-
Bar-Ilan, J.: On the overlap, the precision and estimated recall of search engines : a case study of the query 'Erdös' (1998)
0.01
0.014277913 = product of:
0.028555825 = sum of:
0.028555825 = product of:
0.042833738 = sum of:
0.0072761164 = weight(_text_:e in 3753) [ClassicSimilarity], result of:
0.0072761164 = score(doc=3753,freq=2.0), product of:
0.06545277 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.04553648 = queryNorm
0.1111659 = fieldWeight in 3753, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.0546875 = fieldNorm(doc=3753)
0.03555762 = weight(_text_:j in 3753) [ClassicSimilarity], result of:
0.03555762 = score(doc=3753,freq=2.0), product of:
0.144692 = queryWeight, product of:
3.1774964 = idf(docFreq=5010, maxDocs=44218)
0.04553648 = queryNorm
0.24574696 = fieldWeight in 3753, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1774964 = idf(docFreq=5010, maxDocs=44218)
0.0546875 = fieldNorm(doc=3753)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Language
- e
-
Cheng, S.; YunTao, P.; JunPeng, Y.; Hong, G.; ZhengLu, Y.; ZhiYu, H.: PageRank, HITS and impact factor for journal ranking (2009)
0.01
0.0137052825 = product of:
0.027410565 = sum of:
0.027410565 = product of:
0.041115846 = sum of:
0.005197226 = weight(_text_:e in 2513) [ClassicSimilarity], result of:
0.005197226 = score(doc=2513,freq=2.0), product of:
0.06545277 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.04553648 = queryNorm
0.07940422 = fieldWeight in 2513, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.0390625 = fieldNorm(doc=2513)
0.03591862 = weight(_text_:j in 2513) [ClassicSimilarity], result of:
0.03591862 = score(doc=2513,freq=4.0), product of:
0.144692 = queryWeight, product of:
3.1774964 = idf(docFreq=5010, maxDocs=44218)
0.04553648 = queryNorm
0.2482419 = fieldWeight in 2513, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.1774964 = idf(docFreq=5010, maxDocs=44218)
0.0390625 = fieldNorm(doc=2513)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Abstract
- Journal citation measures are one of the most widely used bibliometric tools. The most well-known measure is the ISI Impact Factor, under the standard definition, the impact factor of journal j in a given year is the average number of citations received by papers published in the previous two years of journal j. However, the impact factor has its "intrinsic" limitations, it is a ranking measure based fundamentally on a pure counting of the in-degrees of nodes in the network, and its calculation does not take into account the "impact" or "prestige" of the journals in which the citations appear. Google's PageRank algorithm and Kleinberg's HITS method are webpage ranking algorithm, they compute the scores of webpages based on a combination of the number of hyperlinks that point to the page and the status of pages that the hyperlinks originate from, a page is important if it is pointed to by other important pages. We demonstrate how popular webpage algorithm PageRank and HITS can be used ranking journal, and we compared ISI impact factor, PageRank and HITS for journal ranking, and with PageRank and HITS compute respectively including self-citation and non self-citation, and discussed the merit and shortcomings and the scope of application that the various algorithms are used to rank journal.
- Language
- e
-
Ding, Y.; Yan, E.; Frazho, A.; Caverlee, J.: PageRank for ranking authors in co-citation networks (2009)
0.01
0.013099316 = product of:
0.026198631 = sum of:
0.026198631 = product of:
0.039297946 = sum of:
0.008819985 = weight(_text_:e in 3161) [ClassicSimilarity], result of:
0.008819985 = score(doc=3161,freq=4.0), product of:
0.06545277 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.04553648 = queryNorm
0.13475344 = fieldWeight in 3161, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.046875 = fieldNorm(doc=3161)
0.03047796 = weight(_text_:j in 3161) [ClassicSimilarity], result of:
0.03047796 = score(doc=3161,freq=2.0), product of:
0.144692 = queryWeight, product of:
3.1774964 = idf(docFreq=5010, maxDocs=44218)
0.04553648 = queryNorm
0.21064025 = fieldWeight in 3161, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1774964 = idf(docFreq=5010, maxDocs=44218)
0.046875 = fieldNorm(doc=3161)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Language
- e
-
Thelwall, M.: Web impact factors and search engine coverage (2000)
0.00
0.001385927 = product of:
0.002771854 = sum of:
0.002771854 = product of:
0.008315561 = sum of:
0.008315561 = weight(_text_:e in 4539) [ClassicSimilarity], result of:
0.008315561 = score(doc=4539,freq=2.0), product of:
0.06545277 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.04553648 = queryNorm
0.12704675 = fieldWeight in 4539, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.0625 = fieldNorm(doc=4539)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Language
- e
-
Ortega, J.L.; Aguillo, I.F.: Microsoft academic search and Google scholar citations : comparative analysis of author profiles (2014)
0.00
0.0010394452 = product of:
0.0020788903 = sum of:
0.0020788903 = product of:
0.006236671 = sum of:
0.006236671 = weight(_text_:e in 1284) [ClassicSimilarity], result of:
0.006236671 = score(doc=1284,freq=2.0), product of:
0.06545277 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.04553648 = queryNorm
0.09528506 = fieldWeight in 1284, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.046875 = fieldNorm(doc=1284)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Language
- e
-
Herring, S.D.: ¬The value of interdisciplinarity : a study based on the design of Internet search engines (1999)
0.00
8.662044E-4 = product of:
0.0017324088 = sum of:
0.0017324088 = product of:
0.005197226 = sum of:
0.005197226 = weight(_text_:e in 3458) [ClassicSimilarity], result of:
0.005197226 = score(doc=3458,freq=2.0), product of:
0.06545277 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.04553648 = queryNorm
0.07940422 = fieldWeight in 3458, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.0390625 = fieldNorm(doc=3458)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Language
- e
-
Jepsen, E.T.; Seiden, P.; Ingwersen, P.; Björneborn, L.; Borlund, P.: Characteristics of scientific Web publications : preliminary data gathering and analysis (2004)
0.00
8.662044E-4 = product of:
0.0017324088 = sum of:
0.0017324088 = product of:
0.005197226 = sum of:
0.005197226 = weight(_text_:e in 3091) [ClassicSimilarity], result of:
0.005197226 = score(doc=3091,freq=2.0), product of:
0.06545277 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.04553648 = queryNorm
0.07940422 = fieldWeight in 3091, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.0390625 = fieldNorm(doc=3091)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Language
- e
-
Thelwall, M.: Quantitative comparisons of search engine results (2008)
0.00
8.662044E-4 = product of:
0.0017324088 = sum of:
0.0017324088 = product of:
0.005197226 = sum of:
0.005197226 = weight(_text_:e in 2350) [ClassicSimilarity], result of:
0.005197226 = score(doc=2350,freq=2.0), product of:
0.06545277 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.04553648 = queryNorm
0.07940422 = fieldWeight in 2350, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.0390625 = fieldNorm(doc=2350)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Language
- e
