_:22 in 2564) [ClassicSimilarity], result of:
0.030634077 = score(doc=2564,freq=2.0), product of:
0.15835609 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045220956 = 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)
0.5 = coord(1/2)
- 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
-
Wätjen, H.-J.: Mensch oder Maschine? : Auswahl und Erschließung vonm Informationsressourcen im Internet (1996)
0.03
0.030702498 = product of:
0.061404996 = sum of:
0.061404996 = product of:
0.09210749 = sum of:
0.030839335 = weight(_text_:h in 3161) [ClassicSimilarity], result of:
0.030839335 = score(doc=3161,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.27449545 = fieldWeight in 3161, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.078125 = fieldNorm(doc=3161)
0.061268155 = weight(_text_:22 in 3161) [ClassicSimilarity], result of:
0.061268155 = score(doc=3161,freq=2.0), product of:
0.15835609 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045220956 = queryNorm
0.38690117 = fieldWeight in 3161, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=3161)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 2. 2.1996 15:40:22
-
Loeper, D. von: Sherlock Holmes im Netz (1997)
0.03
0.030702498 = product of:
0.061404996 = sum of:
0.061404996 = product of:
0.09210749 = sum of:
0.030839335 = weight(_text_:h in 6566) [ClassicSimilarity], result of:
0.030839335 = score(doc=6566,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.27449545 = fieldWeight in 6566, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.078125 = fieldNorm(doc=6566)
0.061268155 = weight(_text_:22 in 6566) [ClassicSimilarity], result of:
0.061268155 = score(doc=6566,freq=2.0), product of:
0.15835609 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045220956 = queryNorm
0.38690117 = fieldWeight in 6566, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=6566)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 2.1997 19:50:29
- Source
- Cogito. 1997, H.1, S.8-11
-
Hüskes, R.; Kleber, D.: ¬Den Server im Griff (1999)
0.03
0.030702498 = product of:
0.061404996 = sum of:
0.061404996 = product of:
0.09210749 = sum of:
0.030839335 = weight(_text_:h in 4008) [ClassicSimilarity], result of:
0.030839335 = score(doc=4008,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.27449545 = fieldWeight in 4008, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.078125 = fieldNorm(doc=4008)
0.061268155 = weight(_text_:22 in 4008) [ClassicSimilarity], result of:
0.061268155 = score(doc=4008,freq=2.0), product of:
0.15835609 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045220956 = queryNorm
0.38690117 = fieldWeight in 4008, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=4008)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 8.1999 21:21:10
- Source
- Internet Professionell. 1999, H.9, S.38-43
-
Eggeling, T.; Kroschel, A.: Alles finden im Web (2000)
0.03
0.030702498 = product of:
0.061404996 = sum of:
0.061404996 = product of:
0.09210749 = sum of:
0.030839335 = weight(_text_:h in 4884) [ClassicSimilarity], result of:
0.030839335 = score(doc=4884,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.27449545 = fieldWeight in 4884, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.078125 = fieldNorm(doc=4884)
0.061268155 = weight(_text_:22 in 4884) [ClassicSimilarity], result of:
0.061268155 = score(doc=4884,freq=2.0), product of:
0.15835609 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045220956 = queryNorm
0.38690117 = fieldWeight in 4884, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=4884)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 9. 7.2000 14:06:22
- Source
- PC-Welt. 2000, H.8, S.104-122
-
Sauer, D.: Alles schneller finden (2001)
0.03
0.030702498 = product of:
0.061404996 = sum of:
0.061404996 = product of:
0.09210749 = sum of:
0.030839335 = weight(_text_:h in 6835) [ClassicSimilarity], result of:
0.030839335 = score(doc=6835,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.27449545 = fieldWeight in 6835, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.078125 = fieldNorm(doc=6835)
0.061268155 = weight(_text_:22 in 6835) [ClassicSimilarity], result of:
0.061268155 = score(doc=6835,freq=2.0), product of:
0.15835609 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045220956 = queryNorm
0.38690117 = fieldWeight in 6835, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=6835)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 11.11.2001 17:25:22
- Source
- Com!online. 2001, H.12, S.24-29
-
Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001)
0.03
0.030582255 = product of:
0.06116451 = sum of:
0.06116451 = product of:
0.09174676 = sum of:
0.042732235 = weight(_text_:h in 261) [ClassicSimilarity], result of:
