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Egghe, L.; Guns, R.; Rousseau, R.; Leuven, K.U.: Erratum (2012) 0.08

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Date: 14. 2.2012 12:53:22

Egghe, L.; Rousseau, R.: Averaging and globalising quotients of informetric and scientometric data (1996) 0.05

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Source: Journal of information science. 22(1996) no.3, S.165-170

Egghe, L.: ¬A universal method of information retrieval evaluation : the "missing" link M and the universal IR surface (2004) 0.05

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Date: 14. 8.2004 19:17:22

Egghe, L.: Little science, big science and beyond (1994) 0.03

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Egghe, L.: Expansion of the field of informetrics : the second special issue (2006) 0.03

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Egghe, L.: Expansion of the field of informetrics : origins and consequences (2005) 0.03

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Egghe, L.: Special features of the author - publication relationship and a new explanation of Lotka's law based on convolution theory (1994) 0.03

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Egghe, L.: Note on a possible decomposition of the h-Index (2013) 0.03

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Egghe, L.: ¬The Hirsch index and related impact measures (2010) 0.03

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Egghe, L.; Liang, L.; Rousseau, R.: ¬A relation between h-index and impact factor in the power-law model (2009) 0.02

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Egghe, L.: ¬A good normalized impact and concentration measure (2014) 0.02

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Egghe, L.; Liang, L.; Rousseau, R.: Fundamental properties of rhythm sequences (2008) 0.02

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Egghe, L.; Bornmann, L.: Fallout and miss in journal peer review (2013) 0.02

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Egghe, L.: Existence theorem of the quadruple (P, R, F, M) : precision, recall, fallout and miss (2007) 0.02
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Abstract

In an earlier paper [Egghe, L. (2004). A universal method of information retrieval evaluation: the "missing" link M and the universal IR surface. Information Processing and Management, 40, 21-30] we showed that, given an IR system, and if P denotes precision, R recall, F fallout and M miss (re-introduced in the paper mentioned above), we have the following relationship between P, R, F and M: P/(1-P)*(1-R)/R*F/(1-F)*(1-M)/M = 1. In this paper we prove the (more difficult) converse: given any four rational numbers in the interval ]0, 1[ satisfying the above equation, then there exists an IR system such that these four numbers (in any order) are the precision, recall, fallout and miss of this IR system. As a consequence we show that any three rational numbers in ]0, 1[ represent any three measures taken from precision, recall, fallout and miss of a certain IR system. We also show that this result is also true for two numbers instead of three.

Egghe, L.; Leydesdorff, L.: ¬The relation between Pearson's correlation coefficient r and Salton's cosine measure (2009) 0.02

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Egghe, L.: ¬The amount of actions needed for shelving and reshelving (1996) 0.02

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Egghe, L.; Rousseau, R.: Duality in information retrieval and the hypegeometric distribution (1997) 0.02

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Egghe, L.: On the law of Zipf-Mandelbrot for multi-word phrases (1999) 0.02

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Egghe, L.; Rousseau, R.: ¬A theoretical study of recall and precision using a topological approach to information retrieval (1998) 0.02

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Egghe, L.; Rousseau, R.: ¬The influence of publication delays on the observed aging distribution of scientific literature (2000) 0.02

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