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001-es BibID:	BIBFORM077945
035-os BibID:	(cikkazonosító)e3011
Első szerző:	Sipos László (agrár)
Cím:	A novel ranking distance measure combining Cayley and Spearman footrule metrics / László Sipos, Attila Gere, József Popp, Sándor Kovács
Dátum:	2018
ISSN:	0886-9383
Megjegyzések:	Defining the appropriate ranking distance measures among rankings is a classicarea of study. The goal of our work is to identify a combination of methodologies, which is proven to be capable for the determination of a proper rankingsystem. In our study, we used 3 well-established metrics: Kendall tau,Spearman footrule, and Cayley distance and a novel metric created by thecombination of Cayley and Spearman footrule metrics. The results of the newlyintroduced metric depend on how fast we can trade a permutation of items tothe reference permutation according to the Spearman footrule. On the otherhand, the distance also depends on the number of cycles and the inversionsin the cycle. Two case studies - chemometric data of phytonutrients of tomatovarieties and sensometric data of orange juices - were used to test theperformance of the studied ranking distance metrics. The properties ofthe new metric were compared to the traditional metrics regarding the normality of their distributions, significant number of differences between the ratingobjects, and the quality of the rankings. Results were validated by leave-one-out cross-validation and significant differences by Wilcoxon matched pairs test.
Tárgyszavak:	Természettudományok Matematika- és számítástudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Journal of Chemometrics. - 32 : 4 (2018), p. 1-12. -
További szerzők:	Gere Attila Popp József (1955-) (közgazdász) Kovács Sándor (1978-) (matematika tanár)
Pályázati támogatás:	ÚNKP?17?4 egyéb OTKA K119269 OTKA VEKOP 2.3.3?15?2017?00022 VEKOP
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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