0.042732235 = score(doc=261,freq=6.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.38035205 = fieldWeight in 261, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0625 = fieldNorm(doc=261)
0.049014524 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
0.049014524 = score(doc=261,freq=2.0), product of:
0.15835609 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045220956 = queryNorm
0.30952093 = fieldWeight in 261, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=261)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Abstract
- Die deutschen Suchmaschinen, Abacho, Acoon, Fireball und Lycos sowie die Web-Kataloge Web.de und Yahoo! werden einem Qualitätstest nach relativem Recall, Precision und Availability unterzogen. Die Methoden der Retrievaltests werden vorgestellt. Im Durchschnitt werden bei einem Cut-Off-Wert von 25 ein Recall von rund 22%, eine Precision von knapp 19% und eine Verfügbarkeit von 24% erreicht
- Footnote
- Vgl. auch den Bericht in: nfd 53(2002) H.2, S.71
- Source
- nfd Information - Wissenschaft und Praxis. 52(2001) H.7, S.381-392
-
Williamson, N.J.: Knowledge structures and the Internet : progress and prospects (2006)
0.03
0.029151976 = product of:
0.058303952 = sum of:
0.058303952 = product of:
0.08745593 = sum of:
0.04456822 = weight(_text_:k in 238) [ClassicSimilarity], result of:
0.04456822 = score(doc=238,freq=2.0), product of:
0.16142878 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.045220956 = queryNorm
0.27608594 = fieldWeight in 238, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.0546875 = fieldNorm(doc=238)
0.042887706 = weight(_text_:22 in 238) [ClassicSimilarity], result of:
0.042887706 = score(doc=238,freq=2.0), product of:
0.15835609 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045220956 = queryNorm
0.2708308 = fieldWeight in 238, 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=238)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 27.12.2008 15:56:22
- Source
- Knowledge organization for a global learning society: Proceedings of the 9th International ISKO Conference, 4-7 July 2006, Vienna, Austria. Hrsg.: G. Budin, C. Swertz u. K. Mitgutsch
-
Li, L.; Shang, Y.; Zhang, W.: Improvement of HITS-based algorithms on Web documents
0.03
0.026933575 = product of:
0.05386715 = sum of:
0.05386715 = product of:
0.2154686 = sum of:
0.2154686 = weight(_text_:3a in 2514) [ClassicSimilarity], result of:
0.2154686 = score(doc=2514,freq=2.0), product of:
0.38338378 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.045220956 = queryNorm
0.56201804 = fieldWeight in 2514, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.046875 = fieldNorm(doc=2514)
0.25 = coord(1/4)
0.5 = coord(1/2)
- Content
- Vgl.: http%3A%2F%2Fdelab.csd.auth.gr%2F~dimitris%2Fcourses%2Fir_spring06%2Fpage_rank_computing%2Fp527-li.pdf. Vgl. auch: http://www2002.org/CDROM/refereed/643/.
-
Kranz, K.: Suchmaschinen-Macht (2004)
0.03
0.02520219 = product of:
0.05040438 = sum of:
0.05040438 = product of:
0.07560657 = sum of:
0.050935104 = weight(_text_:k in 1988) [ClassicSimilarity], result of:
0.050935104 = score(doc=1988,freq=2.0), product of:
0.16142878 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.045220956 = queryNorm
0.31552678 = fieldWeight in 1988, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.0625 = fieldNorm(doc=1988)
0.024671467 = weight(_text_:h in 1988) [ClassicSimilarity], result of:
0.024671467 = score(doc=1988,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.21959636 = fieldWeight in 1988, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0625 = fieldNorm(doc=1988)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Source
- Chip. 2004, H.1, S.34-35
-
Werner, K.: das Confirmation/Disconfirmation-Paradigma der Kundenzufriedenheit im Kontext des Information Retrieval : Größere Zufriedenheit durch bessere Suchmaschinen? (2010)
0.03
0.02520219 = product of:
0.05040438 = sum of:
0.05040438 = product of:
0.07560657 = sum of:
0.050935104 = weight(_text_:k in 4016) [ClassicSimilarity], result of:
0.050935104 = score(doc=4016,freq=2.0), product of:
0.16142878 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.045220956 = queryNorm
0.31552678 = fieldWeight in 4016, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.0625 = fieldNorm(doc=4016)
0.024671467 = weight(_text_:h in 4016) [ClassicSimilarity], result of:
0.024671467 = score(doc=4016,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.21959636 = fieldWeight in 4016, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0625 = fieldNorm(doc=4016)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Source
- Information - Wissenschaft und Praxis. 61(2010) H.6/7, S.385-396
