-
Egghe, L.; Liang, L.; Rousseau, R.: Fundamental properties of rhythm sequences (2008)
0.02
0.015869606 = product of:
0.031739213 = sum of:
0.031739213 = product of:
0.063478425 = sum of:
0.063478425 = weight(_text_:r in 1965) [ClassicSimilarity], result of:
0.063478425 = score(doc=1965,freq=8.0), product of:
0.12397416 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.037451506 = queryNorm
0.51202947 = fieldWeight in 1965, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.0546875 = fieldNorm(doc=1965)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Fundamental mathematical properties of rhythm sequences are studied. In particular, a set of three axioms for valid rhythm indicators is proposed, and it is shown that the R-indicator satisfies only two out of three but that the R-indicator satisfies all three. This fills a critical, logical gap in the study of these indicator sequences. Matrices leading to a constant R-sequence are called baseline matrices. They are characterized as matrices with constant w-year diachronous impact factors. The relation with classical impact factors is clarified. Using regression analysis matrices with a rhythm sequence that is on average equal to 1 (smaller than 1, larger than 1) are characterized.
-
Egghe, L.; Liang, L.; Rousseau, R.: ¬A relation between h-index and impact factor in the power-law model (2009)
0.01
0.009068346 = product of:
0.018136691 = sum of:
0.018136691 = product of:
0.036273383 = sum of:
0.036273383 = weight(_text_:r in 6759) [ClassicSimilarity], result of:
0.036273383 = score(doc=6759,freq=2.0), product of:
0.12397416 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.037451506 = queryNorm
0.29258826 = fieldWeight in 6759, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.0625 = fieldNorm(doc=6759)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Liang, L.; Rousseau, R.: Yield sequences as journal attractivity indicators : "payback times" for Science and Nature (2008)
0.01
0.0068012597 = product of:
0.013602519 = sum of:
0.013602519 = product of:
0.027205039 = sum of:
0.027205039 = weight(_text_:r in 1737) [ClassicSimilarity], result of:
0.027205039 = score(doc=1737,freq=2.0), product of:
0.12397416 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.037451506 = queryNorm
0.2194412 = fieldWeight in 1737, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.046875 = fieldNorm(doc=1737)
0.5 = coord(1/2)
0.5 = coord(1/2)