Youtube Revisited: On the Importance of Correct Measurement Methodology - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2015

Youtube Revisited: On the Importance of Correct Measurement Methodology

Résumé

Measurements of large systems typically rely on sampling to keep the measurement effort practical. For example, Youtube’s video popularity has been measured by crawling either related videos or videos belonging to certain categories or by using a list of, e.g., the most recent videos as the data-source. In this paper we demonstrate that all these methods lead to a biased sample of data when compared to a random sample. We demonstrate the bias by comparing the differently sampled data sets in terms of different commonly used metrics, such as video popularity, age, length, or category. The results show that different sampling methods lead to significantly different values in the metrics, thus potentially leading to very different conclusions about the system under study. The goal of the paper is not to provide yet-another-set-of-numbers for YouTube; instead we seek to emphasize the importance of using correct measurement methodologies and understanding the inherent weaknesses of different methodologies.
Fichier principal
Vignette du fichier
336978_1_En_2_Chapter.pdf (1.26 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01411177 , version 1 (07-12-2016)

Licence

Paternité

Identifiants

Citer

Ossi Karkulahti, Jussi Kangasharju. Youtube Revisited: On the Importance of Correct Measurement Methodology. 7th Workshop on Traffic Monitoring and Analysis (TMA), Apr 2015, Barcelona, Spain. pp.17-30, ⟨10.1007/978-3-319-17172-2_2⟩. ⟨hal-01411177⟩
86 Consultations
88 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More